metadata-based-explorer1
Version:
Box UI Elements
61 lines (55 loc) • 2.41 kB
JavaScript
/**
*
* @file Function to sort item list
* @author Box
*/
import { TYPE_FILE, TYPE_FOLDER, SORT_DESC, FIELD_MODIFIED_AT, FIELD_INTERACTED_AT, FIELD_NAME, FIELD_SIZE } from '../constants';
/**
* Comparator function for sorting files and folders
*
* @param {string} sortBy field to sort by
* @param {string} sortDirection desc or asc
* @return {Function} comparator function
*/
export default function (sortBy, sortDirection, cache) {
var invert = sortDirection === SORT_DESC ? 1 : -1;
return function (a, b) {
var itemA = cache.get(a);
var itemB = cache.get(b);
var itemAType = itemA.type || TYPE_FILE;
var itemBType = itemB.type || TYPE_FILE;
var itemAName = itemA.name || '';
var itemBName = itemB.name || '';
var itemADate = Date.parse(itemA.modified_at || '0');
var itemBDate = Date.parse(itemB.modified_at || '0');
var itemAInteractedDate = Date.parse(itemA.interacted_at || itemA.modified_at || '0');
var itemBInteractedDate = Date.parse(itemB.interacted_at || itemB.modified_at || '0');
var itemASize = itemA.size || 0;
var itemBSize = itemB.size || 0; // If a and b are of the same type, then use sortBy
if (itemAType === itemBType) {
if (sortBy === FIELD_NAME) {
if (itemAName.toLowerCase() > itemBName.toLowerCase()) return -1 * invert;
if (itemAName.toLowerCase() < itemBName.toLowerCase()) return 1 * invert;
} else if (sortBy === FIELD_MODIFIED_AT) {
if (itemADate > itemBDate) return -1 * invert;
if (itemADate < itemBDate) return 1 * invert;
} else if (sortBy === FIELD_INTERACTED_AT) {
if (itemAInteractedDate > itemBInteractedDate) return -1 * invert;
if (itemAInteractedDate < itemBInteractedDate) return 1 * invert;
} else if (sortBy === FIELD_SIZE) {
if (itemASize > itemBSize) return -1 * invert;
if (itemASize < itemBSize) return 1 * invert;
} else {
// Should never reach here
throw new Error('Unsupported sort field!');
}
return 0;
} // If a and b are of different types, then use type to sort
// Folder > File > WebLink
if (itemAType === TYPE_FOLDER) return -1;
if (itemBType === TYPE_FOLDER) return 1;
if (itemAType === TYPE_FILE) return -1;
if (itemBType === TYPE_FILE) return 1; // Should never reach here
throw new Error('Error in sort comparator!');
};
}