<?php

namespace App\Http\Controllers;

use App\Contact;
use App\Http\Controllers\Admin\AdminAutospamController;
use App\Http\Controllers\Admin\AdminDirectoryController;
use App\Http\Controllers\Admin\AdminDiscoverController;
use App\Http\Controllers\Admin\AdminHashtagsController;
use App\Http\Controllers\Admin\AdminInstanceController;
use App\Http\Controllers\Admin\AdminMediaController;
use App\Http\Controllers\Admin\AdminReportController;
use App\Http\Controllers\Admin\AdminSettingsController;
use App\Http\Controllers\Admin\AdminUserController;
use App\Instance;
use App\Models\CustomEmoji;
use App\Newsroom;
use App\OauthClient;
use App\Profile;
use App\Services\AccountService;
use App\Services\AdminStatsService;
use App\Services\ConfigCacheService;
use App\Services\StatusService;
use App\Services\StoryService;
use App\Status;
use App\Story;
use App\User;
use Cache;
use DB;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Storage;

class AdminController extends Controller
{
    use AdminAutospamController,
        AdminDirectoryController,
        AdminDiscoverController,
        AdminHashtagsController,
        AdminInstanceController,
        AdminMediaController,
        AdminReportController,
        AdminSettingsController,
        AdminUserController;

    public function __construct()
    {
        $this->middleware('admin');
        $this->middleware('dangerzone');
        $this->middleware('twofactor');
    }

    public function home()
    {
        return view('admin.home');
    }

    public function customCss()
    {
        return view('admin.settings.customcss');
    }

    public function saveCustomCss(Request $request)
    {
        $this->validate($request, [
            'css' => 'sometimes|max:5000',
            'show' => 'sometimes',
        ]);
        ConfigCacheService::put('uikit.custom.css', $request->input('css'));
        ConfigCacheService::put('uikit.show_custom.css', $request->boolean('show'));

        return view('admin.settings.customcss');
    }

    public function stats()
    {
        $data = AdminStatsService::get();

        return view('admin.stats', compact('data'));
    }

    public function getStats()
    {
        return AdminStatsService::summary();
    }

    public function getAccounts()
    {
        $users = User::orderByDesc('id')->cursorPaginate(10);

        $res = [
            'next_page_url' => $users->nextPageUrl(),
            'data' => $users->map(function ($user) {
                $account = AccountService::get($user->profile_id, true);
                if (! $account) {
                    return [
                        'id' => $user->profile_id,
                        'username' => $user->username,
                        'status' => 'deleted',
                        'avatar' => '/storage/avatars/default.jpg',
                        'created_at' => $user->created_at,
                    ];
                }
                $account['user_id'] = $user->id;

                return $account;
            })
                ->filter(function ($user) {
                    return $user;
                }),
        ];

        return $res;
    }

    public function getPosts()
    {
        $posts = DB::table('statuses')
            ->orderByDesc('id')
            ->cursorPaginate(10);

        $res = [
            'next_page_url' => $posts->nextPageUrl(),
            'data' => $posts->map(function ($post) {
                $status = StatusService::get($post->id, false);
                if (! $status) {
                    return ['id' => $post->id, 'created_at' => $post->created_at];
                }

                return $status;
            }),
        ];

        return $res;
    }

    public function getInstances()
    {
        return Instance::orderByDesc('id')->cursorPaginate(10);
    }

    public function statuses(Request $request)
    {
        $statuses = Status::orderBy('id', 'desc')->cursorPaginate(10);
        $data = $statuses->map(function ($status) {
            return StatusService::get($status->id, false);
        })
            ->filter(function ($s) {
                return $s;
            })
            ->toArray();

        return view('admin.statuses.home', compact('statuses', 'data'));
    }

    public function showStatus(Request $request, $id)
    {
        $status = Status::findOrFail($id);

