<?php

namespace App\Http\Controllers;

use Auth;
use App\Hashtag;
use App\Place;
use App\Profile;
use App\Status;
use Illuminate\Http\Request;
use App\Util\ActivityPub\Helpers;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Str;
use App\Transformer\Api\{
	AccountTransformer,
	HashtagTransformer,
	StatusTransformer,
};
use App\Services\WebfingerService;

class SearchController extends Controller
{
	public $tokens = [];
	public $term = '';
	public $hash = '';
	public $cacheKey = 'api:search:tag:';

	public function __construct()
	{
		$this->middleware('auth');
	}

	public function searchAPI(Request $request)
	{
		$this->validate($request, [
			'q' => 'required|string|min:3|max:120',
			'src' => 'required|string|in:metro',
			'v' => 'required|integer|in:2',
			'scope' => 'required|in:all,hashtag,profile,remote,webfinger'
		]);

		$scope = $request->input('scope') ?? 'all';
		$this->term = e(urldecode($request->input('q')));
		$this->hash = hash('sha256', $this->term);

		switch ($scope) {
			case 'all':
				$this->getHashtags();
				$this->getPosts();
				$this->getProfiles();
				// $this->getPlaces();
				break;

			case 'hashtag':
				$this->getHashtags();
				break;

			case 'profile':
				$this->getProfiles();
				break;

			case 'webfinger':
				$this->webfingerSearch();
				break;

			case 'remote':
				$this->remoteLookupSearch();
				break;

			case 'place':
				$this->getPlaces();
				break;

			default:
				break;
		}

		return response()->json($this->tokens, 200, [], JSON_PRETTY_PRINT);
	}

	protected function getPosts()
	{
		$tag = $this->term;
		$hash = hash('sha256', $tag);
		if( Helpers::validateUrl($tag) != false &&
			Helpers::validateLocalUrl($tag) != true &&
			config_cache('federation.activitypub.enabled') == true &&
			config('federation.activitypub.remoteFollow') == true
		) {
			$remote = Helpers::fetchFromUrl($tag);
			if( isset($remote['type']) &&
				$remote['type'] == 'Note') {
				$item = Helpers::statusFetch($tag);
				$this->tokens['posts'] = [[
					'count'  => 0,
					'url'    => $item->url(),
					'type'   => 'status',
					'value'  => "by {$item->profile->username} <span class='float-right'>{$item->created_at->diffForHumans(null, true, true)}</span>",
					'tokens' => [$item->caption],
					'name'   => $item->caption,
					'thumb'  => $item->thumb(),
				]];
			}
		} else {
			$posts = Status::select('id', 'profile_id', 'caption', 'created_at')
						->whereHas('media')
						->whereNull('in_reply_to_id')
						->whereNull('reblog_of_id')
						->whereProfileId(Auth::user()->profile_id)
						->where('caption', 'like', '%'.$tag.'%')
						->latest()
						->limit(10)
						->get();

			if($posts->count() > 0) {
				$posts = $posts->map(function($item, $key) {
					return [
						'count'  => 0,
						'url'    => $item->url(),
						'type'   => 'status',
						'value'  => "by {$item->profile->username} <span class='float-right'>{$item->created_at->diffForHumans(null, true, true)}</span>",
						'tokens' => [$item->caption],
						'name'   => $item->caption,
						'thumb'  => $item->thumb(),
						'filter' => $item->firstMedia()->filter_class
					];
				});
				$this->tokens['posts'] = $posts;
			}
		}
	}

	protected function getHashtags()
	{
		$tag = $this->term;
		$key = $this->cacheKey . 'hashtags:' . $this->hash;
		$ttl = now()->addMinutes(1);
		$tokens = Cache::remember($key, $ttl, function() use($tag) {
			$htag = Str::startsWith($tag, '#') == true ? mb_substr($tag, 1) : $tag;
			$hashtags = Hashtag::select('id', 'name', 'slug')
				->where('slug', 'like', '%'.$htag.'%')
				->whereHas('posts')
				->limit(20)
				->get();
			if($hashtags->count() > 0) {
				$tags = $hashtags->map(function ($item, $key) {
					return [
						'count'  => $item->posts()->count(),
						'url'    => $item->url(),
						'type'   => 'hashtag',
						'value'  => $item->name,
						'tokens' => '',
						'name'   => null,
					];
				});
				return $tags;
			}
		});
		$this->tokens['hashtags'] = $tokens;
	}

	protected function getPlaces()
	{
		$tag = $this->term;
		// $key = $this->cacheKey . 'places:' . $this->hash;
		// $ttl = now()->addHours(12);
		// $tokens = Cache::remember($key, $ttl, function() use($tag) {
			$htag = Str::contains($tag, ',') == true ? explode(',', $tag) : [$tag];
			$hashtags = Place::select('id', 'name', 'slug', 'country')
				->where('name', 'like', '%'.$htag[0].'%')
				->paginate(20);
			$tags = [];
			if($hashtags->count() > 0) {
				$tags = $hashtags->map(function ($item, $key) {
					return [
						'count'     => null,
						'url'       => $item->url(),
						'type'      => 'place',
						'value'     => $item->name . ', ' . $item->country,
						'tokens'    => '',
						'name'      => null,
						'city'      => $item->name,
						'country'   => $item->country
					];
				});
				// return $tags;
			}
		// });
		$this->tokens['places'] = $tags;
		$this->tokens['placesPagination'] = [
			'total' => $hashtags->total(),
			'current_page' => $hashtags->currentPage(),
			'last_page' => $hashtags->lastPage()
		];
	}

