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

class Menus extends Admin_Controller {

	//this property is used for validating existing menu title on call back edit menu
	private $menu_current_id = NULL;
		
	function __construct() {
		parent::__construct();	
		$this->load->model('menu_m'); 
	}
		
	//this is to list all menus
	public function index() {
		$this->db->select('*');
		$this->db->from('configuration');
		$data['config'] = $this->db->get()->result();

		foreach ($data['config'] as $item) {
			$this->data_header['image'] = $item->logo;
			$this->data_header['icon'] = $item->website_icon;
		}
		//pagination in action. 50 results per page
		$this->load->library('pagination');
		$config['base_url'] = base_url() . 'admin/menus/index';
		$config['per_page'] = 50;
		$config["uri_segment"] = 4; 

		//get parent menus only
		$this->data['parent_menus'] = $this->menu_m->get_all_parent_menus($config["per_page"], $this->uri->segment($config['uri_segment']));  

		//fetch all menus
		$config['total_rows'] = $this->menu_m->record_count(); 
		$this->pagination->initialize($config);
   		$this->data['menus'] = $this->menu_m->get_all_menus($config["per_page"], 
		$this->uri->segment(4)); 
	
		//load view
		$this->data['subview'] = 'admin/menus/index';
		$this->load->view('admin/templates/header', $this->data_header); 
		$this->load->view('admin/_layout_main', $this->data);
		$this->load->view('admin/templates/footer');	
    }
	
	//to add a new menu 
	public function add() {
	
		$this->data['menus'] = $this->menu_m->get_new();  
		$this->data['parent_menus'] = $this->menu_m->get_parent_menus();	

		//get ordering number and display at add form
		$this->db->select_max('priority')->from('menus');
		$current_priority = $this->db->get()->row()->priority;
		if($current_priority == NULL) {
			$this->data['menus']->priority = 1;	
		} else {
			$this->data['menus']->priority = $current_priority + 1;
		}  
		
		//validation in action
		//validation check in action
		$rules = $this->menu_m->rules; 

		$config = $this->check_form_validation($rules, $_POST);
		
		$this->load->library('form_validation');
		$this->form_validation->set_rules($config); 
		$this->form_validation->set_error_delimiters('<div class="error">', '</div>');

		if($this->form_validation->run($this) == TRUE) {
			
			$data = $this->process_data($_POST);
			
			$this->menu_m->add_menu($data); 

			$this->session->set_flashdata('success', '<br><p style="background:green; color:white; padding:5px; font-weight:bold;">Menu Add Successful</p>');

			redirect('admin/menus');
			
		}  

		$this->db->select('*');
		$this->db->from('configuration');
		$data['config'] = $this->db->get()->result();

		foreach ($data['config'] as $item) {
			$this->data_header['image'] = $item->logo;
			$this->data_header['icon'] = $item->website_icon;
		}
		$this->data['subview'] = 'admin/menus/edit';
		$this->load->view('admin/templates/header', $this->data_header); 
		$this->load->view('admin/_layout_main', $this->data);
		$this->load->view('admin/templates/footer');
	}
	
	//to edit menu in admin
	public function edit($id = NULL) {

		//check if id exist. If not exist, show 404.
		$count = $this->menu_m->count_exist($id);
		
		if ($count == 0) { 
			//page not exist
			show_404();
		}	

		$this->menu_current_id = (int) $id;	

		$this->data['menus'] = $this->menu_m->get($id);	
		
		//validation check in action
		$rules = $this->menu_m->rules;
		$config = $this->check_form_validation($rules, $_POST);

		$this->load->library('form_validation');
		$this->form_validation->set_error_delimiters('<div class="error">', '</div>'); //above is to add class to form validation error, to be styled
		$this->form_validation->set_rules($config); 
		$this->form_validation->set_error_delimiters('<div class="error">', '</div>');

		if($this->form_validation->run($this) == TRUE) {
			
			$data = $this->process_data($_POST);

			$this->menu_m->edit_menu($id, $data); 

			$this->session->set_flashdata('success', '<br><p style="background:green; color:white; padding:5px; font-weight:bold;">menu Edit Successful</p>');
			
			redirect('admin/menus');
		} 
		$this->db->select('*');
		$this->db->from('configuration');
		$data['config'] = $this->db->get()->result();

		foreach ($data['config'] as $item) {
			$this->data_header['image'] = $item->logo;
			$this->data_header['icon'] = $item->website_icon;
		}
		$this->data['parent_menus'] = $this->menu_m->get_parent_menus();
		
		$this->data['subview'] = 'admin/menus/edit';
		$this->load->view('admin/templates/header', $this->data_header); 
		$this->load->view('admin/_layout_main', $this->data);
		$this->load->view('admin/templates/footer');	
	}
	
	
	//to delete a menu
	public function delete($id) {

		//check if id exist. If not exist, show 404.
		$count = $this->menu_m->count_exist($id);
		
		if ($count == 0) {  
			//page not exist 
			show_404(); 
		}		
		
		//delete menu
		$this->menu_m->delete($id);

