<?php
if ( ! defined('ABSPATH') ) {
	die( 'You are not allowed to call this page directly.' );
}

class FrmXMLHelper {

	public static function get_xml_values( $opt, $padding ) {
		if ( is_array( $opt ) ) {
			foreach ( $opt as $ok => $ov ) {
				echo "\n" . $padding;
				$tag = ( is_numeric( $ok ) ? 'key:' : '' ) . $ok;
				echo '<' . $tag . '>';
				self::get_xml_values( $ov, $padding . '    ' );
				if ( is_array( $ov ) ) {
					echo "\n" . $padding;
				}
				echo '</' . $tag . '>';
			}
		} else {
			echo self::cdata( $opt );
		}
	}

	public static function import_xml( $file ) {
        $defaults = array(
            'forms' => 0, 'fields' => 0, 'terms' => 0,
            'posts' => 0, 'views' => 0, 'actions' => 0,
            'styles' => 0,
        );

        $imported = array(
            'imported' => $defaults,
			'updated'  => $defaults,
			'forms'    => array(),
			'terms'    => array(),
        );

        unset($defaults);

		if ( ! defined( 'WP_IMPORTING' ) ) {
            define('WP_IMPORTING', true);
        }

		if ( ! class_exists( 'DOMDocument' ) ) {
            return new WP_Error( 'SimpleXML_parse_error', __( 'Your server does not have XML enabled', 'formidable' ), libxml_get_errors() );
        }

        $dom = new DOMDocument;
		$success = $dom->loadXML( file_get_contents( $file ) );
		if ( ! $success ) {
			return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this XML file', 'formidable' ), libxml_get_errors() );
		}

		if ( ! function_exists('simplexml_import_dom') ) {
			return new WP_Error( 'SimpleXML_parse_error', __( 'Your server is missing the simplexml_import_dom function', 'formidable' ), libxml_get_errors() );
		}

		$xml = simplexml_import_dom( $dom );
		unset( $dom );

		// halt if loading produces an error
		if ( ! $xml ) {
			return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this XML file', 'formidable' ), libxml_get_errors() );
		}

        // add terms, forms (form and field ids), posts (post ids), and entries to db, in that order
		foreach ( array( 'term', 'form', 'view' ) as $item_type ) {
            // grab cats, tags, and terms, or forms or posts
            if ( isset($xml->{$item_type} ) ) {
				$function_name = 'import_xml_' . $item_type . 's';
				$imported = self::$function_name( $xml->{$item_type}, $imported );
				unset( $function_name, $xml->{$item_type} );
            }
        }

	    $return = apply_filters('frm_importing_xml', $imported, $xml );

	    return $return;
    }

	public static function import_xml_terms( $terms, $imported ) {
        foreach ( $terms as $t ) {
			if ( term_exists((string) $t->term_slug, (string) $t->term_taxonomy) ) {
			    continue;
			}

			$parent = self::get_term_parent_id( $t );

			$term = wp_insert_term( (string) $t->term_name, (string) $t->term_taxonomy, array(
                'slug'          => (string) $t->term_slug,
                'description'   => (string) $t->term_description,
				'parent'        => empty( $parent ) ? 0 : $parent,
            ));

			if ( $term && is_array( $term ) ) {
                $imported['imported']['terms']++;
				$imported['terms'][ (int) $t->term_id ] = $term['term_id'];
            }

			unset( $term, $t );
		}

		return $imported;
    }

	/**
	 * @since 2.0.8
	 */
	private static function get_term_parent_id( $t ) {
		$parent = (string) $t->term_parent;
		if ( ! empty( $parent ) ) {
			$parent = term_exists( (string) $t->term_parent, (string) $t->term_taxonomy );
			if ( $parent ) {
				$parent = $parent['term_id'];
			} else {
				$parent = 0;
			}
		}
		return $parent;
	}

	public static function import_xml_forms( $forms, $imported ) {
		$child_forms = array();

		// Import child forms first
		self::put_child_forms_first( $forms );

		foreach ( $forms as $item ) {
            $form = array(
                'id'            => (int) $item->id,
                'form_key'      => (string) $item->form_key,
                'name'          => (string) $item->name,
                'description'   => (string) $item->description,
                'options'       => (string) $item->options,
                'logged_in'     => (int) $item->logged_in,
                'is_template'   => (int) $item->is_template,
                'default_template' => (int) $item->default_template,
                'editable'      => (int) $item->editable,
                'status'        => (string) $item->status,
                'parent_form_id' => isset($item->parent_form_id) ? (int) $item->parent_form_id : 0,
                'created_at'    => date('Y-m-d H:i:s', strtotime((string) $item->created_at)),
            );

            $form['options'] = FrmAppHelper::maybe_json_decode($form['options']);

			self::update_custom_style_setting_on_import( $form );

            // if template, allow to edit if form keys match, otherwise, creation date must also match
			$edit_query = array( 'form_key' => $form['form_key'], 'is_template' => $form['is_template'] );
            if ( ! $form['is_template'] ) {
                $edit_query['created_at'] = $form['created_at'];
            }

            $edit_query = apply_filters('frm_match_xml_form', $edit_query, $form);

