path: root/view/js/autocomplete.js

/**
 * Red people autocomplete
 *
 * require jQuery, jquery.textcomplete
 */

function mysearch(term, callback, backend_url, extra_channels) {
	// Check if there is a cached result that contains the tsame information we would get with a full server-side search
	for(t in mysearch.cache) {
		if(term.indexOf(t) >= 0) { // A more broad search has been performed already, so use those results
			// Filter old results locally
			var matching = mysearch.cache[t].filter(function (x) { return (x.name.indexOf(term) >= 0 || x.nick.indexOf(term) >= 0); });
			callback(matching);
			return;
		}
	}

	var postdata = {
		start:0,
		count:100,
		search:term,
		type:'c',
	}

	if(extra_channels)
		postdata['extra_channels[]'] = extra_channels;
	
	$.ajax({
		type:'POST',
		url: backend_url,
		data: postdata,
		dataType: 'json',
		success:function(data){
			// Cache results if we got them all (more information would not improve results)
			// data.count represents the maximum number of items
			if(data.items.length < data.count) {
				mysearch.cache[term] = data.items;
			}
			callback(data.items);
		},
	}).fail(function () {callback([]); }); // Callback must be invoked even if something went wrong.
}
mysearch.cache = {};

function format(item) {
	return "<div class='{0}' title='{4}'><img src='{1}'>{2} ({3})</div>".format(item.taggable, item.photo, item.name, ((item.label) ? item.nick + ' ' + item.label : item.nick), item.link )
}

function replace(item) {
	// $2 ensures that prefix (@,@!) is preserved
	var id = item.id;
	 // 16 chars of hash should be enough. Full hash could be used if it can be done in a visually appealing way.
	// 16 chars is also the minimum length in the backend (otherwise it's interpreted as a local id).
	if(id.length > 16) 
		id = item.id.substring(0,16);
	return '$1$2'+item.nick.replace(' ','') + '+' + id;
}

/**
 * jQuery plugin 'contact_autocomplete'
 */
(function( $ ){
	$.fn.contact_autocomplete = function(backend_url, extra_channels) {
	if (typeof extra_channels === 'undefined') extra_channels = false;

	// Autocomplete contacts
	contacts = {
		match: /(^|\s)(@\!*)([^ \n]+)$/,
		index: 3,
		search: function(term, callback) { mysearch(term, callback, backend_url, extra_channels); },
		replace: replace,
		template: format,
	}

	smilies = {
		match: /(^|\s)(:[a-z]{2,})$/,
		index: 2,
		search: function(term, callback) { $.getJSON('/smilies/json').done(function(data) { callback($.map(data, function(entry) { return entry['text'].indexOf(term) === 0 ? entry : null })) }) },
		template: function(item) { return item['icon'] + item['text'] },
		replace: function(item) { return "$1"+item['text'] + ' '; },
	}
	this.textcomplete([contacts,smilies],{className:'acpopup'});
  };
})( jQuery );