<?php
/**
 * Bosa Education Zone Widget Base Widget Class
 * @link http://codex.wordpress.org/Widgets_API#Developing_Widgets
 * @since Bosa Education Zone 1.0.0
 */

if( ! class_exists( 'Bosa_Education_Zone_Base_Widget' ) ):

class Bosa_Education_Zone_Base_Widget extends WP_Widget {
   
   protected $fields;

   protected function generate_fields(){
   		
   		foreach( $this->fields as $id => $field ): $field[ 'id' ] = $id; ?>
	   		<p>
        <?php if( $field[ 'type'] != 'checkbox' && isset( $field[ 'label' ] ) ): ?>
	   			<label for="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>">
	   				<?php echo esc_html( $field[ 'label' ] ); ?>
	   			</label><br>
        <?php endif; ?>
   		<?php
        switch ( $field[ 'type' ] ) {
            case 'dropdown-posts':

             $this->get_html_dropdown_posts( $field );
            break;

            case 'dropdown-pages':

                $this->get_html_dropdown_pages( $field );
			break;

            case 'dropdown-menus':
                $this->get_html_dropdown_menus( $field );
            break;

            case 'dropdown-categories':
                $this->get_html_dropdown_categories( $field );
            break;
            case 'text':
            case 'number':
            case 'email':
            case 'file':
            case 'url':

            			$this->get_html_text( $field );	
            			break;

            case 'select':

            	$this->get_html_select( $field );
            	break;

            case 'radio':

            	$this->get_html_radio( $field );
            	break;

            case 'checkbox':

            	$this->get_html_checkbox( $field );
            	break;

            case 'textarea':

            	$this->get_html_textarea( $field );
            	break;
           case 'description':
            $this->get_html_description( $field );
             break; 
   				default:

   					echo esc_html__( 'Type Not Supported.', 'bosa-education-zone' );
   					break;
   			}
   			?>
            <?php if( $field[ 'type'] == 'checkbox' && isset( $field[ 'label' ] ) ): ?>
                    <label for="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>">
                        <?php echo esc_html( $field[ 'label' ] ); ?>
                    </label>
            <?php endif; ?>
   			</p>
   		<?php
   		endforeach;
   		
   }

   public function get_html_dropdown_categories( $field ) {
       $dropdown = wp_dropdown_categories(
           array(
               'name'              => 'dropdown-categories-' . $this->get_field_id( $field[ 'id' ] ),
               'echo'              => 0,
               'show_option_none'  => esc_html__( '&mdash; Select &mdash;', 'bosa-education-zone' ),
               'option_none_value' => '0',
               'selected'          => esc_html( $field[ 'current_value' ] ),
           )
       );
   
       # Hackily add in the data link parameter.
       $dropdown = str_replace( '<select', '<select class="widefat" name="' . $this->get_field_name( $field[ 'id' ] ).'"', $dropdown );
       echo $dropdown; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
   }

   public function get_html_description( $field ){
    if( isset( $field[ 'description' ] ) ):
    ?>

    <p>
      <?php echo esc_html( $field[ 'description' ] ); ?>
    </p>
    <?php
    endif;
   }
   public function get_html_textarea( $field ){
    ?>
    <textarea class="widefat" rows="8" name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>"><?php echo wp_kses_post( $field[ 'current_value' ] ); ?>
    </textarea>
    <?php     
   }

   public function get_html_checkbox( $field ){
   		?>
		<input type="checkbox" name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>" <?php checked( ! empty( $field[ 'current_value' ] ) ); ?>>
   		<?php
   }

   public function get_html_radio( $field ){
   		?>
   			
		<?php foreach( $field[ 'choices' ] as $key => $value ): ?>

			<input type="radio"
				id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ) . '-' . esc_attr( $key ); ?>"
				name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" 
				value="<?php echo esc_attr( $key ); ?>" <?php checked( $key, $field[ 'current_value' ] ); ?>>

			<label for="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ) . '-' . esc_attr( $key ); ?>"><?php echo esc_html( $value ); ?></label>

		<?php endforeach; ?>
   		
   		<?php
   }

   public function get_html_select( $field ){
   		?>
		<select name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" 
			id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>" class="widefat">

			<?php foreach( $field[ 'choices' ] as $key => $value ): ?>
				<option value="<?php echo esc_attr( $key ); ?>" 
					<?php selected( $key, $field[ 'current_value' ] ); ?>>
					<?php echo esc_html( $value ); ?>
				</option>
			<?php endforeach; ?>
		</select>
   		<?php
   }

   public function get_html_text( $field ){
   		?>
   		
		<input type="<?php echo esc_attr( $field[ 'type' ] ); ?>" class="widefat" name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" 
      <?php
        if( 'number' == $field[ 'type' ] ){

          if( isset( $field[ 'max' ] ) ){
            echo 'max="' . absint( $field[ 'max' ] ) . '"';
          }

          if( isset( $field[ 'min' ] ) ){
            echo 'min="' . absint( $field[ 'min' ] ) . '"';
          }
        }
      ?> 
			id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>"
			value="<?php echo esc_attr( $field[ 'current_value' ] ); ?>"
			>
   		<?php
   		
