/**
 * @file ItemListComp.ts
 * @description 商店列表项组件（UI 视图层 + 购买逻辑）
 *
 * 职责：
 *   1. 渲染单个商品/装备卡的显示信息（名称、等级、属性词条、图标）。
 *   2. 处理购买点击 → 扣费 → 根据卡牌类型派发对应事件触发购买效果。
 *
 * 支持类型：
 *   - 装备卡（trigger_type=Field）→ 派发 UseEquipCard，由 MissEquipComp 处理。
 *   - 商品/药品卡（kind=Potion）→ 派发 UseItemCard，由 MissSkillsComp 处理（一次性 buff）。
 *
 * 设计说明：
 *   本组件同时服务于装备商店和商品商店，通过 cardData 的 trigger_type / kind 自动判断类型。
 */
import { mLogger } from "../common/Logger";
import { _decorator, Node, Sprite, Label, NodeEventType } from "cc";
import { ecs } from "../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
import { CCComp } from "../../../../extensions/oops-plugin-framework/assets/module/common/CCComp";
import { CardConfig, CardTriggerType, CKind } from "../common/config/CardSet";
import { EquipPoolList } from "../common/config/EquipSet";
import { FieldSkillSet, SkillSet } from "../common/config/SkillSet";
import { oops } from "db://oops-framework/core/Oops";
import { GameEvent } from "../common/config/GameEvent";
import { smc } from "../common/SingletonModuleComp";
import { MissionEconomy } from "./MissionEconomy";

const { ccclass, property } = _decorator;

/**
 * ItemListComp —— 商店列表项（装备/商品通用）
 *
 * 由 MissionCardComp.populateEquipments() / populateShopItems() 实例化。
 * 以图标 + 名称 + 描述/属性词条 + 购买按钮的形式呈现。
 */
@ccclass('ItemListComp')
@ecs.register('ItemListComp', false)
export class ItemListComp extends CCComp {
    private debugMode: boolean = false;

    // ======================== 编辑器绑定节点 ========================

    /** 商品图标节点 */
    @property({ type: Node })
    private icon_node: Node = null;

    /** 背景节点 */
    @property({ type: Node })
    private bg_node: Node = null;

    /** 商品名称 */
    @property(Label)
    private name_label: Label = null;

    /** 描述/属性词条 1 */
    @property(Label)
    private fied1: Label = null;
    /** 描述/属性词条 2 */
    @property(Label)
    private fied2: Label = null;
    /** 描述/属性词条 3 */
    @property(Label)
    private fied3: Label = null;

    /** 等级标签 */
    @property(Label)
    private level_label: Label = null;

    /** 购买按钮节点 */
    @property({ type: Node })
    private buy_node: Node = null;

    // ======================== 运行时状态 ========================

    /** 当前商品的卡牌配置 */
    private cardData: CardConfig | null = null;
    /** 是否已购买 */
    private isPurchased: boolean = false;

    // ======================== 生命周期 ========================

    onLoad() {
        this.buy_node?.on(NodeEventType.TOUCH_END, this.onBuyClick, this);
    }

    onDestroy() {
        super.onDestroy();
        if (this.buy_node && this.buy_node.isValid) {
            this.buy_node.off(NodeEventType.TOUCH_END, this.onBuyClick, this);
        }
    }

    // ======================== 数据初始化 ========================

    /**
     * 初始化商品卡数据并渲染 UI
     *
     * @param data 商品/装备卡配置
     */
    applyCardData(data: CardConfig): void {
        if (!data) return;
        this.cardData = data;
        this.isPurchased = false;
        this.updateUI();
    }

    // ======================== UI 渲染 ========================

    updateUI() {
        if (!this.cardData) return;

        const isEquip = this.cardData.trigger_type === CardTriggerType.Field;
        const isPotion = this.cardData.kind === CKind.Potion;

        // 名称：装备从 EquipPoolList 查找，商品直接用 cardData.name
        if (this.name_label) {
            if (isEquip) {
                const equipConfig = EquipPoolList.find(c => c.uuid === this.cardData!.uuid);
                this.name_label.string = equipConfig?.name || this.cardData.name || "";
            } else {
                this.name_label.string = this.cardData.name || "";
            }
        }

        // 等级标签（★ 表示卡牌等级）
        if (this.level_label) {
            const lv = this.cardData.card_lv ?? 1;
            this.level_label.string = lv >= 2 ? "★".repeat(lv - 1) : "";
        }

