namespace HSchool.Content;

public enum DefKind
{
    Action,
    Thing,
    Position,
    Work,
    Room,
    Building,
    Floor,
    Territory,
    Skill,
    Trait,
    BodyAttribute,
    Need,
    Country,
    ClimatePreset,
    Subject,
    Staffing,
    DayFrame,
    Holiday,
    Behavior,
    Color,
    Topic,
    Orientation,
    AffinityRules,
    Event,
    Disease,
}

/// <summary>Shared JSONC fields. Kind comes from the folder under <c>defs/</c>, not from the file.</summary>
public abstract class Def
{
    public required string DefName { get; init; }

    public string? Parent { get; init; }

    public bool Abstract { get; init; }
}

public sealed class ActionDef : Def
{
    /// <summary>RoomDef or TerritoryDef where this is done. Required on concrete actions.</summary>
    public string? Room { get; init; }

    /// <summary>Thing occupied for the duration. Null means the room itself is enough.</summary>
    public string? Thing { get; init; }

    /// <summary>Game minutes the action takes. Applied in full when it completes.</summary>
    public float Minutes { get; init; }

    /// <summary>NeedDef refilled on completion. Null for walks and other leisure with no refill.</summary>
    public string? Need { get; init; }

    /// <summary>Added to the need in one shot when the action finishes, then clamped to min–max.</summary>
    public float NeedGain { get; init; }

    /// <summary>Empty means every role. Values are <see cref="PersonRoles"/> ids.</summary>
    public IReadOnlyList<string> Roles { get; init; } = [];

    /// <summary>Leisure weight. Zero means phase 21 will not pick this for fun — only for a need.</summary>
    public float Weight { get; init; }

    /// <summary>
    /// A sitting rather than something done whenever the need bites: only offered during the
    /// eater's own lunch break (<see cref="DayFrameDef.LunchBreaks"/>). Without it a hungry class
    /// would walk out of a lesson to the canteen, and the whole school would arrive at once.
    /// </summary>
    public bool Lunch { get; init; }
}

public sealed class ThingDef : Def
{
    public IReadOnlyList<string> Actions { get; init; } = [];

    /// <summary>
    /// How many pupils this thing hosts for lessons. Zero for teacher's furniture — a chair
    /// must not inflate class size just because someone sits in it.
    /// </summary>
    public int PupilSlots { get; init; }

    /// <summary>Layers this occupies when worn. Empty — not apparel, so it can sit on the map.</summary>
    public IReadOnlyList<string> Layers { get; init; } = [];

    /// <summary>
    /// Worn layers fully hidden beneath this piece while condition stays above torn.
    /// Example: pants list <see cref="ApparelLayers.Underwear"/>.
    /// </summary>
    public IReadOnlyList<string> FullyCoversLayers { get; init; } = [];

    /// <summary>Can live in a bag, locker or at home. Furniture stays false.</summary>
    public bool Portable { get; init; }

    /// <summary>Kilograms. Carried mass sums; worn mass does not in this slice.</summary>
    public float Mass { get; init; }

    /// <summary>How much it warms — and how much it steams in heat.</summary>
    public float Insulation { get; init; }

    /// <summary>0–100. Dress-code formality, not a fashion score.</summary>
    public int Formality { get; init; }

    /// <summary>Allowed age window. Omit for any age.</summary>
    public IntRange? Age { get; init; }

    /// <summary><c>male</c>, <c>female</c>, or omit for any.</summary>
    public string? Sex { get; init; }

    /// <summary>ColorDef ids this thing may be. Empty — the instance has no colour.</summary>
    public IReadOnlyList<string> Colors { get; init; } = [];

    /// <summary><see cref="SkirtLengths"/> id, or omit when there is no hem to measure.</summary>
    public string? SkirtLength { get; init; }

    /// <summary>PE kit. Worn for that lesson; not a second wardrobe of everyday clothes.</summary>
    public bool Pe { get; init; }

    /// <summary>
    /// Chance the dress generator issues this portable non-apparel item. 0 — not rolled (textbooks
    /// are granted per subject instead). Apparel ignores this and fills layers.
    /// </summary>
    public float CarryChance { get; init; }

    /// <summary>Portrait fragment when this thing is in the person's frame. Null or empty — silent.</summary>
    public PromptContribution? Prompt { get; init; }
}

public sealed class PositionDef : Def;

public sealed class WorkDef : Def;

public sealed class RoomSlot
{
    public required string Key { get; init; }

    public required string Thing { get; init; }

    public int Count { get; init; } = 1;
}

public sealed class RoomDef : Def
{
    public IReadOnlyList<RoomSlot> Slots { get; init; } = [];

    public IReadOnlyList<string> Positions { get; init; } = [];

    public IReadOnlyList<string> Works { get; init; } = [];

    /// <summary>
    /// When true, a map room of this def with pupil slots becomes a roster class.
    /// Labs keep <see cref="ThingDef.PupilSlots"/> for lessons without forming a homeroom.
    /// Homerooms are a seat count of <see cref="SeatThing"/>, not a table of named slots.
    /// </summary>
    public bool Homeroom { get; init; }

    /// <summary>Thing whose <see cref="ThingDef.PupilSlots"/> × map seats is class capacity.</summary>
    public string? SeatThing { get; init; }

    /// <summary>Editor default when placing a new homeroom. Vanilla classrooms are 16.</summary>
    public int DefaultSeats { get; init; }

    /// <summary>Game minutes spent occupying this room when walking through it.</summary>
    public float TravelMinutes { get; init; }

    /// <summary>
    /// Outdoor like the yard: porch, crossing between buildings. Indoor rooms stay warmer than
    /// the street by the climate preset's wall offset.
    /// </summary>
    public bool Outdoor { get; init; }

    /// <summary>
    /// When set, pupil lockers in this room go to students of that sex (<c>male</c> / <c>female</c>).
    /// </summary>
    public string? LockerSex { get; init; }

    /// <summary>Portrait fragment when the person is in a room of this def. Null or empty — silent.</summary>
    public PromptContribution? Prompt { get; init; }
}

public sealed class BuildingDef : Def;

public sealed class FloorDef : Def;

public sealed class TerritoryDef : Def
{
    /// <summary>Game minutes spent occupying the yard when walking through it.</summary>
    public float TravelMinutes { get; init; }

    /// <summary>Portrait fragment when the person is in this yard. Null or empty — silent.</summary>
    public PromptContribution? Prompt { get; init; }
}