<?php

declare(strict_types=1);

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\PreregistrationPage;
use App\Services\WeeztixService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use RuntimeException;

class WeeztixApiController extends Controller
{
    public function coupons(Request $request): JsonResponse
    {
        $request->validate([
            'page_id' => ['required', 'integer', 'exists:preregistration_pages,id'],
        ]);

        $page = PreregistrationPage::query()->findOrFail($request->integer('page_id'));
        $this->authorize('update', $page);

        $config = $page->weeztixConfig;
        if ($config === null || ! $config->is_connected) {
            return response()->json([
                'message' => __('Niet verbonden met Weeztix.'),
            ], 422);
        }

        $companyGuid = $config->company_guid;
        if (! is_string($companyGuid) || $companyGuid === '') {
            return response()->json([
                'message' => __('Geen Weeztix-bedrijf gekoppeld. Verbind opnieuw met Weeztix.'),
            ], 422);
        }

        try {
            $raw = (new WeeztixService($config))->getCoupons();
            $coupons = $this->normalizeCouponsPayload($raw);

            return response()->json(['coupons' => $coupons]);
        } catch (RuntimeException) {
            return response()->json([
                'message' => __('Kon kortingsbonnen niet laden.'),
            ], 422);
        }
    }

    /**
     * @param  array<string, mixed>  $raw
     * @return list<array{guid: string, name: string}>
     */
    private function normalizeCouponsPayload(array $raw): array
    {
        $list = $raw;
        if (isset($raw['data']) && is_array($raw['data'])) {
            $list = $raw['data'];
        }

        if (! is_array($list)) {
            return [];
        }

        $out = [];
        foreach ($list as $row) {
            if (! is_array($row)) {
                continue;
            }
            if (! $this->couponRowHasEnabledStatus($row)) {
                continue;
            }
            $guid = data_get($row, 'guid') ?? data_get($row, 'id');
            if (! is_string($guid) || $guid === '') {
                continue;
            }
            $name = data_get($row, 'name') ?? data_get($row, 'title') ?? $guid;
            $out[] = [
                'guid' => $guid,
                'name' => is_string($name) ? $name : $guid,
            ];
        }

        return $out;
    }

    /**
     * Weeztix coupon list items expose a string status; only "enabled" should appear in the admin picker.
     *
     * @param  array<string, mixed>  $row
     */
    private function couponRowHasEnabledStatus(array $row): bool
    {
        $status = data_get($row, 'status');

        return is_string($status) && strcasecmp(trim($status), 'enabled') === 0;
    }
}