finance-dates 0.1.0

//! Per-exchange / per-region calendars.
//!
//! Distinguishes equity, options, futures, FX, bond, and crypto markets, each
//! of which can have very different holiday calendars and trading hours. The
//! `calendar_for_exchange` lookup covers every MIC currently exposed by
//! finance-enums plus a few common futures venues.

use chrono::{DateTime, Datelike, Duration, NaiveDate, NaiveTime, Utc};
use std::collections::BTreeSet;
use std::sync::Arc;

use crate::holiday::{HolidayRule, Weekday, WeekendRoll};
use crate::range::{
    business_day_range, business_days_between, next_business_day, previous_business_day,
    STANDARD_WEEKMASK,
};
use crate::trading_hours::{Session, TradingHours};

pub use finance_enums::data::ExchangeCode_VARIANTS as EXCHANGE_CODES;

/// The class of instrument a calendar represents.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum MarketType {
    /// Cash equities and ETFs.
    Equity,
    /// Listed options.
    Options,
    /// Listed futures and futures options.
    Futures,
    /// Spot / margin FX.
    Fx,
    /// Fixed-income (SIFMA-style).
    Bond,
    /// 24x7 crypto.
    Crypto,
    /// Other / unknown.
    Other,
}

impl MarketType {
    pub fn as_str(self) -> &'static str {
        match self {
            MarketType::Equity => "equity",
            MarketType::Options => "options",
            MarketType::Futures => "futures",
            MarketType::Fx => "fx",
            MarketType::Bond => "bond",
            MarketType::Crypto => "crypto",
            MarketType::Other => "other",
        }
    }
}

/// Mon-Sun all-true weekmask (used by 24x7 crypto venues).
pub const CRYPTO_WEEKMASK: [bool; 7] = [true, true, true, true, true, true, true];

/// Sun-Fri weekmask used by 24x5 FX. Monday=index 0; Sunday=index 6.
pub const FX_WEEKMASK: [bool; 7] = [true, true, true, true, true, false, true];

/// ISO region codes recognised by `calendar_for_region`.
pub const REGION_CODES: &[&str] = &[
    "US", "UK", "GB", "EU", "JP", "HK", "CN", "CA", "AU", "IN", "DE", "FR", "NL", "BE", "PT", "IT",
    "ES", "CH", "NO", "SE", "FI", "DK", "IS", "PL", "CZ", "HU", "AT", "IE", "KR", "SG", "TW", "TH",
    "MY", "ID", "PH", "NZ", "ZA", "SA", "TR", "IL", "AE", "BR", "MX", "AR", "CL", "PE", "CO",
];

/// A holiday calendar with optional trading hours and a market classification.
pub struct Calendar {
    pub name: String,
    pub market_type: MarketType,
    pub weekmask: [bool; 7],
    pub rules: Vec<HolidayRule>,
    pub trading_hours: Option<TradingHours>,
    /// Days when the venue closes earlier than usual. Each rule resolves to
    /// at most one date per year, paired with a local close time that
    /// replaces the normal session close on that date.
    pub early_closes: Vec<EarlyCloseRule>,
    cache: HolidayCache,
    early_cache: EarlyCloseCache,
}

/// An early-close rule. `rule` resolves to a date (using the same machinery
/// as holiday rules); `close_time` is the local time at which the venue
/// closes on that date instead of its regular session close.
#[derive(Clone, Debug)]
pub struct EarlyCloseRule {
    pub rule: HolidayRule,
    pub close_time: NaiveTime,
}

#[derive(Default)]
struct EarlyCloseCache {
    inner: parking_lot_dummy::RwLock<
        std::collections::HashMap<i32, Arc<std::collections::HashMap<NaiveDate, NaiveTime>>>,
    >,
}

#[derive(Default)]
struct HolidayCache {
    inner: parking_lot_dummy::RwLock<std::collections::HashMap<i32, Arc<BTreeSet<NaiveDate>>>>,
}

mod parking_lot_dummy {
    use std::sync::RwLock as StdRwLock;
    pub struct RwLock<T>(pub StdRwLock<T>);
    impl<T: Default> Default for RwLock<T> {
        fn default() -> Self {
            Self(StdRwLock::new(T::default()))
        }
    }
    impl<T> RwLock<T> {
        pub fn read(&self) -> std::sync::RwLockReadGuard<'_, T> {
            self.0.read().unwrap()
        }
        pub fn write(&self) -> std::sync::RwLockWriteGuard<'_, T> {
            self.0.write().unwrap()
        }
    }
}

impl Calendar {
    pub fn new(
        name: impl Into<String>,
        weekmask: [bool; 7],
        rules: Vec<HolidayRule>,
        trading_hours: Option<TradingHours>,
    ) -> Self {
        Self::with_type(name, MarketType::Equity, weekmask, rules, trading_hours)
    }

    pub fn with_type(
        name: impl Into<String>,
        market_type: MarketType,
        weekmask: [bool; 7],
        rules: Vec<HolidayRule>,
        trading_hours: Option<TradingHours>,
    ) -> Self {
        Self {
            name: name.into(),
            market_type,
            weekmask,
            rules,
            trading_hours,
            early_closes: Vec::new(),
            cache: HolidayCache::default(),
            early_cache: EarlyCloseCache::default(),
        }
    }

    /// Builder: attach early-close rules.
    pub fn with_early_closes(mut self, ec: Vec<EarlyCloseRule>) -> Self {
        self.early_closes = ec;
        self
    }

    /// Cached map of `date -> local early-close time` for the given year.
    fn early_close_map(&self, year: i32) -> Arc<std::collections::HashMap<NaiveDate, NaiveTime>> {
        if let Some(m) = self.early_cache.inner.read().get(&year).cloned() {
            return m;
        }
        let mut m = std::collections::HashMap::new();
        for ec in &self.early_closes {
            if let Some(d) = ec.rule.observed_in(year) {
                // Only register if the resulting date is itself a business
                // day (skip rolled-into-weekend cases).
                let i = d.weekday().num_days_from_monday() as usize;
                if !self.weekmask[i] {
                    continue;
                }
                if self.holidays(year).contains(&d) {
                    continue;
                }
                m.insert(d, ec.close_time);
            }
        }
        let arc = Arc::new(m);
        self.early_cache.inner.write().insert(year, arc.clone());
        arc
    }

    /// Local early-close time for `date`, if any.
    pub fn early_close_for(&self, date: NaiveDate) -> Option<NaiveTime> {
        self.early_close_map(date.year()).get(&date).copied()
    }

    pub fn holidays(&self, year: i32) -> Arc<BTreeSet<NaiveDate>> {
        if let Some(h) = self.cache.inner.read().get(&year).cloned() {
            return h;
        }
        let mut set = BTreeSet::new();
        for r in &self.rules {
            for d in r.dates_in(year) {
                set.insert(d);
            }
        }
        let arc = Arc::new(set);
        self.cache.inner.write().insert(year, arc.clone());
        arc
    }

    pub fn holidays_between(&self, start: NaiveDate, end: NaiveDate) -> BTreeSet<NaiveDate> {
        let mut out = BTreeSet::new();
        for y in start.year()..=end.year() {
            for d in self.holidays(y).iter() {
                if *d >= start && *d <= end {
                    out.insert(*d);
                }
            }
        }
        out
    }

    pub fn is_holiday(&self, d: NaiveDate) -> bool {
        self.holidays(d.year()).contains(&d)
    }

    pub fn is_business_day(&self, d: NaiveDate) -> bool {
        let i = d.weekday().num_days_from_monday() as usize;
        self.weekmask[i] && !self.is_holiday(d)
    }

    pub fn next_business_day(&self, d: NaiveDate) -> NaiveDate {
        let years = [d.year(), d.year() + 1];
        let mut h = BTreeSet::new();
        for y in years {
            for x in self.holidays(y).iter() {
                h.insert(*x);
            }
        }
        next_business_day(d, &self.weekmask, &h)
    }

    pub fn previous_business_day(&self, d: NaiveDate) -> NaiveDate {
        let years = [d.year() - 1, d.year()];
        let mut h = BTreeSet::new();
        for y in years {
            for x in self.holidays(y).iter() {
                h.insert(*x);
            }
        }
        previous_business_day(d, &self.weekmask, &h)
    }

    pub fn business_days_between(&self, start: NaiveDate, end: NaiveDate) -> i64 {
        let h = self.holidays_between(start, end);
        business_days_between(start, end, &self.weekmask, &h)
    }

    pub fn business_day_range(&self, start: NaiveDate, end: NaiveDate) -> Vec<NaiveDate> {
        let h = self.holidays_between(start, end);
        business_day_range(start, end, &self.weekmask, &h)
    }