            $this_form = FrmForm::getAll($edit_query, '', 1);
            unset($edit_query);

            if ( ! empty( $this_form ) ) {
                $old_id = $form_id = $this_form->id;
                FrmForm::update($form_id, $form );
                $imported['updated']['forms']++;
                // Keep track of whether this specific form was updated or not
				$imported['form_status'][ $form_id ] = 'updated';

				$form_fields = FrmField::get_all_for_form( $form_id, '', 'exclude', 'exclude' );
                $old_fields = array();
                foreach ( $form_fields as $f ) {
					$old_fields[ $f->id ] = $f;
					$old_fields[ $f->field_key ] = $f->id;
                    unset($f);
                }
                $form_fields = $old_fields;
                unset($old_fields);
            } else {
                $old_id = false;
                //form does not exist, so create it
				$form_id = FrmForm::create( $form );
                if ( $form_id ) {
                    $imported['imported']['forms']++;
                    // Keep track of whether this specific form was updated or not
					$imported['form_status'][ $form_id ] = 'imported';
					self::track_imported_child_forms( (int) $form_id, $form['parent_form_id'], $child_forms );
                }
            }

    		self::import_xml_fields( $item->field, $form_id, $this_form, $form_fields, $imported );

    		// Delete any fields attached to this form that were not included in the template
    		if ( isset( $form_fields ) && ! empty( $form_fields ) ) {
				foreach ( $form_fields as $field ) {
                    if ( is_object($field) ) {
                        FrmField::destroy($field->id);
                    }
                    unset($field);
                }
                unset($form_fields);
            }

		    // Update field ids/keys to new ones
			do_action( 'frm_after_duplicate_form', $form_id, $form, array( 'old_id' => $old_id ) );

			$imported['forms'][ (int) $item->id ] = $form_id;

            // Send pre 2.0 form options through function that creates actions
            self::migrate_form_settings_to_actions( $form['options'], $form_id, $imported, $switch = true );

		    unset($form, $item);
		}

		self::maybe_update_child_form_parent_id( $imported['forms'], $child_forms );

		return $imported;
    }

	/**
	* Put child forms first so they will be imported before parents
	*
	* @since 2.0.16
	* @param array $forms
	*/
	private static function put_child_forms_first( &$forms ) {
		$child_forms = array();
		$regular_forms = array();

		foreach ( $forms as $form ) {
			$parent_form_id = isset( $form->parent_form_id) ? (int) $form->parent_form_id : 0;

			if ( $parent_form_id ) {
				$child_forms[] = $form;
			} else {
				$regular_forms[] = $form;
			}
		}

		$forms = array_merge( $child_forms, $regular_forms );
	}

	/**
	* Keep track of all imported child forms
	*
	* @since 2.0.16
	* @param int $form_id
	* @param int $parent_form_id
	* @param array $child_forms
	*/
	private static function track_imported_child_forms( $form_id, $parent_form_id, &$child_forms ) {
		if ( $parent_form_id ) {
			$child_forms[ $form_id ] = $parent_form_id;
		}
	}

	/**
	* Update the parent_form_id on imported child forms
	* Child forms are imported first so their parent_form_id will need to be updated after the parent is imported
	*
	* @since 2.0.6
	* @param array $imported_forms
	* @param array $child_forms
	*/
	private static function maybe_update_child_form_parent_id( $imported_forms, $child_forms ) {
		foreach ( $child_forms as $child_form_id => $old_parent_form_id ) {

			if ( isset( $imported_forms[ $old_parent_form_id ] ) && $imported_forms[ $old_parent_form_id ] != $old_parent_form_id ) {
				// Update all children with this old parent_form_id
				$new_parent_form_id = (int) $imported_forms[ $old_parent_form_id ];

				FrmForm::update( $child_form_id, array( 'parent_form_id' => $new_parent_form_id ) );
			}
		}
	}

	/**
	* Import all fields for a form
	* @since 2.0.13
	*
	* TODO: Cut down on params
	*/
	private static function import_xml_fields( $xml_fields, $form_id, $this_form, &$form_fields, &$imported ) {
		$in_section = 0;

		foreach ( $xml_fields as $field ) {
		    $f = array(
		        'id'            => (int) $field->id,
		        'field_key'     => (string) $field->field_key,
		        'name'          => (string) $field->name,
		        'description'   => (string) $field->description,
		        'type'          => (string) $field->type,
		        'default_value' => FrmAppHelper::maybe_json_decode( (string) $field->default_value),
		        'field_order'   => (int) $field->field_order,
		        'form_id'       => (int) $form_id,
		        'required'      => (int) $field->required,
		        'options'       => FrmAppHelper::maybe_json_decode( (string) $field->options),
				'field_options' => FrmAppHelper::maybe_json_decode( (string) $field->field_options ),
		    );

		    if ( is_array($f['default_value']) && in_array($f['type'], array(
		        'text', 'email', 'url', 'textarea',
		        'number','phone', 'date', 'time',
		        'hidden', 'password', 'tag', 'image',
		    )) ) {
		        if ( count($f['default_value']) === 1 ) {
					$f['default_value'] = '[' . reset( $f['default_value'] ) . ']';
		        } else {
		            $f['default_value'] = reset($f['default_value']);
		        }
		    }

			self::maybe_update_in_section_variable( $in_section, $f );
			self::maybe_update_form_select( $f, $imported );
			self::maybe_update_get_values_form_setting( $imported, $f );

			if ( ! empty($this_form) ) {
				// check for field to edit by field id
				if ( isset( $form_fields[ $f['id'] ] ) ) {
					FrmField::update( $f['id'], $f );
					$imported['updated']['fields']++;

					unset( $form_fields[ $f['id'] ] );

