PHASEXave 1.8.2

/*
 * Copyright 2024 Stanislav Mikhailov (xavetar)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

pub use crate::types::data::date::{Date};

use crate::types::{
    data::{
        time::{Time},
        zone::{Sign, Zone}
    },
    planets::{
        earth::{
            calendar::{
                view::{CalendarView},
                constants::{
                    months::{Months},
                }
            }
        },
    },
};

#[cfg(any(
    feature = "platform_specific_functions_darwin",
    feature = "platform_specific_functions_unix",
    feature = "platform_specific_functions_windows"
))]
use crate::{
    platform::{
        tz::{local_timezone}
    }
};
 
impl Date {
    pub fn utc(view: CalendarView) -> Date {
        return Self::of(
            view,
            Time::unix().as_secs() as u128,
            Zone {
                sign: Sign::Unsigned,
                hours: 0, minutes: 0,
                seconds: 0
            },
            true
        );
    }

    pub fn now(view: CalendarView, time_zone: Zone) -> Date {
        return Self::of(view, Time::unix().as_secs() as u128, time_zone, false);
    }

    #[cfg(any(
        feature = "platform_specific_functions_darwin",
        feature = "platform_specific_functions_unix",
        feature = "platform_specific_functions_windows"
    ))]
    pub fn local(view: CalendarView) -> Date {
        return Self::of(view, Time::unix().as_secs() as u128, local_timezone(), false);
    }

    pub fn from(view: CalendarView, unix_time: u128, time_zone: Zone, zone_in_unix: bool) -> Date {
        return Self::of(view, unix_time, time_zone, zone_in_unix);
    }

    pub fn month(&self) -> Months {
        return Months::from(self.month);
    }
}

#[cfg(test)]
mod tests {

    use super::{
        CalendarView,
        Date, Sign, Zone,
        local_timezone
    };

    use libc::{
        time_t, tm,
        gmtime_r, localtime_r
    };

    use crate::{
        types::{
            planets::{
                earth::{
                    calendar::{
                        constants::{
                            seconds::{SECONDS_IN_DAY}
                        }
                    }
                }
            }
        }
    };

    #[test]
    fn test_gmt_date_from_libc() {
        let mut date_struct_libc: tm = unsafe { std::mem::zeroed::<tm>() };

        let gmt_time_zone: Zone = Zone { sign: Sign::Unsigned, hours: 0_u8, minutes: 0_u8, seconds: 0_u8 };

        let current_seconds: u64 = Date::now(CalendarView::Gregorian, gmt_time_zone).unix_time as u64;

        for unix_time in (0..=current_seconds).step_by(SECONDS_IN_DAY as usize) {
            let time_c: time_t = unix_time as time_t;

            if unsafe { gmtime_r(&time_c, &mut date_struct_libc) } == std::ptr::null_mut() {
                panic!("[ERROR]: Pointer is NULL (gmtime_r)!")
            }

            let date: Date = Date::from(CalendarView::Gregorian, unix_time as u128, gmt_time_zone, false);

            assert_eq!(
                (
                    (date_struct_libc.tm_year + 1900) as u64,
                    (date_struct_libc.tm_mon + 1) as u8,
                    (date_struct_libc.tm_mday) as u8,
                    date_struct_libc.tm_gmtoff.unsigned_abs() as u32
                ),
                (
                    date.year,
                    date.month,
                    date.day,
                    date.time_zone.to_seconds()
                )
            )
        }
    }

    #[test]
    #[cfg(any(
        feature = "platform_specific_functions_darwin",
        feature = "platform_specific_functions_unix",
        feature = "platform_specific_functions_windows"
    ))]
    fn test_fuzz_date_with_libc() {
        let (mut date, mut sign): (Date, Sign);

        let mut date_struct_libc: tm = unsafe { std::mem::zeroed::<tm>() };

        let current_seconds: u64 = Date::now(CalendarView::Gregorian, local_timezone()).unix_time as u64;

        for unix_time in (0..=current_seconds).step_by(SECONDS_IN_DAY as usize) {
            let time_c: time_t = unix_time as time_t;

            if unsafe { localtime_r(&time_c, &mut date_struct_libc) } == std::ptr::null_mut() {
                panic!("[ERROR]: Pointer is NULL (localtime_r)!")
            }

            if date_struct_libc.tm_gmtoff < 0 { sign = Sign::Signed } else { sign = Sign::Unsigned };

            date = Date::from(CalendarView::Gregorian, unix_time as u128, Zone::from_seconds(sign, date_struct_libc.tm_gmtoff.unsigned_abs() as u32), false);

            assert_eq!(
                (
                    (date_struct_libc.tm_year + 1900) as u64,
                    (date_struct_libc.tm_mon + 1) as u8,
                    (date_struct_libc.tm_mday) as u8,
                    (date_struct_libc.tm_gmtoff).unsigned_abs() as u32
                ),
                (
                    date.year,
                    date.month,
                    date.day,
                    date.time_zone.to_seconds()
                )
            )
        }
    }
}