<?php

namespace App\Http\Controllers\Admin;

use Cache;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Redis;
use App\Services\AccountService;
use App\Services\StatusService;
use App\{
	AccountInterstitial,
	Contact,
	Hashtag,
	Newsroom,
	OauthClient,
	Profile,
	Report,
	Status,
	Story,
	User
};
use Illuminate\Validation\Rule;
use App\Services\StoryService;
use App\Services\ModLogService;
use App\Jobs\DeletePipeline\DeleteAccountPipeline;

trait AdminReportController
{
	public function reports(Request $request)
	{
		$filter = $request->input('filter') == 'closed' ? 'closed' : 'open';
		$page = $request->input('page') ?? 1;

		$ai = Cache::remember('admin-dash:reports:ai-count', 3600, function() {
			return AccountInterstitial::whereNotNull('appeal_requested_at')->whereNull('appeal_handled_at')->count();
		});

		$spam = Cache::remember('admin-dash:reports:spam-count', 3600, function() {
			return AccountInterstitial::whereType('post.autospam')->whereNull('appeal_handled_at')->count();
		});

		$mailVerifications = Redis::scard('email:manual');

		if($filter == 'open' && $page == 1) {
			$reports = Cache::remember('admin-dash:reports:list-cache', 300, function() use($page, $filter) {
				return Report::whereHas('status')
					->whereHas('reportedUser')
					->whereHas('reporter')
					->orderBy('created_at','desc')
					->when($filter, function($q, $filter) {
						return $filter == 'open' ?
						$q->whereNull('admin_seen') :
						$q->whereNotNull('admin_seen');
					})
					->paginate(6);
			});
		} else {
			$reports = Report::whereHas('status')
			->whereHas('reportedUser')
			->whereHas('reporter')
			->orderBy('created_at','desc')
			->when($filter, function($q, $filter) {
				return $filter == 'open' ?
				$q->whereNull('admin_seen') :
				$q->whereNotNull('admin_seen');
			})
			->paginate(6);
		}

		return view('admin.reports.home', compact('reports', 'ai', 'spam', 'mailVerifications'));
	}

	public function showReport(Request $request, $id)
	{
		$report = Report::findOrFail($id);
		return view('admin.reports.show', compact('report'));
	}

	public function appeals(Request $request)
	{
		$appeals = AccountInterstitial::whereNotNull('appeal_requested_at')
			->whereNull('appeal_handled_at')
			->latest()
			->paginate(6);
		return view('admin.reports.appeals', compact('appeals'));
	}

	public function showAppeal(Request $request, $id)
	{
		$appeal = AccountInterstitial::whereNotNull('appeal_requested_at')
			->whereNull('appeal_handled_at')
			->findOrFail($id);
		$meta = json_decode($appeal->meta);
		return view('admin.reports.show_appeal', compact('appeal', 'meta'));
	}

	public function spam(Request $request)
	{
		$this->validate($request, [
			'tab' => 'sometimes|in:home,not-spam,spam,settings,custom,exemptions'
		]);

		$tab = $request->input('tab', 'home');

		$openCount = Cache::remember('admin-dash:reports:spam-count', 3600, function() {
			return AccountInterstitial::whereType('post.autospam')
				->whereNull('appeal_handled_at')
				->count();
		});

		$monthlyCount = Cache::remember('admin-dash:reports:spam-count:30d', 43200, function() {
			return AccountInterstitial::whereType('post.autospam')
				->where('created_at', '>', now()->subMonth())
				->count();
		});

		$totalCount = Cache::remember('admin-dash:reports:spam-count:total', 43200, function() {
			return AccountInterstitial::whereType('post.autospam')->count();
		});

		$uncategorized = Cache::remember('admin-dash:reports:spam-sync', 3600, function() {
			return AccountInterstitial::whereType('post.autospam')
				->whereIsSpam(null)
				->whereNotNull('appeal_handled_at')
				->exists();
		});