		$this->session->set_flashdata('success', '<br><p style="background:green; color:white; padding:5px; font-weight:bold;">Menu Delete Successful</p>');
		redirect('admin/menus');
	}

	public function ajax_get_menutype() { 

		$this->load->helper('form');

		//test if ajax call to prevent direct access
		if (!$this->input->is_ajax_request()) {
   			exit('No direct script access allowed'); 
		} 

		$menu_type = $this->input->post('menu_type');
		$current_menu_id = $this->input->post('current_menu_id');
		
		switch ($menu_type) { 
			case 'page':

				//get all pages
				$this->db->select('*')->from('pages')->where('status', 1)->where('parent', NULL)->order_by('id_pages', 'ASC');
				$data['pages'] = $this->db->get()->result(); 

				if ($current_menu_id == NULL) {
					
					$data['current_page_id'] = NULL;
				
				} else { 

					//get current active page_id
					$this->db->select('page_id')->from('menus')->where('id_menus', 
					(int) $current_menu_id);
					$data['current_page_id'] = $this->db->get()->row()->page_id;	
				}

				$this->load->view('admin/menus/ajax_get_pages', $data);

			break;		

			case 'external':

				if ($current_menu_id == NULL) {
					
					$this->load->view('admin/menus/ajax_get_external'); 				
	
				} else { 

					//get current external link
					$this->db->select('menu_link')->from('menus')->where('id_menus', 
					(int) $current_menu_id);
					$data['current_external_link'] = $this->db->get()->row();

					$this->load->view('admin/menus/ajax_get_external', $data); 	 
				}
			break;	
			
			default:
				$this->load->view('admin/menus/ajax_get_otherpage'); 	 
			break;

		}
	}

	//callback function validation add new menu
	public function _cek_existing_menu_title($str) {

		$num_rows = $this->menu_m->cek_existing_menu_title($str, $this->menu_current_id);   
		if ($num_rows != 0 ) { 
			$this->form_validation->set_message('_cek_existing_menu_title', 'Menu name Indonesian already exist !'); 
			return FALSE;
		} else {
			return TRUE;    
		}
	}

	//callback function validation add new menu english
	public function _cek_existing_menu_en_title($str) {

		$num_rows = $this->menu_m->cek_existing_menu_en_title($str, $this->menu_current_id);   
		if ($num_rows != 0 ) { 
			$this->form_validation->set_message('_cek_existing_menu_en_title', 'Menu name English already exist !'); 
			return FALSE;
		} else {
			return TRUE;    
		}
	}

	private function check_form_validation($config, $post_data) {

		if (isset($post_data['page'])) {
			
			$config[] = array(
				'field'   => 'page', 
                'label'   => 'page',
                'rules'   => 'trim|required'
			);
		}

		if (isset($post_data['external_link'])) {
			
			$config[] = array(
				'field'   => 'external_link', 
                'label'   => 'External Link',
                'rules'   => 'trim|required'
			);
		}
		return $config;
	}

	private function process_data($post_data) {

		$menu_type = $post_data['menu_type'];

		$data = array(
			'menu' => $this->security->xss_clean($post_data['menu']),
			'menu_en' => $this->security->xss_clean($post_data['menu']),
			'alias' => url_title($this->security->xss_clean($post_data['menu'])),
			'alias_en' => url_title($this->security->xss_clean($post_data['menu'])),
			'menu_type' => $menu_type,
			'status' => $post_data['status'],
			'priority' => (int) $post_data['priority'],
		);

		if ($this->input->post('parent_id') == 'no-parent') {
			$data['parent_id'] = NULL;
		} else {
			$data['parent_id'] = (int) $this->input->post('parent_id');
		}

		if ($menu_type == 'page') {
			$page_id = (int) $post_data['page'];
			$this->db->select('alias, alias_en')->from('pages')->where('id_pages', $page_id);
			$page_alias = $this->db->get()->row();
			$data['menu_link'] = 'page/' . $page_alias->alias;
			$data['menu_link_en'] = 'page/' . $page_alias->alias;
			$data['page_id'] = $page_id;
		}

		if ($menu_type == 'external') { 
			$data['menu_link'] = $this->security->xss_clean($post_data['external_link']);
			$data['menu_link_en'] = $this->security->xss_clean($post_data['external_link']);
		}

		if ($menu_type == 'homepage') { 
			$data['menu_link'] = '';
			$data['menu_link_en'] = '';
		}

		if ($menu_type == 'services') { 
			$data['menu_link'] = 'services';
			$data['menu_link_en'] = 'services';
		}

		if ($menu_type == 'industries') { 
			$data['menu_link'] = 'industries';
			$data['menu_link_en'] = 'industries';
		}

		if ($menu_type == 'location') { 
			$data['menu_link'] = 'location';
			$data['menu_link_en'] = 'location';
		}

		if ($menu_type == 'contact') { 
			$data['menu_link'] = 'contact';
			$data['menu_link_en'] = 'contact';
		}

		return $data;	
	}		
}