        // 描述/属性词条（最多显示 3 条）
        const fieldLabels = [this.fied1, this.fied2, this.fied3];
        if (isEquip) {
            // 装备：显示 field 词条
            const fields = this.cardData.field || [];
            for (let i = 0; i < fieldLabels.length; i++) {
                if (!fieldLabels[i]) continue;
                if (i < fields.length) {
                    const fieldConfig = FieldSkillSet[fields[i]];
                    fieldLabels[i].string = fieldConfig?.info || "";
                    fieldLabels[i].node.active = true;
                } else {
                    fieldLabels[i].string = "";
                    fieldLabels[i].node.active = false;
                }
            }
        } else if (isPotion) {
            // 商品：显示技能描述 + info
            const skillConfig = this.cardData.skill ? SkillSet[this.cardData.skill] : null;
            const skillInfo = skillConfig?.info || "";
            const cardInfo = this.cardData.info || "";

            if (fieldLabels[0]) {
                fieldLabels[0].string = cardInfo;
                fieldLabels[0].node.active = !!cardInfo;
            }
            if (fieldLabels[1]) {
                fieldLabels[1].string = skillInfo;
                fieldLabels[1].node.active = !!skillInfo && skillInfo !== cardInfo;
            }
            if (fieldLabels[2]) {
                fieldLabels[2].string = "";
                fieldLabels[2].node.active = false;
            }
        } else {
            // 其他类型：显示 info
            for (let i = 0; i < fieldLabels.length; i++) {
                if (!fieldLabels[i]) continue;
                fieldLabels[i].string = i === 0 ? (this.cardData.info || "") : "";
                fieldLabels[i].node.active = i === 0 && !!this.cardData.info;
            }
        }

        // 图标：装备取第一个 field 词条图标，商品取技能图标
        if (this.icon_node) {
            let iconId = "";
            if (isEquip) {
                const fields = this.cardData.field || [];
                if (fields.length > 0) {
                    iconId = FieldSkillSet[fields[0]]?.icon || "";
                }
            } else if (isPotion && this.cardData.skill) {
                iconId = SkillSet[this.cardData.skill]?.icon || "";
            }
            if (iconId) {
                this.updateIcon(this.icon_node, iconId);
            }
        }

        // 购买按钮费用显示
        if (this.buy_node) {
            this.buy_node.active = true;
            const costLabel = this.buy_node.getChildByName("num")?.getComponent(Label)
                || this.buy_node.getComponentInChildren(Label);
            if (costLabel) {
                costLabel.string = `${this.cardData.cost ?? 0}`;
            }
        }
    }

    /** 更新图标精灵 */
    private updateIcon(node: Node, iconId: string) {
        if (!node || !iconId) return;
        const sprite = node.getComponent(Sprite) || node.getComponentInChildren(Sprite);
        if (!sprite) return;
        if (smc.uiconsAtlas) {
            const frame = smc.uiconsAtlas.getSpriteFrame(iconId);
            sprite.spriteFrame = frame || null;
        }
    }

    // ======================== 购买逻辑 ========================

    /**
     * 购买点击处理：
     *   1. 扣除金币（失败则提示并中止）。
     *   2. 根据卡牌类型派发对应事件：
     *      - 装备卡（trigger_type=Field）→ UseEquipCard → MissEquipComp
     *      - 商品/药品卡（kind=Potion）→ UseItemCard → MissSkillsComp（一次性 buff 技能）
     *   3. 标记已购买，隐藏购买按钮。
     */
    private onBuyClick() {
        if (!this.cardData || this.isPurchased) return;

        oops.audio.playEffect("music/button");

        // 扣费
        const cost = this.cardData.cost ?? 0;
        const success = MissionEconomy.spendCoin(cost);
        if (!success) {
            oops.message.dispatchEvent(GameEvent.ShowSmallTip, "buy_coin");
            mLogger.log(this.debugMode, "ItemListComp", "purchase failed: not enough coin", {
                uuid: this.cardData.uuid,
                cost
            });
            return;
        }

        // 根据类型派发对应事件
        const isEquip = this.cardData.trigger_type === CardTriggerType.Field;
        const isPotion = this.cardData.kind === CKind.Potion;

        if (isEquip) {
            // 装备：被动驻场，由 MissEquipComp 处理
            oops.message.dispatchEvent(GameEvent.UseEquipCard, this.cardData);
            mLogger.log(this.debugMode, "ItemListComp", "equipment purchased", {
                uuid: this.cardData.uuid,
                cost
            });
        } else if (isPotion) {
            // 商品/药品：一次性 buff 技能，由 MissSkillsComp 处理
            oops.message.dispatchEvent(GameEvent.UseItemCard, this.cardData);
            mLogger.log(this.debugMode, "ItemListComp", "item purchased", {
                uuid: this.cardData.uuid,
                skill: this.cardData.skill,
                cost
            });
        } else {
            // 默认走技能卡流程
            oops.message.dispatchEvent(GameEvent.UseSkillCard, this.cardData);
            mLogger.log(this.debugMode, "ItemListComp", "card purchased", {
                uuid: this.cardData.uuid,
                cost
            });
        }

        // 标记已购买
        this.isPurchased = true;
        if (this.buy_node) {
            this.buy_node.active = false;
        }
    }

    /** 标记为已购买状态（用于跨波次保持购买记录） */
    setPurchased(): void {
        this.isPurchased = true;
        if (this.buy_node) {
            this.buy_node.active = false;
        }
    }

    /** ECS 组件移除时销毁节点 */
    reset() {
        if (this.node && this.node.isValid) {
            this.node.destroy();
        }
    }
}