<?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();
        $this->load->model('blog_m');
        $this->load->model('category_m');
        $this->load->helper('form');
    }

    //this is to list all blog
    public function index()
    {

        if (isset($_POST['submit'])) {

            $this->imageupload_indexpage = TRUE;

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

            //check & processing image banner upload files	
            if ($_FILES['userfile']['size'] !== 0) {

                $config['upload_path'] = './uploads/blog/';
                $config['allowed_types'] = 'jpg|png';
                $config['max_size']    = '1024';
                $config['max_width'] = $image_dimension->blog_image_width;
                $config['max_height'] = $image_dimension->blog_image_height;

                $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(
                'blog_landingpage_link' => $this->security->xss_clean($this->input->post('banner_link')),
                'blog_landingpage_description'    => $this->security->xss_clean($this->input->post('description')),
            );

            //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_description, blog_landingpage_image, blog_landingpage_link')->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)
        );

        $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;
        }

        //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();
        $this->data['parent_categories'] = $this->category_m->get_parent_categories();
        $this->data['categories'] = $this->category_m->get_new();

        //validation in action
        //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);
        $this->form_validation->set_error_delimiters('<div class="error">', '</div>');

        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'] = 'jpg|png';
                $config['max_size']    = '1024';
                $config['max_width'] = $image_dimension->blog_thumbnail_width;
                $config['max_height'] = $image_dimension->blog_thumbnail_height;

                $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'] = 'jpg|png';
                $config['max_size']    = '1024';
                $config['max_width'] = $image_dimension->blog_image_width;
                $config['max_height'] = $image_dimension->blog_image_height;

                $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('author'), $this->input->post('status'), $this->input->post('populer'), $this->input->post('description'), $this->image1_filename, $this->image2_filename, $this->input->post('video'), $this->input->post('status_display'), $this->input->post('meta_description'), $this->input->post('meta_keywords'), $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;">News & Events Add Successful</p>');

            redirect('admin/blog');
        }

        $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/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);
        $this->form_validation->set_error_delimiters('<div class="error">', '</div>');

        $this->data['categories'] = $this->db->select('*')->from('blog')->where('id_blog', $id)->get()->row();
        $this->data['parent_categories'] = $this->category_m->get_parent_categories();

        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'] = 'jpg|png';
                $config['max_size']    = '1024';
                $config['max_width'] = $image_dimension->blog_thumbnail_width;
                $config['max_height'] = $image_dimension->blog_thumbnail_height;

                $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/edit/' . $id);
                } 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'] = 'jpg|png';
                $config['max_size']    = '1024';
                $config['max_width'] = $image_dimension->blog_image_width;
                $config['max_height'] = $image_dimension->blog_image_height;

                $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/edit/' . $id);
                } else {
                    $image2 = $this->upload->data();
                    $this->image2_filename = $image2['file_name'];
                }
            }

            $data = $this->table_data_processing($this->input->post('blog_name'), $this->input->post('author'), $this->input->post('status'), $this->input->post('populer'), $this->input->post('description'), $this->image1_filename, $this->image2_filename, $this->input->post('video'), $this->input->post('status_display'), $this->input->post('meta_description'), $this->input->post('meta_keywords'), $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;">News & Events Edit Successful</p>');

            redirect('admin/blog/edit/' .  $id);
        }

        $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/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;">News & Events Delete Successful</p>');
        redirect('admin/blog');
    }

    private function table_data_processing(
        $blog_name,
        $author,
        $status,
        $populer,
        $description,
        $image1_filename,
        $image2_filename,
        $video,
        $status_display,
        $meta_description,
        $meta_keywords,
        $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),
            'blog_en'         => $this->security->xss_clean($this->input->post('blog_name_en')),
            'author'        => $author,
            'alias'         => url_title($blog_name),
            'alias_en'         => url_title($this->input->post('blog_name_en')),
            'status'         => $status,
            'populer'         => $populer,
            'description'     => $description,
            'video'            => $video,
            'status_display' => $status_display,
            'description_en' => $this->security->xss_clean($this->input->post('description_en')),
            'publish_date'     => $publish_date,
        );

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

    public function _cek_existing_blog_title_en($str)
    {

        $num_rows = $this->blog_m->cek_existing_blog_title_en($str, $this->blog_current_id);
        if ($num_rows != 0) {
            $this->form_validation->set_message('_cek_existing_blog_title_en', 'blog name english 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);
    }
}