import {createGameCommandRegistry} from "@/core/game";
import {RegicideState} from "@/samples/regicide/state";

export const registry = createGameCommandRegistry<RegicideState>();

/**
 * 打出一张牌
 */
const playCmd = registry.register({
    schema: 'play <player:string> <cardId:string>',
    run: async (game, player, cardId) => {
        const state = game.value;
        const card = state.cards[cardId];

        if (!card) {
            return {success: false, error: `卡牌 ${cardId} 不存在`};
        }

        // 检查卡牌是否在玩家手牌中
        const playerHand = state.playerHands[player as keyof typeof state.playerHands];
        if (!playerHand || !playerHand.includes(cardId)) {
            return {success: false, error: `卡牌 ${cardId} 不在玩家 ${player} 的手牌中`};
        }

        // 检查是否有当前敌人
        if (!state.currentEnemy) {
            return {success: false, error: '没有活跃的敌人'};
        }

        // 计算伤害（基础伤害为卡牌面值）
        let damage = card.value;

        // TODO: 花色能力 - 梅花双倍伤害
        // if (card.suit === 'clubs') {
        //     damage *= 2;
        // }

        // TODO: A牌配合机制 - 如果card.rank === 'A'，可以额外打出一张牌

        // 对敌人造成伤害
        game.produce(state => {
            state.currentEnemy!.hp -= damage;

            // 从手牌移除卡牌
            const hand = state.playerHands[player as keyof typeof state.playerHands];
            const cardIndex = hand.indexOf(cardId);
            if (cardIndex !== -1) {
                hand.splice(cardIndex, 1);
            }

            // 将卡牌移到弃牌堆
            state.cards[cardId].regionId = 'discardPile';

            // TODO: 触发花色能力
            // TODO: 检查敌人是否被击败
        });

        return {success: true, result: {damage, enemyHp: state.currentEnemy.hp}};
    }
});

/**
 * 让过（不出牌）
 */
const passCmd = registry.register({
    schema: 'pass <player:string>',
    run: async (game, player) => {
        const state = game.value;

        // 即使让过，也会受到敌人反击
        // TODO: 实现反击逻辑

        return {success: true, result: {message: `${player} 让过`}};
    }
});

/**
 * 检查敌人是否被击败
 */
const checkEnemyDefeatedCmd = registry.register({
    schema: 'check-enemy-defeated',
    run: async (game) => {
        const state = game.value;

        if (!state.currentEnemy) {
            return {success: false, error: '没有活跃的敌人'};
        }

        const isDefeated = state.currentEnemy.hp <= 0;

        if (isDefeated) {
            // 敌人被击败，移到弃牌堆
            game.produce(state => {
                // TODO: 将当前敌人移到弃牌堆
                // TODO: 翻开下一个敌人
            });
        }

        return {success: true, result: {isDefeated, enemy: state.currentEnemy}};
    }
});

export {
    playCmd as play,
    passCmd as pass,
    checkEnemyDefeatedCmd as checkEnemyDefeated,
};