namespace HSchool.Content;

/// <summary>Bells and breaks of one school day. A catalog may have only one concrete frame.</summary>
public sealed class DayFrameDef : Def
{
    /// <summary>Local game-clock time of the first lesson, <c>HH:mm</c>.</summary>
    public string FirstLesson { get; init; } = "08:30";

    public int LessonCount { get; init; }

    public int LessonMinutes { get; init; }

    public int BreakMinutes { get; init; }

    /// <summary>The long break follows this 1-based lesson. Zero means every break is short.</summary>
    public int LongBreakAfter { get; init; }

    public int LongBreakMinutes { get; init; }

    /// <summary>
    /// Which break each parallel eats at. Empty means one sitting for the whole school, at
    /// <see cref="LongBreakAfter"/>. Every listed break is a long one, so a school that feeds its
    /// juniors and seniors separately gets two wide breaks rather than one crowded canteen.
    /// </summary>
    public IReadOnlyList<LunchBreakDef> LunchBreaks { get; init; } = [];
}

/// <summary>One lunch sitting: the break it happens at and the parallels it feeds.</summary>
public sealed class LunchBreakDef
{
    /// <summary>The sitting fills the break after this 1-based lesson.</summary>
    public int AfterLesson { get; init; }

    public int GradeMin { get; init; }

    public int GradeMax { get; init; }

    public bool Covers(int year) => year >= GradeMin && year <= GradeMax;
}

public sealed class MonthDay
{
    public int Month { get; init; }

    public int Day { get; init; }
}

/// <summary>
/// A holiday range in month-day, repeating every academic year. When start is after end
/// (winter), the range wraps across 1 January.
/// </summary>
public sealed class HolidayDef : Def
{
    public MonthDay Start { get; init; } = new();

    public MonthDay End { get; init; } = new();
}