					//unset old field key
					if ( isset( $form_fields[ $f['field_key'] ] ) ) {
						unset( $form_fields[ $f['field_key'] ] );
					}
				} else if ( isset( $form_fields[ $f['field_key'] ] ) ) {
					// check for field to edit by field key
					unset($f['id']);

					FrmField::update( $form_fields[ $f['field_key'] ], $f );
					$imported['updated']['fields']++;

					unset( $form_fields[ $form_fields[ $f['field_key'] ] ] ); //unset old field id
					unset( $form_fields[ $f['field_key'] ] ); //unset old field key
				} else {
					// if no matching field id or key in this form, create the field
					self::create_imported_field( $f, $imported );
				}
			} else {

				self::create_imported_field( $f, $imported );
			}
		}
	}

	/**
	 * Update the current in_section value
	 *
	 * @since 2.0.25
	 * @param int $in_section
	 * @param array $f
	 */
	private static function maybe_update_in_section_variable( &$in_section, &$f ) {
		// If we're at the end of a section, switch $in_section is 0
		if ( in_array( $f['type'], array( 'end_divider', 'break', 'form' ) ) ) {
			$in_section = 0;
		}

		// Update the current field's in_section value
		if ( ! isset( $f['field_options']['in_section'] ) ) {
			$f['field_options']['in_section'] = $in_section;
		}

		// If we're starting a new section, switch $in_section to ID of divider
		if ( $f['type'] == 'divider' ) {
			$in_section = $f['id'];
		}
	}

	/**
	* Switch the form_select on a repeating field or embedded form if it needs to be switched
	*
	* @since 2.0.16
	* @param array $f
	* @param array $imported
	*/
	private static function maybe_update_form_select( &$f, $imported ) {
		if ( ! isset( $imported['forms'] ) ) {
			return;
		}

		if ( $f['type'] == 'form' || ( $f['type'] == 'divider' && FrmField::is_option_true( $f['field_options'], 'repeat' ) ) ) {
			if ( FrmField::is_option_true( $f['field_options'], 'form_select' ) ) {
				$form_select = $f['field_options']['form_select'];
				if ( isset( $imported['forms'][ $form_select ] ) ) {
					$f['field_options']['form_select'] = $imported['forms'][ $form_select ];
				}
			}
		}
	}

	/**
	 * Update the get_values_form setting if the form was imported
	 *
	 * @since 2.01.0
	 * @param array $imported
	 * @param array $f
	 */
	private static function maybe_update_get_values_form_setting( $imported, &$f ) {
		if ( ! isset( $imported['forms'] ) ) {
			return;
		}

		if ( FrmField::is_option_true_in_array( $f['field_options'], 'get_values_form' ) ) {
			$old_form = $f['field_options']['get_values_form'];
			if ( isset( $imported['forms'][ $old_form ] ) ) {
				$f['field_options']['get_values_form'] = $imported['forms'][ $old_form ];
			}
		}
	}

	/**
	 * Create an imported field
	 *
	 * @since 2.0.25
	 * @param array $f
	 * @param array $imported
	 */
	private static function create_imported_field( $f, &$imported ) {
		$new_id = FrmField::create( $f );
		if ( $new_id != false ) {
			$imported['imported']['fields']++;
			do_action( 'frm_after_field_is_imported', $f, $new_id );
		}
	}

	/**
	* Updates the custom style setting on import
	*
	* @since 2.0.19
	* @param array $form
	*
	*/
	private static function update_custom_style_setting_on_import( &$form ) {
		if ( ! isset( $form['options']['custom_style'] ) ) {
			return;
		}

		if ( is_numeric( $form['options']['custom_style'] ) ) {
			// Set to default
			$form['options']['custom_style'] = 1;
		} else {
			// Replace the style name with the style ID on import
			global $wpdb;
			$table = $wpdb->prefix . 'posts';
			$where = array(
				'post_name' => $form['options']['custom_style'],
				'post_type' => 'frm_styles',
			);
			$select = 'ID';
			$style_id = FrmDb::get_var( $table, $where, $select );

			if ( $style_id ) {
				$form['options']['custom_style'] = $style_id;
			} else {
				// Set to default
				$form['options']['custom_style'] = 1;
			}
		}
	}

	public static function import_xml_views( $views, $imported ) {
        $imported['posts'] = array();
        $form_action_type = FrmFormActionsController::$action_post_type;

