<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Services\Course\RemoteCourseAssetImporter;
use App\Services\Sstbc\SstbcApiClient;
use App\Support\ApiResponse;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use RuntimeException;
use Throwable;

class SstbcCourseController extends Controller
{
    use ApiResponse;

    public function __construct(
        protected SstbcApiClient $client,
        protected RemoteCourseAssetImporter $assetImporter,
    ) {}

    public function index(Request $request): JsonResponse
    {
        $data = $request->validate([
            'page' => ['nullable', 'integer', 'min:1'],
            'page_size' => ['nullable', 'integer', 'min:1', 'max:100'],
            'keyword' => ['nullable', 'string', 'max:128'],
        ]);

        $params = [
            'page' => (int) ($data['page'] ?? 1),
            'page_size' => (int) ($data['page_size'] ?? 10),
            'sort_name' => 'start_date',
            'sort_type' => 'DESC',
            'show_relation' => ['type_detail'],
            'filter' => [[
                'key' => 'is_fee',
                'op' => 'eq',
                'value' => 0,
            ]],
        ];

        if (! empty($data['keyword'])) {
            $params['filter'][] = [
                'key' => 'name',
                'op' => 'like',
                'value' => $data['keyword'],
            ];
        }

        try {
            $remote = $this->client->fetchCourses($params);
        } catch (Throwable $e) {
            return $this->fail($e->getMessage(), 502);
        }

        return $this->ok([
            'items' => $remote['data'] ?? [],
            'meta' => [
                'current_page' => (int) ($remote['current_page'] ?? 1),
                'per_page' => (int) ($remote['per_page'] ?? $params['page_size']),
                'total' => (int) ($remote['total'] ?? 0),
                'last_page' => (int) ($remote['last_page'] ?? 1),
            ],
        ]);
    }

    public function importPromo(Request $request): JsonResponse
    {
        $data = $request->validate([
            'url' => ['required', 'string', 'url', 'max:512'],
        ]);

        $url = $data['url'];
        $allowedHost = parse_url((string) config('sstbc.base_url'), PHP_URL_HOST);
        $urlHost = parse_url($url, PHP_URL_HOST);

        if (! $allowedHost || $urlHost !== $allowedHost) {
            return $this->fail('仅允许导入商学院域名下的宣传页图片', 422);
        }

        try {
            $media = $this->assetImporter->importFromUrl(
                $url,
                'promos',
                (string) config('sstbc.base_url'),
            );
        } catch (RuntimeException $e) {
            return $this->fail($e->getMessage(), 502);
        }

        return $this->ok($media->toApiArray(), '宣传页已导入');
    }
}