<?php 
namespace application\controllers;

class DeployDevController {
    public static function deploy($data): void {
        $username =  $data['username'];
        $domain =    $data['domain'];
        $adminName = $data['admin_name'] ?? '';
        $adminPassword = $data['admin_password'];
        $webDir = "/home/$username/dev.$domain";
        $configTemplate = '/etc/apache2/site-config.in';
        $configFile = "/etc/apache2/sites-enabled/dev.$domain.conf";

        if (empty($username) || empty($domain) || empty($adminName) || empty($adminPassword)) {
            error_log("deploy: ERROR: No username, domain, admin_name or admin_password provided");
            http_response_code(400);
            error_log("deploy: ERROR: UserName 1 " .    $username);
            error_log("deploy: ERROR: Domain   1 " .    $domain);
            error_log("deploy: ERROR: UserName 2 " .    $data['username'] );
            error_log("deploy: ERROR: Domain   2 " .    $data['domain']   );
            error_log("deploy: ERROR: AdminName  " .    $adminName);
            error_log("deploy: ERROR: AdminPasswd" . $adminPassword);

            error_log(print_r($data,true));
            echo json_encode(['error' => 'Missing required parameters']);
            return;
        }

        error_log(" Starting function deploy for " . $username . " and " . $domain . "  DebugMode: " . $GLOBALS['debug']);

        if ($GLOBALS['debug'] == true) { error_log("Creating Webdir ($webDir) for : " . $username); }
        exec("sudo /usr/bin/mkdir -p $webDir 2>&1", $mkdirOutput, $mkdirReturnCode);
            if ($mkdirReturnCode !== 0) {
                error_log("deploy: ERROR: Create Webdir for  $username failed, details => ". implode("\n", $mkdirOutput));
                http_response_code(500);
                echo json_encode(['error' => 'Failed to create web dir', 'details' => implode("\n", $mkdirOutput)]);
                return;
            }

        if ($GLOBALS['debug'] == true) { error_log("Creating logdir for : " . $username); }
        if (is_dir("/home/$username/logs") != true) {
             exec("sudo /usr/bin/mkdir -p /home/$username/logs  2>&1", $mkdirOutput, $mkdirReturnCode);
                if ($mkdirReturnCode !== 0) {
                    error_log("deploy: ERROR: Failed to create log directory for  $username failed, details => " . implode("\n", $mkdirOutput));
                    http_response_code(500);
                    echo json_encode(['error' => 'Failed to create logs dir', 'details' => implode("\n", $mkdirOutput)]);
                    return;
                }
        }
        if ($GLOBALS['debug'] == true) { error_log("Creating backup dir for : " . $username); }
        if (is_dir("/home/$username/backups") != true) {
           exec("sudo /usr/bin/mkdir -p /home/$username/backups  2>&1", $mkdirOutput, $mkdirReturnCode);
           if ($mkdirReturnCode !== 0) {
               error_log("deploy: ERROR: mkdir /home/$username/backups failed, details => " . implode("\n", $mkdirOutput));
               http_response_code(500);
               echo json_encode(['error' => 'Failed to create backups dir', 'details' => implode("\n", $mkdirOutput)]);
               return;
           }
        }

        if ($GLOBALS['debug'] == true) { error_log("Chown homedir: " . $username); }
        exec("sudo /usr/bin/chown $username:$username /home/$username -R 2>&1", $chownOutput, $chownReturnCode);
        if ($chownReturnCode !== 0) {
            error_log("deploy: ERROR: chown on /home/$username failed, details => " . implode("\n", $chownOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to chown homedir', 'details' => implode("\n", $chownOutput)]);
            return;
        }

        if ($GLOBALS['debug'] == true) { error_log("Reading Apache Config Template /etc/apache2/site-config.in"); }
        $configContent = file_get_contents($configTemplate);

        if ($GLOBALS['debug'] == true) { error_log("Replace config settings in Apache Config Template"); }
        $configContent = str_replace(['DOCUMENTROOT', 'SERVERNAME','USERNAME', 'DOMAINNAME', 'SERVERALIAS'], [$webDir, "dev.$domain",$username,"dev.$domain", "" ], $configContent);

        if ($GLOBALS['debug'] == true) { error_log("Running Certbot for Domain " . $domain); }
        exec("sudo /usr/bin/certbot certonly --webroot -w /etc/apache2/letsencrypt -d dev.$domain --non-interactive --agree-tos --email admin@$domain 2>&1", $output, $returnCode);
        if ($returnCode !== 0) {
            error_log("deploy: ERROR: certbot failed to create certificate  on dev.$domain, details => " . implode("\n", $output));
            http_response_code(500);
            echo json_encode(['error' => 'Certbot failed', 'details' => implode("\n", $output)]);
            return;
        }
        if ($GLOBALS['debug'] == true) { error_log("Replace sslsettings in in Apache Config Template"); }
        $configContent = str_replace('DOMAINNAME', $domain, $configContent);

