<?php
/*********************************************************************
    class.installer.php

    Help-Desk Intaller - installs the latest version.

**********************************************************************/
require_once INCLUDE_DIR.'class.migrater.php';
require_once INCLUDE_DIR.'class.setup.php';
require_once INCLUDE_DIR.'class.i18n.php';

class Installer extends SetupWizard {

    var $config;

    function __construct($configfile) {
        $this->config =$configfile;
        $this->errors=array();
    }

    function getConfigFile() {
        return $this->config;
    }

    function config_exists() {
        return ($this->getConfigFile() && file_exists($this->getConfigFile()));
    }

    function config_writable() {
        return ($this->getConfigFile() && is_writable($this->getConfigFile()));
    }

    function check_config() {
        return ($this->config_exists() && $this->config_writable());
    }

    //XXX: Latest version insall logic...no carry over.
    function install($vars) {

        $this->errors=$f=array();

        $f['name']          = array('type'=>'string',   'required'=>1, 'error'=>__('Name required'));
        $f['email']         = array('type'=>'email',    'required'=>1, 'error'=>__('Valid email required'));
        $f['fname']         = array('type'=>'string',   'required'=>1, 'error'=>__('First name required'));
        $f['lname']         = array('type'=>'string',   'required'=>1, 'error'=>__('Last name required'));
        $f['admin_email']   = array('type'=>'email',    'required'=>1, 'error'=>__('Valid email required'));
        $f['username']      = array('type'=>'username', 'required'=>1, 'error'=>__('Username required'));
        $f['passwd']        = array('type'=>'string', 'required'=>1, 'error'=>__('Password required'));
        $f['passwd2']       = array('type'=>'string', 'required'=>1, 'error'=>__('Confirm Password'));
        $f['prefix']        = array('type'=>'string',   'required'=>1, 'error'=>__('Table prefix required'));
        $f['dbhost']        = array('type'=>'string',   'required'=>1, 'error'=>__('Host name required'));
        $f['dbname']        = array('type'=>'string',   'required'=>1, 'error'=>__('Database name required'));
        $f['dbuser']        = array('type'=>'string',   'required'=>1, 'error'=>__('Username required'));
        $f['dbpass']        = array('type'=>'string',   'required'=>1, 'error'=>__('Password required'));

        $vars = array_map('trim', $vars);

        if(!Validator::process($f,$vars,$this->errors) && !$this->errors['err'])
            $this->errors['err'] = sprintf('%s — %s',
                __('Missing or invalid data'),
                __('Correct any errors below and try again'));


        //Staff's email can't be same as system emails.
        if($vars['admin_email'] && $vars['email'] && !strcasecmp($vars['admin_email'],$vars['email']))
            $this->errors['admin_email']=__('Conflicts with system email above');
        //Admin's pass confirmation.
        if(!$this->errors && strcasecmp($vars['passwd'],$vars['passwd2']))
            $this->errors['passwd2']=__('Passwords do not match');

        //Check table prefix underscore required at the end!
        if($vars['prefix'] && substr($vars['prefix'], -1)!='_')
            $this->errors['prefix']=__('Bad prefix. Must have underscore (_) at the end. e.g \'ost_\'');

        //Make sure admin username is not very predictable. XXX: feels dirty but necessary
        if(!$this->errors['username'] && in_array(strtolower($vars['username']),array('admin','admins','username')))
            $this->errors['username']=__('Bad username');

        // Support port number specified in the hostname with a colon (:)
        list($host, $port) = explode(':', $vars['dbhost']);
        if ($port && is_numeric($port) && ($port < 1 || $port > 65535))
            $this->errors['db'] = __('Invalid database port number');

        //MYSQL: Connect to the DB and check the version & database (create database if it doesn't exist!)
        if(!$this->errors) {
            if(!db_connect($vars['dbhost'],$vars['dbuser'],$vars['dbpass']))
                $this->errors['db']=sprintf(__('Unable to connect to MySQL server: %s'), db_connect_error());
            elseif(explode('.', db_version()) < explode('.', SetupWizard::getMySQLVersion()))
                $this->errors['db']=sprintf(__('Help-Desk requires MySQL %s or later!'),SetupWizard::getMySQLVersion());
            elseif(!db_select_database($vars['dbname']) && !db_create_database($vars['dbname'])) {
                $this->errors['dbname']=__("Database doesn't exist");
                $this->errors['db']=__('Unable to create the database.');
            } elseif(!db_select_database($vars['dbname'])) {
                $this->errors['dbname']=__('Unable to select the database');
            } else {
               try {
                   //Abort if we have another installation (or table) with same prefix.
                   $sql = 'SELECT * FROM `'.$vars['prefix'].'config` LIMIT 1';
                   if(db_query($sql, false)) {
                       $this->errors['err'] = __('We have a problem - another installation with same table prefix exists!');
                       $this->errors['prefix'] = __('Prefix already in-use');
                   } else {
                       //Try changing charset and collation of the DB - no bigie if we fail.
                       db_query('ALTER DATABASE '.$vars['dbname'].' DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci', false);
                   }
               } catch (Exception $ex) {} // If an error is thrown, don't worry, (be happy) it's okay!
            }
        }

