(function (name, root, factory) {
	if (typeof exports == 'object') {
		module.exports = factory();
	} else if (typeof define == 'function' && define.amd) {
		define(factory);
	} else {
		root[name] = factory();
	}
}('pagination', this, function () {


/**
 * Returns a pagination object.
 *
 * @param {Object} args
 * @return {Object} pager
 * @api public
 */

return function (args) {
	if (!args || !args.rows || !args.total)
		return new Error('parameters: {page: 1, links: 5, rows: 5, total: 50}');

	var page = args.page || 1,
		total = Math.ceil(parseInt(args.total) / parseInt(args.rows)),
		links = args.links || 5;
	links = links%2 ? links : links+1;
	links = Math.min(links, total);

	// no pagination
	if (page == 1 && page == total) {
		return null;
	}

	var pager = [];

	// left buttons
	if (page > 1) {
		pager.push({first: true, index: 1});
		pager.push({prev: true, index: page-1});
	}

	// page links
	var half = Math.floor(links/2);
	if (page-half <= 0) {
		var start = 1,
			end = links;
	} else if (page+half >= total) {
		var start = total-links+1,
			end = total;
	} else {
		var start = page-half,
			end = start+links-1;
	}
	for (var i=start; i <= end; i++) {
		pager.push(i == page ? {active: true, index: i} : {page: true, index: i});
	}

	// right buttons
	if (page < total) {
		pager.push({next: true, index: page+1});
		pager.push({last: true, index: total});
	}

	return pager;
}


}));