Release v0.1.8 2026-07-13

src/frontend/saveContinuation.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+import { createHunterSave } from "./data";
+import { resolveSaveContinuation, saveVersionsMatch } from "./saveContinuation";
+
+function save(updatedAt: string) {
+  return createHunterSave(1, updatedAt, "Test Hunter");
+}
+
+describe("save continuation", () => {
+  it("creates only when neither copy exists", () => {
+    expect(resolveSaveContinuation({ local: null, online: null })).toBe("create");
+  });
+
+  it("uses whichever single copy exists", () => {
+    const local = save("2026-07-13T12:00:00.000Z");
+    const online = save("2026-07-13T13:00:00.000Z");
+    expect(resolveSaveContinuation({ local, online: null })).toBe("local");
+    expect(resolveSaveContinuation({ local: null, online })).toBe("online");
+  });
+
+  it("asks only when online copy is newer", () => {
+    const local = save("2026-07-13T12:00:00.000Z");
+    expect(resolveSaveContinuation({ local, online: save("2026-07-13T13:00:00.000Z") })).toBe("choose");
+    expect(resolveSaveContinuation({ local, online: save("2026-07-13T11:00:00.000Z") })).toBe("local");
+    expect(resolveSaveContinuation({ local, online: save(local.updatedAt) })).toBe("local");
+  });
+
+  it("matches downloaded copies by slot and timestamp", () => {
+    const local = save("2026-07-13T12:00:00.000Z");
+    expect(saveVersionsMatch(local, save(local.updatedAt))).toBe(true);
+    expect(saveVersionsMatch(local, save("2026-07-13T13:00:00.000Z"))).toBe(false);
+    expect(saveVersionsMatch(local, null)).toBe(false);
+  });
+});

src/frontend/saveContinuation.ts

@@ -0,0 +1,22 @@
+import type { HunterSave, SaveSlotState } from "./types";
+
+export type SaveContinuation = "create" | "local" | "online" | "choose";
+
+function saveTimestamp(save: HunterSave): number | null {
+  const timestamp = Date.parse(save.updatedAt);
+  return Number.isFinite(timestamp) ? timestamp : null;
+}
+
+export function resolveSaveContinuation(slot: Pick<SaveSlotState, "local" | "online">): SaveContinuation {
+  if (!slot.local) return slot.online ? "online" : "create";
+  if (!slot.online) return "local";
+
+  const localTimestamp = saveTimestamp(slot.local);
+  const onlineTimestamp = saveTimestamp(slot.online);
+  if (localTimestamp !== null && onlineTimestamp !== null && onlineTimestamp > localTimestamp) return "choose";
+  return "local";
+}
+
+export function saveVersionsMatch(local: HunterSave | null, online: HunterSave | null): boolean {
+  return Boolean(local && online && local.slotId === online.slotId && local.updatedAt === online.updatedAt);
+}