<?php

namespace App\Http\Controllers;

use App\AccountInterstitial;
use App\Bookmark;
use App\DirectMessage;
use App\DiscoverCategory;
use App\Follower;
use App\Jobs\ModPipeline\HandleSpammerPipeline;
use App\Profile;
use App\Services\BookmarkService;
use App\Services\DiscoverService;
use App\Services\FollowerService;
use App\Services\ModLogService;
use App\Services\PublicTimelineService;
use App\Services\StatusService;
use App\Services\UserFilterService;
use App\Status; // StatusMediaContainerTransformer,
use App\Transformer\Api\StatusTransformer;
use App\User;
use Auth;
use Cache;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Redis;
use Illuminate\Validation\Rule;
use League\Fractal;
use League\Fractal\Serializer\ArraySerializer;

class InternalApiController extends Controller
{
    protected $fractal;

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

    // deprecated v2 compose api
    public function compose(Request $request)
    {
        return redirect('/');
    }

    // deprecated
    public function discover(Request $request) {}

    public function discoverPosts(Request $request)
    {
        $pid = $request->user()->profile_id;
        $filters = UserFilterService::filters($pid);
        $forYou = DiscoverService::getForYou();
        $posts = $forYou->take(50)->map(function ($post) {
            return StatusService::get($post);
        })
            ->filter(function ($post) use ($filters) {
                return $post &&
                    isset($post['account']) &&
                    isset($post['account']['id']) &&
                    ! in_array($post['account']['id'], $filters);
            })
            ->take(12)
            ->values();

        return response()->json(compact('posts'));
    }

    public function directMessage(Request $request, $profileId, $threadId)
    {
        $profile = Auth::user()->profile;

        if ($profileId != $profile->id) {
            abort(403);
        }

        $msg = DirectMessage::whereToId($profile->id)
            ->orWhere('from_id', $profile->id)
            ->findOrFail($threadId);

        $thread = DirectMessage::with('status')->whereIn('to_id', [$profile->id, $msg->from_id])
            ->whereIn('from_id', [$profile->id, $msg->from_id])
            ->orderBy('created_at', 'asc')
            ->paginate(30);

        return response()->json(compact('msg', 'profile', 'thread'), 200, [], JSON_PRETTY_PRINT);
    }

    public function statusReplies(Request $request, int $id)
    {
        $this->validate($request, [
            'limit' => 'nullable|int|min:1|max:6',
        ]);
        $user = $request->user();
        $parent = Status::whereScope('public')->findOrFail($id);
        $limit = $request->input('limit') ?? 3;
        $children = Status::whereInReplyToId($parent->id)
            ->orderBy('created_at', 'desc')
            ->take($limit * 3)
            ->get()
            ->filter(function ($s) use ($user) {
                if (in_array($s->scope, ['public', 'unlisted'])) {
                    return true;
                }
                if ($s->scope === 'private') {
                    return $user && ($s->profile_id === $user->profile_id
                        || FollowerService::follows($user->profile_id, $s->profile_id));
                }
                return false;
            })->take($limit);
        $resource = new Fractal\Resource\Collection($children, new StatusTransformer);
        $res = $this->fractal->createData($resource)->toArray();

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

    public function stories(Request $request) {}

    public function discoverCategories(Request $request)
    {
        $categories = DiscoverCategory::whereActive(true)->orderBy('order')->take(10)->get();
        $res = $categories->map(function ($item) {
            return [
                'name' => $item->name,
                'url' => $item->url(),
                'thumb' => $item->thumb(),
            ];
        });

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

    public function modAction(Request $request)
    {
        abort_unless(Auth::user()->is_admin, 400);
        $this->validate($request, [
            'action' => [
                'required',
                'string',
                Rule::in([
                    'addcw',
                    'remcw',
                    'unlist',
                    'spammer',
                ]),
            ],
            'item_id' => 'required|integer|min:1',
            'item_type' => [
                'required',
                'string',
                Rule::in(['profile', 'status']),
            ],
        ]);

        $action = $request->input('action');
        $item_id = $request->input('item_id');
        $item_type = $request->input('item_type');