	protected function getProfiles()
	{
		$tag = $this->term;
		$remoteKey = $this->cacheKey . 'profiles:remote:' . $this->hash;
		$key = $this->cacheKey . 'profiles:' . $this->hash;
		$remoteTtl = now()->addMinutes(15);
		$ttl = now()->addHours(2);
		if( Helpers::validateUrl($tag) != false &&
			Helpers::validateLocalUrl($tag) != true &&
			config_cache('federation.activitypub.enabled') == true &&
			config('federation.activitypub.remoteFollow') == true
		) {
			$remote = Helpers::fetchFromUrl($tag);
			if( isset($remote['type']) &&
				$remote['type'] == 'Person'
			) {
				$this->tokens['profiles'] = Cache::remember($remoteKey, $remoteTtl, function() use($tag) {
					$item = Helpers::profileFirstOrNew($tag);
					$tokens = [[
						'count'  => 1,
						'url'    => $item->url(),
						'type'   => 'profile',
						'value'  => $item->username,
						'tokens' => [$item->username],
						'name'   => $item->name,
						'entity' => [
							'id' => (string) $item->id,
							'following' => $item->followedBy(Auth::user()->profile),
							'follow_request' => $item->hasFollowRequestById(Auth::user()->profile_id),
							'thumb' => $item->avatarUrl(),
							'local' => (bool) !$item->domain,
							'post_count' => $item->statuses()->count()
						]
					]];
					return $tokens;
				});
			}
		}

		else {
			$this->tokens['profiles'] = Cache::remember($key, $ttl, function() use($tag) {
				if(Str::startsWith($tag, '@')) {
					$tag = substr($tag, 1);
				}
				$users = Profile::select('status', 'domain', 'username', 'name', 'id')
					->whereNull('status')
					->where('username', 'like', '%'.$tag.'%')
					->limit(20)
					->orderBy('domain')
					->get();

				if($users->count() > 0) {
					return $users->map(function ($item, $key) {
						return [
							'count'  => 0,
							'url'    => $item->url(),
							'type'   => 'profile',
							'value'  => $item->username,
							'tokens' => [$item->username],
							'name'   => $item->name,
							'avatar' => $item->avatarUrl(),
							'id'     =>  (string) $item->id,
							'entity' => [
								'id' => (string) $item->id,
								'following' => $item->followedBy(Auth::user()->profile),
								'follow_request' => $item->hasFollowRequestById(Auth::user()->profile_id),
								'thumb' => $item->avatarUrl(),
								'local' => (bool) !$item->domain,
								'post_count' => $item->statuses()->count()
							]
						];
					});
				}
			});
		}
	}

	public function results(Request $request)
	{
		$this->validate($request, [
			'q' => 'required|string|min:1',
		]);

		return view('search.results');
	}

	protected function webfingerSearch()
	{
		$wfs = WebfingerService::lookup($this->term);

		if(empty($wfs)) {
			return;
		}

		$this->tokens['profiles'] = [
			[
				'count'  => 1,
				'url'    => $wfs['url'],
				'type'   => 'profile',
				'value'  => $wfs['username'],
				'tokens' => [$wfs['username']],
				'name'   => $wfs['display_name'],
				'entity' => [
					'id' => (string) $wfs['id'],
					'following' => null,
					'follow_request' => null,
					'thumb' => $wfs['avatar'],
					'local' => (bool) $wfs['local']
				]
			]
		];
		return;
	}

	protected function remotePostLookup()
	{
		$tag = $this->term;
		$hash = hash('sha256', $tag);
		$local = Helpers::validateLocalUrl($tag);
		$valid = Helpers::validateUrl($tag);

		if($valid == false || $local == true) {
			return;
		}

		if(Status::whereUri($tag)->whereLocal(false)->exists()) {
			$item = Status::whereUri($tag)->first();
			$this->tokens['posts'] = [[
				'count'  => 0,
				'url'    => "/i/web/post/_/$item->profile_id/$item->id",
				'type'   => 'status',
				'username' => $item->profile->username,
				'caption'   => $item->rendered ?? $item->caption,
				'thumb'  => $item->firstMedia()->remote_url,
				'timestamp' => $item->created_at->diffForHumans()
			]];
		}

		$remote = Helpers::fetchFromUrl($tag);

		if(isset($remote['type']) && $remote['type'] == 'Note') {
			$item = Helpers::statusFetch($tag);
			$this->tokens['posts'] = [[
				'count'  => 0,
				'url'    => "/i/web/post/_/$item->profile_id/$item->id",
				'type'   => 'status',
				'username' => $item->profile->username,
				'caption'   => $item->rendered ?? $item->caption,
				'thumb'  => $item->firstMedia()->remote_url,
				'timestamp' => $item->created_at->diffForHumans()
			]];
		}
	}

	protected function remoteLookupSearch()
	{
		if(!Helpers::validateUrl($this->term)) {
			return;
		}
		$this->getProfiles();
		$this->remotePostLookup();
	}
}