<?php

namespace App\Http\Controllers;

use DB;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use App\Models\Group;
use App\Models\GroupActivityGraph;
use App\Models\GroupBlock;
use App\Models\GroupCategory;
use App\Models\GroupComment;
use App\Models\GroupEvent;
use App\Models\GroupInteraction;
use App\Models\GroupInvitation;
use App\Models\GroupLimit;
use App\Models\GroupLike;
use App\Models\GroupMember;
use App\Models\GroupPost;
use App\Models\GroupPostHashtag;
use App\Models\GroupReport;
use App\Models\GroupRole;
use App\Models\GroupStore;
use App\Models\Poll;
use App\Follower;
use App\Instance;
use App\Hashtag;
use App\StatusHashtag;
use App\Like;
use App\Media;
use App\Notification;
use App\Profile;
use App\Status;
use App\User;
use App\Util\Lexer\Autolink;
use App\Services\AccountService;
use App\Services\FollowerService;
use App\Services\HashidService;
use App\Services\LikeService;
use App\Services\Groups\GroupCommentService;
use App\Services\Groups\GroupsLikeService;
use App\Services\HashtagService;
use App\Services\GroupService;
use App\Services\GroupFeedService;
use App\Services\GroupPostService;
use App\Services\PollService;
use App\Services\RelationshipService;
use App\Services\StatusService;
use App\Services\UserFilterService;
use Cache;
use Storage;
use Purify;
use App\Jobs\GroupPipeline\LikePipeline;
use App\Jobs\GroupPipeline\UnlikePipeline;
use App\Jobs\ImageOptimizePipeline\ImageOptimize;
use App\Jobs\VideoPipeline\VideoThumbnail;
use App\Jobs\StatusPipeline\StatusDelete;
use App\Jobs\GroupPipeline\GroupCommentPipeline;
use App\Jobs\GroupPipeline\GroupMemberInvite;
use App\Jobs\GroupPipeline\NewStatusPipeline;
use App\Jobs\GroupPipeline\JoinApproved;
use App\Jobs\GroupPipeline\JoinRejected;
use Illuminate\Support\Facades\RateLimiter;

class GroupController extends GroupFederationController
{
	public function __construct()
	{
		// $this->middleware('auth');
	}

	public function index(Request $request)
	{
		abort_if(!$request->user(), 404);
		return view('layouts.spa');
	}

	public function home(Request $request)
	{
		abort_if(!$request->user(), 404);
		return view('layouts.spa');
	}

	public function show(Request $request, $id, $path = false)
	{
		$group = Group::find($id);

		if(!$group || $group->status) {
			return response()->view('groups.unavailable')->setStatusCode(404);
		}

		if($request->wantsJson()) {
			return $this->showGroupObject($group);
		}
		return view('layouts.spa', compact('id', 'path'));
	}

	public function showStatus(Request $request, $gid, $sid)
	{
		$group = Group::find($gid);
		$pid = optional($request->user())->profile_id ?? false;

		if(!$group || $group->status) {
			return response()->view('groups.unavailable')->setStatusCode(404);
		}

		if($group->is_private) {
			abort_if(!$request->user(), 404);
			abort_if(!$group->isMember($pid), 404);
		}

		$gp = GroupPost::whereGroupId($gid)
			->findOrFail($sid);
		return view('layouts.spa', compact('group', 'gp'));
	}

	public function getGroup(Request $request, $id)
	{
		$group = Group::whereNull('status')->findOrFail($id);
		$pid = optional($request->user())->profile_id ?? false;

		$group = $this->toJson($group, $pid);

		return response()->json($group, 200, [], JSON_PRETTY_PRINT|JSON_UNESCAPED_SLASHES);
	}


	public function showStatusLikes(Request $request, $id, $sid)
	{
		$group = Group::findOrFail($id);
		$user = $request->user();
		$pid = $user->profile_id;
		abort_if(!$group->isMember($pid), 404);
		$status = GroupPost::whereGroupId($id)->findOrFail($sid);
		$likes = GroupLike::whereStatusId($sid)
			->cursorPaginate(10)
			->map(function($l) use($group) {
				$account = AccountService::get($l->profile_id);
				$account['url'] = "/groups/{$group->id}/user/{$account['id']}";
				return $account;
			})
			->filter(function($l) {
				return $l && isset($l['id']);
			})
			->values();
		return $likes;
	}

	public function groupSettings(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);
		abort_if(!in_array($group->selfRole($pid), ['founder', 'admin']), 404);

		return view('groups.settings', compact('group'));
	}

	public function joinGroup(Request $request, $id)
	{
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if($group->isMember($pid), 404);

        if(!$request->user()->is_admin) {
		  abort_if(GroupService::getRejoinTimeout($group->id, $pid), 422, 'Cannot re-join this group for 24 hours after leaving or cancelling a request to join');
        }

