#[derive(Debug, Clone, Eq, PartialEq)]

pub struct Date {

    pub year: u32,

    pub month: u8,

    pub day: u8,

}

#[derive(Debug, Clone, Eq, PartialEq, Default)]

pub struct Time {

    pub hour: u8,

    pub minute: u8,

    pub second: u8,

    pub is_utc: bool,

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub struct DateTime {

    pub date: Date,

    pub time: Time,

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub struct Duration {

    pub sign: i8,

    pub weeks: Option<u64>,

    pub days: Option<u64>,

    pub hours: Option<u64>,

    pub minutes: Option<u64>,

    pub seconds: Option<u64>,

}

impl Default for Duration {

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub struct Period {

    pub start: DateTime,

    pub end: PeriodEnd,

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub enum PeriodEnd {

    DateTime(DateTime),

    Duration(Duration),

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub struct UtcOffset {

    pub sign: i8,

    pub hours: u64,

    pub minutes: u64,

    pub seconds: Option<u64>,

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub enum DateOrDateTime {

    Date(Date),

    DateTime(DateTime),

}

#[derive(Debug, Clone, Eq, PartialEq)]

pub enum DateOrDateTimeOrPeriod {

    Date(Date),

    DateTime(DateTime),

    Period(Period),

}