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var baseSortByOrder = require('../internal/baseSortByOrder'),
isArray = require('../lang/isArray'),
isIterateeCall = require('../internal/isIterateeCall');
/**
* This method is like `_.sortByAll` except that it allows specifying the
* sort orders of the iteratees to sort by. If `orders` is unspecified, all
* values are sorted in ascending order. Otherwise, a value is sorted in
* ascending order if its corresponding order is "asc", and descending if "desc".
*
* If a property name is provided for an iteratee the created `_.property`
* style callback returns the property value of the given element.
*
* If an object is provided for an iteratee the created `_.matches` style
* callback returns `true` for elements that have the properties of the given
* object, else `false`.
*
* @static
* @memberOf _
* @category Collection
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
* @param {boolean[]} [orders] The sort orders of `iteratees`.
* @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
* @returns {Array} Returns the new sorted array.
* @example
*
* var users = [
* { 'user': 'fred', 'age': 48 },
* { 'user': 'barney', 'age': 34 },
* { 'user': 'fred', 'age': 42 },
* { 'user': 'barney', 'age': 36 }
* ];
*
* // sort by `user` in ascending order and by `age` in descending order
* _.map(_.sortByOrder(users, ['user', 'age'], ['asc', 'desc']), _.values);
* // => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]
*/
function sortByOrder(collection, iteratees, orders, guard) {
if (collection == null) {
return [];
}
if (guard && isIterateeCall(iteratees, orders, guard)) {
orders = undefined;
}
if (!isArray(iteratees)) {
iteratees = iteratees == null ? [] : [iteratees];
}
if (!isArray(orders)) {
orders = orders == null ? [] : [orders];
}
return baseSortByOrder(collection, iteratees, orders);
}
module.exports = sortByOrder;
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