        $post_types = array(
            'frm_display' => 'views',
            $form_action_type => 'actions',
            'frm_styles'    => 'styles',
        );

        foreach ( $views as $item ) {
			$post = array(
				'post_title'    => (string) $item->title,
				'post_name'     => (string) $item->post_name,
				'post_type'     => (string) $item->post_type,
				'post_password' => (string) $item->post_password,
				'guid'          => (string) $item->guid,
				'post_status'   => (string) $item->status,
				'post_author'   => FrmAppHelper::get_user_id_param( (string) $item->post_author ),
				'post_id'       => (int) $item->post_id,
				'post_parent'   => (int) $item->post_parent,
				'menu_order'    => (int) $item->menu_order,
				'post_content'  => FrmFieldsHelper::switch_field_ids((string) $item->content),
				'post_excerpt'  => FrmFieldsHelper::switch_field_ids((string) $item->excerpt),
				'is_sticky'     => (string) $item->is_sticky,
				'comment_status' => (string) $item->comment_status,
				'post_date'     => (string) $item->post_date,
				'post_date_gmt' => (string) $item->post_date_gmt,
				'ping_status'   => (string) $item->ping_status,
                'postmeta'      => array(),
                'tax_input'     => array(),
			);

            $old_id = $post['post_id'];
            self::populate_post($post, $item, $imported);

			unset($item);

			$post_id = false;
            if ( $post['post_type'] == $form_action_type ) {
                $action_control = FrmFormActionsController::get_form_actions( $post['post_excerpt'] );
				if ( $action_control && is_object( $action_control ) ) {
					$post_id = $action_control->maybe_create_action( $post, $imported['form_status'] );
				}
                unset($action_control);
            } else if ( $post['post_type'] == 'frm_styles' ) {
                // Properly encode post content before inserting the post
                $post['post_content'] = FrmAppHelper::maybe_json_decode( $post['post_content'] );
                $post['post_content'] = FrmAppHelper::prepare_and_encode( $post['post_content'] );

                // Create/update post now
                $post_id = wp_insert_post( $post );
            } else {
                // Create/update post now
                $post_id = wp_insert_post( $post );
            }

            if ( ! is_numeric($post_id) ) {
                continue;
            }

            self::update_postmeta($post, $post_id);

            $this_type = 'posts';
			if ( isset( $post_types[ $post['post_type'] ] ) ) {
				$this_type = $post_types[ $post['post_type'] ];
            }

            if ( isset($post['ID']) && $post_id == $post['ID'] ) {
                $imported['updated'][ $this_type ]++;
            } else {
                $imported['imported'][ $this_type ]++;
            }

            unset($post);

			$imported['posts'][ (int) $old_id ] = $post_id;
		}

		self::maybe_update_stylesheet( $imported );

		return $imported;
    }

    private static function populate_post( &$post, $item, $imported ) {
		if ( isset($item->attachment_url) ) {
			$post['attachment_url'] = (string) $item->attachment_url;
		}

		if ( $post['post_type'] == FrmFormActionsController::$action_post_type && isset( $imported['forms'][ (int) $post['menu_order'] ] ) ) {
		    // update to new form id
		    $post['menu_order'] = $imported['forms'][ (int) $post['menu_order'] ];
		}

		// Don't allow default styles to take over a site's default style
		if ( 'frm_styles' == $post['post_type'] ) {
			$post['menu_order'] = 0;
		}

		foreach ( $item->postmeta as $meta ) {
		    self::populate_postmeta($post, $meta, $imported);
			unset($meta);
		}

        self::populate_taxonomies($post, $item);

        self::maybe_editing_post($post);
    }

    private static function populate_postmeta( &$post, $meta, $imported ) {
        global $frm_duplicate_ids;

	    $m = array(
			'key'   => (string) $meta->meta_key,
			'value' => (string) $meta->meta_value,
		);

		//switch old form and field ids to new ones
		if ( $m['key'] == 'frm_form_id' && isset($imported['forms'][ (int) $m['value'] ]) ) {
		    $m['value'] = $imported['forms'][ (int) $m['value'] ];
		} else {
		    $m['value'] = FrmAppHelper::maybe_json_decode($m['value']);

		    if ( ! empty($frm_duplicate_ids) ) {

		        if ( $m['key'] == 'frm_dyncontent' ) {
		            $m['value'] = FrmFieldsHelper::switch_field_ids($m['value']);
    		    } else if ( $m['key'] == 'frm_options' ) {

					foreach ( array( 'date_field_id', 'edate_field_id' ) as $setting_name ) {
						if ( isset( $m['value'][ $setting_name ] ) && is_numeric( $m['value'][ $setting_name ] ) && isset( $frm_duplicate_ids[ $m['value'][ $setting_name ] ] ) ) {
							$m['value'][ $setting_name ] = $frm_duplicate_ids[ $m['value'][ $setting_name ] ];
    		            }
    		        }

