<?php

declare(strict_types=1);

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\SiteSetting;
use Illuminate\Contracts\View\View;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

class SiteSettingController extends Controller
{
    public function index(): View
    {
        $defaults = $this->defaultModules();
        $stored = SiteSetting::query()->where('setting_key', 'home_modules')->value('setting_value');

        $modules = $defaults;
        if (is_array($stored)) {
            $storedByKey = collect($stored)->keyBy('key');
            $modules = array_map(function (array $module) use ($storedByKey): array {
                $saved = $storedByKey->get($module['key']);
                if (is_array($saved)) {
                    $module['enabled'] = (bool) ($saved['enabled'] ?? true);
                    $module['limit'] = (int) ($saved['limit'] ?? $module['limit']);
                }

                return $module;
            }, $defaults);
        }

        return view('admin.settings.index', [
            'modules' => $modules,
        ]);
    }

    public function update(Request $request): RedirectResponse
    {
        $payload = [];
        foreach ($this->defaultModules() as $module) {
            $key = $module['key'];
            $payload[] = [
                'key' => $key,
                'label' => $module['label'],
                'enabled' => $request->boolean("modules.{$key}.enabled", true),
                'limit' => max(1, min(30, (int) $request->input("modules.{$key}.limit", $module['limit']))),
            ];
        }

        SiteSetting::query()->updateOrCreate(
            ['setting_key' => 'home_modules'],
            ['setting_value' => $payload],
        );

        return redirect()
            ->route('admin.settings.index')
            ->with('status', '首页模块配置已更新');
    }

    /**
     * @return array<int, array{key:string,label:string,enabled:bool,limit:int}>
     */
    private function defaultModules(): array
    {
        return [
            ['key' => 'hot_tools', 'label' => '热门工具', 'enabled' => true, 'limit' => 18],
            ['key' => 'latest_tools', 'label' => '最新收录', 'enabled' => true, 'limit' => 18],
            ['key' => 'category_sections', 'label' => '分类分块', 'enabled' => true, 'limit' => 18],
            ['key' => 'channel_cards', 'label' => '频道卡片区', 'enabled' => true, 'limit' => 1],
            ['key' => 'promo_banners', 'label' => '横幅推荐区', 'enabled' => true, 'limit' => 1],
        ];
    }
}