<?php

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'ReduxFramework_sorter' ) ) {
	class ReduxFramework_sorter {

		/**
		 * Field Constructor.
		 * Required - must call the parent constructor, then assign field and value to vars, and obviously call the render field function
		 *
		 * @since Redux_Options 1.0.0
		 */
		function __construct( $field, $value, $parent ) {
			if ( empty( $field ) ) {
				$field = array();
			}
			if ( empty( $value ) ) {
				$value = '';
			}
			$this->parent = $parent;
			$this->field  = $field;
			$this->value  = $value;
		}

		private function replace_id_with_slug( $arr ) {
			$new_arr = array();
			if ( ! empty( $arr ) ) {
				foreach ( $arr as $id => $name ) {

					if ( is_numeric( $id ) ) {
						$slug = strtolower( $name );
						$slug = str_replace( ' ', '-', $slug );

						$new_arr[ $slug ] = $name;
					} else {
						$new_arr[ $id ] = $name;
					}
				}
			}

			return $new_arr;
		}

		private function is_value_empty( $val ) {
			if ( ! empty( $val ) ) {
				foreach ( $val as $section => $arr ) {
					if ( ! empty( $arr ) ) {
						return false;
					}
				}
			}

			return true;
		}

		/**
		 * Field Render Function.
		 * Takes the vars and outputs the HTML for the field in the settings
		 *
		 * @since 1.0.0
		 */
		function render() {

			if ( ! is_array( $this->value ) && isset( $this->field['options'] ) ) {
				$this->value = $this->field['options'];
			}

			if ( ! isset( $this->field['args'] ) ) {
				$this->field['args'] = array();
			}

			if ( isset( $this->field['data'] ) ) {
				$this->field['options'] = $this->parent->options_defaults[ $this->field['id'] ];
			}

			// Make sure to get list of all the default blocks first
			$all_blocks = ! empty( $this->field['options'] ) ? $this->field['options'] : array();
			$temp       = array(); // holds default blocks
			$temp2      = array(); // holds saved blocks

			foreach ( $all_blocks as $blocks ) {
				$temp = array_merge( $temp, $blocks );
			}

			$temp = $this->replace_id_with_slug( $temp );

			if ( $this->is_value_empty( $this->value ) ) {
				if ( ! empty( $this->field['options'] ) ) {
					$this->value = $this->field['options'];
				}
			}

			$sortlists = $this->value;
			if ( ! empty( $sortlists ) ) {
				foreach ( $sortlists as $section => $arr ) {
					$arr                     = $this->replace_id_with_slug( $arr );
					$sortlists[ $section ]   = $arr;
					$this->value[ $section ] = $arr;
				}
			}

			if ( is_array( $sortlists ) ) {
				foreach ( $sortlists as $sortlist ) {
					$temp2 = array_merge( $temp2, $sortlist );
				}

				// now let's compare if we have anything missing
				foreach ( $temp as $k => $v ) {
					// k = id/slug
					// v = name
					if ( ! empty( $temp2 ) ) {
						if ( ! array_key_exists( $k, $temp2 ) ) {
							if ( isset( $sortlists['Disabled'] ) ) {
								$sortlists['Disabled'][ $k ] = $v;
							} else {
								$sortlists['disabled'][ $k ] = $v;
							}
						}
					}
				}

				// now check if saved blocks has blocks not registered under default blocks
				foreach ( $sortlists as $key => $sortlist ) {
					// key = enabled, disabled, backup
					// sortlist = id => name
					foreach ( $sortlist as $k => $v ) {
						// k = id
						// v = name
						if ( ! array_key_exists( $k, $temp ) ) {
							unset( $sortlist[ $k ] );
						}
					}
					$sortlists[ $key ] = $sortlist;
				}

				// assuming all sync'ed, now get the correct naming for each block
				foreach ( $sortlists as $key => $sortlist ) {
					foreach ( $sortlist as $k => $v ) {
						$sortlist[ $k ] = $temp[ $k ];
					}
					$sortlists[ $key ] = $sortlist;
				}

				if ( $sortlists ) {
					echo '<fieldset id="' . esc_attr( $this->field['id'] ) . '" class="redux-sorter-container redux-sorter">';

					foreach ( $sortlists as $group => $sortlist ) {
						$filled = '';

						if ( isset( $this->field['limits'][ $group ] ) && count( $sortlist ) >= $this->field['limits'][ $group ] ) {
							$filled = ' filled';
						}

						echo '<ul id="' . esc_attr( $this->field['id'] . '_' . $group ) . '" class="sortlist_' . esc_attr( $this->field['id'] . $filled ) . '" data-id="' . esc_attr( $this->field['id'] ) . '" data-group-id="' . esc_attr( $group ) . '">';
						echo '<h3>' . esc_html( $group ) . '</h3>';

						if ( ! isset( $sortlist['placebo'] ) ) {
							array_unshift( $sortlist, array( 'placebo' => 'placebo' ) );
						}

						foreach ( $sortlist as $key => $list ) {

							echo '<input class="sorter-placebo" type="hidden" name="' . esc_attr( $this->field['name'] ) . '[' . $group . '][placebo]' . esc_attr( $this->field['name_suffix'] ) . '" value="placebo">';

							if ( $key != 'placebo' ) {

								// echo '<li id="' . $key . '" class="sortee">';
								echo '<li id="sortee-' . esc_attr( $key ) . '" class="sortee" data-id="' . esc_attr( $key ) . '">';
								echo '<input class="position ' . esc_attr( $this->field['class'] ) . '" type="hidden" name="' . esc_attr( $this->field['name'] . '[' . $group . '][' . $key . ']' . $this->field['name_suffix'] ) . '" value="' . esc_attr( $list ) . '">';
								echo esc_html( $list );
								echo '</li>';
							}
						}

						echo '</ul>';
					}
					echo '</fieldset>';
				}
			}
		}

		function enqueue() {
			if ( $this->parent->args['dev_mode'] ) {
				wp_enqueue_style(
					'redux-field-sorder-css',
					ReduxFramework::$_url . 'inc/fields/sorter/field_sorter.css',
					array(),
					time(),
					'all'
				);
			}

			wp_enqueue_script(
				'redux-field-sorter-js',
				ReduxFramework::$_url . 'inc/fields/sorter/field_sorter' . Redux_Functions::isMin() . '.js',
				array( 'jquery', 'redux-js', 'jquery-ui-sortable' ),
				time(),
				true
			);
		}

		/**
		 * Functions to pass data from the PHP to the JS at render time.
		 *
		 * @return array Params to be saved as a javascript object accessable to the UI.
		 * @since  Redux_Framework 3.1.5
		 */
		function localize( $field, $value = '' ) {

			$params = array();

			if ( isset( $field['limits'] ) && ! empty( $field['limits'] ) ) {
				$params['limits'] = $field['limits'];
			}

			if ( empty( $value ) ) {
				$value = $this->value;
			}
			$params['val'] = $value;

			return $params;
		}
	}
}