   }

   public function get_html_dropdown_pages( $field ){
       $args = array(
        'name'     => $this->get_field_name( $field[ 'id' ] ),
        'id'       => $this->get_field_id( $field[ 'id' ] ),
        'class'    => 'widefat',
        'selected' => $field[ 'current_value' ]
      );
      wp_dropdown_pages( $args ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
   }

   public function get_html_dropdown_posts( $field, $post_type = 'post' ){

		$posts = get_posts( array( 
			'posts_per_page' => -1, // phpcs:ignore WPThemeReview.CoreFunctionality.PostsPerPage.posts_per_page_posts_per_page
            'post_type'      => $post_type,
			'post_status'    => 'publish'
		) );
		?>

		<select class="widefat" name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>">
		
            <option value=''><?php echo esc_html( $field[ 'label' ] ); ?> </option>
            <?php foreach ( $posts as $post ): ?>

				<option value="<?php echo esc_attr( $post->ID ); ?>" 
				    <?php selected( $post->ID, $field[ 'current_value' ] ); ?>>
				    <?php echo esc_html( $post->post_title ); ?>
				</option>

			<?php endforeach; ?>
		</select>
		<?php
   }

   public function get_html_dropdown_menus( $field ){
        // Get menus
        $menus = wp_get_nav_menus();
        ?>
            <select class="widefat" id="<?php echo esc_attr( $this->get_field_id( $field[ 'id' ] ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( $field[ 'id' ] ) ); ?>">
                <option value="0"><?php echo esc_html__( '&mdash; Select &mdash;', 'bosa-education-zone' ); ?></option>
                <?php foreach ( $menus as $menu ) : ?>
                    <option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $field[ 'current_value' ], $menu->term_id ); ?>>
                        <?php echo esc_html( $menu->name ); ?>
                    </option>
                <?php endforeach; ?>
            </select>
        <?php 
   }

   public function update( $new_instance, $old_instance ) {

        $instance = array();
       
        foreach( $this->fields as $id => $field ):
            $instance[ $id ] = $this->sanitize( $field, $new_instance[ $id ] );
        endforeach;

        return $instance;
   }

   public function form( $instance ){
       
      foreach( $this->fields as $key => $field ){

        $this->fields[ $key ][ 'default' ] = isset( $field[ 'default' ] ) ? $field[ 'default' ] : null;
        $this->fields[ $key ][ 'current_value' ] = isset( $instance[ $key ] ) ? $instance[ $key ] : $this->fields[ $key ][ 'default' ];
      }

      $this->generate_fields();
   }

  public function sanitize( $field, $value ){

    if ( isset( $field[ 'sanitize_callback' ] ) && is_callable( $field[ 'sanitize_callback' ] ) ) {

        $value = call_user_func( $field[ 'sanitize_callback' ], $field, $value );
        return $value;
    }

    if( ! isset( $field[ 'default' ] ) ){
      $field[ 'default' ] = null;
    }

    switch( $field[ 'type' ] ){ 

        case 'dropdown-posts':
        case 'dropdown-pages':
        case 'dropdown-categories':
            $value = absint( $value );
        break;

        case 'image':
        case 'url':
            $value = esc_url_raw( $value );
        break;

        case 'email':
            $value = sanitize_email( $value );
        break;
          
    	case 'text':
            $value = sanitize_text_field( $value );
        break;

        case 'number':

            if( is_numeric( $value ) ){

              if( isset( $field[ 'max' ] ) ){
                if( $value > $field[ 'max' ] ){
                  $value = $field[ 'default' ];
                }
              }

              if( isset( $field[ 'min' ] ) ){
                if( $value < $field[ 'min' ] ){
                  $value = $field[ 'default' ];
                }
              }

            }else{

              $value = $field[ 'default' ];
            }

    	break;

    	case 'select':
    	case 'radio':
    		$value = esc_attr( $value );
    		$value = array_key_exists( $value, $field[ 'choices' ] ) ? $value : $field[ 'default' ];
    		break;

    	case 'checkbox':
    		$value = ! empty( $value );
    		break;
    		
    	case 'textarea':
    		$value = wp_kses_post( $value );
        break;
    	}
    	return $value;
  }

  public function init_defaults( $instance ){
    
    if( ! is_array( $instance ) ){
        $instance = array();
    }

    foreach( $this->fields as $id => $field ){

        if( !isset( $instance[ $id ] ) ){

            $instance[ $id ] = isset( $field[ 'default' ] ) ? $field[ 'default' ] : null;
        }
        
        $instance[ $id ] = $this->sanitize( $field, $instance[ $id ] );
    }
   
    return $instance;
  }
}

endif;
