refactor: split ask flow state and view models

tests/editor-state.test.ts

@@ -0,0 +1,92 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { createInitialState } from "../src/state/create.ts";
+import {
+	getEditorDraft,
+	saveEditorDraft,
+	submitEditorDraft,
+	syncStateToSelection,
+} from "../src/state/editor.ts";
+import { enterQuestionNoteMode } from "../src/state/transitions.ts";
+
+test("syncStateToSelection opens input when custom option is active", () => {
+	const state = {
+		...createInitialState({
+			questions: [
+				{
+					id: "q1",
+					prompt: "Pick one",
+					options: [{ value: "a", label: "A" }],
+				},
+			],
+		}),
+		activeOptionIndex: 1,
+	};
+
+	const next = syncStateToSelection(state);
+	assert.equal(next.view.kind, "input");
+	assert.equal(next.view.questionId, "q1");
+});
+
+test("saveEditorDraft stores question note drafts without advancing", () => {
+	const state = enterQuestionNoteMode(
+		createInitialState({
+			questions: [
+				{
+					id: "q1",
+					prompt: "Question?",
+					options: [{ value: "a", label: "A" }],
+				},
+			],
+		}),
+		"q1"
+	);
+
+	const next = saveEditorDraft(state, "needs examples");
+	assert.equal(next.view.kind, "navigate");
+	assert.equal(next.answers.q1.note, "needs examples");
+});
+
+test("submitEditorDraft advances submitted custom answers", () => {
+	const state = syncStateToSelection({
+		...createInitialState({
+			questions: [
+				{
+					id: "q1",
+					prompt: "Pick one",
+					options: [{ value: "a", label: "A" }],
+				},
+			],
+		}),
+		activeOptionIndex: 1,
+	});
+
+	const next = submitEditorDraft(state, "custom answer");
+	assert.equal(next.answers.q1.customText, "custom answer");
+	assert.equal(next.view.kind, "submit");
+});
+
+test("getEditorDraft reads saved note and custom text from view", () => {
+	let state = syncStateToSelection({
+		...createInitialState({
+			questions: [
+				{
+					id: "q1",
+					prompt: "Pick one",
+					options: [{ value: "a", label: "A" }],
+				},
+			],
+		}),
+		activeOptionIndex: 1,
+	});
+	state = saveEditorDraft(state, "draft answer");
+	state = enterQuestionNoteMode(state, "q1");
+	state = saveEditorDraft(state, "saved note");
+	state = enterQuestionNoteMode(state, "q1");
+
+	assert.equal(getEditorDraft(state), "saved note");
+	assert.equal(
+		getEditorDraft({ ...state, view: { kind: "input", questionId: "q1" } }),
+		"draft answer"
+	);
+});