nested-array-of/index.js

"use strict";

const combinator = require("@validatem/combinator");
const validationResult = require("@validatem/validation-result");
const annotateErrors = require("@validatem/annotate-errors");
const isArray = require("@validatem/is-array");

module.exports = function (rules) {
	let validator = combinator((value, applyValidators) => {
		let allErrors = [];

		function validateArray(array, path = []) {
			let newArray = [];
			
			array.forEach((item, i) => {
				let itemPath = path.concat([ i ]);

				if (Array.isArray(item)) {
					newArray.push(validateArray(item, itemPath));
				} else {
					let { errors, newValue } = applyValidators(item, rules);
		
					let annotatedErrors = annotateErrors({
						pathSegments: itemPath,
						errors: errors
					});
		
					newArray.push(newValue);
					allErrors.push(...annotatedErrors);
				}
			});

			return newArray;
		}

		return validationResult({
			errors: allErrors,
			newValue: validateArray(value)
		});
	});

	validator.callIfNull = false;

	return [
		isArray,
		validator
	];
};