added leaderboard (closes #29)

src/js/leaderboards.js

@@ -0,0 +1,109 @@
+const Popup=require('popup');
+const levels=require('levels');
+const config=require('config');
+
+const upload=async (mode, win, snek) => {
+	if(!win && !snek.rules.uploadOnDeath) return;
+	if(window.serverless) return;
+
+	const username=config.getS('player.name');
+	const score=snek.score;
+	const length=snek.length;
+	const time=snek.endPlayTime;
+	const speed=snek.speed;
+
+	const rst=await fetch('api/leaderboards/'+mode, {
+		method: 'POST',
+		headers: {
+			'Content-Type': 'application/json'
+		},
+		body: JSON.stringify({
+			username,
+			score, length,
+			time, speed
+		})
+	});
+	const dat=await rst.json();
+	if(!dat.ok) console.error(rst.err);
+};
+
+const show=async (mode='speedrun/1', page=1) => {
+	let popup=new Popup("Leaderboards: "+mode);
+
+	const [category, id]=mode.split('/');
+	let modes=[];
+	(() => {
+		Object.keys(window.levelList).forEach(cat => {
+			window.levelList[cat].levels.forEach(lvl => {
+				modes.push(cat+'/'+lvl);
+			});
+		});
+	})();
+	const prevMode=() => {
+		let idx=modes.indexOf(mode);
+		return modes[idx-1]||modes[modes.length-1];
+	};
+	const nextMode=() => {
+		let idx=modes.indexOf(mode);
+		return modes[idx+1]||modes[0];
+	};
+
+	const rules=await levels.getRules(category, id);
+	const sort=rules.leaderboardsSort;
+	const rst=await fetch('api/leaderboards/'+mode+'?sort='+sort+'&page='+page+'&results=10');
+	const {ok, data, err}=await rst.json();
+
+	popup.buttons.close="Close";
+	popup.buttons.modeP="Previous mode";
+	popup.buttons.modeN="Next mode";
+	popup.large=true;
+	popup.animation=false;
+
+	if(ok) {
+		popup.addStrong("Page "+page);
+		if(data.length==10) popup.buttons.next="Next page";
+		if(page>1) popup.buttons.prev="Previous page";
+
+		if(data.length==0) {
+			popup.addEm("No data");
+		} else {
+			const rpad=(n, digits=2, pad=' ') =>
+				((''+n).length>=digits)?(''+n):(rpad(pad+n, digits, pad));
+
+			popup.addTable(data.map(({username, score, length, speed, time}, i) => {
+				return {
+					rank: '#'+(i+(page-1)*10+1),
+					username,
+					score: score+'pts',
+					length,
+					speed: speed+'tps',
+					time: rpad(Math.floor(time/60000), 2, '0')+
+						':'+rpad(Math.floor(time/1000)%60, 2, '0')+
+						':'+rpad(time%1000, 3, '0')
+				};
+			}), [
+				'rank',
+				'username',
+				'score',
+				'length',
+				'speed',
+				'time'
+			]);
+		}
+	} else {
+		popup.addStrong("Error loading leaderboards");
+		popup.addEm(err);
+	}
+
+	Popup.dismiss();
+	const verb=await popup.display();
+	if(verb=='next') return show(mode, page+1);
+	else if(verb=='prev') return show(mode, page-1);
+	else if(verb=='modeP') return show(prevMode());
+	else if(verb=='modeN') return show(nextMode());
+	location.hash='';
+};
+
+return module.exports={
+	upload, show
+};