        $status = Status::findOrFail($item_id);
        $author = User::whereProfileId($status->profile_id)->first();
        abort_if($author && $author->is_admin, 422, 'Cannot moderate administrator accounts');

        switch ($action) {
            case 'addcw':
                $status->is_nsfw = true;
                $status->save();
                ModLogService::boot()
                    ->user(Auth::user())
                    ->objectUid($status->profile->user_id)
                    ->objectId($status->id)
                    ->objectType('App\Status::class')
                    ->action('admin.status.moderate')
                    ->metadata([
                        'action' => 'cw',
                        'message' => 'Success!',
                    ])
                    ->accessLevel('admin')
                    ->save();

                if ($status->uri == null) {
                    $media = $status->media;
                    $ai = new AccountInterstitial;
                    $ai->user_id = $status->profile->user_id;
                    $ai->type = 'post.cw';
                    $ai->view = 'account.moderation.post.cw';
                    $ai->item_type = 'App\Status';
                    $ai->item_id = $status->id;
                    $ai->has_media = (bool) $media->count();
                    $ai->blurhash = $media->count() ? $media->first()->blurhash : null;
                    $ai->meta = json_encode([
                        'caption' => $status->caption,
                        'created_at' => $status->created_at,
                        'type' => $status->type,
                        'url' => $status->url(),
                        'is_nsfw' => $status->is_nsfw,
                        'scope' => $status->scope,
                        'reblog' => $status->reblog_of_id,
                        'likes_count' => $status->likes_count,
                        'reblogs_count' => $status->reblogs_count,
                    ]);
                    $ai->save();

                    $u = $status->profile->user;
                    $u->has_interstitial = true;
                    $u->save();
                }
                break;

            case 'remcw':
                $status->is_nsfw = false;
                $status->save();
                ModLogService::boot()
                    ->user(Auth::user())
                    ->objectUid($status->profile->user_id)
                    ->objectId($status->id)
                    ->objectType('App\Status::class')
                    ->action('admin.status.moderate')
                    ->metadata([
                        'action' => 'remove_cw',
                        'message' => 'Success!',
                    ])
                    ->accessLevel('admin')
                    ->save();
                if ($status->uri == null) {
                    $ai = AccountInterstitial::whereUserId($status->profile->user_id)
                        ->whereType('post.cw')
                        ->whereItemId($status->id)
                        ->whereItemType('App\Status')
                        ->first();
                    $ai->delete();
                }
                break;

            case 'unlist':
                $status->scope = $status->visibility = 'unlisted';
                $status->save();
                PublicTimelineService::del($status->id);
                ModLogService::boot()
                    ->user(Auth::user())
                    ->objectUid($status->profile->user_id)
                    ->objectId($status->id)
                    ->objectType('App\Status::class')
                    ->action('admin.status.moderate')
                    ->metadata([
                        'action' => 'unlist',
                        'message' => 'Success!',
                    ])
                    ->accessLevel('admin')
                    ->save();

                if ($status->uri == null) {
                    $media = $status->media;
                    $ai = new AccountInterstitial;
                    $ai->user_id = $status->profile->user_id;
                    $ai->type = 'post.unlist';
                    $ai->view = 'account.moderation.post.unlist';
                    $ai->item_type = 'App\Status';
                    $ai->item_id = $status->id;
                    $ai->has_media = (bool) $media->count();
                    $ai->blurhash = $media->count() ? $media->first()->blurhash : null;
                    $ai->meta = json_encode([
                        'caption' => $status->caption,
                        'created_at' => $status->created_at,
                        'type' => $status->type,
                        'url' => $status->url(),
                        'is_nsfw' => $status->is_nsfw,
                        'scope' => $status->scope,
                        'reblog' => $status->reblog_of_id,
                        'likes_count' => $status->likes_count,
                        'reblogs_count' => $status->reblogs_count,
                    ]);
                    $ai->save();

                    $u = $status->profile->user;
                    $u->has_interstitial = true;
                    $u->save();
                }
                break;

            case 'spammer':
                HandleSpammerPipeline::dispatch($status->profile);
                ModLogService::boot()
                    ->user(Auth::user())
                    ->objectUid($status->profile->user_id)
                    ->objectId($status->id)
                    ->objectType('App\User::class')
                    ->action('admin.status.moderate')
                    ->metadata([
                        'action' => 'spammer',
                        'message' => 'Success!',
                    ])
                    ->accessLevel('admin')
                    ->save();
                break;
        }