    /// True iff the venue is currently in any trading session.
    ///
    /// For sessions that span midnight, the trading-day check considers both
    /// the local calendar day of `when` and the next local calendar day, so a
    /// Sun-evening CME open correctly maps to Mon's trading day. If an
    /// early-close is in effect for that trading day, the last session's
    /// close is shortened.
    pub fn is_open(&self, when: DateTime<Utc>) -> bool {
        let Some(th) = &self.trading_hours else {
            return false;
        };
        let local_today = when.with_timezone(&th.timezone).date_naive();
        for delta in [0i64, 1] {
            let trading_day = local_today + Duration::days(delta);
            if !self.is_business_day(trading_day) {
                continue;
            }
            let early = self.early_close_for(trading_day);
            let last_idx = th.sessions.len().saturating_sub(1);
            for (i, s) in th.sessions.iter().enumerate() {
                let Some((o, mut c)) = s.instants(th.timezone, trading_day) else {
                    continue;
                };
                if i == last_idx {
                    if let Some(t) = early {
                        if let Some(early_c) = adjust_close(th.timezone, trading_day, s, t) {
                            c = early_c;
                        }
                    }
                }
                if when >= o && when < c {
                    return true;
                }
            }
        }
        false
    }

    pub fn next_open(&self, when: DateTime<Utc>) -> Option<DateTime<Utc>> {
        let th = self.trading_hours.as_ref()?;
        let local_today = when.with_timezone(&th.timezone).date_naive();
        for delta in 0..400i64 {
            let trading_day = local_today + Duration::days(delta);
            if !self.is_business_day(trading_day) {
                continue;
            }
            for s in &th.sessions {
                if let Some((o, _)) = s.instants(th.timezone, trading_day) {
                    if o >= when {
                        return Some(o);
                    }
                }
            }
        }
        None
    }

    pub fn next_close(&self, when: DateTime<Utc>) -> Option<DateTime<Utc>> {
        let th = self.trading_hours.as_ref()?;
        let local_today = when.with_timezone(&th.timezone).date_naive();
        for delta in 0..400i64 {
            let trading_day = local_today + Duration::days(delta);
            if !self.is_business_day(trading_day) {
                continue;
            }
            let early = self.early_close_for(trading_day);
            let last_idx = th.sessions.len().saturating_sub(1);
            for (i, s) in th.sessions.iter().enumerate() {
                let Some((_, mut c)) = s.instants(th.timezone, trading_day) else {
                    continue;
                };
                if i == last_idx {
                    if let Some(t) = early {
                        if let Some(early_c) = adjust_close(th.timezone, trading_day, s, t) {
                            c = early_c;
                        }
                    }
                }
                if c >= when {
                    return Some(c);
                }
            }
        }
        None
    }

    /// All `(open, close)` UTC instants for every business day in
    /// `[start, end]` (inclusive). Each business day contributes one entry
    /// per trading session, with the last session's close adjusted for any
    /// early-close rule. Returns an empty vector when no trading hours are
    /// configured.
    pub fn sessions_between(
        &self,
        start: NaiveDate,
        end: NaiveDate,
    ) -> Vec<(DateTime<Utc>, DateTime<Utc>)> {
        let Some(th) = &self.trading_hours else {
            return Vec::new();
        };
        let mut out = Vec::new();
        let last_idx = th.sessions.len().saturating_sub(1);
        let mut d = start;
        while d <= end {
            if self.is_business_day(d) {
                let early = self.early_close_for(d);
                for (i, s) in th.sessions.iter().enumerate() {
                    let Some((o, mut c)) = s.instants(th.timezone, d) else {
                        continue;
                    };
                    if i == last_idx {
                        if let Some(t) = early {
                            if let Some(early_c) = adjust_close(th.timezone, d, s, t) {
                                c = early_c;
                            }
                        }
                    }
                    out.push((o, c));
                }
            }
            d += Duration::days(1);
        }
        out
    }
}

/// Recompute the close instant of `session` on `trading_day` using the
/// override `local_close_time`. The day-offset of the original close is
/// preserved so cross-midnight sessions still resolve correctly.
fn adjust_close(
    tz: chrono_tz::Tz,
    trading_day: NaiveDate,
    session: &Session,
    local_close_time: NaiveTime,
) -> Option<DateTime<Utc>> {
    use chrono::TimeZone;
    let close_local_day = trading_day + Duration::days(session.close_day_offset as i64);
    let close = tz
        .from_local_datetime(&close_local_day.and_time(local_close_time))
        .single()?;
    Some(close.with_timezone(&Utc))
}

// ---------- Holiday rule constructors ----------

fn fixed(month: u32, day: u32, since_year: Option<i32>) -> HolidayRule {
    HolidayRule::Fixed {
        month,
        day,
        roll: WeekendRoll::NearestWeekday,
        since_year,
    }
}

fn fixed_no_roll(month: u32, day: u32, since_year: Option<i32>) -> HolidayRule {
    HolidayRule::Fixed {
        month,
        day,
        roll: WeekendRoll::None,
        since_year,
    }
}

fn nth(month: u32, weekday: Weekday, n: i32) -> HolidayRule {
    HolidayRule::NthWeekday {
        month,
        weekday,
        n,
        since_year: None,
    }
}

fn easter(offset_days: i32) -> HolidayRule {
    HolidayRule::EasterOffset {
        offset_days,
        since_year: None,
    }
}

// ---------- Built-in calendars ----------

fn nyse_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        nth(1, Weekday::Mon, 3),
        nth(2, Weekday::Mon, 3),
        easter(-2),
        nth(5, Weekday::Mon, -1),
        fixed(6, 19, Some(2021)),
        fixed(7, 4, None),
        nth(9, Weekday::Mon, 1),
        nth(11, Weekday::Thu, 4),
        fixed(12, 25, None),
    ]
}

fn nyse_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::America::New_York,
    )
}

/// Listed options use the same holidays as NYSE; market hours run from 09:30
/// to 16:15 ET (index options often 16:15, single-name 16:00). We pick 16:15
/// as the default close to maximize coverage.
fn options_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 15, 0).unwrap(),
        chrono_tz::America::New_York,
    )
}

/// CME Globex baseline holidays — only days when *all* products close:
/// New Year's Day, Good Friday, Christmas. Product-specific closures
/// (Memorial Day, Independence Day, Thanksgiving, …) are typically partial
/// closes / early closes which this layer does not yet model.
fn cme_globex_rules() -> Vec<HolidayRule> {
    vec![fixed(1, 1, None), easter(-2), fixed(12, 25, None)]
}

/// CME Globex equity-index, FX, fixed-income futures: 17:00 prev — 16:00 today CT.
fn cme_globex_overnight_hours() -> TradingHours {
    TradingHours::from_sessions(
        vec![Session::overnight(
            NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
            NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        )],
        chrono_tz::America::Chicago,
    )
}

/// CME Globex energy & metals: 17:00 prev — 16:00 today CT (with one-hour
/// daily break that this layer treats as a single contiguous session).
fn cme_globex_energy_hours() -> TradingHours {
    TradingHours::from_sessions(
        vec![Session::overnight(
            NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
            NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        )],
        chrono_tz::America::Chicago,
    )
}

/// CBOE Futures Exchange (CFE) — full US holiday set, 08:30–15:15 CT regular.
fn cfe_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        nth(1, Weekday::Mon, 3),
        nth(2, Weekday::Mon, 3),
        easter(-2),
        nth(5, Weekday::Mon, -1),
        fixed(6, 19, Some(2022)),
        fixed(7, 4, None),
        nth(9, Weekday::Mon, 1),
        nth(11, Weekday::Thu, 4),
        fixed(12, 25, None),
    ]
}

fn cfe_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(8, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 15, 0).unwrap(),
        chrono_tz::America::Chicago,
    )
}

/// ICE US futures (energy, softs): 20:00 prev — 18:00 today ET.
fn ice_us_rules() -> Vec<HolidayRule> {
    vec![fixed(1, 1, None), easter(-2), fixed(12, 25, None)]
}

fn ice_us_hours() -> TradingHours {
    TradingHours::from_sessions(
        vec![Session::overnight(
            NaiveTime::from_hms_opt(20, 0, 0).unwrap(),
            NaiveTime::from_hms_opt(18, 0, 0).unwrap(),
        )],
        chrono_tz::America::New_York,
    )
}

/// SIFMA US bond market — recommended fixed-income closures.
fn sifma_us_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        nth(1, Weekday::Mon, 3),
        nth(2, Weekday::Mon, 3),
        easter(-2),
        nth(5, Weekday::Mon, -1),
        fixed(6, 19, Some(2022)),
        fixed(7, 4, None),
        nth(9, Weekday::Mon, 1),
        nth(10, Weekday::Mon, 2), // Columbus Day
        fixed(11, 11, None),      // Veterans Day
        nth(11, Weekday::Thu, 4),
        fixed(12, 25, None),
    ]
}

fn sifma_us_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(7, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::America::New_York,
    )
}

/// 24x5 spot FX — opens Sun 17:00 NY, closes Fri 17:00 NY. New Year's Day +
/// Christmas remain closed; otherwise no holidays.
fn forex_rules() -> Vec<HolidayRule> {
    vec![fixed(1, 1, None), fixed(12, 25, None)]
}

/// 24x7 crypto — no holidays.
fn crypto_rules() -> Vec<HolidayRule> {
    vec![]
}

fn lse_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        nth(5, Weekday::Mon, 1),
        nth(5, Weekday::Mon, -1),
        nth(8, Weekday::Mon, -1),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn lse_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(8, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 30, 0).unwrap(),
        chrono_tz::Europe::London,
    )
}

fn tse_rules() -> Vec<HolidayRule> {
    vec![
        fixed_no_roll(1, 1, None),
        fixed_no_roll(1, 2, None),
        fixed_no_roll(1, 3, None),
        nth(1, Weekday::Mon, 2),
        fixed_no_roll(2, 11, None),
        fixed_no_roll(2, 23, Some(2020)),
        fixed_no_roll(4, 29, None),
        fixed_no_roll(5, 3, None),
        fixed_no_roll(5, 4, None),
        fixed_no_roll(5, 5, None),
        nth(7, Weekday::Mon, 3),
        fixed_no_roll(8, 11, None),
        nth(9, Weekday::Mon, 3),
        nth(10, Weekday::Mon, 2),
        fixed_no_roll(11, 3, None),
        fixed_no_roll(11, 23, None),
        fixed_no_roll(12, 31, None),
    ]
}

fn tse_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::Asia::Tokyo,
    )
}