                    $check_dup_array = array();
    		        if ( isset( $m['value']['order_by'] ) && ! empty( $m['value']['order_by'] ) ) {
    		            if ( is_numeric( $m['value']['order_by'] ) && isset( $frm_duplicate_ids[ $m['value']['order_by'] ] ) ) {
    		                $m['value']['order_by'] = $frm_duplicate_ids[ $m['value']['order_by'] ];
    		            } else if ( is_array( $m['value']['order_by'] ) ) {
                            $check_dup_array[] = 'order_by';
    		            }
    		        }

    		        if ( isset( $m['value']['where'] ) && ! empty( $m['value']['where'] ) ) {
    		            $check_dup_array[] = 'where';
    		        }

                    foreach ( $check_dup_array as $check_k ) {
						foreach ( (array) $m['value'][ $check_k ] as $mk => $mv ) {
							if ( isset( $frm_duplicate_ids[ $mv ] ) ) {
								$m['value'][ $check_k ][ $mk ] = $frm_duplicate_ids[ $mv ];
		                    }
		                    unset($mk, $mv);
		                }
                    }
    		    }
		    }
		}

		if ( ! is_array($m['value']) ) {
		    $m['value'] = FrmAppHelper::maybe_json_decode($m['value']);
		}

		$post['postmeta'][ (string) $meta->meta_key ] = $m['value'];
    }

    /**
     * Add terms to post
     * @param array $post by reference
     * @param object $item The XML object data
     */
    private static function populate_taxonomies( &$post, $item ) {
		foreach ( $item->category as $c ) {
			$att = $c->attributes();
			if ( ! isset( $att['nicename'] ) ) {
                continue;
            }

		    $taxonomy = (string) $att['domain'];
		    if ( is_taxonomy_hierarchical($taxonomy) ) {
		        $name = (string) $att['nicename'];
		        $h_term = get_term_by('slug', $name, $taxonomy);
		        if ( $h_term ) {
		            $name = $h_term->term_id;
		        }
		        unset($h_term);
		    } else {
		        $name = (string) $c;
		    }

			if ( ! isset( $post['tax_input'][ $taxonomy ] ) ) {
				$post['tax_input'][ $taxonomy ] = array();
			}

			$post['tax_input'][ $taxonomy ][] = $name;
		    unset($name);
		}
    }

    /**
     * Edit post if the key and created time match
     */
    private static function maybe_editing_post( &$post ) {
		$match_by = array(
		    'post_type'     => $post['post_type'],
		    'name'          => $post['post_name'],
		    'post_status'   => $post['post_status'],
		    'posts_per_page' => 1,
		);

		if ( in_array( $post['post_status'], array( 'trash', 'draft' ) ) ) {
		    $match_by['include'] = $post['post_id'];
		    unset($match_by['name']);
		}

		$editing = get_posts($match_by);

        if ( ! empty($editing) && current($editing)->post_date == $post['post_date'] ) {
            // set the id of the post to edit
            $post['ID'] = current($editing)->ID;
        }
    }

    private static function update_postmeta( &$post, $post_id ) {
        foreach ( $post['postmeta'] as $k => $v ) {
            if ( '_edit_last' == $k ) {
                $v = FrmAppHelper::get_user_id_param($v);
            } else if ( '_thumbnail_id' == $k && FrmAppHelper::pro_is_installed() ) {
                //change the attachment ID
                $v = FrmProXMLHelper::get_file_id($v);
            }

            update_post_meta($post_id, $k, $v);

            unset($k, $v);
        }
    }

	private static function maybe_update_stylesheet( $imported ) {
		if ( ( isset( $imported['imported']['styles'] ) && ! empty( $imported['imported']['styles'] ) ) || ( isset( $imported['updated']['styles'] ) && ! empty( $imported['updated']['styles'] ) ) ) {
			if ( is_admin() && function_exists( 'get_filesystem_method' ) ) {
				$frm_style = new FrmStyle();
				$frm_style->update( 'default' );
			}
		}
	}

    /**
     * @param string $message
     */
	public static function parse_message( $result, &$message, &$errors ) {
        if ( is_wp_error($result) ) {
            $errors[] = $result->get_error_message();
        } else if ( ! $result ) {
            return;
        }

        if ( ! is_array($result) ) {
            $message = is_string( $result ) ? $result : print_r( $result, 1 );
            return;
        }

        $t_strings = array(
            'imported'  => __( 'Imported', 'formidable' ),
            'updated'   => __( 'Updated', 'formidable' ),
        );

        $message = '<ul>';
        foreach ( $result as $type => $results ) {
			if ( ! isset( $t_strings[ $type ] ) ) {
                // only print imported and updated
                continue;
            }

            $s_message = array();
            foreach ( $results as $k => $m ) {
                self::item_count_message($m, $k, $s_message);
                unset($k, $m);
            }

            if ( ! empty($s_message) ) {
				$message .= '<li><strong>' . $t_strings[ $type ] . ':</strong> ';
                $message .= implode(', ', $s_message);
                $message .= '</li>';
            }
        }

        if ( $message == '<ul>' ) {
            $message = '';
            $errors[] = __( 'Nothing was imported or updated', 'formidable' );
        } else {
            $message .= '</ul>';
        }
    }

	public static function item_count_message( $m, $type, &$s_message ) {
        if ( ! $m ) {
            return;
        }

