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

class Blog extends Admin_Controller 
{
		//this property is used for validating existing blog title on call back edit blog
		private $blog_current_id = NULL;
		private $image1_filename = NULL;
		private $image2_filename = NULL;

		//this property is to mark whether we are uploading image in the index page
		private $imageupload_indexpage = FALSE; 
			
		function __construct() 
		{ 
				parent::__construct(); 	
				
				if (!in_array('blog', $this->allowed_sections)) redirect('admin/dashboard'); 
				
				$this->load->model('blog_m'); 
				$this->load->helper('form'); 
		}
			
		//this is to list all blog
		public function index() 
		{
				if (isset($_POST['submit'])) 
				{
						$this->imageupload_indexpage = TRUE;

						//check & processing image banner upload files	
						if ($_FILES['userfile']['size'] !== 0) 
						{  
								$config['upload_path'] = './uploads/blog/'; 
								$config['allowed_types'] = '*';  
								// $config['allowed_types'] = 'jpg|png|jpeg|webp'; 
								$config['max_size']	= '800';
								
								$this->load->library('upload', $config);  

								if ( ! $this->upload->do_upload()) 
								{
										//echo $this->upload->display_errors(); die();
											
										$this->session->set_flashdata('banner_error', '<br>
											<p style="background:orange; color:white; padding:5px; font-weight:bold;">Image Upload Error. Wrong format or size.</p>');

										if ($this->blog_current_id != NULL) 
										{
												redirect('admin/blog/edit/' . $this->blog_current_id);
										} 
										elseif($this->blog_current_id == NULL && $this->imageupload_indexpage == FALSE) 
										{
												redirect('admin/blog/add');
										} 
										elseif($this->blog_current_id == NULL && $this->imageupload_indexpage == TRUE) 
										{
												redirect('admin/blog');
										}
								
								} else 
								{
										$image = $this->upload->data();
										$image_filename = $image['file_name']; 	 
								}	
						}

						//store image information to configuration table
						$data = array();

						//image upload
						if (isset($image_filename)) 
						{
								$data['blog_landingpage_image'] = $image_filename; 
								$this->db->where('id_configuration', 1);
								$this->db->update('configuration', $data); 
						} 

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

				//get landingpage banner image, description and link
				$this->db->select('blog_landingpage_image')->from('configuration')->where('id_configuration', 1);
				$this->data['blog_landingpage'] = $this->db->get()->row();
				
				//pagination in action. 100 results per page 
				$this->load->library('pagination');
				$config['base_url'] = base_url() . 'admin/blog/index';
				$config['total_rows'] = $this->blog_m->record_count(); 
				$config['per_page'] = 100;
				$config["uri_segment"] = 4;
				$config['num_tag_open'] = '<span style="padding-left:10px; padding-right:10px">';
				$config['num_tag_close'] = '</span>';

				$this->pagination->initialize($config);
				$this->data['blog'] = $this->blog_m->get_all_blog($config["per_page"], 
				$this->uri->segment(4));   

				//load view
				$this->data['subview'] = 'admin/blog/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 blog 
		public function add() 
		{
				$this->data['blog'] = $this->blog_m->get_new();	
				
				//validation check in action 
				$config = $this->blog_m->rules; 

				$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); 

				if($this->form_validation->run($this) == TRUE) 
				{
						//check & processing IMAGE INTRO
						if ($_FILES['image1']['size'] !== 0) 
						{ 	
								$config = array();
								$config['upload_path'] = './uploads/blog/';  
								$config['allowed_types'] = '*';  
								// $config['allowed_types'] = 'jpg|png|jpeg|webp'; 
								// $config['max_size']	= '500'; 

								$this->load->library('upload', $config);  
								$this->upload->initialize($config); 

								if ( ! $this->upload->do_upload('image1')) 
								{
										// return the error message and kill the script
										echo $this->upload->display_errors(); 

										$this->session->set_flashdata('image1-error', '<br>
										<p style="background:red; color:white; padding:5px; font-weight:bold;">Image Upload Error. Wrong format or size.</p>');
										redirect('admin/blog/add');
								} 
								else 
								{
										$image1 = $this->upload->data();
										$this->image1_filename = $image1['file_name']; 	
								} 
						}

