<?php
namespace Misuzu;

use Misuzu\Template;
use Misuzu\Auth\LoginAttempts;
use Misuzu\Auth\RecoveryTokens;
use Misuzu\AuditLog\AuditLog;
use Misuzu\Changelog\Changelog;
use Misuzu\Comments\Comments;
use Misuzu\Config\IConfig;
use Misuzu\Emoticons\Emotes;
use Misuzu\News\News;
use Misuzu\SharpChat\SharpChatRoutes;
use Misuzu\Users\Bans;
use Misuzu\Users\BanInfo;
use Misuzu\Users\ModNotes;
use Misuzu\Users\User;
use Misuzu\Users\Warnings;
use Index\Data\IDbConnection;
use Index\Data\Migration\IDbMigrationRepo;
use Index\Data\Migration\DbMigrationManager;
use Index\Data\Migration\FsDbMigrationRepo;
use Index\Http\HttpFx;
use Index\Http\HttpRequest;
use Index\Routing\Router;

// this class should function as the root for everything going forward
// no more magical static classes that are just kind of assumed to exist
// it currently looks Pretty Messy, but most everything else will be holding instances of other classes
// instances of certain classes should only be made as needed,
//  dunno if i want null checks some maybe some kind of init func should be called first like is the case
//  with the http shit
class MisuzuContext {
    private IDbConnection $dbConn;
    private IConfig $config;
    private HttpFx $router;
    private AuditLog $auditLog;
    private Emotes $emotes;
    private Changelog $changelog;
    private News $news;
    private Comments $comments;
    private LoginAttempts $loginAttempts;
    private RecoveryTokens $recoveryTokens;
    private ModNotes $modNotes;
    private Bans $bans;
    private Warnings $warnings;

    public function __construct(IDbConnection $dbConn, IConfig $config) {
        $this->dbConn = $dbConn;
        $this->config = $config;
        $this->auditLog = new AuditLog($this->dbConn);
        $this->emotes = new Emotes($this->dbConn);
        $this->changelog = new Changelog($this->dbConn);
        $this->news = new News($this->dbConn);
        $this->comments = new Comments($this->dbConn);
        $this->loginAttempts = new LoginAttempts($this->dbConn);
        $this->recoveryTokens = new RecoveryTokens($this->dbConn);
        $this->modNotes = new ModNotes($this->dbConn);
        $this->bans = new Bans($this->dbConn);
        $this->warnings = new Warnings($this->dbConn);
    }

    public function getDbConn(): IDbConnection {
        return $this->dbConn;
    }

    public function getDbQueryCount(): int {
        $result = $this->dbConn->query('SHOW SESSION STATUS LIKE "Questions"');
        return $result->next() ? $result->getInteger(1) : 0;
    }

    public function createMigrationManager(): DbMigrationManager {
        return new DbMigrationManager($this->dbConn, 'msz_' . DbMigrationManager::DEFAULT_TABLE);
    }

    public function createMigrationRepo(): IDbMigrationRepo {
        return new FsDbMigrationRepo(MSZ_MIGRATIONS);
    }

    public function getConfig(): IConfig {
        return $this->config;
    }

    public function getRouter(): Router {
        return $this->router->getRouter();
    }

    public function getEmotes(): Emotes {
        return $this->emotes;
    }

    public function getChangelog(): Changelog {
        return $this->changelog;
    }

    public function getNews(): News {
        return $this->news;
    }

    public function getComments(): Comments {
        return $this->comments;
    }

    public function getAuditLog(): AuditLog {
        return $this->auditLog;
    }

    public function getLoginAttempts(): LoginAttempts {
        return $this->loginAttempts;
    }

    public function getRecoveryTokens(): RecoveryTokens {
        return $this->recoveryTokens;
    }

    public function getModNotes(): ModNotes {
        return $this->modNotes;
    }

    public function getBans(): Bans {
        return $this->bans;
    }

    public function getWarnings(): Warnings {
        return $this->warnings;
    }

    private array $activeBansCache = [];

    public function tryGetActiveBan(User|string|null $userInfo = null): ?BanInfo {
        if($userInfo === null) {
            if(User::hasCurrent())
                $userInfo = User::getCurrent();
            else return null;
        }

