use std::collections::{HashSet, HashMap};
use std::fs::File;
use std::io::Read;
use chrono::{Duration, Datelike};
use num_traits::FromPrimitive;
use regex::Regex;
use serde::Deserialize;
use serde::de::{Deserializer, Error};
use crate::brokers::Broker;
use crate::core::GenericResult;
use crate::formatting;
use crate::localities::{self, Country};
use crate::taxes::{TaxPaymentDay, TaxRemapping};
use crate::types::{Date, Decimal};
use crate::util::{self, DecimalRestrictions};
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct Config {
#[serde(skip)]
pub db_path: String,
#[serde(skip, default = "default_expire_time")]
pub cache_expire_time: Duration,
#[serde(default)]
pub deposits: Vec<DepositConfig>,
pub notify_deposit_closing_days: Option<u32>,
#[serde(default)]
pub portfolios: Vec<PortfolioConfig>,
pub brokers: Option<BrokersConfig>,
pub alphavantage: Option<AlphaVantageConfig>,
pub finnhub: Option<FinnhubConfig>,
pub twelvedata: Option<TwelveDataConfig>,
}
impl Config {
#[cfg(test)]
pub fn mock() -> Config {
Config {
db_path: "/mock".to_owned(),
cache_expire_time: default_expire_time(),
deposits: Vec::new(),
notify_deposit_closing_days: None,
portfolios: Vec::new(),
brokers: Some(BrokersConfig::mock()),
alphavantage: None,
finnhub: None,
twelvedata: None,
}
}
pub fn get_portfolio(&self, name: &str) -> GenericResult<&PortfolioConfig> {
for portfolio in &self.portfolios {
if portfolio.name == name {
return Ok(portfolio)
}
}
Err!("{:?} portfolio is not defined in the configuration file", name)
}
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct DepositConfig {
pub name: String,
#[serde(deserialize_with = "deserialize_date")]
pub open_date: Date,
#[serde(deserialize_with = "deserialize_date")]
pub close_date: Date,
#[serde(default)]
pub currency: Option<String>,
pub amount: Decimal,
pub interest: Decimal,
#[serde(default)]
pub capitalization: bool,
#[serde(default, deserialize_with = "deserialize_cash_flows")]
pub contributions: Vec<(Date, Decimal)>,
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct PortfolioConfig {
pub name: String,
pub broker: Broker,
pub plan: Option<String>,
pub statements: String,
#[serde(default)]
tax_remapping: Vec<TaxRemappingConfig>,
pub currency: Option<String>,
pub min_trade_volume: Option<Decimal>,
pub min_cash_assets: Option<Decimal>,
pub restrict_buying: Option<bool>,
pub restrict_selling: Option<bool>,
#[serde(default)]
pub merge_performance: HashMap<String, HashSet<String>>,
#[serde(default)]
pub assets: Vec<AssetAllocationConfig>,
#[serde(default, deserialize_with = "deserialize_tax_payment_day")]
pub tax_payment_day: TaxPaymentDay,
#[serde(default, deserialize_with = "deserialize_cash_flows")]
pub tax_deductions: Vec<(Date, Decimal)>,
}
impl PortfolioConfig {
pub fn get_stock_symbols(&self) -> HashSet<String> {
let mut symbols = HashSet::new();
for asset in &self.assets {
asset.get_stock_symbols(&mut symbols);
}
symbols
}
pub fn get_tax_country(&self) -> Country {
localities::russia()
}
pub fn get_tax_remapping(&self) -> GenericResult<TaxRemapping> {
let mut remapping = TaxRemapping::new();
for config in &self.tax_remapping {
remapping.add(config.date, &config.description, config.to_date)?;
}
Ok(remapping)
}
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
struct TaxRemappingConfig {
#[serde(deserialize_with = "deserialize_date")]
pub date: Date,
pub description: String,
#[serde(deserialize_with = "deserialize_date")]
pub to_date: Date,
}
#[derive(Deserialize, Debug)]
pub struct AssetAllocationConfig {
pub name: String,
pub symbol: Option<String>,
#[serde(deserialize_with = "deserialize_weight")]
pub weight: Decimal,
pub restrict_buying: Option<bool>,
pub restrict_selling: Option<bool>,
pub assets: Option<Vec<AssetAllocationConfig>>,
}
impl AssetAllocationConfig {
fn get_stock_symbols(&self, symbols: &mut HashSet<String>) {
if let Some(ref symbol) = self.symbol {
symbols.insert(symbol.to_owned());
}
if let Some(ref assets) = self.assets {
for asset in assets {
asset.get_stock_symbols(symbols);
}
}
}
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct BrokersConfig {
pub bcs: Option<BrokerConfig>,
pub interactive_brokers: Option<BrokerConfig>,
pub open_broker: Option<BrokerConfig>,
pub tinkoff: Option<BrokerConfig>,
}
impl BrokersConfig {
#[cfg(test)]
pub fn mock() -> BrokersConfig {
BrokersConfig {
bcs: Some(BrokerConfig::mock()),
interactive_brokers: Some(BrokerConfig::mock()),
open_broker: Some(BrokerConfig::mock()),
tinkoff: Some(BrokerConfig::mock()),
}
}
}
#[derive(Deserialize, Debug, Clone)]