fn hkex_rules() -> Vec<HolidayRule> {
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 27),
        (2021, 2, 12),
        (2022, 2, 1),
        (2023, 1, 23),
        (2024, 2, 12),
        (2025, 1, 29),
        (2026, 2, 17),
        (2027, 2, 8),
        (2028, 1, 26),
        (2029, 2, 13),
        (2030, 2, 4),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed(7, 1, None),
        fixed(10, 1, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn hkex_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::Asia::Hong_Kong,
    )
}

fn sse_rules() -> Vec<HolidayRule> {
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 25),
        (2021, 2, 12),
        (2022, 2, 1),
        (2023, 1, 22),
        (2024, 2, 10),
        (2025, 1, 29),
        (2026, 2, 17),
        (2027, 2, 6),
        (2028, 1, 26),
        (2029, 2, 13),
        (2030, 2, 3),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        fixed(5, 1, None),
        fixed(10, 1, None),
        fixed(10, 2, None),
        fixed(10, 3, None),
    ]
}

fn sse_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::Asia::Shanghai,
    )
}

fn xetra_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed(10, 3, None),
        fixed(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
        fixed(12, 31, None),
    ]
}

fn xetra_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Berlin,
    )
}

fn euronext_paris_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn euronext_paris_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Paris,
    )
}

fn tsx_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        nth(2, Weekday::Mon, 3),
        easter(-2),
        nth(5, Weekday::Mon, -1),
        fixed(7, 1, None),
        nth(8, Weekday::Mon, 1),
        nth(9, Weekday::Mon, 1),
        nth(10, Weekday::Mon, 2),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn tsx_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::America::Toronto,
    )
}

fn asx_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        fixed(1, 26, None),
        easter(-2),
        easter(1),
        fixed(4, 25, None),
        nth(6, Weekday::Mon, 2),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn asx_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::Australia::Sydney,
    )
}

fn nse_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 26, None),
        fixed(8, 15, None),
        fixed(10, 2, None),
        fixed(12, 25, None),
    ]
}

fn nse_trading_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 15, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 30, 0).unwrap(),
        chrono_tz::Asia::Kolkata,
    )
}

// ---------- Early-close rule helpers ----------

fn ec(rule: HolidayRule, h: u32, m: u32) -> EarlyCloseRule {
    EarlyCloseRule {
        rule,
        close_time: NaiveTime::from_hms_opt(h, m, 0).unwrap(),
    }
}

/// NYSE/NASDAQ early closes (13:00 ET):
/// - Day after Thanksgiving (Black Friday)
/// - Christmas Eve when it falls on a weekday (Dec 24)
/// - July 3 when it falls on a weekday (day before Independence Day)
///
/// These are "best-effort" rules; the SEC/NYSE may publish ad-hoc deviations.
fn nyse_early_closes() -> Vec<EarlyCloseRule> {
    // Black Friday is the day after the 4th Thursday of November (i.e.
    // Thanksgiving + 1). Tabulated through 2035 — easily extended.
    static BLACK_FRIDAY: &[(i32, u32, u32)] = &[
        (2020, 11, 27),
        (2021, 11, 26),
        (2022, 11, 25),
        (2023, 11, 24),
        (2024, 11, 29),
        (2025, 11, 28),
        (2026, 11, 27),
        (2027, 11, 26),
        (2028, 11, 24),
        (2029, 11, 23),
        (2030, 11, 29),
        (2031, 11, 28),
        (2032, 11, 26),
        (2033, 11, 25),
        (2034, 11, 24),
        (2035, 11, 23),
    ];
    vec![
        ec(
            HolidayRule::Tabulated {
                table: BLACK_FRIDAY,
            },
            13,
            0,
        ),
        ec(fixed_no_roll(12, 24, None), 13, 0),
        ec(fixed_no_roll(7, 3, None), 13, 0),
    ]
}

// ---------- Additional non-US equity calendars ----------

/// Generic European Christian-calendar holidays: NY, Good Friday,
/// Easter Monday, May Day, Christmas, Boxing Day. Used as a baseline.
fn euro_basic_rules() -> Vec<HolidayRule> {
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

/// Euronext Amsterdam: same hours as Paris/Brussels/Lisbon (09:00–17:30 CET).
fn euronext_hours(tz: chrono_tz::Tz) -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        tz,
    )
}

fn xams_rules() -> Vec<HolidayRule> {
    // Amsterdam: NY, Good Friday, Easter Mon, King's Day (Apr 27, since 2014),
    // Ascension (+39), Whit Monday (+50), Christmas, Boxing Day.
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed_no_roll(4, 27, Some(2014)),
        easter(39),
        easter(50),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xbru_rules() -> Vec<HolidayRule> {
    // Brussels: NY, Good Friday, Easter Mon, Labour, Ascension, Whit Mon,
    // Christmas, Boxing Day.
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        easter(50),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xlis_rules() -> Vec<HolidayRule> {
    // Lisbon: subset of euro_basic + Carnival (Easter -47).
    let mut r = euro_basic_rules();
    r.push(easter(-47));
    r
}

fn xmil_rules() -> Vec<HolidayRule> {
    // Borsa Italiana (Milan): NY, Epiphany (Jan 6), Easter Mon, Liberation
    // Day (Apr 25), Labour, Republic Day (Jun 2), Assumption (Aug 15),
    // All Saints (Nov 1), Immaculate Conception (Dec 8), Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 6, None),
        easter(-2),
        easter(1),
        fixed_no_roll(4, 25, None),
        fixed(5, 1, None),
        fixed_no_roll(6, 2, None),
        fixed_no_roll(8, 15, None),
        fixed_no_roll(11, 1, None),
        fixed_no_roll(12, 8, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xmil_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Rome,
    )
}

fn xmad_rules() -> Vec<HolidayRule> {
    // BME Madrid: NY, Epiphany, Good Friday, Easter Mon, Labour,
    // Assumption, National Day (Oct 12), All Saints, Constitution (Dec 6),
    // Immaculate (Dec 8), Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 6, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed_no_roll(8, 15, None),
        fixed_no_roll(10, 12, None),
        fixed_no_roll(11, 1, None),
        fixed_no_roll(12, 6, None),
        fixed_no_roll(12, 8, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xmad_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Madrid,
    )
}

fn xswx_rules() -> Vec<HolidayRule> {
    // SIX Swiss: NY, Berchtold (Jan 2), Good Friday, Easter Mon, Labour,
    // Ascension, Whit Mon, Swiss National (Aug 1), Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 2, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        easter(50),
        fixed_no_roll(8, 1, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xswx_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Zurich,
    )
}

fn xosl_rules() -> Vec<HolidayRule> {
    // Oslo Børs: NY, Maundy Thu (-3), Good Friday, Easter Mon, Labour,
    // Constitution (May 17), Ascension, Whit Mon, Christmas Eve (half),
    // Christmas, Boxing, NYE (half).
    vec![
        fixed(1, 1, None),
        easter(-3),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed_no_roll(5, 17, None),
        easter(39),
        easter(50),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xosl_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 20, 0).unwrap(),
        chrono_tz::Europe::Oslo,
    )
}

fn xsto_rules() -> Vec<HolidayRule> {
    // Stockholm OMX: NY, Epiphany, Good Friday, Easter Mon, Labour,
    // Ascension, National Day (Jun 6), Midsummer Eve (Fri before Jun 20-26),
    // Christmas Eve, Christmas, Boxing, NYE.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 6, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        fixed_no_roll(6, 6, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
        fixed_no_roll(12, 31, None),
    ]
}

fn xsto_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Stockholm,
    )
}

fn xhel_rules() -> Vec<HolidayRule> {
    // Helsinki: NY, Epiphany, Good Friday, Easter Mon, Labour,
    // Ascension, Midsummer Eve (skip), Independence Day (Dec 6),
    // Christmas Eve, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 6, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        fixed_no_roll(12, 6, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xhel_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(18, 30, 0).unwrap(),
        chrono_tz::Europe::Helsinki,
    )
}

fn xcse_rules() -> Vec<HolidayRule> {
    // Copenhagen: NY, Maundy Thu, Good Friday, Easter Mon, Great Prayer Day
    // (was Easter+26, abolished 2024), Ascension, Constitution (Jun 5),
    // Christmas Eve, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        easter(-3),
        easter(-2),
        easter(1),
        easter(39),
        fixed_no_roll(6, 5, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xcse_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Europe::Copenhagen,
    )
}

fn xice_rules() -> Vec<HolidayRule> {
    // Iceland: NY, Maundy Thu, Good Fri, Easter Mon, First Day of Summer
    // (skip), Labour, Ascension, Whit Mon, National Day (Jun 17),
    // Commerce Day (skip), Christmas Eve, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        easter(-3),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        easter(50),
        fixed_no_roll(6, 17, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xice_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 30, 0).unwrap(),
        chrono_tz::Atlantic::Reykjavik,
    )
}

fn xwar_rules() -> Vec<HolidayRule> {
    // Warsaw: NY, Epiphany, Easter Mon, Labour, Constitution (May 3),
    // Corpus Christi (+60), Assumption, All Saints, Independence (Nov 11),
    // Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(1, 6, None),
        easter(1),
        fixed(5, 1, None),
        fixed_no_roll(5, 3, None),
        easter(60),
        fixed_no_roll(8, 15, None),
        fixed_no_roll(11, 1, None),
        fixed_no_roll(11, 11, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xwar_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Europe::Warsaw,
    )
}

fn xpra_rules() -> Vec<HolidayRule> {
    // Prague: NY, Good Friday, Easter Mon, Labour, Liberation (May 8),
    // Ss Cyril & Methodius (Jul 5), Jan Hus (Jul 6), Statehood (Sep 28),
    // Independence (Oct 28), Freedom (Nov 17), Christmas Eve, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        fixed_no_roll(5, 8, None),
        fixed_no_roll(7, 5, None),
        fixed_no_roll(7, 6, None),
        fixed_no_roll(9, 28, None),
        fixed_no_roll(10, 28, None),
        fixed_no_roll(11, 17, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xpra_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 25, 0).unwrap(),
        chrono_tz::Europe::Prague,
    )
}

