<?php

class ET_Builder_Module_Settings_Migration_ColumnOptions extends ET_Builder_Module_Settings_Migration {

    public $version = '3.25';

    public $add_missing_fields = true;
    
    public $columnSettingsFromRow = array();

    public $fieldsWithSuffix = array(
        'padding'           => array( 'tablet', 'phone', 'last_edited', '_hover', '_hover_enabled' ),
        'padding_top'       => array( '_hover', '_hover_enabled' ),
        'padding_right'     => array( '_hover', '_hover_enabled' ),
        'padding_bottom'    => array( '_hover', '_hover_enabled' ),
        'padding_left'      => array( '_hover', '_hover_enabled' ),
        'background_color'  => array( '_hover', '_hover_enabled' ),
        'custom_css_before' => array( '_hover', '_hover_enabled' ),
        'custom_css_main'   => array( '_hover', '_hover_enabled' ),
        'custom_css_after'  => array( '_hover', '_hover_enabled' ),
    );
    
    public $fieldsWithSuffixAppended = array(
        'custom_padding'                         => '__no_suffix__',
        'custom_padding_tablet'                  => 'custom_padding',
        'custom_padding_phone'                   => 'custom_padding',
        'custom_padding_last_edited'             => 'custom_padding',
        'custom_padding__hover'                  => '__no_suffix__',
        'custom_padding__hover_enabled'          => 'custom_padding',
        'background_color__hover'                => 'background_color',
        'background_color__hover_enabled'        => 'background_color',
        'custom_css_before'                      => '__no_suffix__',
        'custom_css_main_element'                => '__no_suffix__',
        'custom_css_after'                       => '__no_suffix__',
        'custom_css_before__hover'               => 'custom_css_before',
        'custom_css_main_element__hover'         => 'custom_css_main_element',
        'custom_css_after__hover'                => 'custom_css_after',
        'custom_css_before__hover_enabled'       => 'custom_css_before',
        'custom_css_main_element__hover_enabled' => 'custom_css_main_element',
        'custom_css_after__hover_enabled'        => 'custom_css_after',
    );

    public function get_modules() {
        return array( 'et_pb_row', 'et_pb_column', 'et_pb_row_inner', 'et_pb_column_inner', );
    }

    public function get_fields() {
        $fields = array();
        $fields_to_migrate = array(
            'module_id',
            'module_class',
            'background_color',
            'bg_img',
            'background_size',
            'background_position',
            'background_repeat',
            'background_blend',
            'padding_top',
            'padding_right',
            'padding_bottom',
            'padding_left',
            'padding',
            'parallax',
            'parallax_method',
            'custom_css_before',
            'custom_css_main',
            'custom_css_after',
            'use_background_color_gradient',
            'background_color_gradient_type',
            'background_color_gradient_direction',
            'background_color_gradient_direction_radial',
            'background_color_gradient_start',
            'background_color_gradient_end',
            'background_color_gradient_start_position',
            'background_color_gradient_end_position',
            'background_color_gradient_overlays_image',
            'background_video_mp4',
            'background_video_webm',
            'background_video_width',
            'background_video_height',
            'allow_player_pause',
            'background_video_pause_outside_viewport',
        );

        foreach ( $this->get_modules() as $module ) {
            foreach( $fields_to_migrate as $field_name_raw ) {
                $field_name = $field_name_raw;

                if ( in_array( $module, array( 'et_pb_row', 'et_pb_row_inner' ) ) ) {
                    $max_columns_number = 'et_pb_row_inner' === $module ? 4 : 6;
                    for ( $i = 1; $i <= $max_columns_number; $i++ ) {
                        if ( array_key_exists( $field_name_raw, $this->fieldsWithSuffix ) ) {
                            foreach ( $this->fieldsWithSuffix[ $field_name_raw ] as $suffix ) {
                                $fields[ "${field_name}_${i}_$suffix" ] = array(
                                    'affected_fields' => array(
                                        "${field_name}_${i}_$suffix" => array( 'et_pb_row', 'et_pb_row_inner' ),
                                    ),
                                );
                            }
                        }