        $strings = array(
            'forms'     => sprintf( _n( '%1$s Form', '%1$s Forms', $m, 'formidable' ), $m ),
            'fields'    => sprintf( _n( '%1$s Field', '%1$s Fields', $m, 'formidable' ), $m ),
            'items'     => sprintf( _n( '%1$s Entry', '%1$s Entries', $m, 'formidable' ), $m ),
            'views'     => sprintf( _n( '%1$s View', '%1$s Views', $m, 'formidable' ), $m ),
            'posts'     => sprintf( _n( '%1$s Post', '%1$s Posts', $m, 'formidable' ), $m ),
            'styles'     => sprintf( _n( '%1$s Style', '%1$s Styles', $m, 'formidable' ), $m ),
            'terms'     => sprintf( _n( '%1$s Term', '%1$s Terms', $m, 'formidable' ), $m ),
            'actions'   => sprintf( _n( '%1$s Form Action', '%1$s Form Actions', $m, 'formidable' ), $m ),
        );

		$s_message[] = isset( $strings[ $type ] ) ? $strings[ $type ] : ' ' . $m . ' ' . ucfirst( $type );
    }

	/**
	 * Prepare the form options for export
	 *
	 * @since 2.0.19
	 * @param string $options
	 * @return string
	 */
	public static function prepare_form_options_for_export( $options ) {
		$options = maybe_unserialize( $options );
		// Change custom_style to the post_name instead of ID
		if ( isset( $options['custom_style'] ) && 1 !== $options['custom_style'] ) {
			global $wpdb;
			$table = $wpdb->prefix . 'posts';
			$where = array( 'ID' => $options['custom_style'] );
			$select = 'post_name';

			$style_name = FrmDb::get_var( $table, $where, $select );

			if ( $style_name ) {
				$options['custom_style'] = $style_name;
			} else {
				$options['custom_style'] = 1;
			}
		}
		$options = serialize( $options );
		return self::cdata( $options );
	}

	public static function cdata( $str ) {
	    $str = maybe_unserialize($str);
	    if ( is_array($str) ) {
	        $str = json_encode($str);
		} else if ( seems_utf8( $str ) == false ) {
			$str = utf8_encode( $str );
		}

        if ( is_numeric($str) ) {
            return $str;
        }

		self::remove_invalid_characters_from_xml( $str );

		// $str = ent2ncr(esc_html($str));
		$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';

		return $str;
	}

	/**
	 * Remove <US> character (unit separator) from exported strings
	 *
	 * @since 2.0.22
	 * @param string $str
	 */
	private static function remove_invalid_characters_from_xml( &$str ) {
		// Remove <US> character
		$str = str_replace( '\x1F', '', $str );
	}

    public static function migrate_form_settings_to_actions( $form_options, $form_id, &$imported = array(), $switch = false ) {
        // Get post type
        $post_type = FrmFormActionsController::$action_post_type;

        // Set up imported index, if not set up yet
        if ( ! isset( $imported['imported']['actions'] ) ) {
            $imported['imported']['actions'] = 0;
        }

        // Migrate post settings to action
        self::migrate_post_settings_to_action( $form_options, $form_id, $post_type, $imported, $switch );

        // Migrate email settings to action
        self::migrate_email_settings_to_action( $form_options, $form_id, $post_type, $imported, $switch );
    }

    /**
    * Migrate post settings to form action
    *
    * @param string $post_type
    */
    private static function migrate_post_settings_to_action( $form_options, $form_id, $post_type, &$imported, $switch ) {
        if ( ! isset($form_options['create_post']) || ! $form_options['create_post'] ) {
            return;
        }

        $new_action = array(
            'post_type'     => $post_type,
            'post_excerpt'  => 'wppost',
			'post_title'    => __( 'Create Posts', 'formidable' ),
            'menu_order'    => $form_id,
            'post_status'   => 'publish',
            'post_content'  => array(),
			'post_name'     => $form_id . '_wppost_1',
        );

        $post_settings = array(
            'post_type', 'post_category', 'post_content',
            'post_excerpt', 'post_title', 'post_name', 'post_date',
			'post_status', 'post_custom_fields', 'post_password',
        );

        foreach ( $post_settings as $post_setting ) {
			if ( isset( $form_options[ $post_setting ] ) ) {
				$new_action['post_content'][ $post_setting ] = $form_options[ $post_setting ];
            }
            unset($post_setting);
        }

		$new_action['event'] = array( 'create', 'update' );

        if ( $switch ) {
			// Fields with string or int saved
			$basic_fields = array( 'post_title', 'post_content', 'post_excerpt', 'post_password', 'post_date', 'post_status' );

			// Fields with arrays saved
			$array_fields = array( 'post_category', 'post_custom_fields' );

			$new_action['post_content'] = self::switch_action_field_ids( $new_action['post_content'], $basic_fields, $array_fields );
        }
        $new_action['post_content'] = json_encode($new_action['post_content']);

        $exists = get_posts( array(
            'name'          => $new_action['post_name'],
            'post_type'     => $new_action['post_type'],
            'post_status'   => $new_action['post_status'],
            'numberposts'   => 1,
        ) );

        if ( ! $exists ) {
			// this isn't an email, but we need to use a class that will always be included
			FrmAppHelper::save_json_post( $new_action );
            $imported['imported']['actions']++;
        }
    }

	/**
	 * Switch old field IDs for new field IDs in emails and post
	 *
	 * @since 2.0
	 * @param array $post_content - check for old field IDs
	 * @param array $basic_fields - fields with string or int saved
	 * @param array $array_fields - fields with arrays saved
	 *
	 * @return string $post_content - new field IDs
	 */
	private static function switch_action_field_ids( $post_content, $basic_fields, $array_fields = array() ) {
        global $frm_duplicate_ids;

