refactor: extract MEDIA parsing helper and tidy whitespace

src/media/parse.ts

@@ -0,0 +1,57 @@
+// Shared helpers for parsing MEDIA tokens from command/stdout text.
+
+export const MEDIA_LINE_RE = /\bMEDIA:/i;
+export const MEDIA_TOKEN_RE = /\bMEDIA:\s*([^\s]+)/i;
+
+export function normalizeMediaSource(src: string) {
+	if (src.startsWith("file://")) return src.replace("file://", "");
+	return src;
+}
+
+export function splitMediaFromOutput(raw: string): {
+	text: string;
+	mediaUrl?: string;
+} {
+	const trimmedRaw = raw.trim();
+	let text = trimmedRaw;
+	let mediaUrl: string | undefined;
+
+	const mediaLine = trimmedRaw.split("\n").find((line) => MEDIA_LINE_RE.test(line));
+	if (!mediaLine) {
+		return { text: trimmedRaw };
+	}
+
+	let isValidMedia = false;
+	const mediaMatch = mediaLine.match(MEDIA_TOKEN_RE);
+	if (mediaMatch?.[1]) {
+		const candidate = normalizeMediaSource(mediaMatch[1]);
+		const looksLikeUrl = /^https?:\/\//i.test(candidate);
+		const looksLikePath = candidate.startsWith("/") || candidate.startsWith("./");
+		const hasWhitespace = /\s/.test(candidate);
+		isValidMedia =
+			!hasWhitespace && candidate.length <= 1024 && (looksLikeUrl || looksLikePath);
+		if (isValidMedia) {
+			mediaUrl = candidate;
+		}
+	}
+
+	if (isValidMedia && mediaMatch?.[0]) {
+		text = trimmedRaw
+			.replace(mediaMatch[0], "")
+			.replace(/[ \t]{2,}/g, " ")
+			.replace(/[ \t]+\n/g, "\n")
+			.replace(/\n{2,}/g, "\n")
+			.trim();
+	} else {
+		text = trimmedRaw
+			.split("\n")
+			.filter((line) => line !== mediaLine)
+			.join("\n")
+			.replace(/[ \t]{2,}/g, " ")
+			.replace(/[ \t]+\n/g, "\n")
+			.replace(/\n{2,}/g, "\n")
+			.trim();
+	}
+
+	return { text, mediaUrl };
+}