<?php

/**
 * Simple Tags widget class
 *
 */
class SimpleTags_Widget extends WP_Widget {
	/**
	 * Constructor widget
	 *
	 * @return void
	 * @author Amaury Balmer
	 */
	public function __construct() {
		parent::__construct( 'simpletags', __( 'Tag Cloud (Simple Tags)', 'simpletags' ),
			array(
				'classname'   => 'widget-simpletags',
				'description' => __( 'Your most used tags in cloud format with dynamic color and many options', 'simpletags' )
			)
		);
	}

	/**
	 * Check if taxonomy exist and return it, otherwise return default post tags.
	 *
	 * @param array $instance
	 *
	 * @return string
	 * @author Amaury Balmer
	 */
	public static function _get_current_taxonomy( $instance ) {
		if ( ! empty( $instance['taxonomy'] ) && taxonomy_exists( $instance['taxonomy'] ) ) {
			return $instance['taxonomy'];
		}

		return 'post_tag';
	}

	/**
	 * Default settings for widget
	 *
	 * @return void
	 * @author Amaury Balmer
	 */
	public static function get_fields() {
		return array(
			'taxonomy'    => 'post_tag',
			'title'       => __( 'Tag cloud', 'simpletags' ),
			'max'         => 45,
			'selectionby' => 'count',
			'selection'   => 'desc',
			'orderby'     => 'random',
			'order'       => 'asc',
			'smini'       => 8,
			'smax'        => 22,
			'unit'        => 'pt',
			'format'      => 'flat',
			'color'       => 1,
			'cmini'       => '#CCCCCC',
			'cmax'        => '#000000',
			'xformat'     => '',
			'adv_usage'   => ''
		);
	}

	/**
	 * Method for theme render
	 *
	 * @param array $args
	 * @param array $instance
	 *
	 * @return void
	 * @author Amaury Balmer
	 */
	public function widget( $args, $instance ) {
		extract( $args );

		$current_taxonomy = self::_get_current_taxonomy( $instance );

		// Build or not the name of the widget
		if ( ! empty( $instance['title'] ) ) {
			$title = $instance['title'];
		} else {
			if ( 'post_tag' == $current_taxonomy ) {
				$title = __( 'Tags', 'simpletags' );
			} else {
				$tax = get_taxonomy( $current_taxonomy );
				if ( isset( $tax->labels ) ) {
					$title = $tax->labels->name;
				} else {
					$title = $tax->name;
				}
			}
		}
		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

		// Set values and clean it
		foreach ( (array) self::get_fields() as $field => $field_value ) {
			${$field} = trim( $instance[ $field ] );
		}

		$param = '';

		// Selection
		$param .= ( ! empty( $selectionby ) ) ? '&selectionby=' . $selectionby : '&selectionby=count';
		$param .= ( ! empty( $selection ) ) ? '&selection=' . $selection : '&selection=desc';

		// Order
		$param .= ( ! empty( $orderby ) ) ? '&orderby=' . $orderby : '&orderby=random';
		$param .= ( ! empty( $order ) ) ? '&order=' . $order : '&order=asc';

		// Max tags
		if ( (int) $max != 0 ) {
			$param .= '&number=' . $max;
		}

		// Size Mini
		if ( (int) $smini != 0 ) {
			$param .= '&smallest=' . $smini;
		}

		// Size Maxi
		if ( (int) $smax != 0 ) {
			$param .= '&largest=' . $smax;
		}

		// Unit
		if ( ! empty( $unit ) ) {
			$param .= '&unit=' . $unit;
		}

		// Format
		if ( ! empty( $format ) ) {
			$param .= '&format=' . $format;
		}

		// Use color ?
		if ( (int) $color == 0 ) {
			$param .= '&color=false';
		}

		// Color mini
		if ( ! empty( $cmini ) ) {
			$param .= '&mincolor=' . $cmini;
		}

		// Color Max
		if ( ! empty( $cmax ) ) {
			$param .= '&maxcolor=' . $cmax;
		}

		// Xformat
		if ( ! empty( $xformat ) ) {
			$param .= '&xformat=' . $xformat;
		}

		// Advanced usage
		if ( ! empty( $adv_usage ) ) {
			if ( substr( $adv_usage, 0, 1 ) != '&' ) {
				$param .= '&';
			}

			$param .= $adv_usage;
		}


		// Taxonomy
		$param .= '&taxonomy=' . $current_taxonomy;

		echo $before_widget;
		if ( ! empty( $title ) ) {
			echo $before_title . $title . $after_title;
		}
		st_tag_cloud( apply_filters( 'simple-tags-widget', 'title=' . $param, $instance ) ); // Use Widgets title and no ST title !!
		echo $after_widget;
	}

