var ws = new ReconnectingWebSocket( window.location.origin.replace('http', 'ws') +'/ws', null, { debug: false, reconnectInterval: 3000 } );

//request close before unloading
window.addEventListener('beforeunload', function(){
	ws.close();
});

ws.addEventListener( 'close', function( e ) {
  console.log( 'Closed connection' );
} );

class Timeline{
	constructor(ws, el, nr) {
		this.ws = ws;
		this.el = el;
		this.count = nr;
		this.eventDataSet = new vis.DataSet([
			{content: '.', start: new Date(), type: 'point', group: 1}
		]);
//		console.log('init timeline');

		let groups = [];
		for(let hid = 1; hid<=this.count; hid++) {
			groups.push({id: parseInt(hid), content: 'Hugvey #'+hid});
			this.eventDataSet.add({content: 'initiate', start: new Date(), type: 'point', group: parseInt(hid)})
		}

		this.dataGroups = new vis.DataSet(groups);
		let options = {
				maxHeight: '100%',
				height: '100%',
				margin : {
					item: {
						horizontal: 0,
						vertical: 5
					}
				},
				zoomMax: 3600000 // 1 h
//				'rollingMode': {'follow': true, 'offset': .8 }
			};
//		console.log('groups', this.dataGroups, groups, options);

		this.timeline = new vis.Timeline(this.el, this.eventDataSet, this.dataGroups, options);

		let tl = this.timeline;
		let startDate = new Date();
		startDate.setMinutes(startDate.getMinutes()-1);
		let endDate = new Date();
		endDate.setMinutes(endDate.getMinutes()+20);



//follow the timeline or not if checkbox is checked
setTimeout(function(){
	tl.setWindow(startDate, endDate);
}, 500);

this.moveInterval = setInterval(function(){
	// skip movement if not visible
	tl.moveTo(new Date());
}, 1000);

var checkbox = document.getElementById('follow_checkbox')

checkbox.addEventListener('change', (event) => {
  if (event.target.checked) {
		this.moveInterval = setInterval(function(){
			// skip movement if not visible
			tl.moveTo(new Date());
		}, 1000);
  } else {
    clearInterval(this.moveInterval)
  }
})


		ws.addEventListener( 'message', this);
	}

	handleEvent(e) {
//		console.log('handle it', e, this);
		if(e.type == 'message') {
			this.wsOnMessage(e)
		}
	}

	wsOnMessage(e) {
	    let msg = JSON.parse( e.data );

	    if ( typeof msg['action'] === 'undefined' ) {
	        console.error( "not a valid message: " + e.data );
	        return;
	    }

	    if(msg['action'] == 'status') {
	    	for(let hv of msg['hugveys']){
	    		console.log(hv['language'], hv['status']);
	    		let evenOdd = parseInt(hv['id'])%2 ? 'odd': 'even';
	    		let availableClass = hv['available'] ? 'is-available' : 'is-not-available' 
	    		this.dataGroups.update({id: parseInt(hv['id']), content: 'Hugvey #'+hv['id'], className: `status-${hv['status']} ${availableClass} lang-${hv['language']} ${evenOdd}`})
	    	}
	    }

	    if(msg['action'] != 'log') {
	    	return;
	    }

	    console.debug(msg, this);

    	let hv_id = parseInt(msg['id']);
//		        		 {'action': 'log', 'id':hugvey_id, 'type': items[0], 'info', 'args'}
		let d, parts;
		switch(msg['type']){
			case 'message':
//		        				info:  en-njsm8bwbd "Are you up for a conversation?"
				parts = msg['info'].trim().split(' ');
				let msgId = parts.shift();
				let msgUuid = parts.shift();
				let msgEvent = parts.shift();
				let msgContent = parts.join(' ');
				let mId = 'm-'+msgUuid+'-'+hv_id;
				d = this.eventDataSet.get(mId);
				console.log(msgId, msgEvent, msgContent);
				if(d !== null && msgEvent == 'done'){
					d['end'] = new Date();
					this.eventDataSet.update(d);
					console.log('update', d);
				} else {
					this.eventDataSet.add({id: mId, content: msgContent, title: `${msgContent} (${msgId})`, start: new Date(), end: new Date(Date.now()+5000), group: hv_id, 'className': 'message'});
				}
				break;
			case 'speaking':
//		        				start/content/end
				parts = msg['info'].trim().split(' ');
				let info = parts.shift();
				let id = parts.shift();
				let content = parts.join(' ');
				let scId = 'sc-'+id+'-'+hv_id;

				if(info.startsWith('start')){
					this.eventDataSet.add({content: info, start: new Date(), end: new Date(Date.now() + 1000), type: 'point', group: hv_id, 'className': 'speech'});
				}
				if(info.startsWith('content')){
					d = this.eventDataSet.get(scId);
					if(d !== null){
						console.log('alter');
						d['content'] = content;
						d['end']= new Date();
						d['title'] = content;
						this.eventDataSet.update(d);
					} else {
						console.log('add');
						this.eventDataSet.add({id: scId, content: content, title: content, start: new Date(), end: new Date(Date.now() + 1000), group: hv_id, 'className': 'speech'});
					}
				}
				if(info.startsWith('end')){
					d = this.eventDataSet.get(scId);
					if(d !== null){
    					d['end'] = new Date();
    					this.eventDataSet.update(d);
					}
				}

				break;
			case 'story':
//		        				'info': 'start'/'finished'
				this.eventDataSet.add({
					content: msg['type'] +': ' + msg['info'] + (msg.hasOwnProperty('args')? ': '+msg['args'] : ""),
					start: new Date(), type: 'point', group: hv_id, 'className': 'story'});
				break;

			case 'condition':
			case 'direction':
				// don't draw these :-0
				break;
			default:
				this.eventDataSet.add({
					content: msg['type'] +': ' + msg['info'] +  (msg.hasOwnProperty('args')? ': '+msg['args'] : ""),
					start: new Date(), type: 'point', group: hv_id, 'className': msg['lvlname']});
				break;
		}
	}
}

var tl = new Timeline(ws, document.getElementById('line'), 26);