        /*************** We're ready to install ************************/
        define('ADMIN_EMAIL',$vars['admin_email']); //Needed to report SQL errors during install.
        define('TABLE_PREFIX',$vars['prefix']); //Table prefix
        if (!defined('SECRET_SALT'))
            define('SECRET_SALT',md5(TABLE_PREFIX.ADMIN_EMAIL));
        Bootstrap::defineTables(TABLE_PREFIX);
        Bootstrap::loadCode();

        // Check password against password policy (after loading code)
        try {
            PasswordPolicy::checkPassword($vars['passwd'], null);
        }
        catch (BadPassword $e) {
            $this->errors['passwd'] = $e->getMessage();
        }

        // bailout on errors.
        if ($this->errors)
            return false;


        $debug = true; // Change it to false to squelch SQL errors.

        //Last minute checks.
        if(!file_exists($this->getConfigFile()) || !($configFile=file_get_contents($this->getConfigFile())))
            $this->errors['err']=__('Unable to read config file. Permission denied! (#2)');
        elseif(!($fp = @fopen($this->getConfigFile(),'r+')))
            $this->errors['err']=__('Unable to open config file for writing. Permission denied! (#3)');

        else {
            $streams = DatabaseMigrater::getUpgradeStreams(INCLUDE_DIR.'upgrader/streams/');
            foreach ($streams as $stream=>$signature) {
                $schemaFile = INC_DIR."streams/$stream/install-mysql.sql";
                if (!file_exists($schemaFile) || !($fp2 = fopen($schemaFile, 'rb')))
                    $this->errors['err'] = sprintf(
                        __('%s: Internal error occurred - please make sure your download is the latest (#1)'),
                        $stream);
                elseif (
                        // TODO: Make the hash algo configurable in the streams
                        //       configuration ( core : md5 )
                        !($hash = md5(fread($fp2, filesize($schemaFile))))
                        || strcasecmp($signature, $hash))
                    $this->errors['err'] = sprintf(
                        __('%s: Unknown or invalid schema signature (%s .. %s)'),
                        $stream,
                        $signature, $hash);
                elseif (!$this->load_sql_file($schemaFile, $vars['prefix'], true, $debug))
                    $this->errors['err'] = sprintf(
                        __('%s: Error parsing SQL schema! Get help from developers (#4)'),
                        $stream);
            }
        }

        if ($this->errors)
            return false;

        // TODO: Use language selected from install worksheet
        $i18n = new Internationalization($vars['lang_id']);
        $i18n->loadDefaultData();

        Signal::send('system.install', $this);

        list($sla_id) = Sla::objects()->order_by('id')->values_flat('id')->first();
        list($dept_id) = Dept::objects()->order_by('id')->values_flat('id')->first();
        list($role_id) = Role::objects()->order_by('id')->values_flat('id')->first();
        list($schedule_id) = Schedule::objects()->order_by('id')->values_flat('id')->first();

        $sql='SELECT `tpl_id` FROM `'.TABLE_PREFIX.'email_template_group` ORDER BY `tpl_id` LIMIT 1';
        $template_id_1 = db_result(db_query($sql, false));

        // Create admin user.
        $staff = Staff::create(array(
            'isactive' => 1,
            'isadmin' => 1,
            'max_page_size' => 25,
            'dept_id' => $dept_id,
            'role_id' => $role_id,
            'email' => $vars['admin_email'],
            'firstname' => Format::htmlchars($vars['fname']),
            'lastname' => Format::htmlchars($vars['lname']),
            'username' => $vars['username'],
        ));
        $staff->updatePerms(array(
            User::PERM_CREATE,
            User::PERM_EDIT,
            User::PERM_DELETE,
            User::PERM_MANAGE,
            User::PERM_DIRECTORY,
            Organization::PERM_CREATE,
            Organization::PERM_EDIT,
            Organization::PERM_DELETE,
            FAQ::PERM_MANAGE,
            Email::PERM_BANLIST,
            Dept::PERM_DEPT,
            Staff::PERM_STAFF,
        ));
        $staff->setPassword($vars['passwd']);
        if (!$staff->save()) {
            $this->errors['err'] = __('Unable to create admin user (#6)');
            return false;
        }

