refactor(ask): reorganize ask flow internals

src/result-format.ts

@@ -0,0 +1,86 @@
+import type { AskResult } from "./types.ts";
+
+export function formatResultLines(
+	result: AskResult,
+	options: { mode: "summary" | "render" },
+): string[] {
+	const lines: string[] = [];
+
+	for (const question of result.questions) {
+		const answer = result.answers[question.id];
+		if (!answer) {
+			continue;
+		}
+
+		const answerLine = formatAnswerLine(question.label, answer, options.mode);
+		if (answerLine) {
+			lines.push(answerLine);
+		}
+
+		const questionNoteLine = formatQuestionNoteLine(
+			question.label,
+			answer.note,
+			options.mode,
+		);
+		if (questionNoteLine) {
+			lines.push(questionNoteLine);
+		}
+
+		lines.push(...formatOptionNoteLines(question.label, answer, options.mode));
+	}
+
+	return lines;
+}
+
+function formatAnswerLine(
+	questionLabel: string,
+	answer: AskResult["answers"][string],
+	mode: "summary" | "render",
+): string | undefined {
+	const answerText = answer.customText ?? answer.labels.join(", ");
+	if (!answerText) {
+		return undefined;
+	}
+	if (mode === "summary") {
+		return `${questionLabel}: ${answerText}`;
+	}
+	if (answer.customText) {
+		return `✓ ${questionLabel}: (wrote) ${answerText}`;
+	}
+	return `✓ ${questionLabel}: ${answerText}`;
+}
+
+function formatQuestionNoteLine(
+	questionLabel: string,
+	note: string | undefined,
+	mode: "summary" | "render",
+): string | undefined {
+	if (!note) {
+		return undefined;
+	}
+	return mode === "summary"
+		? `${questionLabel} note: ${note}`
+		: `  note: ${note}`;
+}
+
+function formatOptionNoteLines(
+	questionLabel: string,
+	answer: AskResult["answers"][string],
+	mode: "summary" | "render",
+): string[] {
+	const lines: string[] = [];
+	for (let index = 0; index < answer.values.length; index++) {
+		const value = answer.values[index];
+		const label = answer.labels[index] ?? value;
+		const note = answer.optionNotes?.[value];
+		if (!note) {
+			continue;
+		}
+		lines.push(
+			mode === "summary"
+				? `${questionLabel} / ${label} note: ${note}`
+				: `  ${label} note: ${note}`,
+		);
+	}
+	return lines;
+}