fn xbud_rules() -> Vec<HolidayRule> {
    // Budapest: NY, 1848 Revolution (Mar 15), Good Friday, Easter Mon,
    // Labour, Whit Mon, State Foundation (Aug 20), 1956 Revolution (Oct 23),
    // All Saints, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed_no_roll(3, 15, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(50),
        fixed_no_roll(8, 20, None),
        fixed_no_roll(10, 23, None),
        fixed_no_roll(11, 1, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xbud_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Europe::Budapest,
    )
}

fn xwbo_rules() -> Vec<HolidayRule> {
    // Vienna (Wiener Börse): NY, Good Friday, Easter Mon, Labour,
    // Ascension, Whit Mon, Corpus Christi, Assumption, National (Oct 26),
    // All Saints, Immaculate (Dec 8), Christmas Eve, Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(1),
        fixed(5, 1, None),
        easter(39),
        easter(50),
        easter(60),
        fixed_no_roll(8, 15, None),
        fixed_no_roll(10, 26, None),
        fixed_no_roll(11, 1, None),
        fixed_no_roll(12, 8, None),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xwbo_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::Europe::Vienna,
    )
}

fn xdub_rules() -> Vec<HolidayRule> {
    // Euronext Dublin: NY, Saint Patrick (Mar 17), Good Friday, Easter Mon,
    // May Day (1st Mon), June Bank (1st Mon), August Bank (1st Mon),
    // October Bank (last Mon), Christmas, Boxing.
    vec![
        fixed(1, 1, None),
        fixed(3, 17, None),
        easter(-2),
        easter(1),
        nth(5, Weekday::Mon, 1),
        nth(6, Weekday::Mon, 1),
        nth(8, Weekday::Mon, 1),
        nth(10, Weekday::Mon, -1),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xdub_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(8, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 28, 0).unwrap(),
        chrono_tz::Europe::Dublin,
    )
}

// ---------- Asia / Pacific ----------

fn xkrx_rules() -> Vec<HolidayRule> {
    // Korea Exchange: tabulated lunar holidays (Seollal, Chuseok). For
    // accuracy these are baked in as lookup tables 2020-2030.
    let seollal: &'static [(i32, u32, u32)] = &[
        (2020, 1, 24),
        (2020, 1, 27),
        (2021, 2, 11),
        (2021, 2, 12),
        (2022, 1, 31),
        (2022, 2, 1),
        (2022, 2, 2),
        (2023, 1, 23),
        (2023, 1, 24),
        (2024, 2, 9),
        (2024, 2, 12),
        (2025, 1, 28),
        (2025, 1, 29),
        (2025, 1, 30),
        (2026, 2, 16),
        (2026, 2, 17),
        (2026, 2, 18),
    ];
    let chuseok: &'static [(i32, u32, u32)] = &[
        (2020, 9, 30),
        (2020, 10, 1),
        (2020, 10, 2),
        (2021, 9, 20),
        (2021, 9, 21),
        (2021, 9, 22),
        (2022, 9, 9),
        (2022, 9, 12),
        (2023, 9, 28),
        (2023, 9, 29),
        (2024, 9, 16),
        (2024, 9, 17),
        (2024, 9, 18),
        (2025, 10, 6),
        (2025, 10, 7),
        (2025, 10, 8),
        (2026, 9, 24),
        (2026, 9, 25),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: seollal },
        fixed_no_roll(3, 1, None),  // Independence Movement
        fixed_no_roll(5, 5, None),  // Children's Day
        fixed_no_roll(6, 6, None),  // Memorial Day
        fixed_no_roll(8, 15, None), // Liberation Day
        HolidayRule::Tabulated { table: chuseok },
        fixed_no_roll(10, 3, None), // National Foundation
        fixed_no_roll(10, 9, None), // Hangul Day
        fixed(12, 25, None),
    ]
}

fn xkrx_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 30, 0).unwrap(),
        chrono_tz::Asia::Seoul,
    )
}

fn xses_rules() -> Vec<HolidayRule> {
    // Singapore Exchange: NY, Lunar NY (use Shanghai's table), Good Friday,
    // Labour, Vesak Day (varies), National Day (Aug 9), Christmas. Vesak
    // and others use simplified handling.
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 24),
        (2021, 2, 12),
        (2022, 2, 1),
        (2023, 1, 23),
        (2024, 2, 12),
        (2025, 1, 29),
        (2026, 2, 17),
    ];
    let lny2: &'static [(i32, u32, u32)] = &[
        (2020, 1, 27),
        (2021, 2, 15),
        (2022, 2, 2),
        (2023, 1, 24),
        (2024, 2, 13),
        (2025, 1, 30),
        (2026, 2, 18),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        HolidayRule::Tabulated { table: lny2 },
        easter(-2),
        fixed(5, 1, None),
        fixed(8, 9, None),
        fixed(12, 25, None),
    ]
}

fn xses_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Asia::Singapore,
    )
}

fn xtai_rules() -> Vec<HolidayRule> {
    // Taiwan Stock Exchange: tabulated Lunar NY (5-7 day closure), Children's
    // Day (Apr 4), Tomb Sweeping (Apr 5), Dragon Boat, Mid-Autumn, ROC
    // National (Oct 10).
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 23),
        (2021, 2, 8),
        (2022, 1, 27),
        (2023, 1, 19),
        (2024, 2, 5),
        (2025, 1, 23),
        (2026, 2, 13),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        fixed_no_roll(2, 28, None), // Peace Memorial
        fixed_no_roll(4, 4, None),  // Children's
        fixed_no_roll(4, 5, None),  // Tomb Sweeping
        fixed(5, 1, None),
        fixed_no_roll(10, 10, None), // ROC National
    ]
}

fn xtai_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(13, 30, 0).unwrap(),
        chrono_tz::Asia::Taipei,
    )
}

fn xbkk_rules() -> Vec<HolidayRule> {
    // SET Bangkok: NY, Chakri Day (Apr 6), Songkran (Apr 13-15), Labour,
    // Coronation (May 4), Visakha (varies), Asanha (varies), Queen's
    // Birthday (Aug 12), King Bhumibol Memorial (Oct 13), Chulalongkorn
    // (Oct 23), King's Birthday (Dec 5), Constitution (Dec 10), NYE.
    vec![
        fixed(1, 1, None),
        fixed(4, 6, None),
        fixed_no_roll(4, 13, None),
        fixed_no_roll(4, 14, None),
        fixed_no_roll(4, 15, None),
        fixed(5, 1, None),
        fixed_no_roll(5, 4, None),
        fixed_no_roll(8, 12, None),
        fixed(10, 13, None),
        fixed(10, 23, None),
        fixed(12, 5, None),
        fixed(12, 10, None),
        fixed_no_roll(12, 31, None),
    ]
}

fn xbkk_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 30, 0).unwrap(),
        chrono_tz::Asia::Bangkok,
    )
}

fn xkls_rules() -> Vec<HolidayRule> {
    // Bursa Malaysia: NY, Lunar NY, Labour, Wesak, Yang di-Pertuan
    // Agong's Birthday (1st Mon Jun), National (Aug 31), Malaysia Day
    // (Sep 16), Christmas. Eid/Hari Raya are tabulated.
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 27),
        (2021, 2, 12),
        (2022, 2, 1),
        (2023, 1, 23),
        (2024, 2, 12),
        (2025, 1, 29),
        (2026, 2, 17),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        fixed(5, 1, None),
        nth(6, Weekday::Mon, 1),
        fixed(8, 31, None),
        fixed(9, 16, None),
        fixed(12, 25, None),
    ]
}

fn xkls_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Asia::Kuala_Lumpur,
    )
}

fn xidx_rules() -> Vec<HolidayRule> {
    // Indonesia: NY, Lunar NY, Labour, Pancasila (Jun 1), Independence
    // (Aug 17), Christmas. Religious dates simplified.
    let lny: &'static [(i32, u32, u32)] = &[
        (2020, 1, 27),
        (2021, 2, 12),
        (2022, 2, 1),
        (2023, 1, 23),
        (2024, 2, 8),
        (2025, 1, 29),
        (2026, 2, 17),
    ];
    vec![
        fixed(1, 1, None),
        HolidayRule::Tabulated { table: lny },
        fixed(5, 1, None),
        fixed(6, 1, None),
        fixed(8, 17, None),
        fixed(12, 25, None),
    ]
}

fn xidx_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 50, 0).unwrap(),
        chrono_tz::Asia::Jakarta,
    )
}

fn xphs_rules() -> Vec<HolidayRule> {
    // Philippine Stock Exchange: NY, Maundy Thu, Good Fri, Araw ng Kagitingan
    // (Apr 9), Labour, Independence (Jun 12), Ninoy Aquino (Aug 21), National
    // Heroes (last Mon Aug), All Saints, Bonifacio (Nov 30), Christmas,
    // Rizal Day (Dec 30), NYE.
    vec![
        fixed(1, 1, None),
        easter(-3),
        easter(-2),
        fixed(4, 9, None),
        fixed(5, 1, None),
        fixed(6, 12, None),
        fixed(8, 21, None),
        nth(8, Weekday::Mon, -1),
        fixed_no_roll(11, 1, None),
        fixed(11, 30, None),
        fixed(12, 25, None),
        fixed(12, 30, None),
        fixed_no_roll(12, 31, None),
    ]
}

fn xphs_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::Asia::Manila,
    )
}

fn xnze_rules() -> Vec<HolidayRule> {
    // NZX (New Zealand): NY (Jan 1, Jan 2 observed), Waitangi (Feb 6),
    // Good Fri, Easter Mon, ANZAC (Apr 25), King's Birthday (1st Mon Jun),
    // Matariki (variable, skipped here), Labour Day (4th Mon Oct),
    // Christmas, Boxing Day.
    vec![
        fixed(1, 1, None),
        fixed(1, 2, None),
        fixed(2, 6, None),
        easter(-2),
        easter(1),
        fixed(4, 25, None),
        nth(6, Weekday::Mon, 1),
        nth(10, Weekday::Mon, 4),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xnze_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 45, 0).unwrap(),
        chrono_tz::Pacific::Auckland,
    )
}