        $userId = (string)$userInfo->getId();
        if(array_key_exists($userId, $this->activeBansCache))
            return $this->activeBansCache[$userId];

        return $this->activeBansCache[$userId] = $this->bans->tryGetActiveBan($userId);
    }

    public function hasActiveBan(User|string|null $userInfo = null): bool {
        return $this->tryGetActiveBan($userInfo) !== null;
    }

    public function createAuditLog(string $action, array $params = [], User|string|null $userInfo = null): void {
        if($userInfo === null && User::hasCurrent())
            $userInfo = User::getCurrent();

        $this->auditLog->createLog(
            $userInfo,
            $action,
            $params,
            $_SERVER['REMOTE_ADDR'] ?? '::1',
            $_SERVER['COUNTRY_CODE'] ?? 'XX'
        );
    }

    public function setUpHttp(bool $legacy = false): void {
        $this->router = new HttpFx;
        $this->router->use('/', function($response) {
            $response->setPoweredBy('Misuzu');
        });

        $this->registerErrorPages();

        if($legacy)
            $this->registerLegacyRedirects();
        else
            $this->registerHttpRoutes();
    }

    public function dispatchHttp(?HttpRequest $request = null): void {
        $this->router->dispatch($request);
    }

    private function registerErrorPages(): void {
        $this->router->addErrorHandler(400, function($response) {
            $response->setContent(Template::renderRaw('errors.400'));
        });
        $this->router->addErrorHandler(403, function($response) {
            $response->setContent(Template::renderRaw('errors.403'));
        });
        $this->router->addErrorHandler(404, function($response) {
            $response->setContent(Template::renderRaw('errors.404'));
        });
        $this->router->addErrorHandler(500, function($response) {
            $response->setContent(file_get_contents(MSZ_TEMPLATES . '/500.html'));
        });
        $this->router->addErrorHandler(503, function($response) {
            $response->setContent(file_get_contents(MSZ_TEMPLATES . '/503.html'));
        });
    }

    private function registerHttpRoutes(): void {
        $mszCompatHandler = fn($className, $method) => fn(...$args) => (new ("\\Misuzu\\Http\\Handlers\\{$className}Handler")($this))->{$method}(...$args);

        $this->router->get('/', $mszCompatHandler('Home', 'index'));

        $this->router->get('/assets/avatar/:filename', $mszCompatHandler('Assets', 'serveAvatar'));
        $this->router->get('/assets/profile-background/:filename', $mszCompatHandler('Assets', 'serveProfileBackground'));

        $this->router->get('/info', $mszCompatHandler('Info', 'index'));
        $this->router->get('/info/:name', $mszCompatHandler('Info', 'page'));
        $this->router->get('/info/:project/:name', $mszCompatHandler('Info', 'page'));

        $this->router->get('/changelog', $mszCompatHandler('Changelog', 'index'));
        $this->router->get('/changelog.rss', $mszCompatHandler('Changelog', 'feedRss'));
        $this->router->get('/changelog.atom', $mszCompatHandler('Changelog', 'feedAtom'));
        $this->router->get('/changelog/change/:id', $mszCompatHandler('Changelog', 'change'));

        $this->router->get('/news', $mszCompatHandler('News', 'index'));
        $this->router->get('/news.rss', $mszCompatHandler('News', 'feedIndexRss'));
        $this->router->get('/news.atom', $mszCompatHandler('News', 'feedIndexAtom'));
        $this->router->get('/news/:category', $mszCompatHandler('News', 'viewCategory'));
        $this->router->get('/news/post/:id', $mszCompatHandler('News', 'viewPost'));

        $this->router->get('/forum/mark-as-read', $mszCompatHandler('Forum', 'markAsReadGET'));
        $this->router->post('/forum/mark-as-read', $mszCompatHandler('Forum', 'markAsReadPOST'));

        new SharpChatRoutes($this->router, $this->config->scopeTo('sockChat'), $this->bans, $this->emotes);
    }

    private function registerLegacyRedirects(): void {
        $this->router->get('/index.php', function($response) {
            $response->redirect(url('index'), true);
        });