        return view('admin.statuses.show', compact('status'));
    }

    public function profiles(Request $request)
    {
        $this->validate($request, [
            'search' => 'nullable|string|max:250',
            'filter' => [
                'nullable',
                'string',
                Rule::in(['all', 'local', 'remote']),
            ],
        ]);
        $search = $request->input('search');
        $filter = $request->input('filter');
        $limit = 12;
        $profiles = Profile::select('id', 'username')
            ->whereNull('status')
            ->when($search, function ($q, $search) {
                return $q->where('username', 'like', "%$search%");
            })->when($filter, function ($q, $filter) {
                if ($filter == 'local') {
                    return $q->whereNull('domain');
                }
                if ($filter == 'remote') {
                    return $q->whereNotNull('domain');
                }

                return $q;
            })->orderByDesc('id')
            ->simplePaginate($limit);

        return view('admin.profiles.home', compact('profiles'));
    }

    public function profileShow(Request $request, $id)
    {
        $profile = Profile::findOrFail($id);
        $user = $profile->user;

        return view('admin.profiles.edit', compact('profile', 'user'));
    }

    public function appsHome(Request $request)
    {
        $filter = $request->input('filter');
        if ($filter == 'revoked') {
            $apps = OauthClient::with('user')
                ->whereNotNull('user_id')
                ->whereRevoked(true)
                ->orderByDesc('id')
                ->paginate(10);
        } else {
            $apps = OauthClient::with('user')
                ->whereNotNull('user_id')
                ->orderByDesc('id')
                ->paginate(10);
        }

        return view('admin.apps.home', compact('apps'));
    }

    public function messagesHome(Request $request)
    {
        $messages = Contact::orderByDesc('id')->paginate(10);

        return view('admin.messages.home', compact('messages'));
    }

    public function messagesShow(Request $request, $id)
    {
        $message = Contact::findOrFail($id);

        return view('admin.messages.show', compact('message'));
    }

    public function messagesMarkRead(Request $request)
    {
        $this->validate($request, [
            'id' => 'required|integer|min:1',
        ]);
        $id = $request->input('id');
        $message = Contact::findOrFail($id);
        if ($message->read_at) {
            return;
        }
        $message->read_at = now();
        $message->save();

    }

    public function newsroomHome(Request $request)
    {
        $newsroom = Newsroom::latest()->paginate(10);

        return view('admin.newsroom.home', compact('newsroom'));
    }

    public function newsroomCreate(Request $request)
    {
        return view('admin.newsroom.create');
    }

    public function newsroomEdit(Request $request, $id)
    {
        $news = Newsroom::findOrFail($id);

        return view('admin.newsroom.edit', compact('news'));
    }

    public function newsroomDelete(Request $request, $id)
    {
        $news = Newsroom::findOrFail($id);
        $news->delete();

        return redirect('/i/admin/newsroom');
    }

    public function newsroomUpdate(Request $request, $id)
    {
        $this->validate($request, [
            'title' => 'required|string|min:1|max:100',
            'summary' => 'nullable|string|max:200',
            'body' => 'nullable|string',
        ]);
        $changed = false;
        $changedFields = [];
        $slug = str_slug($request->input('title'));
        if (Newsroom::whereSlug($slug)->exists()) {
            $slug = $slug.'-'.str_random(4);
        }
        $news = Newsroom::findOrFail($id);
        $fields = [
            'title' => 'string',
            'summary' => 'string',
            'body' => 'string',
            'category' => 'string',
            'show_timeline' => 'boolean',
            'auth_only' => 'boolean',
            'show_link' => 'boolean',
            'force_modal' => 'boolean',
            'published' => 'published',
        ];
        foreach ($fields as $field => $type) {
            switch ($type) {
                case 'string':
                    if ($request->{$field} != $news->{$field}) {
                        if ($field == 'title') {
                            $news->slug = $slug;
                        }
                        $news->{$field} = $request->{$field};
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;

                case 'boolean':
                    $state = $request->{$field} == 'on' ? true : false;
                    if ($state != $news->{$field}) {
                        $news->{$field} = $state;
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;
                case 'published':
                    $state = $request->{$field} == 'on' ? true : false;
                    $published = $news->published_at != null;
                    if ($state != $published) {
                        $news->published_at = $state ? now() : null;
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;