						//check & processing IMAGE TOP BANNER
						if ($_FILES['image2']['size'] !== 0) 
						{ 	
								$config = array();
								$config['upload_path'] = './uploads/blog/'; 
								$config['allowed_types'] = '*';  
								// $config['allowed_types'] = 'jpg|png|jpeg|webp'; 
								$config['max_size']	= '500'; 

								$this->load->library('upload', $config); 
								$this->upload->initialize($config); 

								if ( ! $this->upload->do_upload('image2')) 
								{
										// return the error message and kill the script
										//echo $this->upload->display_errors(); 

										$this->session->set_flashdata('image2-error', '<br>
											<p style="background:red; color:white; padding:5px; font-weight:bold;">Image Upload Error. Wrong format or size.</p>');
										redirect('admin/blog/add');
								} 
								else 
								{
										$image2 = $this->upload->data();
										$this->image2_filename = $image2['file_name']; 
								} 
						}

						$data = $this->table_data_processing($this->input->post('blog_name'), $this->input->post('status'), $this->input->post('description'), $this->image1_filename, $this->image2_filename, $this->input->post('meta_description'), $this->input->post('publish_date'));
					
						$this->blog_m->add_blog($data);

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

						redirect('admin/blog');
				} 

				//get portfolios categories
				$this->data['categories'] = $this->db->select('id, name')->from('blogs_category')->order_by('priority', 'ASC')->get()->result_array();
				
				$this->data['subview'] = 'admin/blog/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 blog in admin
		public function edit($id = NULL) 
		{
				if ($id == NULL) { show_404(); }

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

				$this->data['blog'] = $this->blog_m->get($id);	

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

				//validation check in action
				$config = $this->blog_m->rules;

				$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); 

				if($this->form_validation->run($this) == TRUE) 
				{
						//get max image width and height from configuration table
						$this->db->select('blog_image_width, blog_image_height, blog_thumbnail_width, blog_thumbnail_height')->from('configuration')->where('id_configuration', 1);
						$image_dimension = $this->db->get()->row();

						//check & processing IMAGE INTRO
						if ($_FILES['image1']['size'] !== 0) 
						{ 	
								$config['upload_path'] = './uploads/blog/'; 
								$config['allowed_types'] = '*';  
								// $config['allowed_types'] = 'jpg|png|jpeg|webp'; 
								$config['max_size']	= '500'; 

								$this->load->library('upload', $config); 

								if ( ! $this->upload->do_upload('image1')) 
								{
										// return the error message and kill the script
										echo $this->upload->display_errors(); 

										$this->session->set_flashdata('image1-error', '<br>
											<p style="background:red; color:white; padding:5px; font-weight:bold;">Image Upload Error. Wrong format or size.</p>');
										redirect('admin/blog/add');
								} 
								else 
								{
										$image1 = $this->upload->data();
										$this->image1_filename = $image1['file_name']; 
								} 
						}

						//check & processing IMAGE TOP BANNER
						if ($_FILES['image2']['size'] !== 0) 
						{ 	
								$config['upload_path'] = './uploads/blog/'; 
								$config['allowed_types'] = '*';  
								// $config['allowed_types'] = 'jpg|png|jpeg|webp'; 
								$config['max_size']	= '500'; 

								$this->load->library('upload', $config); 

								if ( ! $this->upload->do_upload('image2')) 
								{
										// return the error message and kill the script
										//echo $this->upload->display_errors(); 

										$this->session->set_flashdata('image2-error', '<br>
											<p style="background:red; color:white; padding:5px; font-weight:bold;">Image Upload Error. Wrong format or size.</p>');
										redirect('admin/blog/add');
								} 
								else 
								{
										$image2 = $this->upload->data();
										$this->image2_filename = $image2['file_name']; 
								} 
						}

						$data = $this->table_data_processing($this->input->post('blog_name'), $this->input->post('status'), $this->input->post('description'), $this->image1_filename, $this->image2_filename, $this->input->post('meta_description'), $this->input->post('publish_date'));

						$this->blog_m->edit_blog($id, $data); 

