import { OtherDataType } from '../game/GameDataEnums';
import { RankDataManager } from './RankDataManager';
import { DailyWinStats } from './DailyWinStats';
import { RankBoardManager } from './RankBoardManager';
import { AiBattleBridge } from '../battle/ai/bridge/AiBattleBridge';
import { MatchStreakStats } from './MatchStreakStats';
import { HeadIconManager } from './HeadIconManager';
import { EmolumentDataManager } from './EmolumentDataManager';

/** 单方胜负场次 */
export type MatchWinRecord = {
    /** 胜场 */
    win: number;
    /** 负场 */
    lose: number;
};

/** 匹配页抽出、进战后由开战消耗的对手快照 */
let _pendingOpponentRankId = 0;
/** 匹配抽出的对手总星（与 rankId 同次抽取） */
let _pendingOpponentStars = 0;

/**
 * 匹配胜率：玩家战绩进 doc；各对手段位进 onlyLocal。
 * 每日跨天清零；无对局记 0%。
 */
export class MatchWinStats {
    /** 读档 / 打开匹配页 / 结算前确保仍为当日统计 */
    static ensureToday(): void {
        const today = this._todayKey();
        const saved = String(gg.data.doc?.matchWinStatsDate ?? '').trim();
        if (saved === today) return;

        gg.data.doc.matchWinCount = 0;
        gg.data.doc.matchLoseCount = 0;
        gg.data.doc.matchWinStatsDate = today;
        gg.data.setkeyKeyValueDayClear(OtherDataType.MatchAiWinStats, true);
        gg.data.saveLocal();
        console.log('[MatchWinStats] 跨天重置胜率', today);
    }

    /** 跨天回调（GameData.onFirstLoginToday） */
    static onCrossDay(): void {
        this.ensureToday();
    }

    /** 按当前段位抽出本局对手，供匹配页展示、进战复用 */
    static ensurePendingOpponentRank(): number {
        if (_pendingOpponentRankId > 0) return _pendingOpponentRankId;
        const profile = AiBattleBridge.inst.buildMatchProfile();
        if (profile && profile.opponentRankId > 0) {
            _pendingOpponentRankId = profile.opponentRankId;
            _pendingOpponentStars = RankDataManager.clampRankStars(profile.opponentStars);
            return _pendingOpponentRankId;
        }
        const match = RankDataManager.resolveOpponentStarMatch();
        if (match && match.opponentRankId > 0) {
            _pendingOpponentRankId = match.opponentRankId;
            _pendingOpponentStars = RankDataManager.clampRankStars(match.opponentStars);
            return _pendingOpponentRankId;
        }
        const id = RankDataManager.pickOpponentRankId();
        _pendingOpponentRankId = id > 0 ? id : 0;
        _pendingOpponentStars = _pendingOpponentRankId > 0
            ? RankDataManager.getPlayerRankStars()
            : 0;
        if (_pendingOpponentRankId > 0) {
            console.log('[MatchWinStats] 对手星快照缺失，回退玩家总星', _pendingOpponentRankId, _pendingOpponentStars);
        }
        return _pendingOpponentRankId;
    }

    /** 查看 pending 对手段位，不消耗 */
    static peekPendingOpponentRankId(): number {
        return _pendingOpponentRankId;
    }

    /** 查看 pending 对手总星，不消耗 */
    static peekPendingOpponentStars(): number {
        return _pendingOpponentStars;
    }

    /** 开局消耗；无 pending 时返回 0 */
    static takePendingOpponentRankId(): number {
        const id = _pendingOpponentRankId;
        _pendingOpponentRankId = 0;
        _pendingOpponentStars = 0;
        return id;
    }

    /** 玩家胜负场次 */
    static getPlayerRecord(): MatchWinRecord {
        this.ensureToday();
        const win = Math.max(0, Math.floor(Number(gg.data.doc?.matchWinCount) || 0));
        const lose = Math.max(0, Math.floor(Number(gg.data.doc?.matchLoseCount) || 0));
        return { win, lose };
    }

    /** 玩家胜率 0~100 */
    static getPlayerWinRate(): number {
        return this.toRate(this.getPlayerRecord());
    }

    /**
     * 某对手段位的胜负场次
     * @param opponentRankId Rank 表 id
     */
    static getAiRecord(opponentRankId: number): MatchWinRecord {
        this.ensureToday();
        const id = Math.floor(Number(opponentRankId) || 0);
        if (id <= 0) return { win: 0, lose: 0 };
        const raw = String(gg.data.getkeyKeyValue(OtherDataType.MatchAiWinStats, id, true) ?? '');
        const parts = raw.split('&');
        const win = Math.max(0, Math.floor(Number(parts[0]) || 0));
        const lose = Math.max(0, Math.floor(Number(parts[1]) || 0));
        return { win, lose };
    }

    /**
     * 某对手段位胜率 0~100
     * @param opponentRankId Rank 表 id
     */
    static getAiWinRate(opponentRankId: number): number {
        return this.toRate(this.getAiRecord(opponentRankId));
    }

    /**
     * 胜率百分比
     * @param rec 胜负场次
     */
    static toRate(rec: MatchWinRecord): number {
        const total = rec.win + rec.lose;
        if (total <= 0) return 0;
        return (rec.win / total) * 100;
    }

    /**
     * 结算一场（平局不记）。
     * 玩家胜：玩家胜场 +1，该对手负场 +1；反之亦然。
     * @param playerWin 玩家是否获胜
     * @param opponentRankId 对手段位 id
     */
    static record(playerWin: boolean, opponentRankId: number, opts?: { save?: boolean }): void {
        const p = this.getPlayerRecord();
        if (playerWin) p.win += 1;
        else p.lose += 1;
        gg.data.doc.matchWinCount = p.win;
        gg.data.doc.matchLoseCount = p.lose;
        MatchStreakStats.applyBattleResult(playerWin, { save: false });

        if (playerWin) {
            DailyWinStats.recordWin({ save: false });
            void RankBoardManager.syncSelfDailyWins();
        }

        const starsChanged = RankDataManager.applyBattleResult(playerWin, { save: false });
        if (starsChanged) {
            HeadIconManager.onRankStarsChanged();
            void RankBoardManager.syncSelfScore();
        }

        EmolumentDataManager.syncAfterBattle(playerWin, starsChanged);

        const id = Math.floor(Number(opponentRankId) || 0);
        let aiRec: MatchWinRecord | null = null;
        if (id > 0) {
            aiRec = this.getAiRecord(id);
            if (playerWin) aiRec.lose += 1;
            else aiRec.win += 1;
            gg.data.setkeyKeyValue(OtherDataType.MatchAiWinStats, id, `${aiRec.win}&${aiRec.lose}`, true);
        }

        if (opts?.save !== false) gg.data.saveLocal();
        const aiPart = aiRec ? ` ai=${aiRec.win}/${aiRec.win + aiRec.lose}` : '';
        console.log(
            `[MatchWinStats] record playerWin=${playerWin ? 1 : 0} oppRank=${id}`
            + ` player=${p.win}/${p.win + p.lose}`
            + ` streakW=${MatchStreakStats.getWinStreak()} streakL=${MatchStreakStats.getLoseStreak()}${aiPart}`,
        );
    }

    /** 今日日期键 yyyyMMdd */
    private static _todayKey(): string {
        const d = new Date(gg.data.getCurentTime2());
        const y = d.getFullYear();
        const m = `${d.getMonth() + 1}`.padStart(2, '0');
        const day = `${d.getDate()}`.padStart(2, '0');
        return `${y}${m}${day}`;
    }
}