<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\WechatUser;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class WechatUserController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $pageSize = max(1, min(100, (int) $request->input('page_size', 20)));

        $query = WechatUser::query()->orderByDesc('id');

        if ($request->filled('keyword')) {
            $keyword = trim((string) $request->input('keyword'));
            $query->where(function ($q) use ($keyword) {
                $q->where('phone', 'like', "%{$keyword}%")
                    ->orWhere('nickname', 'like', "%{$keyword}%")
                    ->orWhere('real_name', 'like', "%{$keyword}%");
            });
        }

        $user = $request->user();
        if (! $user->isSuperAdmin()) {
            $venueIds = $user->venues()->pluck('venues.id')->all();
            if (empty($venueIds)) {
                $query->whereRaw('1 = 0');
            } else {
                // 活动预约可能仅填手机号、wechat_user_id 为空；通过后一条件，在「个人中心」已绑定手机号的用户仍可按手机号检索到
                $query->where(function ($outer) use ($venueIds) {
                    $outer->whereExists(function ($sub) use ($venueIds) {
                        $sub->selectRaw('1')
                            ->from('reservations')
                            ->whereNull('reservations.deleted_at')
                            ->whereColumn('reservations.wechat_user_id', 'wechat_users.id')
                            ->whereIn('reservations.venue_id', $venueIds);
                    })->orWhereExists(function ($sub) use ($venueIds) {
                        $sub->selectRaw('1')
                            ->from('reservations')
                            ->whereNull('reservations.deleted_at')
                            ->whereIn('reservations.venue_id', $venueIds)
                            ->whereNotNull('reservations.visitor_phone')
                            ->whereNotNull('wechat_users.phone')
                            ->whereColumn('reservations.visitor_phone', 'wechat_users.phone');
                    });
                });
            }
        }

        return response()->json($query->paginate($pageSize));
    }
}