<?php

namespace App\Traits\Requests;

use Illuminate\Http\UploadedFile;

trait HasInertiaPicture
{
    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    protected function mergeInertiaPicture(): void
    {
        if (empty($this->convertedFiles)) {
            return;
        }
        $original = $this->all();
        $merged   = self::arrayMergeRecursiveDistinct($original, $this->convertedFiles);
        $this->replace($merged);
    }

    /**
     * Merge recursive data.
     *
     * @param array $array1
     * @param array $array2
     * @return array
     */
    protected static function arrayMergeRecursiveDistinct(array $array1, array $array2): array
    {
        $merged = $array1;

        foreach ($array2 as $key => $value) {
            if (isset($merged[$key]) && is_array($merged[$key]) && is_array($value)) {
                $merged[$key] = self::arrayMergeRecursiveDistinct($merged[$key], $value);
            } else {
                $merged[$key] = $value;
            }
        }

        return $merged;
    }

    /**
     * Set picture rules (UploadedFile or string path).
     *
     * @param string $rules
     * @return array<mixed>
     */
    protected function pictureRules(string $rules): array
    {
        $rules = explode("|", $rules);
        return [
            function ($attribute, $value, $fail) use ($rules) {
                $isRequired = in_array('required', $rules);
                $isNullable = in_array('nullable', $rules);

                // Check required value.
                if ($isRequired && $value === null) {
                    $label = $this->attributes()[$attribute] ?? $attribute;
                    $fail(trans('validation.required', ['attribute' => $label]));
                    return;
                }
                // Authorized nullable value.
                if ($isNullable && $value === null) {
                    return;
                }

                // UploadedFile validations.
                if ($value instanceof UploadedFile) {
                    // Filter unused rules for validator.
                    // The “required” and “nullable” rules are not the same as those for online validation.
                    $validatorRules = array_filter($rules, fn($r) => $r !== 'required' && $r !== 'nullable');

                    $validator = \Validator::make(
                        [$attribute => $value],
                        [$attribute => implode('|', $validatorRules)]
                    );

                    if ($validator->fails()) {
                        $fail($validator->errors()->first($attribute));
                    }

                    return;
                }

                // String path validations.
                if (is_string($value)) {
                    // Validate the path.
                     // phpcs:ignore Generic.Files.LineLength
                    $pattern = '/^storage\/modelfiles\/[a-zA-Z0-9_]+\/[0-9]{2}\/[0-9]{2}\/[0-9]{2}\/[a-zA-Z0-9]{2}\/[a-zA-Z0-9_-]+/';
                    if (!preg_match($pattern, $value)) {
                        $fail(trans('validation.file_path', ['attribute' => $this->attributes()[$attribute]]));
                        return;
                    }

                    // Validate the extension.
                    $mimesRule = collect($rules)->first(fn($r) => str_starts_with($r, 'mimes:'));
                    if ($mimesRule) {
                        $allowedExtensions = explode(',', str_replace('mimes:', '', $mimesRule));
                        $ext               = strtolower(pathinfo($value, PATHINFO_EXTENSION));
                        if (!in_array($ext, $allowedExtensions)) {
                            $fail(trans('validation.mimetypes', [
                                'attribute' => $this->attributes()[$attribute],
                                'values'    => implode(', ', $allowedExtensions),
                            ]));
                        }
                    }

                    return;
                } //end if

                // Unmanaged case (not null, not UploadedFile, not string).
                $fail("Invalide type for $attribute.");
            }
        ];
    }
}