namespace BardFrontline.Core;

public enum BattlefieldMode { None, Frontline, RivalWings }

public static class Battlefield
{
    // BNpcName row IDs from local client reference data, never localized display-name matching.
    public static ObjectiveKind Classify(BattlefieldMode mode, bool npc, bool warmachina, uint nameId)
    {
        if (warmachina && mode == BattlefieldMode.RivalWings) return ObjectiveKind.Mech;
        if (!npc) return ObjectiveKind.Other;
        if (mode == BattlefieldMode.Frontline && nameId is >= 4822 and <= 4837 or >= 4840 and <= 4845) return ObjectiveKind.Ice;
        if (mode != BattlefieldMode.RivalWings) return ObjectiveKind.Other;
        return nameId switch
        {
            6857 or 6858 => ObjectiveKind.Core,
            >= 6859 and <= 6862 => ObjectiveKind.Tower,
            >= 6863 and <= 6868 => ObjectiveKind.Mech,
            >= 6869 and <= 6872 or 7889 or 7890 or 14252 or 14253 => ObjectiveKind.Infantry,
            7891 or 7892 or 7906 => ObjectiveKind.Mercenary,
            _ => ObjectiveKind.Other,
        };
    }
    public static string KindName(ObjectiveKind kind) => kind switch
    {
        ObjectiveKind.Mech => "机甲", ObjectiveKind.Infantry => "兵线", ObjectiveKind.Mercenary => "佣兵",
        ObjectiveKind.Tower => "防御塔", ObjectiveKind.Core => "核心", ObjectiveKind.Ice => "冰块", _ => "其他目标",
    };
    // TerritoryIntendedUse values from the client sheet / FFXIVClientStructs enum.
    public static BattlefieldMode Identify(uint intendedUse, bool pvp) => !pvp ? BattlefieldMode.None : intendedUse switch
    {
        18 => BattlefieldMode.Frontline,
        39 => BattlefieldMode.RivalWings,
        _ => BattlefieldMode.None,
    };

    public static string Name(BattlefieldMode mode) => mode switch
    {
        BattlefieldMode.Frontline => "纷争前线",
        BattlefieldMode.RivalWings => "烈羽争锋",
        _ => "不支持的区域",
    };

    // Content key 1 is the Rival Wings ManeuversArmor row. Check both it and the
    // warmachina status to cover transitions without relying on an ordinary mount flag.
    public static bool IsPiloting(BattlefieldMode mode, bool pilotingCondition, bool warmachinaStatus, uint armor) =>
        mode == BattlefieldMode.RivalWings && (pilotingCondition || warmachinaStatus || armor != 0);

    public static bool IsBattleNpcCandidate(byte subKind, uint owner) =>
        subKind is 0 or 1 or 5 && owner is 0 or 0xE0000000;
}