	/**
	 * Update widget settings
	 *
	 * @param string $new_instance
	 * @param string $old_instance
	 *
	 * @return void
	 * @author Amaury Balmer
	 */
	public function update( $new_instance, $old_instance ) {
		$instance = $old_instance;

		foreach ( (array) self::get_fields() as $field => $field_value ) {
			$instance[ $field ] = strip_tags( $new_instance[ $field ] );
		}

		return $instance;
	}

	/**
	 * Admin form for widgets
	 *
	 * @param string $instance
	 *
	 * @return void
	 * @author Amaury Balmer
	 */
	public function form( $instance ) {
		//Defaults
		$instance = wp_parse_args( (array) $instance, self::get_fields() );
		?>
		<p><?php _e( 'Empty field will use default value.', 'simpletags' ); ?></p>

		<p>
			<label for="<?php echo $this->get_field_id( 'title' ); ?>">
				<?php _e( 'Title:', 'simpletags' ); ?>
				<input class="widefat" type="text" id="<?php echo $this->get_field_id( 'title' ); ?>"
				       name="<?php echo $this->get_field_name( 'title' ); ?>"
				       value="<?php echo esc_attr( $instance['title'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'max' ); ?>">
				<?php _e( 'Max tags to display: (default: 45)', 'simpletags' ); ?>
				<input class="widefat" size="20" type="text" id="<?php echo $this->get_field_id( 'max' ); ?>"
				       name="<?php echo $this->get_field_name( 'max' ); ?>"
				       value="<?php echo esc_attr( $instance['max'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'selectionby' ); ?>">
				<?php _e( 'Order by for DB selection tags:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'selectionby' ); ?>"
				        name="<?php echo $this->get_field_name( 'selectionby' ); ?>">
					<option <?php selected( $instance['selectionby'], 'name' ); ?>
						value="name"><?php _e( 'Name', 'simpletags' ); ?></option>
					<option <?php selected( $instance['selectionby'], 'slug' ); ?>
						value="slug"><?php _e( 'Slug', 'simpletags' ); ?></option>
					<option <?php selected( $instance['selectionby'], 'term_group' ); ?>
						value="term_group"><?php _e( 'Term group', 'simpletags' ); ?></option>
					<option <?php selected( $instance['selectionby'], 'count' ); ?>
						value="count"><?php _e( 'Counter (default)', 'simpletags' ); ?></option>
					<option <?php selected( $instance['selectionby'], 'random' ); ?>
						value="random"><?php _e( 'Random', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'selection' ); ?>">
				<?php _e( 'Order for DB selection tags:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'selection' ); ?>"
				        name="<?php echo $this->get_field_name( 'selection' ); ?>">
					<option <?php selected( $instance['selection'], 'asc' ); ?>
						value="asc"><?php _e( 'ASC', 'simpletags' ); ?></option>
					<option <?php selected( $instance['selection'], 'desc' ); ?>
						value="desc"><?php _e( 'DESC (default)', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'orderby' ); ?>">
				<?php _e( 'Order by for display tags:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'orderby' ); ?>"
				        name="<?php echo $this->get_field_name( 'orderby' ); ?>">
					<option <?php selected( $instance['orderby'], 'name' ); ?>
						value="name"><?php _e( 'Name', 'simpletags' ); ?></option>
					<option <?php selected( $instance['orderby'], 'count' ); ?>
						value="count"><?php _e( 'Counter', 'simpletags' ); ?></option>
					<option <?php selected( $instance['orderby'], 'random' ); ?>
						value="random"><?php _e( 'Random (default)', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'order' ); ?>">
				<?php _e( 'Order for display tags:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'order' ); ?>"
				        name="<?php echo $this->get_field_name( 'order' ); ?>">
					<option <?php selected( $instance['order'], 'asc' ); ?>
						value="asc"><?php _e( 'ASC', 'simpletags' ); ?></option>
					<option <?php selected( $instance['order'], 'desc' ); ?>
						value="desc"><?php _e( 'DESC (default)', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'smini' ); ?>">
				<?php _e( 'Font size mini: (default: 8)', 'simpletags' ); ?>
				<input class="widefat" size="20" type="text" id="<?php echo $this->get_field_id( 'smini' ); ?>"
				       name="<?php echo $this->get_field_name( 'smini' ); ?>"