						$this->session->set_flashdata('success', '<br><p style="background:green; color:white; padding:5px; font-weight:bold;">Blog Edit Successful</p>');
						
						redirect('admin/blog/edit/' .  $id);
				} 

				//get portfolios categories
				$this->data['categories'] = $this->db->select('id, name')->from('blogs_category')->order_by('priority', 'ASC')->get()->result_array();
				
				$this->data['subview'] = 'admin/blog/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 blog
		public function delete($id) 
		{
				//check if id exist. If not exist, show 404.
				$count = $this->blog_m->count_exist($id);
				
				if ($count == 0) 
				{ //page not exist
						show_404();
				}		

				//delete image from server
				//check if there is an existing image
				$this->db->select('image1, image2')->from('blog')->where('id_blog', (int) $id);
				$image = $this->db->get()->row();
				
				if ($image->image1 != '') 
				{
						//Delete the actual image file from server. FCPATH is codeigniter base path
						unlink(FCPATH .'/uploads/blog/'. $image->image1);
				} 

				if ($image->image2 != '') 
				{
						//Delete the actual image file from server. FCPATH is codeigniter base path
						unlink(FCPATH .'/uploads/blog/'. $image->image2);
				} 

				//delete blog
				$this->blog_m->delete($id); 

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

		private function table_data_processing($blog_name, $status, $description, 
			$image1_filename, $image2_filename, $meta_description, $publish_date) 
		{
				$publish_date = explode('-',$publish_date);	
				$publish_date = $publish_date[2] . '-' . $publish_date[1] . '-' . $publish_date[0];

				$data = array(
					'blog' 						=> $this->security->xss_clean($blog_name),
					'alias' 		=> url_title($blog_name),
					'status' 		=> $status,
					'description' 	=> $description,
					'publish_date' 	=> $publish_date,	
					'meta_description' 	=> $meta_description,
					'id_blogs_category' 	=> $this->input->post('category_id'),
				);

				//image upload
				if (isset($image1_filename)) 
				{
						$data['image1'] = $image1_filename; 
				} 

				//image upload
				if (isset($image2_filename)) 
				{
						$data['image2'] = $image2_filename; 
				} 

				return $data;
		}

		//callback function validation add new blog
		//make it private by adding _
		public function _cek_existing_blog_title($str) 
		{
				$num_rows = $this->blog_m->cek_existing_blog_title($str, $this->blog_current_id);  

				if ($num_rows != 0 ) 
				{  
						$this->form_validation->set_message('_cek_existing_blog_title', 'blog name already exist !');
						return FALSE;
				} else {
						return TRUE;   
				}
		}

		//To delete blog landingpage banner image file from server, and from database
		public function delete_landingpage_image() 
		{ 
				//get image file name for deletion
				$this->db->select('blog_landingpage_image')->from('configuration')->where('id_configuration', 1);
				$image = $this->db->get()->row()->blog_landingpage_image;

				//Delete the actual image file from server. FCPATH is codeigniter base path
				unlink(FCPATH .'/uploads/blog/'. $image);

				//Delete image field from database
				$data = array( 
					'blog_landingpage_image' => '',
				);

				$this->db->where('id_configuration', 1);
				$this->db->update('configuration', $data);	

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

		//To delete blog image file from server, and from database
		public function delete_image($id = NULL, $image_type = NULL) 
		{ 
				$count = $this->blog_m->count_exist($id);

				if ($id == NULL || $count == 0) {	redirect('admin/blog'); }

				if ($image_type == NULL) {redirect('admin/blog'); }

				//get image file name for deletion
				$this->db->select('image1, image2')->from('blog')->where('id_blog', (int) $id);
				$image = $this->db->get()->row();

				if($image_type == 'image1') 
				{
						//Delete the actual image file from server. FCPATH is codeigniter base path
						unlink(FCPATH .'/uploads/blog/'. $image->image1);

						//Delete image field from database
						$data = array( 
							'image1' => '',
						);
				} 
				elseif($image_type == 'image2') 
				{
						//Delete the actual image file from server. FCPATH is codeigniter base path
						unlink(FCPATH .'/uploads/blog/'. $image->image2);

						//Delete image field from database
						$data = array( 
							'image2' => '',
						);
				}

				$this->db->where('id_blog', (int) $id);
				$this->db->update('blog', $data);	

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