/// ## Tasks (Polyglot)

/// ## task_name
nominal task_name = string

/// ## manual_scheduling
union manual_scheduling =
    | WithSuggestion
    | WithoutSuggestion

/// ## recurrency_offset
union recurrency_offset =
    | Days : int
    | Weeks : int
    | Months : int

/// ## fixed_recurrency
union fixed_recurrency =
    | Weekly : date_time.day_of_week
    | Monthly : date_time.day
    | Yearly : date_time.day * date_time.month

/// ## recurrency
union recurrency =
    | Offset : recurrency_offset
    | Fixed : list fixed_recurrency

/// ## scheduling
union scheduling =
    | Manual : manual_scheduling
    | Recurrent : recurrency

/// ## task
type task =
    {
        name : task_name
        scheduling : scheduling
    }

/// ## date
type date =
    {
        year : date_time.year
        month : date_time.month
        day : date_time.day
    }

/// ## status
union status =
    | Postponed : option ()

/// ## event
type event =
    {
        date : date
        status : status
    }

/// ## task_template
type task_template =
    {
        task : task
        events : list event
    }