/* global _, acf, jQuery */

module.exports = function() {
	var outerFieldsName = [
		"flexible_content",
		"repeater",
		"group",
	];

	var innerFields = [];
	var outerFields = [];

	var fields = _.map( acf.get_fields(), function( field ) {
		var field_data = jQuery.extend( true, {}, acf.get_data( jQuery( field ) ) );
		field_data.$el = jQuery( field );
		field_data.post_meta_key = field_data.name;

		// Collect nested and parent
		if ( outerFieldsName.indexOf( field_data.type ) === -1 ) {
			innerFields.push( field_data );
		} else {
			outerFields.push( field_data );
		}

		return field_data;
	} );

	if ( outerFields.length === 0 ) {
		return fields;
	}

	// Transform field names for nested fields.
	_.each( innerFields, function( inner ) {
		_.each( outerFields, function( outer ) {
			if ( jQuery.contains( outer.$el[ 0 ], inner.$el[ 0 ] ) ) {
				// Types that hold multiple children.
				if ( outer.type === "flexible_content" || outer.type === "repeater" ) {
					outer.children = outer.children || [];
					outer.children.push( inner );
					inner.parent = outer;
					inner.post_meta_key = outer.name + "_" + ( outer.children.length - 1 ) + "_" + inner.name;
				}

				// Types that hold single children.
				if ( outer.type === "group" ) {
					outer.children = [ inner ];
					inner.parent = outer;
					inner.post_meta_key = outer.name + "_" + inner.name;
				}
			}
		} );
	} );

	return fields;
};