        // If there aren't IDs that were switched, end now
        if ( ! $frm_duplicate_ids ) {
            return;
        }

        // Get old IDs
        $old = array_keys( $frm_duplicate_ids );

        // Get new IDs
        $new = array_values( $frm_duplicate_ids );

        // Do a str_replace with each item to set the new IDs
        foreach ( $post_content as $key => $setting ) {
            if ( ! is_array( $setting ) && in_array( $key, $basic_fields ) ) {
                // Replace old IDs with new IDs
				$post_content[ $key ] = str_replace( $old, $new, $setting );
            } else if ( is_array( $setting ) && in_array( $key, $array_fields ) ) {
                foreach ( $setting as $k => $val ) {
                    // Replace old IDs with new IDs
					$post_content[ $key ][ $k ] = str_replace( $old, $new, $val );
                }
            }
            unset( $key, $setting );
        }
        return $post_content;
    }

    private static function migrate_email_settings_to_action( $form_options, $form_id, $post_type, &$imported, $switch ) {
        // No old notifications or autoresponders to carry over
		if ( ! isset( $form_options['auto_responder'] ) && ! isset( $form_options['notification'] ) && ! isset( $form_options['email_to'] ) ) {
            return;
        }

        // Initialize notifications array
        $notifications = array();

        // Migrate regular notifications
        self::migrate_notifications_to_action( $form_options, $form_id, $notifications );

        // Migrate autoresponders
        self::migrate_autoresponder_to_action( $form_options, $form_id, $notifications );

        if (  empty( $notifications ) ) {
            return;
        }

        foreach ( $notifications as $new_notification ) {
            $new_notification['post_type']      = $post_type;
            $new_notification['post_excerpt']   = 'email';
			$new_notification['post_title']     = __( 'Email Notification', 'formidable' );
            $new_notification['menu_order']     = $form_id;
            $new_notification['post_status']    = 'publish';

            // Switch field IDs and keys, if needed
            if ( $switch ) {

				// Switch field IDs in email conditional logic
				self::switch_email_contition_field_ids( $new_notification['post_content'] );

				// Switch all other field IDs in email
                $new_notification['post_content'] = FrmFieldsHelper::switch_field_ids( $new_notification['post_content'] );
            }
            $new_notification['post_content']   = FrmAppHelper::prepare_and_encode( $new_notification['post_content'] );

            $exists = get_posts( array(
                'name'          => $new_notification['post_name'],
                'post_type'     => $new_notification['post_type'],
                'post_status'   => $new_notification['post_status'],
                'numberposts'   => 1,
            ) );

            if ( empty($exists) ) {
				FrmAppHelper::save_json_post( $new_notification );
                $imported['imported']['actions']++;
            }
            unset($new_notification);
        }
    }

    private static function migrate_notifications_to_action( $form_options, $form_id, &$notifications ) {
        if ( ! isset( $form_options['notification'] ) && isset( $form_options['email_to'] ) && ! empty( $form_options['email_to'] ) ) {
            // add old settings into notification array
			$form_options['notification'] = array( 0 => $form_options );
        } else if ( isset( $form_options['notification']['email_to'] ) ) {
            // make sure it's in the correct format
			$form_options['notification'] = array( 0 => $form_options['notification'] );
        }

        if ( isset( $form_options['notification'] ) && is_array($form_options['notification']) ) {
            foreach ( $form_options['notification'] as $email_key => $notification ) {

                $atts = array( 'email_to' => '', 'reply_to' => '', 'reply_to_name' => '', 'event' => '', 'form_id' => $form_id, 'email_key' => $email_key );

                // Format the email data
                self::format_email_data( $atts, $notification );

				if ( isset( $notification['twilio'] ) && $notification['twilio'] ) {
					do_action( 'frm_create_twilio_action', $atts, $notification );
				}

                // Setup the new notification
                $new_notification = array();
                self::setup_new_notification( $new_notification, $notification, $atts );

                $notifications[] = $new_notification;
            }
        }
    }

    private static function format_email_data( &$atts, $notification ) {
        // Format email_to
        self::format_email_to_data( $atts, $notification );

        // Format the reply to email and name
        $reply_fields = array( 'reply_to' => '', 'reply_to_name' => '' );
        foreach ( $reply_fields as $f => $val ) {
			if ( isset( $notification[ $f ] ) ) {
				$atts[ $f ] = $notification[ $f ];
				if ( 'custom' == $notification[ $f ] ) {
					$atts[ $f ] = $notification[ 'cust_' . $f ];
				} else if ( is_numeric( $atts[ $f ] ) && ! empty( $atts[ $f ] ) ) {
					$atts[ $f ] = '[' . $atts[ $f ] . ']';
                }
            }
            unset( $f, $val );
        }