#[serde(deny_unknown_fields)]
pub struct BrokerConfig {
pub deposit_commissions: HashMap<String, TransactionCommissionSpec>,
}
impl BrokerConfig {
#[cfg(test)]
pub fn mock() -> BrokerConfig {
BrokerConfig {
deposit_commissions: HashMap::new(),
}
}
}
#[derive(Deserialize, Debug, Clone)]
#[serde(deny_unknown_fields)]
pub struct TransactionCommissionSpec {
pub fixed_amount: Decimal,
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct AlphaVantageConfig {
pub api_key: String,
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct FinnhubConfig {
pub token: String,
}
#[derive(Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct TwelveDataConfig {
pub token: String,
}
pub fn load_config(path: &str) -> GenericResult<Config> {
let mut data = Vec::new();
File::open(path)?.read_to_end(&mut data)?;
let mut config: Config = serde_yaml::from_slice(&data)?;
for deposit in &config.deposits {
if deposit.open_date > deposit.close_date {
return Err!(
"Invalid {:?} deposit dates: {} -> {}",
deposit.name, formatting::format_date(deposit.open_date),
formatting::format_date(deposit.close_date));
}
for &(date, _amount) in &deposit.contributions {
if date < deposit.open_date || date > deposit.close_date {
return Err!(
"Invalid {:?} deposit contribution date: {}",
deposit.name, formatting::format_date(date));
}
}
}
{
let mut portfolio_names = HashSet::new();
for portfolio in &config.portfolios {
if !portfolio_names.insert(&portfolio.name) {
return Err!("Duplicate portfolio name: {:?}", portfolio.name);
}
if let Some(ref currency) = portfolio.currency {
match currency.as_str() {
"RUB" | "USD" => (),
_ => return Err!("Unsupported portfolio currency: {}", currency),
};
}
let mut symbols_to_merge: HashSet<&String> = HashSet::new();
for (master_symbol, slave_symbols) in &portfolio.merge_performance {
if !symbols_to_merge.insert(master_symbol) {
return Err!(
"Invalid performance merging configuration: Duplicated {} symbol",
master_symbol);
}
for slave_symbol in slave_symbols {
if !symbols_to_merge.insert(slave_symbol) {
return Err!(
"Invalid performance merging configuration: Duplicated {} symbol",
slave_symbol);
}
}
}
}
}
for portfolio in &mut config.portfolios {
portfolio.statements = shellexpand::tilde(&portfolio.statements).to_string();
}
Ok(config)
}
fn default_expire_time() -> Duration {
Duration::minutes(1)
}
fn deserialize_tax_payment_day<'de, D>(deserializer: D) -> Result<TaxPaymentDay, D::Error>
where D: Deserializer<'de>
{
let tax_payment_day: String = Deserialize::deserialize(deserializer)?;
if tax_payment_day == "on-close" {
return Ok(TaxPaymentDay::OnClose);
}
Ok(Regex::new(r"^(?P<day>[0-9]+)\.(?P<month>[0-9]+)$").unwrap().captures(&tax_payment_day).and_then(|captures| {
let day = captures.name("day").unwrap().as_str().parse::<u32>().ok();
let month = captures.name("month").unwrap().as_str().parse::<u32>().ok();
let (day, month) = match (day, month) {
(Some(day), Some(month)) => (day, month),
_ => return None,
};
if Date::from_ymd_opt(util::today().year(), month, day).is_none() || (day, month) == (29, 2) {
return None;
}
Some(TaxPaymentDay::Day {month, day})
}).ok_or_else(|| D::Error::custom(format!("Invalid tax payment day: {:?}", tax_payment_day)))?)
}
fn deserialize_cash_flows<'de, D>(deserializer: D) -> Result<Vec<(Date, Decimal)>, D::Error>
where D: Deserializer<'de>
{
let deserialized: HashMap<String, String> = Deserialize::deserialize(deserializer)?;
let mut cash_flows = Vec::new();
for (date, amount) in deserialized {
let date = util::parse_date(&date, "%d.%m.%Y").map_err(D::Error::custom)?;
let amount = util::parse_decimal(&amount, DecimalRestrictions::StrictlyPositive).map_err(|_|
D::Error::custom(format!("Invalid amount: {:?}", amount)))?;
cash_flows.push((date, amount));
}
cash_flows.sort_by_key(|cash_flow| cash_flow.0);
Ok(cash_flows)
}
fn deserialize_date<'de, D>(deserializer: D) -> Result<Date, D::Error>
where D: Deserializer<'de>
{
let date: String = Deserialize::deserialize(deserializer)?;
Ok(util::parse_date(&date, "%d.%m.%Y").map_err(D::Error::custom)?)
}
fn deserialize_weight<'de, D>(deserializer: D) -> Result<Decimal, D::Error>
where D: Deserializer<'de>
{
let weight: String = Deserialize::deserialize(deserializer)?;
if !weight.ends_with('%') {
return Err(D::Error::custom(format!("Invalid weight: {}", weight)));
}
let weight = match weight[..weight.len() - 1].parse::<u8>().ok() {
Some(weight) if weight <= 100 => weight,
_ => return Err(D::Error::custom(format!("Invalid weight: {}", weight))),
};
Ok(Decimal::from_u8(weight).unwrap() / dec!(100))
}