        // Extended Access
        foreach (Dept::objects()
                ->filter(Q::not(array('id' => $dept_id)))
                ->values_flat('id') as $row) {
            $da = new StaffDeptAccess(array(
                        'dept_id' => $row[0],
                        'role_id' => $role_id
                        ));
            $staff->dept_access->add($da);
        }
        $staff->dept_access->saveAll();

        // Create default emails!
        $email = $vars['email'];
        list(,$domain) = explode('@', $vars['email']);
        foreach (array(
            "Support" => $email,
            "osTicket Alerts" => "alerts@$domain",
            '' => "noreply@$domain",
        ) as $name => $mailbox) {
            $mb = Email::create(array(
                'name' => $name,
                'email' => $mailbox,
                'dept_id' => $dept_id,
            ));
            $mb->save();
            if ($mailbox == $email)
                $support_email_id = $mb->email_id;
            if ($mailbox == "alerts@$domain")
                $alert_email_id = $mb->email_id;
        }

        //Create config settings---default settings!
        $defaults = array(
            'default_email_id'=>$support_email_id,
            'alert_email_id'=>$alert_email_id,
            'default_dept_id'=>$dept_id,
            'default_sla_id'=>$sla_id,
            'schedule_id'=>$schedule_id,
            'default_template_id'=>$template_id_1,
            'default_timezone' => $vars['timezone'] ?: date_default_timezone_get(),
            'admin_email'=>$vars['admin_email'],
            'schema_signature'=>$streams['core'],
            'helpdesk_url'=>URL,
            'helpdesk_title'=>Format::htmlchars($vars['name'], true)
        );

        $config = new Config('core');
        if (!$config->updateAll($defaults))
            $this->errors['err']=__('Unable to create config settings').' (#7)';

        // Set company name
        require_once(INCLUDE_DIR.'class.company.php');
        $company = new Company();
        $company->getForm()->setAnswer('name', $vars['name']);
        $company->getForm()->save();

        foreach ($streams as $stream => $signature) {
            if ($stream != 'core') {
                $config = new Config($stream);
                if (!$config->update('schema_signature', $signature))
                    $this->errors['err'] = __('Unable to create config settings').' (#8)';
				    }
			  }

        if ($this->errors)
            return false; //Abort on internal errors.


        //Rewrite the config file - MUST be done last to allow for installer recovery.
        $configFile = strtr($configFile, array(
            "define('OSTINSTALLED',FALSE);" => "define('OSTINSTALLED',TRUE);",
            '%ADMIN-EMAIL' => $vars['admin_email'],
            '%CONFIG-DBHOST' => $vars['dbhost'],
            '%CONFIG-DBNAME' => $vars['dbname'],
            '%CONFIG-DBUSER' => $vars['dbuser'],
            '%CONFIG-DBPASS' => $vars['dbpass'],
            '%CONFIG-PREFIX' => $vars['prefix'],
            '%CONFIG-SIRI' => Misc::randCode(32),
        ));
        if (!$fp || !ftruncate($fp,0) || !fwrite($fp,$configFile)) {
            $this->errors['err']=__('Unable to write to config file. Permission denied! (#5)');
            return false;
        }
        @fclose($fp);

        /************* Make the system happy ***********************/
        global $cfg;
        $cfg = new OsticketConfig();

        //Create a ticket to make the system warm and happy.
        $errors = array();
        $ticket_vars = $i18n->getTemplate('templates/ticket/installed.yaml')
            ->getData();
        $ticket = Ticket::create($ticket_vars, $errors, 'api', false, false);

        if ($ticket
            && ($org = Organization::objects()->order_by('id')->one())
        ) {
            $user = User::lookup($ticket->getOwnerId());
            $user->setOrganization($org);
        }

        // Rebuild cdata tables
        DynamicForm::rebuildDynamicDataViews();

        //TODO: create another personalized ticket and assign to admin??
        //Log a message.
        $msg=__("Congratulations Help-Desk basic installation completed!\n\nThank you for choosing ACCESSYSTEM!");
        $sql='INSERT INTO '.TABLE_PREFIX.'syslog SET created=NOW(), updated=NOW(), log_type="Debug" '
            .', title="Help-Desk installed!"'
            .', log='.db_input($msg)
            .', ip_address='.db_input($_SERVER['REMOTE_ADDR']);
        db_query($sql, false);

        return true;
    }
}
?>