		$avg = Cache::remember('admin-dash:reports:spam-count:avg', 43200, function() {
			if(config('database.default') != 'mysql') {
				return 0;
			}
			return AccountInterstitial::selectRaw('*, count(id) as counter')
				->whereType('post.autospam')
				->groupBy('user_id')
				->get()
				->avg('counter');
		});

		$avgOpen = Cache::remember('admin-dash:reports:spam-count:avgopen', 43200, function() {
			if(config('database.default') != 'mysql') {
				return "0";
			}
			$seconds = AccountInterstitial::selectRaw('DATE(created_at) AS start_date, AVG(TIME_TO_SEC(TIMEDIFF(appeal_handled_at, created_at))) AS timediff')->whereType('post.autospam')->whereNotNull('appeal_handled_at')->where('created_at', '>', now()->subMonth())->get();
			if(!$seconds) {
				return "0";
			}
			$mins = floor($seconds->avg('timediff') / 60);

			if($mins < 60) {
				return $mins . ' min(s)';
			}

			if($mins < 2880) {
				return floor($mins / 60) . ' hour(s)';
			}

			return floor($mins / 60 / 24) . ' day(s)';
		});
		$avgCount = $totalCount && $avg ? floor($totalCount / $avg) : "0";

		if(in_array($tab, ['home', 'spam', 'not-spam'])) {
			$appeals = AccountInterstitial::whereType('post.autospam')
				->when($tab, function($q, $tab) {
					switch($tab) {
						case 'home':
							return $q->whereNull('appeal_handled_at');
						break;
						case 'spam':
							return $q->whereIsSpam(true);
						break;
						case 'not-spam':
							return $q->whereIsSpam(false);
						break;
					}
				})
				->latest()
				->paginate(6);

			if($tab !== 'home') {
				$appeals = $appeals->appends(['tab' => $tab]);
			}
		} else {
			$appeals = new class {
				public function count() {
					return 0;
				}

				public function render() {
					return;
				}
			};
		}


		return view('admin.reports.spam', compact('tab', 'appeals', 'openCount', 'monthlyCount', 'totalCount', 'avgCount', 'avgOpen', 'uncategorized'));
	}

	public function showSpam(Request $request, $id)
	{
		$appeal = AccountInterstitial::whereType('post.autospam')
			->findOrFail($id);
		$meta = json_decode($appeal->meta);
		return view('admin.reports.show_spam', compact('appeal', 'meta'));
	}

	public function fixUncategorizedSpam(Request $request)
	{
		if(Cache::get('admin-dash:reports:spam-sync-active')) {
			return redirect('/i/admin/reports/autospam');
		}

		Cache::put('admin-dash:reports:spam-sync-active', 1, 900);

		AccountInterstitial::chunk(500, function($reports) {
			foreach($reports as $report) {
				if($report->item_type != 'App\Status') {
					continue;
				}

				if($report->type != 'post.autospam') {
					continue;
				}

				if($report->is_spam != null) {
					continue;
				}

				$status = StatusService::get($report->item_id, false);
				if(!$status) {
					return;
				}
				$scope = $status['visibility'];
				$report->is_spam = $scope == 'unlisted';
				$report->in_violation = $report->is_spam;
				$report->severity_index = 1;
				$report->save();
			}
		});

		Cache::forget('admin-dash:reports:spam-sync');
		return redirect('/i/admin/reports/autospam');
	}

	public function updateSpam(Request $request, $id)
	{
		$this->validate($request, [
			'action' => 'required|in:dismiss,approve,dismiss-all,approve-all,delete-account'
		]);

		$action = $request->input('action');
		$appeal = AccountInterstitial::whereType('post.autospam')
			->whereNull('appeal_handled_at')
			->findOrFail($id);

		$meta = json_decode($appeal->meta);
		$res = ['status' => 'success'];
		$now = now();
		Cache::forget('admin-dash:reports:spam-count:total');
		Cache::forget('admin-dash:reports:spam-count:30d');

		if($action == 'delete-account') {
			if(config('pixelfed.account_deletion') == false) {
				abort(404);
			}