				       value="<?php echo esc_attr( $instance['smini'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'smax' ); ?>">
				<?php _e( 'Font size max: (default: 22)', 'simpletags' ); ?>
				<input class="widefat" size="20" type="text" id="<?php echo $this->get_field_id( 'smax' ); ?>"
				       name="<?php echo $this->get_field_name( 'smax' ); ?>"
				       value="<?php echo esc_attr( $instance['smax'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'unit' ); ?>">
				<?php _e( 'Unit font size:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'unit' ); ?>"
				        name="<?php echo $this->get_field_name( 'unit' ); ?>">
					<option <?php selected( $instance['unit'], 'pt' ); ?>
						value="pt"><?php _e( 'Point (default)', 'simpletags' ); ?></option>
					<option <?php selected( $instance['unit'], 'px' ); ?>
						value="px"><?php _e( 'Pixel', 'simpletags' ); ?></option>
					<option <?php selected( $instance['unit'], 'em' ); ?>
						value="em"><?php _e( 'Em', 'simpletags' ); ?></option>
					<option <?php selected( $instance['unit'], '%' ); ?>
						value="%"><?php _e( 'Pourcent', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'format' ); ?>">
				<?php _e( 'Format:', 'simpletags' ); ?>
				<select id="<?php echo $this->get_field_id( 'format' ); ?>"
				        name="<?php echo $this->get_field_name( 'format' ); ?>">
					<option <?php selected( $instance['format'], 'flat' ); ?>
						value="flat"><?php _e( 'Flat (default)', 'simpletags' ); ?></option>
					<option <?php selected( $instance['format'], 'list' ); ?>
						value="list"><?php _e( 'List (UL/LI)', 'simpletags' ); ?></option>
				</select>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'color' ); ?>">
				<input class="checkbox" type="checkbox" id="<?php echo $this->get_field_id( 'color' ); ?>"
				       name="<?php echo $this->get_field_name( 'color' ); ?>" <?php checked( (int) $instance['color'], 1 ); ?>
				       value="1"/>
				<?php _e( 'Use auto color cloud:', 'simpletags' ); ?>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'cmini' ); ?>">
				<?php _e( 'Font color mini: (default: #CCCCCC)', 'simpletags' ); ?>
				<input class="widefat" type="text" id="<?php echo $this->get_field_id( 'cmini' ); ?>"
				       name="<?php echo $this->get_field_name( 'cmini' ); ?>"
				       value="<?php echo esc_attr( $instance['cmini'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'cmax' ); ?>">
				<?php _e( 'Font color max: (default: #000000)', 'simpletags' ); ?>
				<input class="widefat" type="text" id="<?php echo $this->get_field_id( 'cmax' ); ?>"
				       name="<?php echo $this->get_field_name( 'cmax' ); ?>"
				       value="<?php echo esc_attr( $instance['cmax'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'xformat' ); ?>">
				<?php _e( 'Tag link format:', 'simpletags' ); ?><br/>
				<input class="widefat" style="width: 100% !important;" type="text"
				       id="<?php echo $this->get_field_id( 'xformat' ); ?>"
				       name="<?php echo $this->get_field_name( 'xformat' ); ?>"
				       value="<?php echo esc_attr( $instance['xformat'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'adv_usage' ); ?>">
				<?php _e( 'Advanced usage:', 'simpletags' ); ?><br/>
				<input class="adv_usage" style="width: 100% !important;" type="text"
				       id="<?php echo $this->get_field_id( 'adv_usage' ); ?>"
				       name="<?php echo $this->get_field_name( 'adv_usage' ); ?>"
				       value="<?php echo esc_attr( $instance['adv_usage'] ); ?>"/>
			</label>
		</p>

		<p>
			<label for="<?php echo $this->get_field_id( 'taxonomy' ); ?>">
				<?php _e( "What to show", 'simpletags' ); ?><br/>
				<select id="<?php echo $this->get_field_id( 'taxonomy' ); ?>"
				        name="<?php echo $this->get_field_name( 'taxonomy' ); ?>" style="width:100%;">
					<?php
					foreach ( get_object_taxonomies( 'post' ) as $_taxonomy ) {
						$tax = get_taxonomy( $_taxonomy );
						if ( ! $tax->show_tagcloud || empty( $tax->labels->name ) ) {
							continue;
						}

						echo '<option ' . selected( $instance['taxonomy'], $tax->name, false ) . ' value="' . esc_attr( $tax->name ) . '">' . esc_html( $tax->labels->name ) . '</option>';
					}
					?>
				</select>
			</label>
		</p>
		<?php
	}
}