using SVSim.BattleNode.Bridge;

namespace SVSim.EmulatedEntrypoint.Matching;

/// <summary>
/// Phase 3 hardcoded fixture: one stub bot per class (1..8). <c>ai_id</c> values are
/// the "series 1" tier from the client's <c>rm_ai_setting.csv</c> master table
/// (<c>1111</c>=Forest, <c>1121</c>=Sword, … <c>1181</c>=Portal). The client's
/// <c>RankMatchAISettingList.GetSettingData(aiId)</c> calls <c>.First(...)</c> against
/// this table and throws <c>InvalidOperationException</c> if the id is absent — so the
/// ids MUST match. See <c>data_dumps/client-assets/rm_ai_setting.csv</c> for the full
/// catalog (32 rows: classes 1-8 × tiers 1-2 × deck variants 1-2).
/// </summary>
public sealed class BotRoster : IBotRoster
{
    // Cosmetic ids (sleeve / emblem / degree / field) intentionally use safe
    // default values that match the master tables shipped in the project.
    // The client-side AI catalog reads ai_id but renders cosmetics from the
    // sleeveId/emblemId/etc returned here.
    private static readonly IReadOnlyList<AIBotProfile> Roster = new[]
    {
        new AIBotProfile(AiId: 1111, CountryCode: "NONE", UserName: "Forestcraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 1, CharaId: 1, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1121, CountryCode: "NONE", UserName: "Swordcraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 2, CharaId: 2, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1131, CountryCode: "NONE", UserName: "Runecraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 3, CharaId: 3, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1141, CountryCode: "NONE", UserName: "Dragoncraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 4, CharaId: 4, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1151, CountryCode: "NONE", UserName: "Shadowcraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 5, CharaId: 5, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1161, CountryCode: "NONE", UserName: "Bloodcraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 6, CharaId: 6, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1171, CountryCode: "NONE", UserName: "Havencraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 7, CharaId: 7, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
        new AIBotProfile(AiId: 1181, CountryCode: "NONE", UserName: "Portalcraft AI",
            SleeveId: 1001, EmblemId: 1, DegreeId: 1, FieldId: 1, IsOfficial: 0,
            ClassId: 8, CharaId: 8, Rank: 10, BattlePoint: 0, IsMasterRank: 0, MasterPoint: 0),
    };

    public AIBotProfile Pick(MatchContext selfCtx)
    {
        // Deterministic: hash the ctx and pick from the roster. Same ctx →
        // same bot so a mid-flight retry of /ai_<fmt>/start returns the same
        // opponent (no fresh roster pick on each call).
        var hash = StringComparer.Ordinal.GetHashCode(selfCtx.UserName)
            ^ StringComparer.Ordinal.GetHashCode(selfCtx.ClassId);
        var index = (int)((uint)hash % Roster.Count);
        return Roster[index];
    }
}