// ---------- EMEA ----------

fn xjse_rules() -> Vec<HolidayRule> {
    // Johannesburg: NY, Human Rights (Mar 21), Good Fri, Family Day (Easter
    // Mon), Freedom (Apr 27), Workers (May 1), Youth (Jun 16), National
    // Women's (Aug 9), Heritage (Sep 24), Day of Reconciliation (Dec 16),
    // Christmas, Day of Goodwill (Dec 26).
    vec![
        fixed(1, 1, None),
        fixed(3, 21, None),
        easter(-2),
        easter(1),
        fixed(4, 27, None),
        fixed(5, 1, None),
        fixed(6, 16, None),
        fixed(8, 9, None),
        fixed(9, 24, None),
        fixed(12, 16, None),
        fixed(12, 25, None),
        fixed(12, 26, None),
    ]
}

fn xjse_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::Africa::Johannesburg,
    )
}

/// Sun-Thu weekmask used by Saudi/Gulf venues. Mon=0, Sun=6.
const MIDEAST_WEEKMASK: [bool; 7] = [true, true, true, true, false, false, true];

fn xsau_rules() -> Vec<HolidayRule> {
    // Saudi Tadawul: National Day (Sep 23), Founding Day (Feb 22). Eid
    // dates vary by lunar calendar — kept tabulated for accuracy 2020-2026.
    let eid_fitr: &'static [(i32, u32, u32)] = &[
        (2020, 5, 24),
        (2021, 5, 13),
        (2022, 5, 2),
        (2023, 4, 21),
        (2024, 4, 10),
        (2025, 3, 30),
        (2026, 3, 20),
    ];
    let eid_adha: &'static [(i32, u32, u32)] = &[
        (2020, 7, 31),
        (2021, 7, 20),
        (2022, 7, 9),
        (2023, 6, 28),
        (2024, 6, 16),
        (2025, 6, 6),
        (2026, 5, 27),
    ];
    vec![
        fixed_no_roll(2, 22, Some(2022)),
        fixed_no_roll(9, 23, None),
        HolidayRule::Tabulated { table: eid_fitr },
        HolidayRule::Tabulated { table: eid_adha },
    ]
}

fn xsau_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::Asia::Riyadh,
    )
}

fn xist_rules() -> Vec<HolidayRule> {
    // Borsa Istanbul: NY, National Sovereignty (Apr 23), Labour (May 1),
    // Commemoration of Atatürk (May 19), Democracy (Jul 15), Victory (Aug 30),
    // Republic (Oct 29). Eid dates vary; tabulated.
    let eid_fitr: &'static [(i32, u32, u32)] = &[
        (2020, 5, 24),
        (2021, 5, 13),
        (2022, 5, 2),
        (2023, 4, 21),
        (2024, 4, 10),
        (2025, 3, 30),
        (2026, 3, 20),
    ];
    let eid_adha: &'static [(i32, u32, u32)] = &[
        (2020, 7, 31),
        (2021, 7, 20),
        (2022, 7, 9),
        (2023, 6, 28),
        (2024, 6, 16),
        (2025, 6, 6),
        (2026, 5, 27),
    ];
    vec![
        fixed(1, 1, None),
        fixed(4, 23, None),
        fixed(5, 1, None),
        fixed(5, 19, None),
        fixed(7, 15, None),
        fixed(8, 30, None),
        fixed(10, 29, None),
        HolidayRule::Tabulated { table: eid_fitr },
        HolidayRule::Tabulated { table: eid_adha },
    ]
}

fn xist_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(18, 0, 0).unwrap(),
        chrono_tz::Europe::Istanbul,
    )
}

/// Sun-Thu weekmask used by TASE.
const TASE_WEEKMASK: [bool; 7] = [true, true, true, true, false, false, true];

fn xtae_rules() -> Vec<HolidayRule> {
    // Tel Aviv Stock Exchange: tabulated Jewish holidays (Passover, Shavuot,
    // Rosh Hashanah, Yom Kippur, Sukkot, Simchat Torah, Independence Day).
    // Tabulated 2020-2026.
    let purim: &'static [(i32, u32, u32)] = &[
        (2020, 3, 10),
        (2021, 2, 26),
        (2022, 3, 17),
        (2023, 3, 7),
        (2024, 3, 24),
        (2025, 3, 14),
        (2026, 3, 3),
    ];
    let passover_eve: &'static [(i32, u32, u32)] = &[
        (2020, 4, 8),
        (2021, 3, 27),
        (2022, 4, 15),
        (2023, 4, 5),
        (2024, 4, 22),
        (2025, 4, 12),
        (2026, 4, 1),
    ];
    let shavuot: &'static [(i32, u32, u32)] = &[
        (2020, 5, 29),
        (2021, 5, 17),
        (2022, 6, 5),
        (2023, 5, 26),
        (2024, 6, 12),
        (2025, 6, 2),
        (2026, 5, 22),
    ];
    let rosh: &'static [(i32, u32, u32)] = &[
        (2020, 9, 19),
        (2021, 9, 7),
        (2022, 9, 26),
        (2023, 9, 16),
        (2024, 10, 3),
        (2025, 9, 23),
        (2026, 9, 12),
    ];
    let yom_kippur: &'static [(i32, u32, u32)] = &[
        (2020, 9, 28),
        (2021, 9, 16),
        (2022, 10, 5),
        (2023, 9, 25),
        (2024, 10, 12),
        (2025, 10, 2),
        (2026, 9, 21),
    ];
    let sukkot: &'static [(i32, u32, u32)] = &[
        (2020, 10, 3),
        (2021, 9, 21),
        (2022, 10, 10),
        (2023, 9, 30),
        (2024, 10, 17),
        (2025, 10, 7),
        (2026, 9, 26),
    ];
    let independence: &'static [(i32, u32, u32)] = &[
        (2020, 4, 29),
        (2021, 4, 15),
        (2022, 5, 5),
        (2023, 4, 26),
        (2024, 5, 14),
        (2025, 5, 1),
        (2026, 4, 22),
    ];
    vec![
        HolidayRule::Tabulated { table: purim },
        HolidayRule::Tabulated {
            table: passover_eve,
        },
        HolidayRule::Tabulated { table: shavuot },
        HolidayRule::Tabulated {
            table: independence,
        },
        HolidayRule::Tabulated { table: rosh },
        HolidayRule::Tabulated { table: yom_kippur },
        HolidayRule::Tabulated { table: sukkot },
    ]
}

fn xtae_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 59, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 14, 0).unwrap(),
        chrono_tz::Asia::Jerusalem,
    )
}

fn xdfm_rules() -> Vec<HolidayRule> {
    // Dubai Financial Market / ADX: NY, UAE National (Dec 2-3),
    // Commemoration (Nov 30). Eid tabulated.
    let eid_fitr: &'static [(i32, u32, u32)] = &[
        (2020, 5, 24),
        (2021, 5, 13),
        (2022, 5, 2),
        (2023, 4, 21),
        (2024, 4, 10),
        (2025, 3, 30),
        (2026, 3, 20),
    ];
    let eid_adha: &'static [(i32, u32, u32)] = &[
        (2020, 7, 31),
        (2021, 7, 20),
        (2022, 7, 9),
        (2023, 6, 28),
        (2024, 6, 16),
        (2025, 6, 6),
        (2026, 5, 27),
    ];
    vec![
        fixed(1, 1, None),
        fixed(11, 30, None),
        fixed(12, 2, None),
        fixed(12, 3, None),
        HolidayRule::Tabulated { table: eid_fitr },
        HolidayRule::Tabulated { table: eid_adha },
    ]
}

fn xdfm_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::Asia::Dubai,
    )
}

// ---------- LatAm ----------

fn bvmf_rules() -> Vec<HolidayRule> {
    // B3 / BMF Bovespa (São Paulo): NY, Carnival Mon (-48), Carnival Tue (-47),
    // Good Friday, Tiradentes (Apr 21), Labour, Corpus Christi (+60),
    // Independence (Sep 7), Our Lady of Aparecida (Oct 12), All Souls (Nov 2),
    // Republic (Nov 15), Black Awareness (Nov 20), Christmas Eve, Christmas, NYE.
    vec![
        fixed(1, 1, None),
        easter(-48),
        easter(-47),
        easter(-2),
        fixed(4, 21, None),
        fixed(5, 1, None),
        easter(60),
        fixed(9, 7, None),
        fixed(10, 12, None),
        fixed(11, 2, None),
        fixed(11, 15, None),
        fixed(11, 20, Some(2024)),
        fixed_no_roll(12, 24, None),
        fixed(12, 25, None),
        fixed_no_roll(12, 31, None),
    ]
}

fn bvmf_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(10, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 30, 0).unwrap(),
        chrono_tz::America::Sao_Paulo,
    )
}

fn xmex_rules() -> Vec<HolidayRule> {
    // BMV Mexico: NY, Constitution (1st Mon Feb), Benito Juárez (3rd Mon Mar),
    // Maundy Thu, Good Fri, Labour, Independence (Sep 16), Revolution
    // (3rd Mon Nov), Christmas.
    vec![
        fixed(1, 1, None),
        nth(2, Weekday::Mon, 1),
        nth(3, Weekday::Mon, 3),
        easter(-3),
        easter(-2),
        fixed(5, 1, None),
        fixed(9, 16, None),
        nth(11, Weekday::Mon, 3),
        fixed(12, 25, None),
    ]
}

