<?php

namespace App\Http\Controllers\Stories;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Storage;
use App\Models\Conversation;
use App\DirectMessage;
use App\Notification;
use App\Story;
use App\Status;
use App\StoryView;
use App\Jobs\StoryPipeline\StoryDelete;
use App\Jobs\StoryPipeline\StoryFanout;
use App\Jobs\StoryPipeline\StoryReplyDeliver;
use App\Jobs\StoryPipeline\StoryViewDeliver;
use App\Services\AccountService;
use App\Services\MediaPathService;
use App\Services\StoryService;
use App\Http\Resources\StoryView as StoryViewResource;

class StoryApiV1Controller extends Controller
{
	public function carousel(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);
		$pid = $request->user()->profile_id;

		if(config('database.default') == 'pgsql') {
			$s = Story::select('stories.*', 'followers.following_id')
				->leftJoin('followers', 'followers.following_id', 'stories.profile_id')
				->where('followers.profile_id', $pid)
				->where('stories.active', true)
				->get();
		} else {
			$s = Story::select('stories.*', 'followers.following_id')
				->leftJoin('followers', 'followers.following_id', 'stories.profile_id')
				->where('followers.profile_id', $pid)
				->where('stories.active', true)
				->orderBy('id')
				->get();
		}

		$nodes = $s->map(function($s) use($pid) {
			$profile = AccountService::get($s->profile_id, true);
			if(!$profile || !isset($profile['id'])) {
				return false;
			}

			return [
				'id' => (string) $s->id,
				'pid' => (string) $s->profile_id,
				'type' => $s->type,
				'src' => url(Storage::url($s->path)),
				'duration' => $s->duration ?? 3,
				'seen' => StoryService::hasSeen($pid, $s->id),
				'created_at' => $s->created_at->format('c')
			];
		})
		->filter()
		->groupBy('pid')
		->map(function($item) use($pid) {
			$profile = AccountService::get($item[0]['pid'], true);
			$url = $profile['local'] ? url("/stories/{$profile['username']}") :
				url("/i/rs/{$profile['id']}");
			return [
				'id' => 'pfs:' . $profile['id'],
				'user' => [
					'id' => (string) $profile['id'],
					'username' => $profile['username'],
					'username_acct' => $profile['acct'],
					'avatar' => $profile['avatar'],
					'local' => $profile['local'],
					'is_author' => $profile['id'] == $pid
				],
				'nodes' => $item,
				'url' => $url,
				'seen' => StoryService::hasSeen($pid, StoryService::latest($profile['id'])),
			];
		})
		->sortBy('seen')
		->values();

		$res = [
			'self' => [],
			'nodes' => $nodes,
		];

		if(Story::whereProfileId($pid)->whereActive(true)->exists()) {
			$selfStories = Story::whereProfileId($pid)
				->whereActive(true)
				->get()
				->map(function($s) use($pid) {
					return [
						'id' => (string) $s->id,
						'type' => $s->type,
						'src' => url(Storage::url($s->path)),
						'duration' => $s->duration,
						'seen' => true,
						'created_at' => $s->created_at->format('c')
					];
				})
				->sortBy('id')
				->values();
			$selfProfile = AccountService::get($pid, true);
			$res['self'] = [
				'user' => [
					'id' => (string) $selfProfile['id'],
					'username' => $selfProfile['acct'],
					'avatar' => $selfProfile['avatar'],
					'local' => $selfProfile['local'],
					'is_author' => true
				],

				'nodes' => $selfStories,
			];
		}
		return response()->json($res, 200, [], JSON_PRETTY_PRINT|JSON_UNESCAPED_SLASHES);
	}

	public function add(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);

		$this->validate($request, [
			'file' => function() {
				return [
					'required',
					'mimetypes:image/jpeg,image/png,video/mp4',
					'max:' . config_cache('pixelfed.max_photo_size'),
				];
			},
			'duration' => 'sometimes|integer|min:0|max:30'
		]);

		$user = $request->user();

		$count = Story::whereProfileId($user->profile_id)
			->whereActive(true)
			->where('expires_at', '>', now())
			->count();

		if($count >= Story::MAX_PER_DAY) {
			abort(418, 'You have reached your limit for new Stories today.');
		}

		$photo = $request->file('file');
		$path = $this->storeMedia($photo, $user);

		$story = new Story();
		$story->duration = $request->input('duration', 3);
		$story->profile_id = $user->profile_id;
		$story->type = Str::endsWith($photo->getMimeType(), 'mp4') ? 'video' :'photo';
		$story->mime = $photo->getMimeType();
		$story->path = $path;
		$story->local = true;
		$story->size = $photo->getSize();
		$story->bearcap_token = str_random(64);
		$story->expires_at = now()->addMinutes(1440);
		$story->save();

		$url = $story->path;

		$res = [
			'code' => 200,
			'msg'  => 'Successfully added',
			'media_id' => (string) $story->id,
			'media_url' => url(Storage::url($url)) . '?v=' . time(),
			'media_type' => $story->type
		];

		return $res;
	}

	public function publish(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);

