<?php

namespace App\Http\Requests\Admin;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Validator;
use ZipArchive;

class PublishZipVersionRequest extends FormRequest
{
    public function authorize(): bool
    {
        return true;
    }

    protected function prepareForValidation(): void
    {
        $extensions = $this->input('php_extensions');

        if (is_string($extensions)) {
            $this->merge([
                'php_extensions' => collect(preg_split('/[,，\s]+/u', $extensions))
                    ->map(fn ($item) => trim((string) $item))
                    ->filter()
                    ->values()
                    ->all(),
            ]);
        }
    }

    public function rules(): array
    {
        return [
            'package_file' => ['required', 'file', 'mimes:zip', 'max:51200'],
            'version' => ['nullable', 'string', 'max:32', 'regex:/^[0-9]+\.[0-9]+\.[0-9]+(?:-[0-9A-Za-z.-]+)?$/'],
            'typecho_min' => ['nullable', 'string', 'max:16'],
            'typecho_max' => ['nullable', 'string', 'max:16'],
            'php_min' => ['nullable', 'string', 'max:16'],
            'php_max' => ['nullable', 'string', 'max:16'],
            'php_extensions' => ['nullable', 'array'],
            'php_extensions.*' => ['string', 'max:32'],
            'is_stable' => ['nullable', 'boolean'],
            'mark_as_latest' => ['nullable', 'boolean'],
            'changelog' => ['nullable', 'string'],
            'published_at' => ['nullable', 'date'],
        ];
    }

    public function withValidator(Validator $validator): void
    {
        $validator->after(function (Validator $validator) {
            $file = $this->file('package_file');

            if (!$file || !$file->isValid() || $this->zipHasManifestAtRoot($file->getRealPath())) {
                return;
            }

            if (blank((string) $this->input('version', ''))) {
                $validator->errors()->add('version', 'zip 根目录没有 manifest.json 时，必须手动填写版本号。');
            }
        });
    }

    private function zipHasManifestAtRoot(string $path): bool
    {
        $zip = new ZipArchive();

        if ($zip->open($path) !== true) {
            return false;
        }

        try {
            for ($i = 0; $i < $zip->numFiles; $i++) {
                $stat = $zip->statIndex($i);
                $name = trim((string) ($stat['name'] ?? ''), '/');

                if ($name === 'manifest.json') {
                    return true;
                }
            }

            return false;
        } finally {
            $zip->close();
        }
    }
}