		$member = new GroupMember;
		$member->group_id = $group->id;
		$member->profile_id = $pid;
		$member->role = 'member';
		$member->local_group = true;
		$member->local_profile = true;
		$member->join_request = $group->is_private;
		$member->save();

		GroupService::delSelf($group->id, $pid);
		GroupService::log(
			$group->id,
			$pid,
			'group:joined',
			null,
			GroupMember::class,
			$member->id
		);

		$group = $this->toJson($group, $pid);

		return $group;
	}

	public function updateGroup(Request $request, $id)
	{
		$this->validate($request, [
			'description' => 'nullable|max:500',
			'membership' => 'required|in:all,local,private',
			'avatar' => 'nullable',
			'header' => 'nullable',
			'discoverable' => 'required',
			'activitypub' => 'required',
			'is_nsfw' => 'required',
			'category' => 'required|string|in:' . implode(',',GroupService::categories())
		]);

		$pid = $request->user()->profile_id;
		$group = Group::whereProfileId($pid)->findOrFail($id);
		$member = GroupMember::whereGroupId($group->id)->whereProfileId($pid)->firstOrFail();

		abort_if($member->role != 'founder', 403, 'Invalid group permission');

		$metadata = $group->metadata;
		$len = $group->is_private ? 12 : 4;

		if($request->hasFile('avatar')) {
			$avatar = $request->file('avatar');

			if($avatar) {
				if( isset($metadata['avatar']) &&
					isset($metadata['avatar']['path']) &&
					Storage::exists($metadata['avatar']['path'])
				) {
					Storage::delete($metadata['avatar']['path']);
				}

				$fileName = 'avatar_' . strtolower(str_random($len)) . '.' . $avatar->extension();
				$path = $avatar->storePubliclyAs('public/g/'.$group->id.'/meta', $fileName);
				$url = url(Storage::url($path));
				$metadata['avatar'] = [
					'path' => $path,
					'url' => $url,
					'updated_at' => now()
				];
			}
		}

		if($request->hasFile('header')) {
			$header = $request->file('header');

			if($header) {
				if( isset($metadata['header']) &&
					isset($metadata['header']['path']) &&
					Storage::exists($metadata['header']['path'])
				) {
					Storage::delete($metadata['header']['path']);
				}

				$fileName = 'header_' . strtolower(str_random($len)) . '.' . $header->extension();
				$path = $header->storePubliclyAs('public/g/'.$group->id.'/meta', $fileName);
				$url = url(Storage::url($path));
				$metadata['header'] = [
					'path' => $path,
					'url' => $url,
					'updated_at' => now()
				];
			}
		}

		$cat = GroupService::categoryById($group->category_id);
		if($request->category !== $cat['name']) {
			$group->category_id = GroupCategory::whereName($request->category)->first()->id;
		}

		$changes = null;
		$group->description = e($request->input('description', null));
		$group->is_private = $request->input('membership') == 'private';
		$group->local_only = $request->input('membership') == 'local';
		$group->activitypub = $request->input('activitypub') == "true";
		$group->discoverable = $request->input('discoverable') == "true";
		$group->is_nsfw = $request->input('is_nsfw') == "true";
		$group->metadata = $metadata;
		if($group->isDirty()) {
			$changes = $group->getDirty();
		}
		$group->save();

		GroupService::log(
			$group->id,
			$pid,
			'group:settings:updated',
			$changes
		);

		GroupService::del($group->id);

		$res = $this->toJson($group, $pid);
		return $res;
	}

	protected function toJson($group, $pid = false)
	{
		return GroupService::get($group->id, $pid);
	}

	public function groupLeave(Request $request, $id)
	{
		abort_if(!$request->user(), 404);

		$pid = $request->user()->profile_id;
		$group = Group::findOrFail($id);

		abort_if($pid == $group->profile_id, 422, 'Cannot leave a group you created');

		abort_if(!$group->isMember($pid), 403, 'Not a member of group.');

		GroupMember::whereGroupId($group->id)->whereProfileId($pid)->delete();
		GroupService::del($group->id);
		GroupService::delSelf($group->id, $pid);
		GroupService::setRejoinTimeout($group->id, $pid);

		return [200];
	}

	public function cancelJoinRequest(Request $request, $id)
	{
		abort_if(!$request->user(), 404);

		$pid = $request->user()->profile_id;
		$group = Group::findOrFail($id);

		abort_if($pid == $group->profile_id, 422, 'Cannot leave a group you created');
		abort_if($group->isMember($pid), 422, 'Cannot cancel approved join request, please leave group instead.');

