<?php

/**
 * 文件功能：商店控制器
 * 提供商品列表查询、商品购买（含赠送特效广播）、改名卡使用 三个接口
 */

namespace App\Http\Controllers;

use App\Events\EffectBroadcast;
use App\Events\MessageSent;
use App\Models\ShopItem;
use App\Services\ShopService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class ShopController extends Controller
{
    /**
     * 注入商店服务
     */
    public function __construct(
        private readonly ShopService $shopService,
    ) {}

    /**
     * 获取商店商品列表及当前用户状态
     *
     * 返回字段：items（商品列表）、user_jjb（当前金币）、
     *           active_week_effect（当前周卡）、has_rename_card（是否持有改名卡）
     */
    public function items(): JsonResponse
    {
        $user = Auth::user();
        $items = ShopItem::active()->map(fn ($item) => [
            'id' => $item->id,
            'name' => $item->name,
            'slug' => $item->slug,
            'description' => $item->description,
            'icon' => $item->icon,
            'price' => $item->price,
            'type' => $item->type,
            'duration_days' => $item->duration_days,
        ]);

        return response()->json([
            'items' => $items,
            'user_jjb' => $user->jjb ?? 0,
            'active_week_effect' => $this->shopService->getActiveWeekEffect($user),
            'has_rename_card' => $this->shopService->hasRenameCard($user),
        ]);
    }

    /**
     * 购买商品
     *
     * 单次特效卡额外支持：
     *   - recipient  接收者用户名（传 "all" 或留空则全员可见）
     *   - message    公屏赠言（可选）
     *
     * @param  Request  $request  含 item_id, recipient?, message?
     */
    public function buy(Request $request): JsonResponse
    {
        $request->validate(['item_id' => 'required|integer|exists:shop_items,id']);

        $item = ShopItem::find($request->item_id);
        if (! $item->is_active) {
            return response()->json(['status' => 'error', 'message' => '该商品已下架。'], 400);
        }

        $result = $this->shopService->buyItem(Auth::user(), $item);

        if (! $result['ok']) {
            return response()->json(['status' => 'error', 'message' => $result['message']], 400);
        }

        $response = ['status' => 'success', 'message' => $result['message']];

        // ── 单次特效卡：广播给指定用户或全员 ────────────────────────
        if (isset($result['play_effect'])) {
            $user = Auth::user();
            $roomId = (int) $request->room_id;
            $recipient = trim($request->input('recipient', ''));     // 空字符串 = 全员
            $message = trim($request->input('message', ''));

            // recipient 为空或 "all" 表示全员
            $targetUsername = ($recipient === '' || $recipient === 'all') ? null : $recipient;

            // 广播特效事件（全员频道）
            broadcast(new EffectBroadcast(
                roomId: $roomId,
                type: $result['play_effect'],
                operator: $user->username,
                targetUsername: $targetUsername,
                giftMessage: $message ?: null,
            ))->toOthers();

            // 同时前端也需要播放（自己也要看到）
            $response['play_effect'] = $result['play_effect'];
            $response['target_username'] = $targetUsername;
            $response['gift_message'] = $message ?: null;

            // 公屏系统消息
            if ($roomId > 0) {
                $icons = [
                    'fireworks' => '🎆',
                    'rain' => '🌧',
                    'lightning' => '⚡',
                    'snow' => '❄️',
                ];
                // 赠礼消息文案（改成“为XX触发了一场特效”）
                $icon = $icons[$result['play_effect']] ?? '✨';
                $toStr = $targetUsername ? "【{$targetUsername}】" : '全体聊友';
                $remarkPart = $message ? " 「{$message}」" : '';
                $sysContent = "{$icon} {$user->username} 为 {$toStr} 燃放了一场【{$item->name}】特效！{$remarkPart}";

                // 广播系统消息到公屏（字段名与前端 appendMessage() 保持一致）
                $sysMsgEvent = new MessageSent(
                    roomId: $roomId,
                    message: [
                        'id' => 0,
                        'room_id' => $roomId,
                        'from_user' => '系统传音',   // 触发金色左边框样式（已有处理分支）
                        'to_user' => '大家',
                        'content' => $sysContent,
                        'font_color' => '#cc6600',
                        'sent_at' => now()->format('H:i:s'),
                        'is_secret' => false,
                        'action' => null,
                    ]
                );
                broadcast($sysMsgEvent);
            }
        }

        // 返回最新金币余额
        $response['jjb'] = Auth::user()->fresh()->jjb;

        return response()->json($response);
    }

    /**
     * 使用改名卡修改昵称
     *
     * @param  Request  $request  含 new_name
     */
    public function rename(Request $request): JsonResponse
    {
        $request->validate([
            'new_name' => 'required|string|min:1|max:10',
        ]);

        $result = $this->shopService->useRenameCard(Auth::user(), $request->new_name);

        if (! $result['ok']) {
            return response()->json(['status' => 'error', 'message' => $result['message']], 400);
        }

        return response()->json(['status' => 'success', 'message' => $result['message']]);
    }
}