fn xmex_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(8, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::America::Mexico_City,
    )
}

fn xbue_rules() -> Vec<HolidayRule> {
    // Buenos Aires (BYMA): NY, Carnival Mon/Tue, Truth & Justice (Mar 24),
    // Malvinas Day (Apr 2), Good Fri, Labour, May Revolution (May 25),
    // Flag Day (Jun 20), Independence (Jul 9), San Martín (3rd Mon Aug),
    // Diversity (Oct 12), Sovereignty (Nov 20), Immaculate, Christmas.
    vec![
        fixed(1, 1, None),
        easter(-48),
        easter(-47),
        fixed(3, 24, None),
        fixed(4, 2, None),
        easter(-2),
        fixed(5, 1, None),
        fixed(5, 25, None),
        fixed(6, 20, None),
        fixed(7, 9, None),
        nth(8, Weekday::Mon, 3),
        fixed(10, 12, None),
        fixed(11, 20, None),
        fixed(12, 8, None),
        fixed(12, 25, None),
    ]
}

fn xbue_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(11, 0, 0).unwrap(),
        NaiveTime::from_hms_opt(17, 0, 0).unwrap(),
        chrono_tz::America::Argentina::Buenos_Aires,
    )
}

fn xsgo_rules() -> Vec<HolidayRule> {
    // Santiago Stock Exchange: NY, Good Fri, Holy Sat, Labour, Navy Day
    // (May 21), Saint Peter & Paul (Jun 29), Virgen del Carmen (Jul 16),
    // Assumption, Independence (Sep 18-19), Columbus (Oct 12), Reformation
    // (Oct 31), All Saints, Immaculate, Christmas.
    vec![
        fixed(1, 1, None),
        easter(-2),
        easter(-1),
        fixed(5, 1, None),
        fixed(5, 21, None),
        fixed(6, 29, None),
        fixed(7, 16, None),
        fixed(8, 15, None),
        fixed(9, 18, None),
        fixed(9, 19, None),
        fixed(10, 12, None),
        fixed(10, 31, None),
        fixed(11, 1, None),
        fixed(12, 8, None),
        fixed(12, 25, None),
    ]
}

fn xsgo_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::America::Santiago,
    )
}

fn xlim_rules() -> Vec<HolidayRule> {
    // Lima Stock Exchange: NY, Maundy Thu, Good Fri, Labour, Saint Peter
    // & Paul, Independence (Jul 28-29), Santa Rosa (Aug 30), Battle of
    // Angamos (Oct 8), All Saints, Immaculate, Christmas.
    vec![
        fixed(1, 1, None),
        easter(-3),
        easter(-2),
        fixed(5, 1, None),
        fixed(6, 29, None),
        fixed(7, 28, None),
        fixed(7, 29, None),
        fixed(8, 30, None),
        fixed(10, 8, None),
        fixed(11, 1, None),
        fixed(12, 8, None),
        fixed(12, 25, None),
    ]
}

fn xlim_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(8, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(15, 0, 0).unwrap(),
        chrono_tz::America::Lima,
    )
}

fn xbog_rules() -> Vec<HolidayRule> {
    // Bogotá Stock Exchange (BVC): NY, Epiphany, Saint Joseph, Maundy Thu,
    // Good Fri, Labour, Ascension, Corpus Christi, Sacred Heart, Saint
    // Peter & Paul, Independence (Jul 20), Battle of Boyacá (Aug 7),
    // Assumption, Race Day (Oct 12), All Saints, Independence of Cartagena
    // (Nov 11), Immaculate, Christmas.
    vec![
        fixed(1, 1, None),
        fixed(1, 6, None),
        fixed(3, 19, None),
        easter(-3),
        easter(-2),
        fixed(5, 1, None),
        easter(39),
        easter(60),
        easter(68),
        fixed(7, 20, None),
        fixed(8, 7, None),
        fixed(8, 15, None),
        fixed(10, 12, None),
        fixed(11, 1, None),
        fixed(11, 11, None),
        fixed(12, 8, None),
        fixed(12, 25, None),
    ]
}

fn xbog_hours() -> TradingHours {
    TradingHours::new(
        NaiveTime::from_hms_opt(9, 30, 0).unwrap(),
        NaiveTime::from_hms_opt(16, 0, 0).unwrap(),
        chrono_tz::America::Bogota,
    )
}

// ---------- Calendar family resolver ----------

/// Logical calendar family. Many MICs share a family.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
enum Family {
    UsEquity,
    UsOptions,
    UsBondSifma,
    UsFuturesCme,
    UsFuturesCmeEnergy,
    UsFuturesIce,
    UsFuturesCfe,
    Forex24x5,
    Crypto24x7,
    Lse,
    Tse,
    Hkex,
    Sse,
    Xetra,
    EuronextParis,
    EuronextAms,
    EuronextBru,
    EuronextLis,
    EuronextDub,
    Tsx,
    Asx,
    Nse,
    Xmil,
    Xmad,
    Xswx,
    Xosl,
    Xsto,
    Xhel,
    Xcse,
    Xice,
    Xwar,
    Xpra,
    Xbud,
    Xwbo,
    Xkrx,
    Xses,
    Xtai,
    Xbkk,
    Xkls,
    Xidx,
    Xphs,
    Xnze,
    Xjse,
    Xsau,
    Xist,
    Xtae,
    Xdfm,
    Bvmf,
    Xmex,
    Xbue,
    Xsgo,
    Xlim,
    Xbog,
}

fn family_for_mic(mic: &str) -> Option<Family> {
    use Family::*;
    let m = match mic {
        // US equities
        "XNYS" | "NYSD" | "XCIS" | "CISD" | "XCHI" | "ARCX" | "ARCD" | "ARCO"
        | "XASE" | "AMXO" | "XNAS" | "XNGS" | "XNCM" | "XNMS" | "NASD" | "XNDQ"
        | "XBOS" | "BOSD" | "XBXO" | "XPHL" | "XPSX" | "PSXD" | "XPHO" | "XPBT"
        | "XPOR" | "XNFI" | "EDGA" | "EDGD" | "EDGX" | "EDDP" | "EDGO" | "BATS"
        | "BZXD" | "BATO" | "BATY" | "BYXD" | "MEMX" | "MEMD" | "IEXG" | "LTSE"
        | "MIHI" | "MPRL" | "EPRL" | "EPRD" | "XMIO" | "EMLD"
        // OTC / FINRA — share the NYSE holiday calendar
        | "OTCM" | "CAVE" | "OTCB" | "OTCQ" | "PINL" | "PINI" | "PINX" | "PSGM"
        | "PINC" | "FINR" | "FINN" | "FINC" | "FINY" | "XADF" | "FINO" | "OOTC"
        // Synthetic / placeholder venues
        | "XXXX" | "PYPR" | "SIMU" => UsEquity,
        // US options
        "XISE" | "GMNI" | "MCRY" | "XCBO" | "C2OX" | "MXOP" | "OPRA" => UsOptions,
        // US futures: CME group equity-index/FX/financials
        "XCME" | "FCME" | "GLBX" | "XCBT" | "FCBT" | "XKBT" => UsFuturesCme,
        // NYMEX (energy/metals) lives under CME group too but with energy hours
        "XNYM" => UsFuturesCmeEnergy,
        // CFE / ICE / SIFMA / FX / Crypto generic families
        "CFE" => UsFuturesCfe,
        "ICE_US" => UsFuturesIce,
        "SIFMA_US" => UsBondSifma,
        "FOREX" => Forex24x5,
        "CRYPTO" => Crypto24x7,
        // Canada
        "XTSE" | "XDRK" | "VDRK" | "XTSX" | "XTNX" | "XATS" | "XATX" | "ADRK"
        | "XMOD" | "XMOC" | "NEOE" | "NEOD" | "NEON" | "NEOC" | "XCNQ" | "PURE"
        | "CSE2" => Tsx,
        // Major non-US equities
        "XLON" => Lse,
        "XTKS" => Tse,
        "XHKG" => Hkex,
        "XSHG" => Sse,
        "XEUR" | "XFRA" => Xetra,
        "XPAR" => EuronextParis,
        "XAMS" => EuronextAms,
        "XBRU" => EuronextBru,
        "XLIS" => EuronextLis,
        "XDUB" => EuronextDub,
        "XMIL" => Xmil,
        "XMAD" => Xmad,
        "XSWX" => Xswx,
        "XOSL" => Xosl,
        "XSTO" => Xsto,
        "XHEL" => Xhel,
        "XCSE" => Xcse,
        "XICE" => Xice,
        "XWAR" => Xwar,
        "XPRA" => Xpra,
        "XBUD" => Xbud,
        "XWBO" => Xwbo,
        "XASX" => Asx,
        "XBOM" | "XNSE" => Nse,
        "XKRX" => Xkrx,
        "XSES" => Xses,
        "XTAI" => Xtai,
        "XBKK" => Xbkk,
        "XKLS" => Xkls,
        "XIDX" => Xidx,
        "XPHS" => Xphs,
        "XNZE" => Xnze,
        "XJSE" => Xjse,
        "XSAU" => Xsau,
        "XIST" => Xist,
        "XTAE" => Xtae,
        "XDFM" | "XADS" => Xdfm,
        "BVMF" => Bvmf,
        "XMEX" => Xmex,
        "XBUE" => Xbue,
        "XSGO" => Xsgo,
        "XLIM" => Xlim,
        "XBOG" => Xbog,
        _ => return None,
    };
    Some(m)
}

