<?php

namespace App\Http\Controllers\Api;

use Illuminate\Http\Request;
use App\Http\Controllers\{
    Controller,
    AvatarController
};
use Auth, Cache, Storage, URL;
use Carbon\Carbon;
use App\{
    Avatar,
    Notification,
    Media,
    Profile,
    Status
};
use App\Transformer\Api\{
    AccountTransformer,
    NotificationTransformer,
    MediaTransformer,
    StatusTransformer
};
use League\Fractal;
use League\Fractal\Serializer\ArraySerializer;
use League\Fractal\Pagination\IlluminatePaginatorAdapter;
use App\Jobs\AvatarPipeline\AvatarOptimize;
use App\Jobs\ImageOptimizePipeline\ImageOptimize;
use App\Jobs\VideoPipeline\{
    VideoOptimize,
    VideoPostProcess,
    VideoThumbnail
};
use App\Services\NotificationService;

class BaseApiController extends Controller
{
    protected $fractal;

    public function __construct()
    {
        $this->middleware('auth');
        $this->fractal = new Fractal\Manager();
        $this->fractal->setSerializer(new ArraySerializer());
    }

    public function notifications(Request $request)
    {
        $pid = Auth::user()->profile->id;
        $pg = $request->input('pg');
        if($pg == true) {
            $timeago = Carbon::now()->subMonths(6);
            $notifications = Notification::whereProfileId($pid)
                ->whereDate('created_at', '>', $timeago)
                ->latest()
                ->simplePaginate(10);
            $resource = new Fractal\Resource\Collection($notifications, new NotificationTransformer());
            $res = $this->fractal->createData($resource)->toArray();
        } else {
            $this->validate($request, [
                'page' => 'nullable|integer|min:1',
                'limit' => 'nullable|integer|min:1|max:10'
            ]);
            $limit = $request->input('limit') ?? 10;
            $page = $request->input('page') ?? 1;
            if($page > 3) {
                return response()->json([]);
            }
            $end = (int) $page * $limit;
            $start = (int) $end - $limit;
            $res = NotificationService::get($pid, $start, $end);
        }

        return response()->json($res);
    }

    public function accounts(Request $request, $id)
    {
        $profile = Profile::findOrFail($id);
        $resource = new Fractal\Resource\Item($profile, new AccountTransformer());
        $res = $this->fractal->createData($resource)->toArray();

        return response()->json($res);
    }

    public function accountFollowers(Request $request, $id)
    {
        $profile = Profile::findOrFail($id);
        $followers = $profile->followers;
        $resource = new Fractal\Resource\Collection($followers, new AccountTransformer());
        $res = $this->fractal->createData($resource)->toArray();

        return response()->json($res);
    }

    public function accountFollowing(Request $request, $id)
    {
        $profile = Profile::findOrFail($id);
        $following = $profile->following;
        $resource = new Fractal\Resource\Collection($following, new AccountTransformer());
        $res = $this->fractal->createData($resource)->toArray();

        return response()->json($res);
    }

    public function accountStatuses(Request $request, $id)
    {
        $this->validate($request, [
            'only_media' => 'nullable',
            'pinned' => 'nullable',
            'exclude_replies' => 'nullable',
            'max_id' => 'nullable|integer|min:1',
            'since_id' => 'nullable|integer|min:1',
            'min_id' => 'nullable|integer|min:1',
            'limit' => 'nullable|integer|min:1|max:24'
        ]);
        $limit = $request->limit ?? 20;
        $max_id = $request->max_id ?? false;
        $min_id = $request->min_id ?? false;
        $since_id = $request->since_id ?? false;
        $only_media = $request->only_media ?? false;
        $user = Auth::user();
        $account = Profile::findOrFail($id);
        $statuses = $account->statuses()->getQuery(); 
        if($only_media == true) {
            $statuses = $statuses
                ->whereHas('media')
                ->whereNull('in_reply_to_id')
                ->whereNull('reblog_of_id');
        }
        if($id == $account->id && !$max_id && !$min_id && !$since_id) {
            $statuses = $statuses->orderBy('id', 'desc')
                ->paginate($limit);
        } else if($since_id) {
            $statuses = $statuses->where('id', '>', $since_id)
                ->orderBy('id', 'DESC')
                ->paginate($limit);
        } else if($min_id) {
            $statuses = $statuses->where('id', '>', $min_id)
                ->orderBy('id', 'ASC')
                ->paginate($limit);
        } else if($max_id) {
            $statuses = $statuses->where('id', '<', $max_id)
                ->orderBy('id', 'DESC')
                ->paginate($limit);
        } else {
            $statuses = $statuses->whereVisibility('public')->orderBy('id', 'desc')->paginate($limit);
        }
        $resource = new Fractal\Resource\Collection($statuses, new StatusTransformer());
        $res = $this->fractal->createData($resource)->toArray();

        return response()->json($res);
    }

    public function followSuggestions(Request $request)
    {
        $followers = Auth::user()->profile->recommendFollowers();
        $resource = new Fractal\Resource\Collection($followers, new AccountTransformer());
        $res = $this->fractal->createData($resource)->toArray();

        return response()->json($res);
    }

    public function avatarUpdate(Request $request)
    {
        $this->validate($request, [
            'upload'   => 'required|mimes:jpeg,png,gif|max:'.config('pixelfed.max_avatar_size'),
        ]);

        try {
            $user = Auth::user();
            $profile = $user->profile;
            $file = $request->file('upload');
            $path = (new AvatarController())->getPath($user, $file);
            $dir = $path['root'];
            $name = $path['name'];
            $public = $path['storage'];
            $currentAvatar = storage_path('app/'.$profile->avatar->media_path);
            $loc = $request->file('upload')->storeAs($public, $name);