        if ($GLOBALS['debug'] == true) { error_log("Writing apache config file to " . $configFile); }
        if (file_put_contents($configFile, $configContent) != true) {
            error_log("deploy: ERROR: while writing apache config");
            echo json_encode(['error' => 'Failed to write Apache config', 'details' => []]);
        }

        exec('sudo /usr/bin/systemctl reload apache2  2>&1', $apacheOutput, $apacheReturnCode);
        if ($GLOBALS['debug'] == true) { error_log("Restarting Apache"); }
        if ($apacheReturnCode !== 0) {
            error_log("deploy: ERROR: Apache Reload error, details => " . implode("\n", $apacheOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to reload Apache', 'details' => implode("\n", $apacheOutput)]);
            return;
        }

        echo json_encode(['success' => 'Development site deployed successfully','details' => '']);
    }

    public static function revert($data): void {
        $username = $data['username'] ?? '';
        $domain = $data['domain'] ?? '';
        $adminName = $data['admin_name'] ?? '';
        $adminPassword = $data['admin_password'] ?? '';
        $webDir = "/home/$username/dev.$domain";
	    $databaseName = $username . "_dev_";
	    $databaseName = $databaseName  . str_replace(['-', '.'], ["_", "_"], $domain);


	exec("sudo /usr/bin/rm -rf $webDir 2>&1", $rmOutput, $rmReturnCode);
        if ($rmReturnCode !== 0) {
            error_log("revert: error on rm $webDir -r, details => " . implode("\n", $rmOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to remove webdir dir', 'details' => implode("\n", $rmOutput)]);
            return;
        }

	exec("sudo /usr/bin/mkdir $webDir  2>&1", $mkdirOutput, $mkdirReturnCode);
        error_log("revert: error on mkdir $webDir, details => " . implode("\n", $mkdirOutput));
        if ($mkdirReturnCode !== 0) {
            http_response_code(500);
            echo json_encode(['error' => 'Failed to create web dir', 'details' => implode("\n", $mkdirOutput)]);
            return;
        }

	exec("sudo /usr/bin/chown $username:$username $webDir  2>&1", $chownOutput, $chownReturnCode);
        if ($chownReturnCode !== 0) {
            error_log("revert: chown error on $webDir, details => " . implode("\n", $chownOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to chown web dir', 'details' => implode("\n", $chownOutput)]);
            return;
        }
        echo json_encode(['success' => 'Development site deployed successfully']);
    }

    public static function undeploy($data): void {
        $username = $data['username'] ?? '';
        $domain = $data['domain'] ?? '';
        if (empty($username)) {
            error_log("terminate: ERROR: No username provided");
            http_response_code(400);
            error_log(print_r($data,true));
            echo json_encode(['error' => 'Missing username']);
            return;
        }
        if( strpos(file_get_contents("/etc/passwd"),$username) == false) {
            error_log("terminate: ERROR: User $username does not exist");
            http_response_code(400);
            error_log(print_r($data,true));
            echo json_encode(['error' => 'Unknown user']);
            return;
        }
        if(!empty($domain)) {
            $configFile = "/etc/apache2/sites-enabled/dev.$domain.conf";
            if ($GLOBALS['debug'] == true) { error_log("Remove config of user : " . $username); }
            exec("sudo /usr/bin/rm -f $configFile 2>&1", $userOutput, $userReturnCode);
            exec("sudo /usr/bin/certbot delete --cert-name dev.$domain --non-interactive 2>&1", $output, $returnCode);
            if ($returnCode !== 0) {
                error_log("deploy: ERROR: certbot failed to delete certificate on dev.$domain, details => " . implode("\n", $output));
                http_response_code(500);
                echo json_encode(['error' => 'Certbot failed', 'details' => implode("\n", $output)]);
                return;
            }
            exec('sudo /usr/bin/systemctl reload apache2  2>&1', $apacheOutput, $apacheReturnCode);
            if ($GLOBALS['debug'] == true) { error_log("Restarting Apache"); }
            if ($apacheReturnCode !== 0) {
                error_log("deploy: ERROR: Apache Reload error, details => " . implode("\n", $apacheOutput));
                http_response_code(500);
                echo json_encode(['error' => 'Failed to reload Apache', 'details' => implode("\n", $apacheOutput)]);
                return;
            }   
        }
        echo json_encode(['success' => 'Undeploy site dev.' . $domain . ' successfully']);
    }

}