fn build_family(name: &str, fam: Family) -> Calendar {
    use Family::*;
    match fam {
        UsEquity => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            nyse_rules(),
            Some(nyse_trading_hours()),
        )
        .with_early_closes(nyse_early_closes()),
        UsOptions => Calendar::with_type(
            name,
            MarketType::Options,
            STANDARD_WEEKMASK,
            nyse_rules(),
            Some(options_trading_hours()),
        )
        .with_early_closes(nyse_early_closes()),
        UsBondSifma => Calendar::with_type(
            name,
            MarketType::Bond,
            STANDARD_WEEKMASK,
            sifma_us_rules(),
            Some(sifma_us_hours()),
        ),
        UsFuturesCme => Calendar::with_type(
            name,
            MarketType::Futures,
            STANDARD_WEEKMASK,
            cme_globex_rules(),
            Some(cme_globex_overnight_hours()),
        ),
        UsFuturesCmeEnergy => Calendar::with_type(
            name,
            MarketType::Futures,
            STANDARD_WEEKMASK,
            cme_globex_rules(),
            Some(cme_globex_energy_hours()),
        ),
        UsFuturesIce => Calendar::with_type(
            name,
            MarketType::Futures,
            STANDARD_WEEKMASK,
            ice_us_rules(),
            Some(ice_us_hours()),
        ),
        UsFuturesCfe => Calendar::with_type(
            name,
            MarketType::Futures,
            STANDARD_WEEKMASK,
            cfe_rules(),
            Some(cfe_trading_hours()),
        ),
        Forex24x5 => Calendar::with_type(
            name,
            MarketType::Fx,
            STANDARD_WEEKMASK,
            forex_rules(),
            Some(TradingHours::forex_24x5()),
        ),
        Crypto24x7 => Calendar::with_type(
            name,
            MarketType::Crypto,
            CRYPTO_WEEKMASK,
            crypto_rules(),
            Some(TradingHours::crypto_24x7()),
        ),
        Lse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            lse_rules(),
            Some(lse_trading_hours()),
        ),
        Tse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            tse_rules(),
            Some(tse_trading_hours()),
        ),
        Hkex => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            hkex_rules(),
            Some(hkex_trading_hours()),
        ),
        Sse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            sse_rules(),
            Some(sse_trading_hours()),
        ),
        Xetra => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xetra_rules(),
            Some(xetra_trading_hours()),
        ),
        EuronextParis => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            euronext_paris_rules(),
            Some(euronext_paris_trading_hours()),
        ),
        EuronextAms => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xams_rules(),
            Some(euronext_hours(chrono_tz::Europe::Amsterdam)),
        ),
        EuronextBru => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xbru_rules(),
            Some(euronext_hours(chrono_tz::Europe::Brussels)),
        ),
        EuronextLis => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xlis_rules(),
            Some(euronext_hours(chrono_tz::Europe::Lisbon)),
        ),
        EuronextDub => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xdub_rules(),
            Some(xdub_hours()),
        ),
        Tsx => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            tsx_rules(),
            Some(tsx_trading_hours()),
        ),
        Asx => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            asx_rules(),
            Some(asx_trading_hours()),
        ),
        Nse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            nse_rules(),
            Some(nse_trading_hours()),
        ),
        Xmil => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xmil_rules(),
            Some(xmil_hours()),
        ),
        Xmad => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xmad_rules(),
            Some(xmad_hours()),
        ),
        Xswx => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xswx_rules(),
            Some(xswx_hours()),
        ),
        Xosl => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xosl_rules(),
            Some(xosl_hours()),
        ),
        Xsto => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xsto_rules(),
            Some(xsto_hours()),
        ),
        Xhel => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xhel_rules(),
            Some(xhel_hours()),
        ),
        Xcse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xcse_rules(),
            Some(xcse_hours()),
        ),
        Xice => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xice_rules(),
            Some(xice_hours()),
        ),
        Xwar => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xwar_rules(),
            Some(xwar_hours()),
        ),
        Xpra => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xpra_rules(),
            Some(xpra_hours()),
        ),
        Xbud => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xbud_rules(),
            Some(xbud_hours()),
        ),
        Xwbo => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xwbo_rules(),
            Some(xwbo_hours()),
        ),
        Xkrx => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xkrx_rules(),
            Some(xkrx_hours()),
        ),
        Xses => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xses_rules(),
            Some(xses_hours()),
        ),
        Xtai => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xtai_rules(),
            Some(xtai_hours()),
        ),
        Xbkk => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xbkk_rules(),
            Some(xbkk_hours()),
        ),
        Xkls => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xkls_rules(),
            Some(xkls_hours()),
        ),
        Xidx => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xidx_rules(),
            Some(xidx_hours()),
        ),
        Xphs => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xphs_rules(),
            Some(xphs_hours()),
        ),
        Xnze => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xnze_rules(),
            Some(xnze_hours()),
        ),
        Xjse => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xjse_rules(),
            Some(xjse_hours()),
        ),
        Xsau => Calendar::with_type(
            name,
            MarketType::Equity,
            MIDEAST_WEEKMASK,
            xsau_rules(),
            Some(xsau_hours()),
        ),
        Xist => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xist_rules(),
            Some(xist_hours()),
        ),
        Xtae => Calendar::with_type(
            name,
            MarketType::Equity,
            TASE_WEEKMASK,
            xtae_rules(),
            Some(xtae_hours()),
        ),
        Xdfm => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xdfm_rules(),
            Some(xdfm_hours()),
        ),
        Bvmf => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            bvmf_rules(),
            Some(bvmf_hours()),
        ),
        Xmex => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xmex_rules(),
            Some(xmex_hours()),
        ),
        Xbue => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xbue_rules(),
            Some(xbue_hours()),
        ),
        Xsgo => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xsgo_rules(),
            Some(xsgo_hours()),
        ),
        Xlim => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xlim_rules(),
            Some(xlim_hours()),
        ),
        Xbog => Calendar::with_type(
            name,
            MarketType::Equity,
            STANDARD_WEEKMASK,
            xbog_rules(),
            Some(xbog_hours()),
        ),
    }
}

/// Build a calendar from its MIC code (or a generic family name like
/// `FOREX`, `CRYPTO`, `SIFMA_US`, `ICE_US`, `CFE`). Returns `None` if unknown.
pub fn calendar_for_exchange(code: &str) -> Option<Calendar> {
    let upper = code.to_ascii_uppercase();
    let fam = family_for_mic(&upper)?;
    Some(build_family(&upper, fam))
}

/// Build a calendar from a region code. Returns `None` if unknown.
pub fn calendar_for_region(code: &str) -> Option<Calendar> {
    match code.to_ascii_uppercase().as_str() {
        "US" => calendar_for_exchange("XNYS"),
        "UK" | "GB" => calendar_for_exchange("XLON"),
        "JP" => calendar_for_exchange("XTKS"),
        "HK" => calendar_for_exchange("XHKG"),
        "CN" => calendar_for_exchange("XSHG"),
        "DE" | "EU" => calendar_for_exchange("XFRA"),
        "FR" => calendar_for_exchange("XPAR"),
        "CA" => calendar_for_exchange("XTSE"),
        "AU" => calendar_for_exchange("XASX"),
        "IN" => calendar_for_exchange("XNSE"),
        "NL" => calendar_for_exchange("XAMS"),
        "BE" => calendar_for_exchange("XBRU"),
        "PT" => calendar_for_exchange("XLIS"),
        "IT" => calendar_for_exchange("XMIL"),
        "ES" => calendar_for_exchange("XMAD"),
        "CH" => calendar_for_exchange("XSWX"),
        "NO" => calendar_for_exchange("XOSL"),
        "SE" => calendar_for_exchange("XSTO"),
        "FI" => calendar_for_exchange("XHEL"),
        "DK" => calendar_for_exchange("XCSE"),
        "IS" => calendar_for_exchange("XICE"),
        "PL" => calendar_for_exchange("XWAR"),
        "CZ" => calendar_for_exchange("XPRA"),
        "HU" => calendar_for_exchange("XBUD"),
        "AT" => calendar_for_exchange("XWBO"),
        "IE" => calendar_for_exchange("XDUB"),
        "KR" => calendar_for_exchange("XKRX"),
        "SG" => calendar_for_exchange("XSES"),
        "TW" => calendar_for_exchange("XTAI"),
        "TH" => calendar_for_exchange("XBKK"),
        "MY" => calendar_for_exchange("XKLS"),
        "ID" => calendar_for_exchange("XIDX"),
        "PH" => calendar_for_exchange("XPHS"),
        "NZ" => calendar_for_exchange("XNZE"),
        "ZA" => calendar_for_exchange("XJSE"),
        "SA" => calendar_for_exchange("XSAU"),
        "TR" => calendar_for_exchange("XIST"),
        "IL" => calendar_for_exchange("XTAE"),
        "AE" => calendar_for_exchange("XDFM"),
        "BR" => calendar_for_exchange("BVMF"),
        "MX" => calendar_for_exchange("XMEX"),
        "AR" => calendar_for_exchange("XBUE"),
        "CL" => calendar_for_exchange("XSGO"),
        "PE" => calendar_for_exchange("XLIM"),
        "CO" => calendar_for_exchange("XBOG"),
        _ => None,
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use chrono::TimeZone;
    use chrono::Timelike;

    #[test]
    fn nyse_2024_business_day_count() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        let n = cal.business_days_between(
            NaiveDate::from_ymd_opt(2024, 1, 1).unwrap(),
            NaiveDate::from_ymd_opt(2024, 12, 31).unwrap(),
        );
        assert_eq!(n, 252);
    }

