refactor: introduce lex-serve package

1 files changed, 56 insertions, 0 deletions

diff --git a/lex-serve/assets/script.js b/lex-serve/assets/script.js
new file mode 100644
index 0000000..95b8393
--- /dev/null
+++ b/lex-serve/assets/script.js
@@ -0,0 +1,56 @@
+const searchInput = document.getElementById('search');
+const suggestionsDiv = document.getElementById('suggestions');
+
+async function enableAutocomplete() {
+	const res = await fetch('/laws.json');
+	const laws = await res.json();
+	// TODO: strip accents before searching
+
+	searchInput.addEventListener('input', (e) => {
+		if (searchInput.value == '') {
+			suggestionsDiv.innerHTML = '';
+			return;
+		}
+
+		const titleRegex = new RegExp(searchInput.value, 'i');
+		const abbrRegex = new RegExp('^' + searchInput.value, 'i');
+		const suggestions = [];
+
+		laws.map(l => {
+			const titleMatch = titleRegex.exec(l.title);
+			const abbrMatch = abbrRegex.exec(l.abbr);
+
+			return {
+				law: l,
+				titleScore: titleMatch ? titleMatch.index : Number.MAX_VALUE,
+				abbrScore: abbrMatch ? abbrMatch.index: Number.MAX_VALUE,
+			}
+		})
+		.filter(l => l.titleScore < Number.MAX_VALUE || l.abbrScore < Number.MAX_VALUE)
+		.sort((a,b) => {
+			let abbrDiff = a.abbrScore - b.abbrScore;
+			if (a.law.abbr && b.law.abbr && abbrDiff == 0 && a.abbrScore != Number.MAX_VALUE) {
+				abbrDiff = a.law.abbr.length - b.law.abbr.length;
+			}
+			return abbrDiff || a.titleScore - b.titleScore;
+		})
+		.slice(0, 30)
+		.forEach(x => {
+			const l = x.law;
+			const a = document.createElement('a');
+			if (l.redir)
+				a.href = '/' + l.redir;
+			else
+				a.href = l.url;
+			a.textContent = l.title;
+			const li = document.createElement('li');
+			li.appendChild(a);
+			suggestions.push(li);
+		});
+
+		suggestionsDiv.replaceChildren(...suggestions);
+	});
+}
+
+if ('json' in searchInput.dataset)
+	enableAutocomplete();
\ No newline at end of file