<?php

namespace App\Http\Controllers;

use App\Models\Podcast\ImportedPodcast;
use App\Models\Podcast\Podcast;
use App\Models\Podcast\PodcastEpisode;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;

class PodcastController extends Controller
{
    public function index(Request $request) {
        if (!isset($request->per_page) || is_null($request)) {
            $pagination = 5;
        } else {
            $pagination = $request->per_page;
        }
        return Podcast::searchFilter($request)
            ->where('id', '!=', 1)
            ->with(['episodes', 'imported', 'owner'])
            ->paginate($pagination)
            ->toJson();
    }

    public function store(Request $request) {
        return $this->save($request);
    }

    /**
     * Method used to update a smart block
     * @param Request $request
     * @param $id
     * @return mixed
     */
    public function update(Request $request) {
        return $this->save($request);
    }

    public function destroy($id) {
        try {
            PodcastEpisode::where('podcast_id', $id)->delete();
            ImportedPodcast::where('podcast_id', $id)->delete();
            Podcast::destroy($id);
            return true;
        } catch(\Exception $e) {
            return response()->json(['message' => $e->getMessage()], 500);
        }
    }

    public function show(Request $request, $id) {
        $xml = simplexml_load_file($request->url);
        return $xml->channel;
    }

    public function loadPodcastDataFromXml(Request $request) {

        try {
            $xml = simplexml_load_file($request->url, null, LIBXML_NOCDATA);
            $xmlArray = (array) $xml->channel;

            $newArray = [];

            foreach ($xmlArray['item'] as $key => $item) {
                $item = (array) $item;
                $newArray[$key] = $item;
                $downloading = PodcastEpisode::where('episode_guid','=',$item['guid'])->first();
                if (!is_null($downloading)) {
                    $newArray[$key]['imported'] = $downloading->third_party_track_reference->celery_task->status;
                } else {
                    $newArray[$key]['imported'] = 0;
                }
            }
        } catch (\Exception $e) {
            $xmlArray = $newArray = false;
        }

        return json_encode([
            'podcast' => $xmlArray,
            'episodes' => $newArray
            ]);
    }

    protected function save(Request $request)
    {
        $user = Auth::user();
        $xml = simplexml_load_file($request->url);
        $itunes = $xml->channel->children('itunes', TRUE);

        try {
            $dbPodcast = Podcast::firstOrNew(['id' => $request->id]);
            DB::beginTransaction();
            $dbPodcast->fill([
                'url' => $request->url,
                'title' => $request->title,
                'creator' => $itunes->author,
                'description' => $itunes->subtitle,
                'language' => $xml->channel->language,
                'copyright' => $xml->channel->copyright,
                'link' => $xml->channel->link,
                'itunes_author'=> $itunes->author,
                'itunes_keywords' => '',
                'itunes_summary' => $itunes->summary,
                'itunes_subtitle' => $itunes->subtitle,
                'itunes_category' => '',
                'itunes_explicit' => $itunes->explicit,
                'owner' => $user->id,
            ])->save();

            $dbImportedPodcast = ImportedPodcast::firstOrNew(['podcast_id' => $dbPodcast->id]);;
            $dbImportedPodcast->fill([
                'auto_ingest' => !isset($request->auto_ingest) ? true : false,
                'podcast_id' => $dbPodcast->id
            ])->save();

            DB::commit();

            return response()->json([
                'podcast' => $dbPodcast,
                'episodes' => $xml->channel->children('item', TRUE)
            ]);
        } catch (\Exception $e) {
            return response()->json(['message' => $e->getMessage()], 500);
        }
    }
}