            }
        }

        if ($changed) {
            $news->save();
        }
        $redirect = $news->published_at ? $news->permalink() : $news->editUrl();

        return redirect($redirect);
    }

    public function newsroomStore(Request $request)
    {
        $this->validate($request, [
            'title' => 'required|string|min:1|max:100',
            'summary' => 'nullable|string|max:200',
            'body' => 'nullable|string',
        ]);
        $changed = false;
        $changedFields = [];
        $slug = str_slug($request->input('title'));
        if (Newsroom::whereSlug($slug)->exists()) {
            $slug = $slug.'-'.str_random(4);
        }
        $news = new Newsroom();
        $fields = [
            'title' => 'string',
            'summary' => 'string',
            'body' => 'string',
            'category' => 'string',
            'show_timeline' => 'boolean',
            'auth_only' => 'boolean',
            'show_link' => 'boolean',
            'force_modal' => 'boolean',
            'published' => 'published',
        ];
        foreach ($fields as $field => $type) {
            switch ($type) {
                case 'string':
                    if ($request->{$field} != $news->{$field}) {
                        if ($field == 'title') {
                            $news->slug = $slug;
                        }
                        $news->{$field} = $request->{$field};
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;

                case 'boolean':
                    $state = $request->{$field} == 'on' ? true : false;
                    if ($state != $news->{$field}) {
                        $news->{$field} = $state;
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;
                case 'published':
                    $state = $request->{$field} == 'on' ? true : false;
                    $published = $news->published_at != null;
                    if ($state != $published) {
                        $news->published_at = $state ? now() : null;
                        $changed = true;
                        array_push($changedFields, $field);
                    }
                    break;

            }
        }

        if ($changed) {
            $news->save();
        }
        $redirect = $news->published_at ? $news->permalink() : $news->editUrl();

        return redirect($redirect);
    }

    public function diagnosticsHome(Request $request)
    {
        return view('admin.diagnostics.home');
    }

    public function diagnosticsDecrypt(Request $request)
    {
        $this->validate($request, [
            'payload' => 'required',
        ]);

        $key = 'exception_report:';
        $decrypted = decrypt($request->input('payload'));

        if (! starts_with($decrypted, $key)) {
            abort(403, 'Can only decrypt error diagnostics');
        }

        $res = [
            'decrypted' => substr($decrypted, strlen($key)),
        ];

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

    public function stories(Request $request)
    {
        $stories = Story::with('profile')->latest()->paginate(10);
        $stats = StoryService::adminStats();

        return view('admin.stories.home', compact('stories', 'stats'));
    }

    public function customEmojiHome(Request $request)
    {
        if (! (bool) config_cache('federation.custom_emoji.enabled')) {
            return view('admin.custom-emoji.not-enabled');
        }
        $this->validate($request, [
            'sort' => 'sometimes|in:all,local,remote,duplicates,disabled,search',
        ]);

        if ($request->has('cc')) {
            Cache::forget('pf:admin:custom_emoji:stats');
            Cache::forget('pf:custom_emoji');

            return redirect(route('admin.custom-emoji'));
        }

        $sort = $request->input('sort') ?? 'all';

        if ($sort == 'search' && empty($request->input('q'))) {
            return redirect(route('admin.custom-emoji'));
        }

        $pg = config('database.default') == 'pgsql';

        $emojis = CustomEmoji::when($sort, function ($query, $sort) use ($request, $pg) {
            if ($sort == 'all') {
                if ($pg) {
                    return $query->latest();
                } else {
                    return $query->groupBy('shortcode')->latest();
                }
            } elseif ($sort == 'local') {
                return $query->latest()->where('domain', '=', config('pixelfed.domain.app'));
            } elseif ($sort == 'remote') {
                return $query->latest()->where('domain', '!=', config('pixelfed.domain.app'));
            } elseif ($sort == 'duplicates') {
                return $query->latest()->groupBy('shortcode')->havingRaw('count(*) > 1');
            } elseif ($sort == 'disabled') {
                return $query->latest()->whereDisabled(true);
            } elseif ($sort == 'search') {
                $q = $query
                    ->latest()
                    ->where('shortcode', 'like', '%'.$request->input('q').'%')
                    ->orWhere('domain', 'like', '%'.$request->input('q').'%');
                if (! $request->has('dups')) {
                    if (! $pg) {
                        $q = $q->groupBy('shortcode');
                    }
                }

                return $q;
            }
        })
            ->simplePaginate(10)
            ->withQueryString();