    #[test]
    fn nyse_christmas_2022_observed_monday() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2022, 12, 26).unwrap()));
    }

    #[test]
    fn nyse_juneteenth_first_year_2021() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        assert!(!cal.is_holiday(NaiveDate::from_ymd_opt(2020, 6, 19).unwrap()));
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2021, 6, 18).unwrap()));
    }

    #[test]
    fn lse_easter_monday_2024() {
        let cal = calendar_for_exchange("XLON").unwrap();
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 4, 1).unwrap()));
    }

    #[test]
    fn region_us_resolves_to_xnys() {
        let cal = calendar_for_region("US").unwrap();
        assert_eq!(cal.name, "XNYS");
    }

    #[test]
    fn nyse_is_open_at_market_open() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 1, 8, 9, 30, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
        let inst_b = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 1, 8, 9, 27, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(!cal.is_open(inst_b));
    }

    #[test]
    fn nyse_is_open_handles_dst() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 3, 11, 9, 30, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn cme_futures_open_sunday_evening() {
        // CME equity-index futures: Sun 18:00 CT should be in Mon's session.
        let cal = calendar_for_exchange("XCME").unwrap();
        assert_eq!(cal.market_type, MarketType::Futures);
        let inst = chrono_tz::America::Chicago
            .with_ymd_and_hms(2024, 1, 7, 18, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
        // Sat 03:00 CT — closed.
        let inst2 = chrono_tz::America::Chicago
            .with_ymd_and_hms(2024, 1, 13, 3, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(!cal.is_open(inst2));
    }

    #[test]
    fn nymex_energy_uses_chicago_tz() {
        let cal = calendar_for_exchange("XNYM").unwrap();
        assert_eq!(cal.market_type, MarketType::Futures);
        // Mon 09:00 CT → in session (started Sun 17:00 CT).
        let inst = chrono_tz::America::Chicago
            .with_ymd_and_hms(2024, 1, 8, 9, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn cfe_classifies_as_futures() {
        let cal = calendar_for_exchange("CFE").unwrap();
        assert_eq!(cal.market_type, MarketType::Futures);
        // Wed 09:00 CT — open.
        let inst = chrono_tz::America::Chicago
            .with_ymd_and_hms(2024, 1, 10, 9, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn forex_open_tuesday_3am() {
        let cal = calendar_for_exchange("FOREX").unwrap();
        assert_eq!(cal.market_type, MarketType::Fx);
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 1, 9, 3, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn crypto_open_saturday_3am() {
        let cal = calendar_for_exchange("CRYPTO").unwrap();
        assert_eq!(cal.market_type, MarketType::Crypto);
        let inst = chrono_tz::UTC
            .with_ymd_and_hms(2024, 1, 13, 3, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn options_close_at_1615() {
        let cal = calendar_for_exchange("OPRA").unwrap();
        assert_eq!(cal.market_type, MarketType::Options);
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 1, 8, 16, 10, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn sifma_includes_columbus_and_veterans() {
        let cal = calendar_for_exchange("SIFMA_US").unwrap();
        assert_eq!(cal.market_type, MarketType::Bond);
        // Veterans Day 2024 = Mon Nov 11.
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 11, 11).unwrap()));
        // Columbus Day 2024 = 2nd Mon Oct = Oct 14.
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 10, 14).unwrap()));
    }

    #[test]
    fn ice_us_uses_overnight_session() {
        let cal = calendar_for_exchange("ICE_US").unwrap();
        // Sun 21:00 NY should be in Mon's ICE session.
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 1, 7, 21, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst));
    }

    #[test]
    fn all_exchange_codes_resolve() {
        for code in EXCHANGE_CODES {
            assert!(
                calendar_for_exchange(code).is_some(),
                "MIC {} did not resolve",
                code
            );
        }
    }

    #[test]
    fn exchange_codes_are_sourced_from_finance_enums() {
        assert_eq!(EXCHANGE_CODES, finance_enums::data::ExchangeCode_VARIANTS);
        assert!(std::ptr::eq(
            EXCHANGE_CODES.as_ptr(),
            finance_enums::data::ExchangeCode_VARIANTS.as_ptr()
        ));
    }

    #[test]
    fn otc_inherits_nyse_holidays() {
        let cal = calendar_for_exchange("PINX").unwrap();
        assert_eq!(cal.market_type, MarketType::Equity);
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 7, 4).unwrap()));
    }

    #[test]
    fn canadian_calendar_for_neoe() {
        let cal = calendar_for_exchange("NEOE").unwrap();
        // Canada Day 2024 = Mon Jul 1.
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 7, 1).unwrap()));
    }

    #[test]
    fn nyse_july3_2024_is_early_close() {
        // July 4 2024 was Thursday; July 3 (Wed) had a 13:00 ET early close.
        let cal = calendar_for_exchange("XNYS").unwrap();
        let day = NaiveDate::from_ymd_opt(2024, 7, 3).unwrap();
        assert_eq!(
            cal.early_close_for(day),
            Some(NaiveTime::from_hms_opt(13, 0, 0).unwrap())
        );
        // 14:00 ET that day should be CLOSED.
        let inst = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 7, 3, 14, 0, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(!cal.is_open(inst));
        // 12:30 ET should be OPEN.
        let inst2 = chrono_tz::America::New_York
            .with_ymd_and_hms(2024, 7, 3, 12, 30, 0)
            .unwrap()
            .with_timezone(&Utc);
        assert!(cal.is_open(inst2));
    }

    #[test]
    fn nyse_black_friday_2024_early_close() {
        // 2024 Thanksgiving = Thu Nov 28; Black Friday = Nov 29.
        let cal = calendar_for_exchange("XNYS").unwrap();
        assert_eq!(
            cal.early_close_for(NaiveDate::from_ymd_opt(2024, 11, 29).unwrap()),
            Some(NaiveTime::from_hms_opt(13, 0, 0).unwrap())
        );
    }

    #[test]
    fn xams_kingsday_2024() {
        // Apr 27 2024 falls on a Saturday; King's Day skipped (no roll).
        // Test 2023 instead: Apr 27 2023 = Thursday, holiday.
        let cal = calendar_for_exchange("XAMS").unwrap();
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2023, 4, 27).unwrap()));
    }

    #[test]
    fn xkrx_seollal_2024_multi_day() {
        // Korean Lunar NY 2024 spans Feb 9 (Fri) and Feb 12 (Mon).
        let cal = calendar_for_exchange("XKRX").unwrap();
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 2, 9).unwrap()));
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 2, 12).unwrap()));
    }

    #[test]
    fn xtae_uses_sun_thu_weekmask() {
        let cal = calendar_for_exchange("XTAE").unwrap();
        // Sun May 5 2024 should be a business day at TASE.
        assert!(cal.is_business_day(NaiveDate::from_ymd_opt(2024, 5, 5).unwrap()));
        // Fri May 3 2024 — weekend.
        assert!(!cal.is_business_day(NaiveDate::from_ymd_opt(2024, 5, 3).unwrap()));
    }

    #[test]
    fn xsau_uses_sun_thu_weekmask() {
        let cal = calendar_for_exchange("XSAU").unwrap();
        assert!(cal.is_business_day(NaiveDate::from_ymd_opt(2024, 5, 5).unwrap()));
        assert!(!cal.is_business_day(NaiveDate::from_ymd_opt(2024, 5, 3).unwrap()));
    }

    #[test]
    fn bvmf_carnival_2024() {
        // 2024: Easter Apr 1 → Carnival Mon Feb 12, Tue Feb 13.
        let cal = calendar_for_exchange("BVMF").unwrap();
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 2, 12).unwrap()));
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 2, 13).unwrap()));
    }

    #[test]
    fn region_br_resolves_to_bvmf() {
        let cal = calendar_for_region("BR").unwrap();
        assert_eq!(cal.name, "BVMF");
    }

    #[test]
    fn xnze_waitangi_2024() {
        let cal = calendar_for_exchange("XNZE").unwrap();
        // Feb 6 2024 = Tuesday.
        assert!(cal.is_holiday(NaiveDate::from_ymd_opt(2024, 2, 6).unwrap()));
    }

    #[test]
    fn nyse_sessions_between_one_week_with_early_close() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        // Mon Jul 1 — Fri Jul 5 2024. Jul 4 = holiday; Jul 3 = early close.
        let s = cal.sessions_between(
            NaiveDate::from_ymd_opt(2024, 7, 1).unwrap(),
            NaiveDate::from_ymd_opt(2024, 7, 5).unwrap(),
        );
        assert_eq!(s.len(), 4);
        // Jul 3 close (3rd entry) should be 13:00 ET = 17:00 UTC (EDT = UTC-4).
        let jul3_close_local = s[2].1.with_timezone(&chrono_tz::America::New_York);
        assert_eq!(jul3_close_local.hour(), 13);
        assert_eq!(jul3_close_local.minute(), 0);
        // Jul 5 close (4th entry) should be 16:00 ET (regular).
        let jul5_close_local = s[3].1.with_timezone(&chrono_tz::America::New_York);
        assert_eq!(jul5_close_local.hour(), 16);
    }

    #[test]
    fn nyse_holidays_between_q3_2024() {
        let cal = calendar_for_exchange("XNYS").unwrap();
        let h = cal.holidays_between(
            NaiveDate::from_ymd_opt(2024, 7, 1).unwrap(),
            NaiveDate::from_ymd_opt(2024, 9, 30).unwrap(),
        );
        // Jul 4 (Independence Day) and Sep 2 (Labor Day).
        assert!(h.contains(&NaiveDate::from_ymd_opt(2024, 7, 4).unwrap()));
        assert!(h.contains(&NaiveDate::from_ymd_opt(2024, 9, 2).unwrap()));
        assert_eq!(h.len(), 2);
    }
}