                        $fields[ "${field_name}_${i}" ] = array(
                            'affected_fields' => array(
                                "${field_name}_${i}" => array( 'et_pb_row', 'et_pb_row_inner' ),
                            ),
                        );
                    }
                }
                
                if ( in_array( $module, array( 'et_pb_column', 'et_pb_column_inner' ) ) ) {
                    if ( in_array( $field_name, array( 'padding_top', 'padding_right', 'padding_bottom', 'padding_left' ) ) ) {
                        continue;
                    }

                    switch( $field_name ) {
                        case 'bg_img' :
                            $field_name = 'background_image';
                            break;
                        case 'padding' :
                            $field_name = 'custom_padding';
                            break;
                        case 'custom_css_main' :
                            $field_name = 'custom_css_main_element';
                            break;
                    }
                    
                    if ( array_key_exists( $field_name_raw, $this->fieldsWithSuffix ) ) {
                        foreach ( $this->fieldsWithSuffix[ $field_name_raw ] as $suffix ) {
                            $fields[ "${field_name}_${suffix}" ] = array(
                                'affected_fields' => array(
                                    "${field_name}_${suffix}" => array( 'et_pb_column', 'et_pb_column_inner' ),
                                ),
                            );
                        }
                    }
                    
                    $fields[ $field_name ] = array(
                        'affected_fields' => array(
                            $field_name => array( 'et_pb_column', 'et_pb_column_inner' ),
                        ),
                    );
                }
            }
        }

        return $fields;
    }
    
    public function migrate_padding( $row_address, $column_index, $field_name, $saved_value ) {
        $padding_sides    = array( 'padding_top', 'padding_right', 'padding_bottom', 'padding_left' );
        $padding_combined = array();
        $suffix           = str_replace( 'padding', '', $field_name );

        // If padding was migrated already, no need to process it again.
        if ( ! empty( $saved_value ) ) {
            return $saved_value;
        }

        foreach ( $padding_sides as $side ) {
            if ( isset( $this->columnSettingsFromRow[ $row_address ], $this->columnSettingsFromRow[ $row_address ][ "${side}_${column_index}${suffix}" ] ) ) {
                $padding_combined[] = $this->columnSettingsFromRow[ $row_address ][ "${side}_${column_index}${suffix}" ];
            } else {
                $padding_combined[] = '';
            }
        }

        return implode( '|', $padding_combined );
    }

    public function migrate( $field_name, $current_value, $module_slug, $saved_value, $saved_field_name, $attrs, $content, $module_address ) {
        if ( in_array( $module_slug, array( 'et_pb_row', 'et_pb_row_inner' ) ) ) {
            $this->columnSettingsFromRow[ $module_address ][ $field_name ] = $saved_value;

            return '';
        }

        if ( in_array( $module_slug, array( 'et_pb_column', 'et_pb_column_inner' ) ) ) {
            $row_level     = 'et_pb_column_inner' === $module_slug ? 3 : 2;
            $address_array = explode( '.', $module_address );
            $parent_row    = implode( '.', array_slice( $address_array, 0, $row_level ) );
            $column_index  = (int) implode( '', array_slice( $address_array, $row_level, 1 ) ) + 1;

            if ( in_array( $field_name, array_keys( $this->fieldsWithSuffixAppended ) ) ) {
                $field_name_without_suffix = $this->fieldsWithSuffixAppended[ $field_name ];
                $field_name_replacement    = $field_name_without_suffix;

                if ( in_array( $field_name, array( 'custom_padding', 'custom_padding__hover' ) ) ) {
                    $field_name = str_replace( 'custom_', '', $field_name );
                }
                
                if ( 'custom_css_main_element' === $field_name ) {
                    $field_name = 'custom_css_main';
                }

                if ( in_array( $field_name, array( 'custom_padding_phone', 'custom_padding_tablet', 'custom_padding_last_edited', 'custom_padding__hover', 'custom_padding__hover_enabled' ) ) ) {
                    $field_name_replacement = 'padding';
                }
                
                if ( in_array( $field_name, array( 'custom_css_main_element__hover', 'custom_css_main_element__hover_enabled' ) ) ) {
                    $field_name_replacement = 'custom_css_main';
                }

                // Insert the column index in the middle of field name right before suffix.
                $row_field_name = '__no_suffix__' === $field_name_without_suffix ? "${field_name}_${column_index}" : str_replace( $field_name_without_suffix, "${field_name_replacement}_${column_index}", $field_name );
            } else {
                $row_field_name = 'background_image' === $field_name ? "bg_img_${column_index}" : "${field_name}_${column_index}";
            }

            if ( in_array( $field_name, array( 'padding', 'padding__hover' ) ) ) {
                return $this->migrate_padding( $parent_row, $column_index, $field_name, $saved_value );
            }

            if ( isset( $this->columnSettingsFromRow[ $parent_row ], $this->columnSettingsFromRow[ $parent_row ][ $row_field_name ] ) && ! empty( $this->columnSettingsFromRow[ $parent_row ][ $row_field_name ] ) ) {
                return $this->columnSettingsFromRow[ $parent_row ][ $row_field_name ];
            }
        }
        return $saved_value;
    }
}

return new ET_Builder_Module_Settings_Migration_ColumnOptions();