        StatusService::del($status->id, true);

        return ['msg' => 200];
    }

    public function composePost(Request $request)
    {
        abort(400, 'Endpoint deprecated');
    }

    public function bookmarks(Request $request)
    {
        $pid = $request->user()->profile_id;
        $res = Bookmark::whereProfileId($pid)
            ->orderByDesc('created_at')
            ->simplePaginate(10)
            ->map(function ($bookmark) use ($pid) {
                $status = StatusService::get($bookmark->status_id, false);
                if (! $status) {
                    return false;
                }
                $status['bookmarked_at'] = str_replace('+00:00', 'Z', $bookmark->created_at->format(DATE_RFC3339_EXTENDED));

                if ($status) {
                    BookmarkService::add($pid, $status['id']);
                }

                return $status;
            })
            ->filter(function ($bookmark) {
                return $bookmark && isset($bookmark['id']);
            })
            ->values();

        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:0|max:' . PHP_INT_MAX,
            'since_id' => 'nullable|integer|min:0|max:' . PHP_INT_MAX,
            'min_id' => 'nullable|integer|min:0|max:' . PHP_INT_MAX,
            'limit' => 'nullable|integer|min:1|max:24',
        ]);

        $profile = Profile::whereNull('status')->findOrFail($id);

        $limit = $request->limit ?? 9;
        $max_id = $request->max_id;
        $min_id = $request->min_id;
        $scope = $request->only_media == true ?
            ['photo', 'photo:album', 'video', 'video:album'] :
            ['photo', 'photo:album', 'video', 'video:album', 'share', 'reply'];

        if ($profile->is_private) {
            if (! Auth::check()) {
                return response()->json([]);
            }
            $pid = Auth::user()->profile->id;
            $following = Cache::remember('profile:following:' . $pid, now()->addMinutes(1440), function () use ($pid) {
                $following = Follower::whereProfileId($pid)->pluck('following_id');

                return $following->push($pid)->toArray();
            });
            $visibility = in_array($profile->id, $following) == true ? ['public', 'unlisted', 'private'] : [];
        } else {
            if (Auth::check()) {
                $pid = Auth::user()->profile->id;
                $following = Cache::remember('profile:following:' . $pid, now()->addMinutes(1440), function () use ($pid) {
                    $following = Follower::whereProfileId($pid)->pluck('following_id');

                    return $following->push($pid)->toArray();
                });
                $visibility = in_array($profile->id, $following) == true ? ['public', 'unlisted', 'private'] : ['public', 'unlisted'];
            } else {
                $visibility = ['public', 'unlisted'];
            }
        }

        $dir = $min_id ? '>' : '<';
        $id = $min_id ?? $max_id;
        $timeline = Status::select(
            'id',
            'uri',
            'caption',
            'profile_id',
            'type',
            'in_reply_to_id',
            'reblog_of_id',
            'is_nsfw',
            'likes_count',
            'reblogs_count',
            'scope',
            'local',
            'created_at',
            'updated_at'
        )->whereProfileId($profile->id)
            ->whereIn('type', $scope)
            ->where('id', $dir, $id)
            ->whereIn('visibility', $visibility)
            ->latest()
            ->limit($limit)
            ->get();

        $resource = new Fractal\Resource\Collection($timeline, new StatusTransformer);
        $res = $this->fractal->createData($resource)->toArray();

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

    public function remoteProfile(Request $request, $id)
    {
        return redirect('/i/web/profile/' . $id);
    }

    public function remoteStatus(Request $request, $profileId, $statusId)
    {
        return redirect('/i/web/post/' . $statusId);
    }

    public function requestEmailVerification(Request $request)
    {
        $pid = $request->user()->profile_id;
        $exists = Redis::sismember('email:manual', $pid);

        return view('account.email.request_verification', compact('exists'));
    }

    public function requestEmailVerificationStore(Request $request)
    {
        $pid = $request->user()->profile_id;
        Redis::sadd('email:manual', $pid);

        return redirect('/i/verify-email')->with(['status' => 'Successfully sent manual verification request!']);
    }
}