        $this->router->get('/info.php', function($response) {
            $response->redirect(url('info'), true);
        });

        $this->router->get('/settings.php', function($response) {
            $response->redirect(url('settings-index'), true);
        });

        $this->router->get('/changelog.php', function($response, $request) {
            $changeId = $request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
            if($changeId) {
                $response->redirect(url('changelog-change', ['change' => $changeId]), true);
                return;
            }

            $response->redirect(url('changelog-index', [
                'date' => $request->getParam('d'),
                'user' => $request->getParam('u', FILTER_SANITIZE_NUMBER_INT),
            ]), true);
        });

        $infoRedirect = function($response, $request, string ...$parts) {
            $response->redirect(url('info', ['title' => implode('/', $parts)]), true);
        };
        $this->router->get('/info.php/:name', $infoRedirect);
        $this->router->get('/info.php/:project/:name', $infoRedirect);

        $this->router->get('/auth.php', function($response, $request) {
            $response->redirect(url([
                'logout' => 'auth-logout',
                'reset' => 'auth-reset',
                'forgot' => 'auth-forgot',
                'register' => 'auth-register',
            ][$request->getParam('m')] ?? 'auth-login'), true);
        });

        $this->router->get('/news.php', function($response, $request) {
            $postId = $request->getParam('n', FILTER_SANITIZE_NUMBER_INT) ?? $request->getParam('p', FILTER_SANITIZE_NUMBER_INT);

            if($postId > 0)
                $location = url('news-post', ['post' => $postId]);
            else {
                $catId = $request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
                $pageId = $request->getParam('page', FILTER_SANITIZE_NUMBER_INT);
                $location = url($catId > 0 ? 'news-category' : 'news-index', ['category' => $catId, 'page' => $pageId]);
            }

            $response->redirect($location, true);
        });

        $this->router->get('/news.php/rss', function($response, $request) {
            $catId = $request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
            $location = url($catId > 0 ? 'news-category-feed-rss' : 'news-feed-rss', ['category' => $catId]);
            $response->redirect($location, true);
        });

        $this->router->get('/news.php/atom', function($response, $request) {
            $catId = $request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
            $location = url($catId > 0 ? 'news-category-feed-atom' : 'news-feed-atom', ['category' => $catId]);
            $response->redirect($location, true);
        });

        $this->router->get('/news/index.php', function($response, $request) {
            $response->redirect(url('news-index', [
                'page' => $request->getParam('page', FILTER_SANITIZE_NUMBER_INT),
            ]), true);
        });

        $this->router->get('/news/category.php', function($response, $request) {
            $response->redirect(url('news-category', [
                'category' => $request->getParam('c', FILTER_SANITIZE_NUMBER_INT),
                'page' => $request->getParam('p', FILTER_SANITIZE_NUMBER_INT),
            ]), true);
        });

        $this->router->get('/news/post.php', function($response, $request) {
            $response->redirect(url('news-post', [
                'post' => $request->getParam('p', FILTER_SANITIZE_NUMBER_INT),
            ]), true);
        });

        $this->router->get('/news/feed.php', function() {
            return 400;
        });

        $this->router->get('/news/feed.php/rss', function($response, $request) {
            $catId = (int)$request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
            $response->redirect(url(
                $catId > 0 ? 'news-category-feed-rss' : 'news-feed-rss',
                ['category' => $catId]
            ), true);
        });

        $this->router->get('/news/feed.php/atom', function($response, $request) {
            $catId = (int)$request->getParam('c', FILTER_SANITIZE_NUMBER_INT);
            $response->redirect(url(
                $catId > 0 ? 'news-category-feed-atom' : 'news-feed-atom',
                ['category' => $catId]
            ), true);
        });

        $this->router->get('/user-assets.php', function($response, $request) {
            return (new \Misuzu\Http\Handlers\AssetsHandler($this))->serveLegacy($response, $request);
        });
    }
}