<?php 
namespace application\controllers;

class AccountController {
    public static function create($data): void {
        $username =  $data['username'];
        $domain =    $data['domain'];
        $adminName = $data['admin_name'] ?? '';
        $adminPassword = $data['admin_password'];
 
        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(" Creating user " . $username . "  DebugMode: " . $GLOBALS['debug']);

        $userExisted = false;
        if( strpos(file_get_contents("/etc/passwd"),$username) !== false) {
            $userExisted = true;
        }

        if ($userExisted != true) {
            // Create user without login access
            if ($GLOBALS['debug'] == true) {error_log("Adding User: " . $username); }
            exec("sudo /usr/sbin/useradd -m -k -M -s /usr/sbin/nologin $username  2>&1", $userOutput, $userReturnCode);
            if ($userReturnCode !== 0) {
                error_log("deploy: ERROR: Useradd for  $username failed, details => " . implode("\n", $userOutput));
                http_response_code(500);
                echo json_encode(['error' => 'Failed to create user', 'details' => implode("\n", $userOutput)]);
                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("Creating tmpdir for : " . $username); }
        if (is_dir("/home/$username/tmp") != true) {
             exec("sudo /usr/bin/mkdir -p /home/$username/tmp  2>&1", $mkdirOutput, $mkdirReturnCode);
                if ($mkdirReturnCode !== 0) {
                    error_log("deploy: ERROR: Failed to create temp directory for  $username failed, details => " . implode("\n", $mkdirOutput));
                    http_response_code(500);
                    echo json_encode(['error' => 'Failed to create tmp 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 backups dir', 'details' => implode("\n", $chownOutput)]);
            return;
        }

        // Create PHP-FPM User
        // /etc/php/8.2/fpm/user.in
        if ($userExisted != true) {
            if ($GLOBALS['debug'] == true) {error_log("Writing PHP-FPM Config for : " . $username); }
            $phpContent = file_get_contents("/etc/php/8.2/fpm/user.in");
            $phpContent = str_replace("USERNAME", $username, $phpContent);
            file_put_contents("/etc/php/8.2/fpm/pool.d/" . $username . ".conf", $phpContent);

            if ($GLOBALS['debug'] == true) {error_log("Restarting PHP-FPM : " . $username);}
            exec('sudo /usr/bin/systemctl reload php8.2-fpm', $phpOutput, $phpReturnCode);
            if ($phpReturnCode !== 0) {
                error_log("deploy: ERROR: PHP-FPM reload error, details => " . implode("\n", $phpOutput));
                http_response_code(500);
                echo json_encode(['error' => 'Failed to reload PHP-FPM', 'details' => implode("\n", $phpOutput)]);
                return;
            }
        }

        echo json_encode(['success' => 'User crreation successfully','details' => '']);
    }

    public static function terminate($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;
        }
        // remove PHP-FPM User
        if ($GLOBALS['debug'] == true) {error_log("Removing PHP-FPM Config for : " . $username); }
        $configName = "/etc/php/8.2/fpm/pool.d/" . $username . ".conf";
        exec("sudo /usr/bin/rm -f $configName 2>&1", $userOutput, $userReturnCode);
        if ($GLOBALS['debug'] == true) {error_log("Restarting PHP-FPM : " . $username);}
        exec('sudo /usr/bin/systemctl reload php8.2-fpm', $phpOutput, $phpReturnCode);
        if ($phpReturnCode !== 0) {
            error_log("deploy: ERROR: PHP-FPM reload error, details => " . implode("\n", $phpOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to reload PHP-FPM', 'details' => implode("\n", $phpOutput)]);
            return;
        }
        if(!empty($domain)) {
            $configFile = "/etc/apache2/sites-enabled/$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 $domain --non-interactive 2>&1", $output, $returnCode);
            if ($returnCode !== 0) {
                error_log("deploy: ERROR: certbot failed to delete certificate on $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", $apacheOutput)]);
                return;
            }   
        }
        // Remove user and files
        if ($GLOBALS['debug'] == true) {error_log("Remove User: " . $username); }
        exec("sudo /usr/sbin/userdel -r -f $username  2>&1", $userOutput, $userReturnCode);
        if ($userReturnCode !== 0) {
            error_log("deploy: ERROR: Userdel for  $username failed, details => " . implode("\n", $userOutput));
            http_response_code(500);
            echo json_encode(['error' => 'Failed to remove user', 'details' => implode("\n", $userOutput)]);
            return;
        }
        echo json_encode(['success' => 'Removing user ' . $username . ' successfully']);
    }

}