            $avatar = Avatar::whereProfileId($profile->id)->firstOrFail();
            $opath = $avatar->media_path;
            $avatar->media_path = "$public/$name";
            $avatar->thumb_path = null;
            $avatar->change_count = ++$avatar->change_count;
            $avatar->last_processed_at = null;
            $avatar->save();

            Cache::forget("avatar:{$profile->id}");
            AvatarOptimize::dispatch($user->profile, $currentAvatar);
        } catch (Exception $e) {
        }

        return response()->json([
            'code' => 200,
            'msg'  => 'Avatar successfully updated',
        ]);
    }

    public function showTempMedia(Request $request, int $profileId, $mediaId)
    {
        if (!$request->hasValidSignature()) {
            abort(401);
        }
        $profile = Auth::user()->profile;
        if($profile->id !== $profileId) {
            abort(403);
        }
        $media = Media::whereProfileId($profile->id)->findOrFail($mediaId);
        $path = storage_path('app/'.$media->media_path);
        return response()->file($path);
    }

    public function uploadMedia(Request $request)
    {
        $this->validate($request, [
              'file.*'      => function() {
                return [
                    'required',
                    'mimes:' . config('pixelfed.media_types'),
                    'max:' . config('pixelfed.max_photo_size'),
                ];
              },
              'filter_name' => 'nullable|string|max:24',
              'filter_class' => 'nullable|alpha_dash|max:24'
        ]);

        $user = Auth::user();
        $profile = $user->profile;

        if(config('pixelfed.enforce_account_limit') == true) {
            $size = Media::whereUserId($user->id)->sum('size') / 1000;
            $limit = (int) config('pixelfed.max_account_size');
            if ($size >= $limit) {
               abort(403, 'Account size limit reached.');
            }
        }

        $recent = Media::whereProfileId($profile->id)->whereNull('status_id')->count();

        if($recent > 50) {
            abort(403);
        }

        $monthHash = hash('sha1', date('Y').date('m'));
        $userHash = hash('sha1', $user->id.(string) $user->created_at);

        $photo = $request->file('file');

        $mimes = explode(',', config('pixelfed.media_types'));
        if(in_array($photo->getMimeType(), $mimes) == false) {
            return;
        }

        $storagePath = "public/m/{$monthHash}/{$userHash}";
        $path = $photo->store($storagePath);
        $hash = \hash_file('sha256', $photo);

        $media = new Media();
        $media->status_id = null;
        $media->profile_id = $profile->id;
        $media->user_id = $user->id;
        $media->media_path = $path;
        $media->original_sha256 = $hash;
        $media->size = $photo->getSize();
        $media->mime = $photo->getMimeType();
        $media->filter_class = $request->input('filter_class');
        $media->filter_name = $request->input('filter_name');
        $media->save();

        $url = URL::temporarySignedRoute(
            'temp-media', now()->addHours(1), ['profileId' => $profile->id, 'mediaId' => $media->id]
        );

        $preview_url = $url;
        switch ($media->mime) {
            case 'image/jpeg':
            case 'image/png':
                ImageOptimize::dispatch($media);
                break;

            case 'video/mp4':
                VideoThumbnail::dispatch($media);
                $preview_url = '/storage/no-preview.png';
                $url = '/storage/no-preview.png';
                break;
            
            default:
                break;
        }

        $resource = new Fractal\Resource\Item($media, new MediaTransformer());
        $res = $this->fractal->createData($resource)->toArray();
        $res['preview_url'] = $preview_url;
        $res['url'] = $url;
        return response()->json($res);
    }

    public function deleteMedia(Request $request)
    {
        $this->validate($request, [
            'id' => 'required|integer|min:1|exists:media,id'
        ]);

        $media = Media::whereNull('status_id')
            ->whereUserId(Auth::id())
            ->findOrFail($request->input('id'));

        Storage::delete($media->media_path);
        Storage::delete($media->thumbnail_path);

        $media->forceDelete();

        return response()->json([
            'msg' => 'Successfully deleted',
            'code' => 200
        ]);
    }

    public function verifyCredentials(Request $request)
    {
        $id = Auth::id();

        $res = Cache::remember('user:account:id:'.$id, now()->addHours(6), function() use($id) {
            $profile = Profile::whereNull('status')->whereUserId($id)->firstOrFail();
            $resource = new Fractal\Resource\Item($profile, new AccountTransformer());
            return $this->fractal->createData($resource)->toArray();
        });

        return response()->json($res);
    }
}