X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/0f3a55ca3cfa02e2446a20dc050d04490b23bb8d..5d0bed0b1a591ba0f12526961a5d857d36df0267:/word/quiz.js

diff --git a/word/quiz.js b/word/quiz.js
index 0518fa1..dce5f7a 100644
--- a/word/quiz.js
+++ b/word/quiz.js
@@ -1,33 +1,169 @@
-class Quiz {
-	next() {
-		let word = this.words.shift();
-		let form = put(this.form,
-			'+img[src=$]+ul', `/data/word/en/${word[0]}.jpg`,
-		);
-
-		let answers = [word[2], this.words[1][2], this.words[2][2], this.words[3][2]]
-			.sort(() => {return .5 - Math.random()}) // shuffle
-		answers.forEach(suggest => {
-			let label = suggest.replace(/\/.*/, '');
-			let option = put(form, 'li', label, {onclick: () => {
-				if (suggest != word[2]) {
-					// incorrect
-					put(option, '.wrong');
-					return;
-				}
-				put(option, '.good');
-				window.setTimeout(() => this.next(), 500);
-			}});
-		});
+Array.prototype.shuffle = function () {
+	for (let i = this.length - 1; i > 0; i--) {
+		const j = Math.floor(Math.random() * (i + 1)); // random index 0..i
+		[this[i], this[j]] = [this[j], this[i]]; // swap elements
+	}
+	return this;
+};
+
+function hashparams() {
+	// location.hash is not encoded in firefox
+	const encodedhash = (window.location.href.split('#'))[1] || '';
+	return decodeURIComponent(encodedhash).split('#');
+}
+
+class Words {
+	constructor(data, root = undefined) {
+		this.data = data;
+		this.selection = root || this.data[''][3];
+		this.visible = new Set(root || Object.keys(data).flatMap(id => id && parseInt(id)));
+		if (root) {
+			let children = root;
+			for (let loop = 0; children.length && loop < 20; loop++) {
+				for (let child of children) this.visible.add(child);
+				children = children.map(cat => data[cat][3]).filter(is => is).flat();
+			}
+		}
+	}
+
+	filter(f) {
+		// keep only matching entries, and root selection regardless
+		this.visible = new Set([...this.visible].filter(f).concat(this.selection));
+	}
+
+	*root() {
+		for (let i of this.selection) {
+			if (!this.has(i)) {
+				continue;
+			}
+			yield this.get(i);
+		}
 	}
 
-	constructor(dataurl) {
-		fetch(dataurl).then(res => res.json()).then(json => {
-			this.form = document.getElementById('quiz');
-			this.words = Object.values(json)
-				.sort(() => {return .5 - Math.random()}) // shuffle
-				.map(row => row.split(/:/))
-			this.next();
+	*random() {
+		let order = [...this.visible.keys()].shuffle();
+		for (let i of order) {
+			if (!this.has(i)) {
+				continue;
+			}
+			yield this.get(i);
+		}
+	}
+
+	has(id) {
+		return this.visible.has(id);
+	}
+
+	subs(id) {
+		let refs = this.data[id][3];
+		if (!refs) {
+			return [];
+		}
+		for (let ref of refs) {
+			// retain orphaned references in grandparent categories
+			if (!this.has(ref)) {
+				refs = refs.concat(this.subs(ref));
+			}
+		}
+		return refs;
+	}
+
+	get(id) {
+		if (!this.has(id)) {
+			return;
+		}
+		const p = this;
+		const row = this.data[id];
+		return row && {
+			id: id,
+			title: row[0],
+			get label() {
+				return row[0].replace(/\/.*/, ''); // primary form
+			},
+			level: row[1],
+			imgid: row[2],
+			thumb(size = 32) {
+				return `/data/word/${size}/${row[2]}.jpg`;
+			},
+			get subs() {
+				return p.subs(id).map(e => p.get(e));
+			},
+		};
+	}
+}
+
+class WordQuiz {
+	dataselect(json) {
+		this.data = this.datafilter(json);
+		return [...this.data.random()];
+	}
+
+	datafilter(json) {
+		// find viable rows from json data
+		const selection = new Words(json, this.preset.cat);
+
+		if (this.preset.images) {
+			selection.filter(id => json[id][2]);
+		}
+		if (this.preset.level !== undefined) {
+			selection.filter(id => json[id][1] <= this.preset.level);
+		}
+
+		if (this.preset.distinct) {
+			// remove referenced categories
+			selection.filter(id => !selection.get(id).subs.length);
+		}
+
+		return selection;
+	}
+
+	configure(params = hashparams()) {
+		const opts = new Map(params.map(arg => arg.split(/[:=](.*)/)));
+		for (let [query, val] of opts) {
+			if (query.match(/^\d+$/)) {
+				this.preset.cat = [parseInt(query)];
+			}
+			else if (query === 'level') {
+				this.preset.level = parseInt(val);
+			}
+			else {
+				this.preset[query] = val;
+			}
+		}
+		this.preset.dataurl = `/data/wordlist.${this.preset.lang}.json`
+	}
+
+	setup() {
+		this.form = document.getElementById('quiz');
+	}
+
+	load() {
+		this.configure();
+		fetch(this.preset.dataurl).then(res => res.json()).then(json => {
+			this.words = this.dataselect(json)
+			this.setup();
 		});
 	}
-};
+
+	log(...args) {
+		this.history.push([new Date().toISOString(), ...args]);
+	}
+
+	stop(...args) {
+		this.log(...args);
+		window.onbeforeunload = null;
+		fetch('/word/report', {method: 'POST', body: JSON.stringify(this.history)});
+	}
+
+	constructor() {
+		this.preset = {images: true, lang: 'en'};
+		this.load();
+		this.history = [];
+		window.onbeforeunload = e => {
+			this.stop('abort');
+		};
+		window.onhashchange = e => {
+			this.load();
+		};
+	}
+}