		$this->validate($request, [
			'media_id' => 'required',
			'duration' => 'required|integer|min:0|max:30',
			'can_reply' => 'required|boolean',
			'can_react' => 'required|boolean'
		]);

		$id = $request->input('media_id');
		$user = $request->user();
		$story = Story::whereProfileId($user->profile_id)
			->findOrFail($id);

		$story->active = true;
		$story->duration = $request->input('duration', 10);
		$story->can_reply = $request->input('can_reply');
		$story->can_react = $request->input('can_react');
		$story->save();

		StoryService::delLatest($story->profile_id);
		StoryFanout::dispatch($story)->onQueue('story');
		StoryService::addRotateQueue($story->id);

		return [
			'code' => 200,
			'msg'  => 'Successfully published',
		];
	}

	public function delete(Request $request, $id)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);

		$user = $request->user();

		$story = Story::whereProfileId($user->profile_id)
			->findOrFail($id);
		$story->active = false;
		$story->save();

		StoryDelete::dispatch($story)->onQueue('story');

		return [
			'code' => 200,
			'msg'  => 'Successfully deleted'
		];
	}

	public function viewed(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);

		$this->validate($request, [
			'id'	=> 'required|min:1',
		]);
		$id = $request->input('id');

		$authed = $request->user()->profile;

		$story = Story::with('profile')
			->findOrFail($id);
		$exp = $story->expires_at;

		$profile = $story->profile;

		if($story->profile_id == $authed->id) {
			return [];
		}

		$publicOnly = (bool) $profile->followedBy($authed);
		abort_if(!$publicOnly, 403);

		$v = StoryView::firstOrCreate([
			'story_id' => $id,
			'profile_id' => $authed->id
		]);

		if($v->wasRecentlyCreated) {
			Story::findOrFail($story->id)->increment('view_count');

			if($story->local == false) {
				StoryViewDeliver::dispatch($story, $authed)->onQueue('story');
			}
		}

		Cache::forget('stories:recent:by_id:' . $authed->id);
		StoryService::addSeen($authed->id, $story->id);
		return ['code' => 200];
	}

	public function comment(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);
		$this->validate($request, [
			'sid' => 'required',
			'caption' => 'required|string'
		]);
		$pid = $request->user()->profile_id;
		$text = $request->input('caption');

		$story = Story::findOrFail($request->input('sid'));

		abort_if(!$story->can_reply, 422);

		$status = new Status;
		$status->type = 'story:reply';
		$status->profile_id = $pid;
		$status->caption = $text;
		$status->rendered = $text;
		$status->scope = 'direct';
		$status->visibility = 'direct';
		$status->in_reply_to_profile_id = $story->profile_id;
		$status->entities = json_encode([
			'story_id' => $story->id
		]);
		$status->save();

		$dm = new DirectMessage;
		$dm->to_id = $story->profile_id;
		$dm->from_id = $pid;
		$dm->type = 'story:comment';
		$dm->status_id = $status->id;
		$dm->meta = json_encode([
			'story_username' => $story->profile->username,
			'story_actor_username' => $request->user()->username,
			'story_id' => $story->id,
			'story_media_url' => url(Storage::url($story->path)),
			'caption' => $text
		]);
		$dm->save();

		Conversation::updateOrInsert(
			[
				'to_id' => $story->profile_id,
				'from_id' => $pid
			],
			[
				'type' => 'story:comment',
				'status_id' => $status->id,
				'dm_id' => $dm->id,
				'is_hidden' => false
			]
		);

		if($story->local) {
			$n = new Notification;
			$n->profile_id = $dm->to_id;
			$n->actor_id = $dm->from_id;
			$n->item_id = $dm->id;
			$n->item_type = 'App\DirectMessage';
			$n->action = 'story:comment';
			$n->save();
		} else {
			StoryReplyDeliver::dispatch($story, $status)->onQueue('story');
		}

		return [
			'code' => 200,
			'msg'  => 'Sent!'
		];
	}

	protected function storeMedia($photo, $user)
	{
		$mimes = explode(',', config_cache('pixelfed.media_types'));
		if(in_array($photo->getMimeType(), [
			'image/jpeg',
			'image/png',
			'video/mp4'
		]) == false) {
			abort(400, 'Invalid media type');
			return;
		}

		$storagePath = MediaPathService::story($user->profile);
		$path = $photo->storePubliclyAs($storagePath, Str::random(random_int(2, 12)) . '_' . Str::random(random_int(32, 35)) . '_' . Str::random(random_int(1, 14)) . '.' . $photo->extension());
		return $path;
	}

	public function viewers(Request $request)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);

		$this->validate($request, [
			'sid' => 'required|string|min:1|max:50'
		]);

		$pid = $request->user()->profile_id;
		$sid = $request->input('sid');

		$story = Story::whereProfileId($pid)
			->whereActive(true)
			->findOrFail($sid);

		$viewers = StoryView::whereStoryId($story->id)
            ->orderByDesc('id')
			->cursorPaginate(10);

		return StoryViewResource::collection($viewers);
	}
}