			$user = User::findOrFail($appeal->user_id);
			$profile = $user->profile;

			if($user->is_admin == true) {
				$mid = $request->user()->id;
				abort_if($user->id < $mid, 403);
			}

			$ts = now()->addMonth();
			$user->status = 'delete';
			$profile->status = 'delete';
			$user->delete_after = $ts;
			$profile->delete_after = $ts;
			$user->save();
			$profile->save();

			ModLogService::boot()
				->objectUid($user->id)
				->objectId($user->id)
				->objectType('App\User::class')
				->user($request->user())
				->action('admin.user.delete')
				->accessLevel('admin')
				->save();

			Cache::forget('profiles:private');
			DeleteAccountPipeline::dispatch($user)->onQueue('high');
			return;
		}

		if($action == 'dismiss') {
			$appeal->is_spam = true;
			$appeal->appeal_handled_at = $now;
			$appeal->save();

			Cache::forget('pf:bouncer_v0:exemption_by_pid:' . $appeal->user->profile_id);
			Cache::forget('pf:bouncer_v0:recent_by_pid:' . $appeal->user->profile_id);
			Cache::forget('admin-dash:reports:spam-count');
			return $res;
		}

		if($action == 'dismiss-all') {
			AccountInterstitial::whereType('post.autospam')
				->whereItemType('App\Status')
				->whereNull('appeal_handled_at')
				->whereUserId($appeal->user_id)
				->update(['appeal_handled_at' => $now, 'is_spam' => true]);
			Cache::forget('pf:bouncer_v0:exemption_by_pid:' . $appeal->user->profile_id);
			Cache::forget('pf:bouncer_v0:recent_by_pid:' . $appeal->user->profile_id);
			Cache::forget('admin-dash:reports:spam-count');
			return $res;
		}

		if($action == 'approve-all') {
			AccountInterstitial::whereType('post.autospam')
				->whereItemType('App\Status')
				->whereNull('appeal_handled_at')
				->whereUserId($appeal->user_id)
				->get()
				->each(function($report) use($meta) {
					$report->is_spam = false;
					$report->appeal_handled_at = now();
					$report->save();
					$status = Status::find($report->item_id);
					if($status) {
						$status->is_nsfw = $meta->is_nsfw;
						$status->scope = 'public';
						$status->visibility = 'public';
						$status->save();
						StatusService::del($status->id, true);
					}
				});
			Cache::forget('pf:bouncer_v0:exemption_by_pid:' . $appeal->user->profile_id);
			Cache::forget('pf:bouncer_v0:recent_by_pid:' . $appeal->user->profile_id);
			Cache::forget('admin-dash:reports:spam-count');
			return $res;
		}

		$status = $appeal->status;
		$status->is_nsfw = $meta->is_nsfw;
		$status->scope = 'public';
		$status->visibility = 'public';
		$status->save();

		$appeal->is_spam = false;
		$appeal->appeal_handled_at = now();
		$appeal->save();

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

		Cache::forget('pf:bouncer_v0:exemption_by_pid:' . $appeal->user->profile_id);
		Cache::forget('pf:bouncer_v0:recent_by_pid:' . $appeal->user->profile_id);
		Cache::forget('admin-dash:reports:spam-count');

		return $res;
	}

	public function updateAppeal(Request $request, $id)
	{
		$this->validate($request, [
			'action' => 'required|in:dismiss,approve'
		]);

		$action = $request->input('action');
		$appeal = AccountInterstitial::whereNotNull('appeal_requested_at')
			->whereNull('appeal_handled_at')
			->findOrFail($id);

		if($action == 'dismiss') {
			$appeal->appeal_handled_at = now();
			$appeal->save();
			Cache::forget('admin-dash:reports:ai-count');
			return redirect('/i/admin/reports/appeals');
		}

		switch ($appeal->type) {
			case 'post.cw':
				$status = $appeal->status;
				$status->is_nsfw = false;
				$status->save();
				break;

			case 'post.unlist':
				$status = $appeal->status;
				$status->scope = 'public';
				$status->visibility = 'public';
				$status->save();
				break;

			default:
				# code...
				break;
		}

		$appeal->appeal_handled_at = now();
		$appeal->save();
		StatusService::del($status->id, true);
		Cache::forget('admin-dash:reports:ai-count');

		return redirect('/i/admin/reports/appeals');
	}

    public function updateReport(Request $request, $id)
    {
        $this->validate($request, [
            'action'	=> 'required|string',
        ]);

