import {Card} from "../rooms/schema/Card";
import arrUtil from "./array.util";
import {EffectCardCfg} from "../cfg/parsers/EffectCardCfg";
import {BaseConst} from "../constants/BaseConst";
import {SkillTargetType} from "../rooms/logic/skill/SkillConst";
import CfgMan from "../rooms/logic/CfgMan";
import {CardGameState} from "../rooms/schema/CardGameState";
import {Player} from "../rooms/schema/Player";
import {HeroCfg} from "../cfg/parsers/HeroCfg";
import {EffectType} from "../cfg/enums/EffectType";
import {CardType} from "../cfg/enums/CardType";
import {GameEnv} from "../cfg/GameEnv";
import {error, robotLog} from "../common/Debug";

let assistantUtil = {

    /**
     * 检查是否可以吃牌
     * @param cardArr   待检查的卡组
     * @param card 目标牌
     */
    checkTriple(cardArr: Card[], card?: Card): Card[] {
        if (card) cardArr.push(card);
        let maxCount = card ? new GameEnv().otherEatCount : new GameEnv().selfEatCount;
        let pointMap: Map<number, Card[]> = new Map();
        let cardIdSet: Set<number> = new Set();
        for (let c of cardArr) {
            if (!(c.type == CardType.general || c.type == CardType.variable_unit)) {
                continue;
            }
            if (pointMap.has(c.number)) {
                let arr = pointMap.get(c.number);
                arr.push(c);
                pointMap.set(c.number, arr);
            } else {
                pointMap.set(c.number, [c]);
            }
            cardIdSet.add(c.number);
        }
        let fetched = false;
        let result: Card[] = [];
        // 优先出对子
        for (let [point, arr] of pointMap) {
            if (card) {
                if (point == card.number && arr.length >= maxCount) {
                    fetched = true;
                    result = arr;
                    break;
                }
            } else {
                if (arr.length >= maxCount) {
                    fetched = true;
                    result = arr;
                    break;
                }
            }

        }
        if (fetched) {
            return result;
        }

        let cardIds = [...cardIdSet];
        cardIds.sort((a, b) => a - b);
        let tmp = [];
        for (let i = 0, length = cardIds.length; i < length; i++) {
            let cur = cardIds[i];
            i == 0 && tmp.push(cur);
            if (i > 0) {
                if (cur != tmp[i - 1] + 1) {
                    tmp.length = 0;
                }
                tmp.push(cur);
            }
            if (card) {
                if (tmp.indexOf(card.number) >= 0 && tmp.length >= maxCount) {
                    break;
                }
            } else {
                if (tmp.length >= maxCount) {
                    break;
                }
            }
        }

        if (tmp.length >= maxCount) {
            let subTmp = [];
            for (let i = tmp[0] - 1; i > 0; i--) {
                if (cardIdSet.has(i)) {
                    subTmp.push(i);
                } else {
                    break;
                }
            }
            for (let i = tmp[tmp.length]; i < cardIdSet.size; i++) {
                if (cardIdSet.has(i)) {
                    subTmp.push(i);
                } else {
                    break;
                }
            }
            tmp = tmp.concat(subTmp);
            for (let point of tmp) {
                if (card && point === card.number) {
                    result.push(card);
                } else {
                    result.push(pointMap.get(point)[0]);
                }
            }
            return result;
        } else {
            return arrUtil.randomGet(cardArr, 1);
        }
    },
    /**
     * 随机获取敌对玩家
     * @private
     */
    getEnemyPlayer(dstPlayer: Player, state: CardGameState): Player {
        let enemys = [];
        for (let [, player] of state.players) {
            if (player.team !== dstPlayer.team) {
                enemys.push(player);
            }
        }
        return arrUtil.randomOne(enemys);
    },

    /**
     * 随机获取可用的随从
     * @param player
     * @private
     */
    getRandomPet(player: Player): number {
        let pets = [];
        for (let [, pet] of player.pets) {
            if (pet.ap > 0 && pet.state == 1)
                pets.push(pet);
        }
        let result;
        if (pets.length > 0) {
            result = arrUtil.randomOne(pets);
        }
        return result ? result.pos : -1;
    },
    /**
     * 选择一个法术或者一个随从
     * @private
     */
    async selectPet(dstPlayer: Player, state: CardGameState) {
        let cards = [...state.cards.values()];
        let result: Card;
        let effectMap: Map<number, EffectCardCfg> = global.$cfg.get(BaseConst.EFFECTCARD);
        let spellCards: Card[] = [];
        let petCards: Card[] = [];

        // 优先取随从
        let petCount = 0;
        for (let [,pet] of dstPlayer.pets) {
            if (pet.state == 1 && !pet.isHero) petCount ++;
        }
        let noMorePet = petCount >= new GameEnv().maxPlayerPetCount;

        let noPet = Math.random2(0, 100) > 70;

        for (let card of cards) {
            if (card.type == CardType.variable_unit) {
                petCards.push(card);
            } else if (card.type == CardType.general) {
                spellCards.push(card);
            }
        }
        if (!noMorePet && !noPet && petCards.length > 0) {
            result = petCards.randomOne();
        }

        if (!result && spellCards.length > 0) {
            result = spellCards.randomOne();
        }
        let oldpos = -1;
        if (!result && petCards.length > 0) {
            result = petCards.randomOne();
            if (noMorePet) {
                oldpos = 1;
            }
        }

        if (!result) {
            error(`无法选择随从或法术, 随从数: ${petCount}, 法术牌数量: ${spellCards.length}`);
            return null;
        }
        robotLog(`select_pet ${dstPlayer.id}: ${result.effect} 类型: ${effectMap.get(result.effect).type_id == EffectType.skill ? '法术' : '随从'}`)
        let targetType: SkillTargetType = CfgMan.getTargetByCard(result.effect);
        let targetPlayer;
        let targetPos;
        switch (targetType) {
            case SkillTargetType.ENEMY_PLAYER:
                targetPlayer = this.getEnemyPlayer(dstPlayer, state);
                break;
            case SkillTargetType.ENEMY_PET:
                for (let [, player] of state.players) {
                    if (player.team !== dstPlayer.team) {
                        let pos = this.getRandomPet(player);
                        if (pos > -1) {
                            targetPlayer = player;
                            targetPos = pos;
                            break;
                        }
                    }
                }
                break;
            case SkillTargetType.FRIEND_PET:
                for (let [, player] of state.players) {
                    if (player.team == dstPlayer.team) {
                        let pos = this.getRandomPet(player);
                        if (pos > -1) {
                            targetPlayer = player;
                            targetPos = pos;
                            break;
                        }
                    }
                }
                break;
            case SkillTargetType.SELF_PET:
                let pos = this.getRandomPet(dstPlayer);
                if (pos > -1) {
                    targetPlayer = dstPlayer;
                    targetPos = pos;
                    break;
                }
                break;
        }
        //TODO: 增加效果卡
        let effCards: number[] = [];
        for (let [,card] of dstPlayer.cards) {
            if (card.type == CardType.double_effect || card.type == CardType.double_point) {
                effCards.push(card.id);
            }
        }
        return {
            card: result.id,
            player: targetPlayer?.id,
            pos: targetPos,
            effCards,
            oldpos
        }

    },
    randomHero() {
        let heroMap: Map<number, HeroCfg> = global.$cfg.get(BaseConst.HERO);
        let heroArr = [...heroMap.values()];
        let hero = arrUtil.randomGet(heroArr, 1);
        return {heroId: hero[0].id}
    }
}

export default assistantUtil;