		GroupMember::whereGroupId($group->id)->whereProfileId($pid)->delete();
		GroupService::del($group->id);
		GroupService::delSelf($group->id, $pid);
		GroupService::setRejoinTimeout($group->id, $pid);

		return [200];
	}

	public function metaBlockSearch(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);
		abort_if(!in_array($group->selfRole($pid), ['founder', 'admin']), 404);

		$type = $request->input('type');
		$item = $request->input('item');

		switch($type) {
			case 'instance':
				$res = Instance::whereDomain($item)->first();
				if($res) {
					abort_if(GroupBlock::whereGroupId($group->id)->whereInstanceId($res->id)->exists(), 400);
				}
			break;

			case 'user':
				$res = Profile::whereUsername($item)->first();
				if($res) {
					abort_if(GroupBlock::whereGroupId($group->id)->whereProfileId($res->id)->exists(), 400);
				}
				if($res->user_id != null) {
					abort_if(User::whereIsAdmin(true)->whereId($res->user_id)->exists(), 400);
				}
			break;
		}

		return response()->json((bool) $res, ($res ? 200 : 404));
	}

	public function reportCreate(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);

		$id = $request->input('id');
		$type = $request->input('type');
		$types = [
			// original 3
			'spam',
			'sensitive',
			'abusive',

			// new
			'underage',
            'violence',
			'copyright',
			'impersonation',
			'scam',
			'terrorism'
		];

		$gp = GroupPost::whereGroupId($group->id)->find($id);
		abort_if(!$gp, 422, 'Cannot report an invalid or deleted post');
		abort_if(!in_array($type, $types), 422, 'Invalid report type');
		abort_if($gp->profile_id === $pid, 422, 'Cannot report your own post');
		abort_if(
			GroupReport::whereGroupId($group->id)
				->whereProfileId($pid)
				->whereItemType(GroupPost::class)
				->whereItemId($id)
				->exists(),
			422,
			'You already reported this'
		);

		$report = new GroupReport();
		$report->group_id = $group->id;
		$report->profile_id = $pid;
		$report->type = $type;
		$report->item_type = GroupPost::class;
		$report->item_id = $id;
		$report->open = true;
		$report->save();

		GroupService::log(
			$group->id,
			$pid,
			'group:report:create',
			[
				'type' => $type,
				'report_id' => $report->id,
				'status_id' => $gp->status_id,
				'profile_id' => $gp->profile_id,
				'username' => optional(AccountService::get($gp->profile_id))['acct'],
				'gpid' => $gp->id,
				'url' => $gp->url()
			],
			GroupReport::class,
			$report->id
		);

		return response([200]);
	}

	public function reportAction(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);
		abort_if(!in_array($group->selfRole($pid), ['founder', 'admin']), 404);

		$this->validate($request, [
			'action' => 'required|in:cw,delete,ignore',
			'id' => 'required|string'
		]);

		$action = $request->input('action');
		$id = $request->input('id');

		$report = GroupReport::whereGroupId($group->id)
			->findOrFail($id);
		$status = Status::findOrFail($report->item_id);
		$gp = GroupPost::whereGroupId($group->id)
			->whereStatusId($status->id)
			->firstOrFail();

		switch ($action) {
			case 'cw':
				$status->is_nsfw = true;
				$status->save();
				StatusService::del($status->id);

				GroupReport::whereGroupId($group->id)
					->whereItemType($report->item_type)
					->whereItemId($report->item_id)
					->update(['open' => false]);

				GroupService::log(
					$group->id,
					$pid,
					'group:moderation:action',
					[
						'type' => 'cw',
						'report_id' => $report->id,
						'status_id' => $status->id,
						'profile_id' => $status->profile_id,
						'status_url' => $gp->url()
					],
					GroupReport::class,
					$report->id
				);
				return response()->json([200]);
			break;

			case 'ignore':
				GroupReport::whereGroupId($group->id)
					->whereItemType($report->item_type)
					->whereItemId($report->item_id)
					->update(['open' => false]);

				GroupService::log(
					$group->id,
					$pid,
					'group:moderation:action',
					[
						'type' => 'ignore',
						'report_id' => $report->id,
						'status_id' => $status->id,
						'profile_id' => $status->profile_id,
						'status_url' => $gp->url()
					],
					GroupReport::class,
					$report->id
				);
				return response()->json([200]);
			break;
		}
	}

	public function getMemberInteractionLimits(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);
		abort_if(!in_array($group->selfRole($pid), ['founder', 'admin']), 404);

