'use strict';

define([
	'underscore', 'reflux', 'app/actions/build', 'app/connect'
], function(
	_, Reflux, BuildActions, connect
) {
	var Store = Reflux.createStore({
		listenables: BuildActions,

		init: function() {
			// the only purpose of this hash to reconnect all the time
			// except first, see notes at using
			this.connectedResourcesHash = {};
		},

		onReadTerminalOutput: function(build) {
			var self = this,
				output = [],
				resourceName = 'build' + build.id;

			var connectToBuildDataResource = function() {
				// reconnect for get data below (at subscribe), coz
				// data emitted only once during connect
				if (self.connectedResourcesHash[resourceName]) {
					connect.resource(resourceName).reconnect();
				} else {
					self.connectedResourcesHash[resourceName] = 1;
				}

				connect.resource(resourceName).subscribe('data', function(data) {
					var lastLine = _(self.lines).last();
					if (lastLine && (_(data.lines).first().number === lastLine.number)) {
						self.lines = _(self.lines).initial();
					}
					self.lines = self.lines.concat(data.lines);
					self.trigger({
						buildId: build.id,
						buildCompleted: build.completed,
						name: 'Console for build #' + build.id,
						data: _(self.lines).pluck('text')
					});
				});
			};

			this.lines = [];
			this.currentLine = '';

			// create data resource for completed build
			if (build.completed) {
				connect.resource('projects').sync(
					'createBuildDataResource',
					{buildId: build.id},
					function(err) {
						if (err) throw err;
						connectToBuildDataResource();
					}
				);
			} else {
				connectToBuildDataResource();
			}
		}
	});

	return Store;
});