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

        $actions = [
            'ignore',
            'cw',
            'unlist',
            'delete',
            'shadowban',
            'ban',
        ];

        if (!in_array($action, $actions)) {
            return abort(403);
        }

        $report = Report::findOrFail($id);

        $this->handleReportAction($report, $action);
        Cache::forget('admin-dash:reports:list-cache');

        return response()->json(['msg'=> 'Success']);
    }

    public function handleReportAction(Report $report, $action)
    {
        $item = $report->reported();
        $report->admin_seen = Carbon::now();

        switch ($action) {
            case 'ignore':
                $report->not_interested = true;
                break;

            case 'cw':
                Cache::forget('status:thumb:'.$item->id);
                $item->is_nsfw = true;
                $item->save();
                $report->nsfw = true;
                StatusService::del($item->id, true);
                break;

            case 'unlist':
                $item->visibility = 'unlisted';
                $item->save();
                Cache::forget('profiles:private');
                StatusService::del($item->id, true);
                break;

            case 'delete':
                // Todo: fire delete job
                $report->admin_seen = null;
                StatusService::del($item->id, true);
                break;

            case 'shadowban':
                // Todo: fire delete job
                $report->admin_seen = null;
                break;

            case 'ban':
                // Todo: fire delete job
                $report->admin_seen = null;
                break;

            default:
                $report->admin_seen = null;
                break;
        }

        $report->save();

        return $this;
    }

    protected function actionMap()
    {
        return [
            '1' => 'ignore',
            '2' => 'cw',
            '3' => 'unlist',
            '4' => 'delete',
            '5' => 'shadowban',
            '6' => 'ban'
        ];
    }

    public function bulkUpdateReport(Request $request)
    {
        $this->validate($request, [
            'action' => 'required|integer|min:1|max:10',
            'ids'    => 'required|array'
        ]);
        $action = $this->actionMap()[$request->input('action')];
        $ids = $request->input('ids');
        $reports = Report::whereIn('id', $ids)->whereNull('admin_seen')->get();
        foreach($reports as $report) {
            $this->handleReportAction($report, $action);
        }
        $res = [
            'message' => 'Success',
            'code'    => 200
        ];
        return response()->json($res);
    }

    public function reportMailVerifications(Request $request)
    {
    	$ids = Redis::smembers('email:manual');
    	$ignored = Redis::smembers('email:manual-ignored');
    	$reports = [];
    	if($ids) {
			$reports = collect($ids)
				->filter(function($id) use($ignored) {
					return !in_array($id, $ignored);
				})
				->map(function($id) {
					$account = AccountService::get($id);
					$user = User::whereProfileId($id)->first();
					if(!$user) {
						return [];
					}
					$account['email'] = $user->email;
					return $account;
				})
				->filter(function($res) {
					return $res && isset($res['id']);
				})
				->values();
    	}
    	return view('admin.reports.mail_verification', compact('reports', 'ignored'));
    }

    public function reportMailVerifyIgnore(Request $request)
    {
    	$id = $request->input('id');
    	Redis::sadd('email:manual-ignored', $id);
    	return redirect('/i/admin/reports');
    }

    public function reportMailVerifyApprove(Request $request)
    {
    	$id = $request->input('id');
    	$user = User::whereProfileId($id)->firstOrFail();
    	Redis::srem('email:manual', $id);
    	Redis::srem('email:manual-ignored', $id);
    	$user->email_verified_at = now();
    	$user->save();
    	return redirect('/i/admin/reports');
    }

    public function reportMailVerifyClearIgnored(Request $request)
    {
    	Redis::del('email:manual-ignored');
    	return [200];
    }
}