<?php
namespace Mince;

use InvalidArgumentException;
use RuntimeException;
use Index\Routing\IRouter;
use Index\Security\CSRFP;
use Ramsey\Uuid\Uuid;

class ClientsRoutes {
    public function __construct(
        private Templating $templating,
        private AccountLinks $accountLinks,
        private Authorisations $authorisations,
        private Verifications $verifications,
        private CSRFP $csrfp,
        private object $authInfo
    ) {}

    public function register(IRouter $router): void {
        $router->use('/clients', [$this, 'verifyRequest']);
        $router->get('/clients', [$this, 'getClients']);
        $router->post('/clients/link', [$this, 'postLink']);
        $router->post('/clients/unlink', [$this, 'postUnlink']);
        $router->post('/clients/authorise', [$this, 'postAuthorise']);
        $router->post('/clients/deauthorise', [$this, 'postDeauthorise']);
    }

    public function verifyRequest($response, $request) {
        if(!$this->authInfo->success)
            return 403;

        if($request->getMethod() === 'POST') {
            if(!$request->isFormContent())
                return 400;
            $body = $request->getContent();

            if(!$body->hasParam('csrfp') || !$this->csrfp->verifyToken((string)$body->getParam('csrfp')))
                return 403;
        }
    }

    public function getClients() {
        try {
            $linkInfo = $this->accountLinks->getLink(userInfo: $this->authInfo->user_id);
            $clients = $this->authorisations->getAuthorisations($linkInfo);

            $this->templating->addVars([
                'link' => $linkInfo,
                'clients' => $clients,
            ]);
        } catch(RuntimeException $ex) {}

        return $this->templating->render('clients/index');
    }

    public function postLink($response, $request) {
        if($this->accountLinks->checkHasLink($this->authInfo->user_id))
            return 403;

        $body = $request->getContent();
        $code = (string)$body->getParam('code');
        if(strlen($code) !== 10)
            return 400;

        $code = strtr(strtoupper($code), '0189', 'OIBG');

        try {
            $verifyInfo = $this->verifications->getVerification(code: $code);
        } catch(RuntimeException $ex) {
            return 404;
        }

        $this->verifications->deleteVerification($verifyInfo);
        $this->accountLinks->createLink($this->authInfo->user_id, $verifyInfo);
        $this->authorisations->createAuthorisation($verifyInfo, grant: true);

        $response->redirect('/clients');
    }

    public function postUnlink($response) {
        $this->accountLinks->deleteLink(userInfo: $this->authInfo->user_id);
        $response->redirect('/clients');
    }

    public function postAuthorise($response, $request) {
        $body = $request->getContent();
        $authId = (string)$body->getParam('auth');
        if(empty($authId))
            return 404;

        try {
            $linkInfo = $this->accountLinks->getLink(userInfo: $this->authInfo->user_id);
        } catch(RuntimeException $ex) {
            return 403;
        }

        try {
            $authInfo = $this->authorisations->getAuthorisation(authId: $authId);
        } catch(RuntimeException $ex) {
            return 403;
        }

        if($authInfo->getUUIDRaw() !== $linkInfo->getUUIDRaw())
            return 403;
        if($authInfo->isGranted())
            return 404;

        $this->authorisations->setAuthorisationGranted($authInfo);

        $response->redirect('/clients');
    }

    public function postDeauthorise($response, $request) {
        $body = $request->getContent();
        $authId = (string)$body->getParam('auth');
        if(empty($authId))
            return 404;

        try {
            $linkInfo = $this->accountLinks->getLink(userInfo: $this->authInfo->user_id);
        } catch(RuntimeException $ex) {
            return 403;
        }

        if($authId === 'all') {
            $this->authorisations->deleteAuthorisations(uuid: $linkInfo);
        } elseif($authId === 'pending') {
            $this->authorisations->deleteAuthorisations(uuid: $linkInfo, pending: true);
        } else {
            try {
                $authInfo = $this->authorisations->getAuthorisation(authId: $authId);
            } catch(RuntimeException $ex) {
                return 403;
            }

            if($authInfo->getUUIDRaw() !== $linkInfo->getUUIDRaw())
                return 403;

            $this->authorisations->deleteAuthorisations(authInfo: $authInfo);
        }

        $response->redirect('/clients');
    }
}