<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Concerns\ResolvesPlatformAdminContext;
use App\Http\Controllers\Controller;
use App\Models\Admin;
use App\Models\Order;
use App\Models\Product;
use App\Models\Merchant;
use App\Models\Plan;
use App\Models\PlatformOrder;
use App\Models\User;
use App\Support\CacheKeys;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Cache;
use Illuminate\View\View;

class DashboardController extends Controller
{
    use ResolvesPlatformAdminContext;

    public function index(Request $request): View
    {
        $admin = $this->ensurePlatformAdmin($request);

        $stats = Cache::remember(
            CacheKeys::platformDashboardStats(),
            now()->addMinutes(10),
            fn () => [
                'merchants' => Merchant::count(),
                'admins' => Admin::count(),
                'users' => User::count(),
                'products' => Product::count(),
                'orders' => Order::count(),

                // 收费中心（平台侧）
                'platform_orders' => PlatformOrder::count(),
                'platform_orders_unpaid_pending' => PlatformOrder::query()
                    ->where('payment_status', 'unpaid')
                    ->where('status', 'pending')
                    ->count(),
                'platform_orders_paid_pending' => PlatformOrder::query()
                    ->where('payment_status', 'paid')
                    ->where('status', 'pending')
                    ->count(),
                // 同步失败：沿用平台订单列表口径（meta.subscription_activation_error.message 存在即失败）
                'platform_orders_sync_failed' => PlatformOrder::query()
                    ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NOT NULL")
                    ->count(),

                // 站点治理
                'active_merchants' => Merchant::query()->where('status', 'active')->count(),
                'pending_orders' => Order::query()->where('status', 'pending')->count(),
            ]
        );

        $recentPlatformOrders = PlatformOrder::query()
            ->orderByDesc('id')
            ->limit(5)
            ->get();

        // 占比卡（最小可用）：按套餐统计平台订单数量 TopN
        $planOrderShare = PlatformOrder::query()
            ->selectRaw('plan_id, COUNT(*) as cnt')
            ->whereNotNull('plan_id')
            ->groupBy('plan_id')
            ->orderByDesc('cnt')
            ->limit(5)
            ->get()
            ->map(function ($row) {
                return [
                    'plan_id' => (int) $row->plan_id,
                    'count' => (int) $row->cnt,
                ];
            })
            ->values()
            ->all();

        $planIdToName = Plan::query()->pluck('name', 'id')->all();

        return view('admin.dashboard', [
            'adminName' => $admin->name,
            'stats' => $stats,
            'recentPlatformOrders' => $recentPlatformOrders,
            'planOrderShare' => $planOrderShare,
            'planIdToName' => $planIdToName,
            'platformAdmin' => $admin,
            'cacheMeta' => [
                'store' => config('cache.default'),
                'ttl' => '10m',
            ],
            'platformOverview' => [
                'system_role' => '总台管理',
                'current_scope' => '总台运营方视角',
                'merchant_mode' => '统一管理多个站点',
                'channel_count' => 5,
                'active_merchants' => $stats['active_merchants'],
                'pending_orders' => $stats['pending_orders'],
            ],
        ]);
    }
}