<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Install extends CI_Controller {
 
    var $db_driver = 'mysql';
    var $db_prefix = 'nab_';
 
    /**
     * Constructor
     */
    function __construct()
    {
        parent::__construct();
        $this->load->helper('url');       
         
        // Only show install page if there is no lock
        if ($this->config->item('install') != 'no')
        {
            show_404();
        }
    }
 
    /**
     * First Step
     *
     * We check if the server can be used to install nab
     */
    function index()
    {
     
        if (is_really_writable($this->config->config_path) && ! @chmod($this->config->config_path, FILE_WRITE_MODE))
        {
            show_error('config file is not writable');
        }
 
        // Is there a database.php file?
        if (@include($this->config->database_path))
        {
            // let's test if the data contained in the file was setup before
            if ($this->_test_mysql_connection($db[$active_group]))
            {   
                redirect('install/step2');
            }
            else
            {
                if (is_really_writable($this->config->database_path) === FALSE)
                {
                    show_error('database config file is not writable');             
                }
                else
                {
                    //we have the files but there is no connection
                    redirect('install/step1');              
                }
                 
            }
        }
        else
        {
            show_error('database config file does not exists');
        }
    }
  
    /**
     * Start 
     *
     * There is no connection but we have the files and we can write them
     */
     
    function step1()
    {       
  
      $this->form_validation->set_rules('host', 'Host', 'required');
      $this->form_validation->set_rules('database', 'Database', 'required');
      $this->form_validation->set_rules('user', 'Database User', 'required');
      $this->form_validation->set_rules('pass', 'Database Pass', '');
         
        if ($this->form_validation->run() == TRUE)
        {
            if($this->_setup_database())
            {
                    redirect('install/step2');                          
            }
        }
        else
        {
            $data['msg'] = validation_errors('<h3>', '</h3>');          
            $data['title'] = 'Install Step 1';
            $this->load->view('install/step1', $data);            
        }
    }
 
    /**
     * Step2 
     *
     * Here you should add custom stuff (if a blog for example, set title, users, etc)
     */
     
    function step2()
    {
            $this->form_validation->set_rules('title', 'Blog Title', 'required');
            $this->form_validation->set_rules('user', 'Blog User', 'required');
            $this->form_validation->set_rules('pass', 'Blog Pass', 'required');   
        if ($this->form_validation->run() == TRUE)
        {
            if($this->_install_database())
            {
                    redirect('install/finished');                           
            }
            else
            {
                show_error('there was a problem installing the database');
            }
        }
        else
        {
            $data['msg'] = validation_errors('<h3>', '</h3>');          
            $data['title'] = 'Install Step 2';
            $this->load->view('install/step2', $data);            
        }
    }
     
    /**
     * Finished 
     *
     * Here you should add custom stuff (if a blog for example, set title, users, etc)
     */
    function finished()
    {       
        $data['title'] = 'Install Finished';
        $this->load->view('install/finished', $data);         
    }   
 
 
    /**
     * DB Driver Test
     *
     * Test a given driver to ensure the server can use it. We'll also create the
     * database here if we need to.
     *
     * @access  private
     * @param   array
     * @return  bool
     */
    function _test_mysql_connection($config_db)
    {
        if(!is_array($config_db))
        {
            $config_db = array();
            $config_db['hostname'] = $this->input->post('host');
            $config_db['username'] = $this->input->post('user');
            $config_db['password'] = $this->input->post('pass');
            $config_db['database'] = $this->input->post('database');
            $config_db['dbdriver'] = 'mysql';   
             
        }
        // Unset any existing DB information
        unset($this->db);

        // Debugging to FALSE to avoid CI throwing errors if its wrong
        $config_db['db_debug'] = FALSE;
 
        // load based on custom passed information
        $this->load->database($config_db);
 
        if (is_resource($this->db->conn_id) OR is_object($this->db->conn_id))
        {
            // There is a connection

            $this->load->dbutil();

            // Now then, does the DB exist?
            if ($this->dbutil->database_exists($this->db->database))
            {
                return TRUE;
            }
            else
            {
                $this->load->dbforge();

                if ($this->dbforge->create_database($this->db->database))
                {
                    return TRUE;
                }
                else
                {
                    return FALSE;
                }
            }
        }
        else
        {
            return FALSE;
        }
    }
     

    /**
     * Do Install
     */
    function _install_database()
    {
        $this->load->database();
        $this->load->dbforge();

        $this->load->model('install_model');
        $this->install_model->add_tables();

        if ( ! $this->config->config_update(array('install'=>"locked")))
        {
            show_error('could not update config file');
        }
 
        @chmod($this->config->config_path, FILE_READ_MODE);
        @chmod($this->config->database_path, FILE_READ_MODE);
 
		return TRUE;
    }

    /**
     * Setup Database (only MySQL supported now)
     */
     
    function _setup_database() 
    {
        if (@include($this->config->database_path))
        {
            if ($this->_test_mysql_connection($db[$active_group]))
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }

        $_db['hostname'] = $this->input->post('host');
        $_db['username'] = $this->input->post('user');
        $_db['password'] = $this->input->post('pass');
        $_db['database'] = $this->input->post('database');
 
        // Update config/database.php file
        return $this->config->db_config_update($_db); 
    }
}

/* End of file install.php */
/* Location: ./application/controllers/install.php */