        // Format event
		$atts['event'] = array( 'create' );
        if ( isset( $notification['update_email'] ) && 1 == $notification['update_email'] ) {
            $atts['event'][] = 'update';
        } else if ( isset($notification['update_email']) && 2 == $notification['update_email'] ) {
			$atts['event'] = array( 'update' );
        }
    }

    private static function format_email_to_data( &$atts, $notification ) {
        if ( isset( $notification['email_to'] ) ) {
			$atts['email_to'] = preg_split( '/ (,|;) /', $notification['email_to'] );
        } else {
            $atts['email_to'] = array();
        }

        if ( isset( $notification['also_email_to'] ) ) {
            $email_fields = (array) $notification['also_email_to'];
            $atts['email_to'] = array_merge( $email_fields, $atts['email_to'] );
            unset( $email_fields );
        }

        foreach ( $atts['email_to'] as $key => $email_field ) {

            if ( is_numeric( $email_field ) ) {
				$atts['email_to'][ $key ] = '[' . $email_field . ']';
            }

            if ( strpos( $email_field, '|') ) {
                $email_opt = explode( '|', $email_field );
                if ( isset( $email_opt[0] ) ) {
					$atts['email_to'][ $key ] = '[' . $email_opt[0] . ' show=' . $email_opt[1] . ']';
                }
                unset( $email_opt );
            }
        }
        $atts['email_to'] = implode(', ', $atts['email_to']);
    }

    private static function setup_new_notification( &$new_notification, $notification, $atts ) {
        // Set up new notification
        $new_notification = array(
            'post_content'  => array(
                'email_to'      => $atts['email_to'],
                'event'         => $atts['event'],
            ),
			'post_name'         => $atts['form_id'] . '_email_' . $atts['email_key'],
        );

        // Add more fields to the new notification
        $add_fields = array( 'email_message', 'email_subject', 'plain_text', 'inc_user_info', 'conditions' );
        foreach ( $add_fields as $add_field ) {
			if ( isset( $notification[ $add_field ] ) ) {
				$new_notification['post_content'][ $add_field ] = $notification[ $add_field ];
            } else if ( in_array( $add_field, array( 'plain_text', 'inc_user_info' ) ) ) {
				$new_notification['post_content'][ $add_field ] = 0;
            } else {
				$new_notification['post_content'][ $add_field ] = '';
            }
            unset( $add_field );
        }

		// Set reply to
		$new_notification['post_content']['reply_to'] = $atts['reply_to'];

        // Set from
		if ( ! empty( $atts['reply_to'] ) || ! empty( $atts['reply_to_name'] ) ) {
			$new_notification['post_content']['from'] = ( empty( $atts['reply_to_name'] ) ? '[sitename]' : $atts['reply_to_name'] ) . ' <' . ( empty( $atts['reply_to'] ) ? '[admin_email]' : $atts['reply_to'] ) . '>';
        }
    }

	/**
	* Switch field IDs in pre-2.0 email conditional logic
	*
	* @param $post_content array, pass by reference
	*/
	private static function switch_email_contition_field_ids( &$post_content ) {
		// Switch field IDs in conditional logic
		if ( isset( $post_content['conditions'] ) && is_array( $post_content['conditions'] ) ) {
			foreach ( $post_content['conditions'] as $email_key => $val ) {
				if ( is_numeric( $email_key ) ) {
					$post_content['conditions'][ $email_key ] = self::switch_action_field_ids( $val, array( 'hide_field' ) );
				}
				unset( $email_key, $val);
			}
		}
	}

    private static function migrate_autoresponder_to_action( $form_options, $form_id, &$notifications ) {
        if ( isset($form_options['auto_responder']) && $form_options['auto_responder'] && isset($form_options['ar_email_message']) && $form_options['ar_email_message'] ) {
            // migrate autoresponder

            $email_field = isset($form_options['ar_email_to']) ? $form_options['ar_email_to'] : 0;
            if ( strpos($email_field, '|') ) {
                // data from entries field
                $email_field = explode('|', $email_field);
                if ( isset($email_field[1]) ) {
                    $email_field = $email_field[1];
                }
            }
            if ( is_numeric($email_field) && ! empty($email_field) ) {
				$email_field = '[' . $email_field . ']';
            }

            $notification = $form_options;
            $new_notification2 = array(
                'post_content'  => array(
                    'email_message' => $notification['ar_email_message'],
                    'email_subject' => isset($notification['ar_email_subject']) ? $notification['ar_email_subject'] : '',
                    'email_to'      => $email_field,
                    'plain_text'    => isset($notification['ar_plain_text']) ? $notification['ar_plain_text'] : 0,
                    'inc_user_info' => 0,
                ),
				'post_name'     => $form_id . '_email_' . count( $notifications ),
            );

            $reply_to = isset($notification['ar_reply_to']) ? $notification['ar_reply_to'] : '';
            $reply_to_name = isset($notification['ar_reply_to_name']) ? $notification['ar_reply_to_name'] : '';

			if ( ! empty( $reply_to ) ) {
				$new_notification2['post_content']['reply_to'] = $reply_to;
			}

			if ( ! empty( $reply_to ) || ! empty( $reply_to_name ) ) {
				$new_notification2['post_content']['from'] = ( empty( $reply_to_name ) ? '[sitename]' : $reply_to_name ) . ' <' . ( empty( $reply_to ) ? '[admin_email]' : $reply_to ) . '>';
			}

            $notifications[] = $new_notification2;
            unset( $new_notification2 );
        }
    }
}

