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use core::any::{Any, TypeId};
use core::cell::RefCell;
use alloc::string::ToString;
use alloc::string::String;
use alloc::sync::Arc;
use chrono::{Datelike, Duration, Local, NaiveDate};
use crate::app::Session;
use crate::compiler::duration::DurationItem;
use crate::config::SmartCalcConfig;
use crate::formatter::{MONTH, YEAR, get_month_info, left_padding, uppercase_first_letter};
use crate::types::{TokenType, TimeOffset};
use super::{DataItem, OperationType, UnaryType};
#[derive(Debug)]
pub struct DateItem(pub NaiveDate, pub TimeOffset);
impl DateItem {
pub fn get_date(&self) -> NaiveDate {
self.0.clone()
}
pub fn get_tz(&self) -> TimeOffset {
self.1.clone()
}
fn get_month_from_duration(&self, duration: Duration) -> i64 {
duration.num_seconds().abs() / MONTH
}
fn get_year_from_duration(&self, duration: Duration) -> i64 {
duration.num_seconds().abs() / YEAR
}
}
impl DataItem for DateItem {
fn as_token_type(&self) -> TokenType {
TokenType::Date(self.0, self.1.clone())
}
fn is_same<'a>(&self, other: &'a dyn Any) -> bool {
match other.downcast_ref::<NaiveDate>() {
Some(l_value) => l_value == &self.0,
None => false
}
}
fn as_any(&self) -> &dyn Any { self }
fn calculate(&self, _: &SmartCalcConfig, _: bool, other: &dyn DataItem, operation_type: OperationType) -> Option<Arc<dyn DataItem>> {
if other.type_name() != "DURATION" {
return None;
}
let mut date = self.0;
let mut duration = other.as_any().downcast_ref::<DurationItem>().unwrap().get_duration();
return match operation_type {
OperationType::Add => {
match self.get_year_from_duration(duration) {
0 => (),
n => {
let years_diff = date.year() + n as i32;
date = NaiveDate::from_ymd(years_diff as i32, date.month() as u32, date.day());
duration = Duration::seconds(duration.num_seconds() - (YEAR * n))
}
};
match self.get_month_from_duration(duration) {
0 => (),
n => {
let years_diff = (date.month() + n as u32) / 12;
let month = (date.month() + n as u32) % 12;
date = NaiveDate::from_ymd(date.year() + years_diff as i32, month as u32, date.day());
duration = Duration::seconds(duration.num_seconds() - (MONTH * n))
}
};
Some(Arc::new(DateItem(date + duration, self.1.clone())))
},
OperationType::Sub => {
match self.get_year_from_duration(duration) {
0 => (),
n => {
let years_diff = date.year() - n as i32;
date = NaiveDate::from_ymd(years_diff as i32, date.month() as u32, date.day());
duration = Duration::seconds(duration.num_seconds() - (YEAR * n))
}
};
match self.get_month_from_duration(duration) {
0 => (),
n => {
let years = date.year() - (n as i32 / 12);
let mut months = date.month() as i32 - (n as i32 % 12);
if months < 0 {
months += 12;
}
date = NaiveDate::from_ymd(years as i32, months as u32, date.day());
duration = Duration::seconds(duration.num_seconds() - (MONTH * n))
}
};
Some(Arc::new(DateItem(date - duration, self.1.clone())))
},
_ => None
};
}
fn get_number(&self, _: &dyn DataItem) -> f64 {
self.get_underlying_number()
}
fn get_underlying_number(&self) -> f64 { 0.0 }
fn type_name(&self) -> &'static str { "DATE" }
fn type_id(&self) -> TypeId { TypeId::of::<DateItem>() }
fn print(&self, config: &SmartCalcConfig, session: &RefCell<Session>) -> String {
let format = match config.format.get( &session.borrow().get_language()) {
Some(formats) => formats,
_ => match config.format.get( "en") {
Some(formats) => formats,
_ => return "".to_string()
}
};
let date_format = match self.0.year() == Local::now().date().year() {
true => format.date.get("current_year"),
false => format.date.get("full_date")
};
match date_format {
Some(data) => {
match get_month_info(config, &format.language, self.0.month() as u8) {
Some(month_info) => data.clone()
.replace("{day}", &self.0.day().to_string())
.replace("{month}", &self.0.month().to_string())
.replace("{day_pad}", &left_padding(self.0.day().into(), 2))
.replace("{month_pad}", &left_padding(self.0.month().into(), 2))
.replace("{month_long}", &uppercase_first_letter(&month_info.long))
.replace("{month_short}", &uppercase_first_letter(&month_info.short))
.replace("{year}", &self.0.year().to_string())
.replace("{timezone}", &self.1.name),
None => self.0.to_string()
}
},
None => self.0.to_string()
}
}
fn unary(&self, _: UnaryType) -> Arc<dyn DataItem> {
Arc::new(Self(self.0, self.1.clone()))
}
}
#[cfg(test)]
#[test]
fn date_test() {
use crate::compiler::date::DateItem;
use crate::compiler::duration::DurationItem;
use crate::config::SmartCalcConfig;
let config = SmartCalcConfig::default();
let session = RefCell::new(Session::default());
assert_eq!(DateItem(NaiveDate::from_ymd(2020, 1, 1), config.get_time_offset()).print(&config, &session), "1 Jan 2020".to_string());
let left = DateItem(NaiveDate::from_ymd(2020, 1, 1), config.get_time_offset());
let right = DateItem(NaiveDate::from_ymd(2020, 1, 1), config.get_time_offset());
let result = left.calculate(&config, true, &right, OperationType::Sub);
assert!(result.is_none());
let left = DateItem(NaiveDate::from_ymd(2020, 1, 1), config.get_time_offset());
let right = DurationItem(Duration::hours(24 * 20));
let result = left.calculate(&config, true, &right, OperationType::Add);
assert!(result.is_some());
assert_eq!(result.unwrap().print(&config, &session), "21 Jan 2020".to_string());
}