        $stats = Cache::remember('pf:admin:custom_emoji:stats', 43200, function () use ($pg) {
            $res = [
                'total' => CustomEmoji::count(),
                'active' => CustomEmoji::whereDisabled(false)->count(),
                'remote' => CustomEmoji::where('domain', '!=', config('pixelfed.domain.app'))->count(),
            ];

            if ($pg) {
                $res['duplicate'] = CustomEmoji::select('shortcode')->groupBy('shortcode')->havingRaw('count(*) > 1')->count();
            } else {
                $res['duplicate'] = CustomEmoji::groupBy('shortcode')->havingRaw('count(*) > 1')->count();
            }

            return $res;
        });

        return view('admin.custom-emoji.home', compact('emojis', 'sort', 'stats'));
    }

    public function customEmojiToggleActive(Request $request, $id)
    {
        abort_unless((bool) config_cache('federation.custom_emoji.enabled'), 404);
        $emoji = CustomEmoji::findOrFail($id);
        $emoji->disabled = ! $emoji->disabled;
        $emoji->save();
        $key = CustomEmoji::CACHE_KEY.str_replace(':', '', $emoji->shortcode);
        Cache::forget($key);

        return redirect()->back();
    }

    public function customEmojiAdd(Request $request)
    {
        abort_unless((bool) config_cache('federation.custom_emoji.enabled'), 404);

        return view('admin.custom-emoji.add');
    }

    public function customEmojiStore(Request $request)
    {
        abort_unless((bool) config_cache('federation.custom_emoji.enabled'), 404);
        $this->validate($request, [
            'shortcode' => [
                'required',
                'min:3',
                'max:80',
                'starts_with::',
                'ends_with::',
                Rule::unique('custom_emoji')->where(function ($query) use ($request) {
                    return $query->whereDomain(config('pixelfed.domain.app'))
                        ->whereShortcode($request->input('shortcode'));
                }),
            ],
            'emoji' => 'required|file|mimes:jpg,png|max:'.(config('federation.custom_emoji.max_size') / 1000),
        ]);

        $emoji = new CustomEmoji;
        $emoji->shortcode = $request->input('shortcode');
        $emoji->domain = config('pixelfed.domain.app');
        $emoji->save();

        $fileName = $emoji->id.'.'.$request->emoji->extension();
        $request->emoji->storePubliclyAs('public/emoji', $fileName);
        $emoji->media_path = 'emoji/'.$fileName;
        $emoji->save();
        Cache::forget('pf:custom_emoji');

        return redirect(route('admin.custom-emoji'));
    }

    public function customEmojiDelete(Request $request, $id)
    {
        abort_unless((bool) config_cache('federation.custom_emoji.enabled'), 404);
        $emoji = CustomEmoji::findOrFail($id);
        Storage::delete("public/{$emoji->media_path}");
        Cache::forget('pf:custom_emoji');
        $emoji->delete();

        return redirect(route('admin.custom-emoji'));
    }

    public function customEmojiShowDuplicates(Request $request, $id)
    {
        abort_unless((bool) config_cache('federation.custom_emoji.enabled'), 404);
        $emoji = CustomEmoji::orderBy('id')->whereDisabled(false)->whereShortcode($id)->firstOrFail();
        $emojis = CustomEmoji::whereShortcode($id)->where('id', '!=', $emoji->id)->cursorPaginate(10);

        return view('admin.custom-emoji.duplicates', compact('emoji', 'emojis'));
    }
}