<?php

namespace Zoomyboy\MedialibraryHelper;

use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;
use Illuminate\Validation\Rule;
use Illuminate\Validation\ValidationException;
use Spatie\MediaLibrary\HasMedia;
use Spatie\MediaLibrary\MediaCollections\MediaCollection;
use Spatie\MediaLibrary\MediaCollections\Models\Media;

class MediaController
{
    use AuthorizesRequests;

    public function store(Request $request)
    {
        $request->validate([
            'name' => 'string',
            'model' => ['required', 'string', Rule::in(app('media-library-helpers')->keys())],
        ]);

        $model = $this->validateModel($request);
        $this->authorize('storeMedia', $model);
        $collection = $model->getMediaCollection($request->input('collection'));
        $isSingle = 1 === $collection->collectionSizeLimit;

        $request->validate($isSingle ? [
            'payload' => 'array',
            'payload.*' => '',
            'payload.name' => 'required|string|max:255',
            'payload.content' => 'required|string',
        ] : [
            'payload' => 'required|array|min:1',
            'payload.*' => 'array',
            'payload.*.name' => 'string',
            'payload.*.content' => 'string',
        ]);

        $content = $isSingle ? [$request->input('payload')] : $request->input('payload');

        $medias = collect($content)->map(function ($c) use ($collection, $model) {
            $pathinfo = pathinfo($c['name']);
            $path = $collection->runCallback('forceFileName', $pathinfo['filename']).'.'.$pathinfo['extension'];
            Storage::disk('public')->put($path, base64_decode($c['content']));
            $adder = $model
                ->addMedia(Storage::disk('public')->path($path))
                ->withCustomProperties($collection->runCallback('withDefaultProperties', $path));

            return tap(
                $collection->runCallback('storing', $adder, $path)->toMediaCollection($collection->name),
                fn ($media) => $collection->runCallback('stored', $media)
            );
        });

        return $isSingle ? MediaData::from($medias->first()) : MediaData::collection($medias);
    }

    public function update(Request $request, Media $media): MediaData
    {
        $rules = collect($media->model->getMediaCollection($media->collection_name)->runCallback('withPropertyValidation', $media->file_name))
            ->mapWithKeys(fn ($rule, $key) => ["properties.{$key}" => $rule])->toArray();

        $request->validate($rules);

        $media->update(['custom_properties' => $request->properties]);

        return MediaData::from($media);
    }

    public function index(Request $request, $parentModel, int $parentId, string $collection): JsonResponse
    {
        $model = app('media-library-helpers')->get($parentModel);
        $model = $model::find($parentId);
        $isSingle = $model->getMediaCollection($collection)->collectionSizeLimit;

        return response()->json([
            'data' => $isSingle ? $model->getFirstMedia($collection) : $model->getMedia($collection)->map(fn ($c) => $c->toArray()),
        ]);
    }

    public function destroy(Media $media, Request $request): JsonResponse
    {
        $this->authorize('destroyMedia', $media->model);
        $media->delete();

        return response()->json([]);
    }

    protected function hasCallback(MediaCollection $collection, string $callback): bool
    {
        return property_exists($collection, $callback);
    }

    protected function validateModel(Request $request): HasMedia
    {
        $model = app('media-library-helpers')->get($request->input('model'));

        $request->validate([
            'collection' => [
                'required',
                'string',
                Rule::in((new $model())->getRegisteredMediaCollections()->pluck('name')),
            ],
        ]);

        $model = $model::find($request->input('id'));
        if (!$model) {
            throw ValidationException::withMessages(['model' => 'nicht gefunden']);
        }

        return $model;
    }
}