		$profile_id = $request->input('profile_id');
		abort_if(!$group->isMember($profile_id), 404);
		$limits = GroupService::getInteractionLimits($group->id, $profile_id);
		return response()->json($limits);
	}

	public function updateMemberInteractionLimits(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$group = Group::findOrFail($id);
		$pid = $request->user()->profile_id;
		abort_if(!$group->isMember($pid), 404);
		abort_if(!in_array($group->selfRole($pid), ['founder', 'admin']), 404);

		$this->validate($request, [
			'profile_id' => 'required|exists:profiles,id',
			'can_post' => 'required',
			'can_comment' => 'required',
			'can_like' => 'required'
		]);

		$member = $request->input('profile_id');
		$can_post = $request->input('can_post');
		$can_comment = $request->input('can_comment');
		$can_like = $request->input('can_like');
		$account = AccountService::get($member);

		abort_if(!$account, 422, 'Invalid profile');
		abort_if(!$group->isMember($member), 422, 'Invalid profile');

		$limit = GroupLimit::firstOrCreate([
			'profile_id' => $member,
			'group_id' => $group->id
		]);

		if($limit->wasRecentlyCreated) {
			abort_if(GroupLimit::whereGroupId($group->id)->count() >= 25, 422, 'limit_reached');
		}

		$previousLimits = $limit->limits;

		$limit->limits = [
			'can_post' => $can_post,
			'can_comment' => $can_comment,
			'can_like' => $can_like
		];
		$limit->save();

		GroupService::clearInteractionLimits($group->id, $member);

		GroupService::log(
			$group->id,
			$pid,
			'group:member-limits:updated',
			[
				'profile_id' => $account['id'],
				'username' => $account['username'],
				'previousLimits' => $previousLimits,
				'newLimits' => $limit->limits
			],
			GroupLimit::class,
			$limit->id
		);

		return $request->all();
	}


	public function showProfile(Request $request, $id, $pid)
	{
		$group = Group::find($id);

		if(!$group || $group->status) {
			return response()->view('groups.unavailable')->setStatusCode(404);
		}

		return view('layouts.spa');
	}

	public function showProfileByUsername(Request $request, $id, $pid)
	{
		abort_if(!$request->user(), 404);
		if(!$request->user()) {
			return redirect("/{$pid}");
		}

		$group = Group::find($id);
		$cid = $request->user()->profile_id;

		if(!$group || $group->status) {
			return response()->view('groups.unavailable')->setStatusCode(404);
		}

		if(!$group->isMember($cid)) {
			return redirect("/{$pid}");
		}

		$profile = Profile::whereUsername($pid)->first();

		if(!$group->isMember($profile->id)) {
			return redirect("/{$pid}");
		}

		if($profile) {
			$url = url("/groups/{$id}/user/{$profile->id}");
			return redirect($url);
		}

		abort(404, 'Invalid username');
	}


	public function groupInviteLanding(Request $request, $id)
	{
		abort(404, 'Not yet implemented');
		$group = Group::findOrFail($id);
		return view('groups.invite', compact('group'));
	}

	public function groupShortLinkRedirect(Request $request, $hid)
	{
		$gid = HashidService::decode($hid);
		$group = Group::findOrFail($gid);
		return redirect($group->url());
	}

	public function groupInviteClaim(Request $request, $id)
	{
		$group = GroupService::get($id);
		abort_if(!$group || empty($group), 404);
		return view('groups.invite-claim', compact('group'));
	}

	public function groupMemberInviteCheck(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$pid = $request->user()->profile_id;
		$group = Group::findOrFail($id);
		abort_if($group->isMember($pid), 422, 'Already a member');

		$exists = GroupInvitation::whereGroupId($id)->whereToProfileId($pid)->exists();

		return response()->json([
			'gid' => $id,
			'can_join' => (bool) $exists
		]);
	}

	public function groupMemberInviteAccept(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$pid = $request->user()->profile_id;
		$group = Group::findOrFail($id);
		abort_if($group->isMember($pid), 422, 'Already a member');

		abort_if(!GroupInvitation::whereGroupId($id)->whereToProfileId($pid)->exists(), 422);

		$gm = new GroupMember;
		$gm->group_id = $id;
		$gm->profile_id = $pid;
		$gm->role = 'member';
		$gm->local_group = $group->local;
		$gm->local_profile = true;
		$gm->join_request = false;
		$gm->save();

		GroupInvitation::whereGroupId($id)->whereToProfileId($pid)->delete();
		GroupService::del($id);
		GroupService::delSelf($id, $pid);

		return ['next_url' => $group->url()];
	}

	public function groupMemberInviteDecline(Request $request, $id)
	{
		abort_if(!$request->user(), 404);
		$pid = $request->user()->profile_id;
		$group = Group::findOrFail($id);
		abort_if($group->isMember($pid), 422, 'Already a member');
		return ['next_url' => '/'];
	}
}