fix(tracking): skip watched episodes in bulk marks; read ratings without status

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

packages/core/test/tracking.test.ts

@@ -29,6 +29,7 @@ import {
   unwatchMovie,
   unwatchSeason,
   unwatchSeries,
+  watchSeason,
 } from "../src/tracking";
 
 beforeEach(() => {
@@ -297,6 +298,20 @@ describe("logEpisodeWatchBatch", () => {
     expect(row?.status).toBe("in_progress");
   });
 
+  test("skips episodes that are already watched", () => {
+    insertUser();
+    const { episodeIds } = insertTvShow("tv-1", 99999, 1, 3);
+    logEpisodeWatch("user-1", episodeIds[0]);
+    logEpisodeWatchBatch("user-1", episodeIds);
+
+    const watches = testDb
+      .select()
+      .from(userEpisodeWatches)
+      .where(eq(userEpisodeWatches.userId, "user-1"))
+      .all();
+    expect(watches).toHaveLength(3);
+  });
+
   test("no-op for empty array", () => {
     insertUser();
     logEpisodeWatchBatch("user-1", []);
@@ -310,6 +325,26 @@ describe("logEpisodeWatchBatch", () => {
   });
 });
 
+// ── watchSeason ─────────────────────────────────────────────────────
+
+describe("watchSeason", () => {
+  test("does not duplicate already-watched episodes", () => {
+    insertUser();
+    const { episodeIds } = insertTvShow("tv-1", 99999, 1, 3);
+    logEpisodeWatch("user-1", episodeIds[0]);
+    logEpisodeWatch("user-1", episodeIds[1]);
+    watchSeason("user-1", "tv-1-s1");
+
+    const watches = testDb
+      .select()
+      .from(userEpisodeWatches)
+      .where(eq(userEpisodeWatches.userId, "user-1"))
+      .all();
+    expect(watches).toHaveLength(3);
+    expect(new Set(watches.map((w) => w.episodeId)).size).toBe(3);
+  });
+});
+
 // ── markAllEpisodesWatched ──────────────────────────────────────────
 
 describe("markAllEpisodesWatched", () => {
@@ -647,6 +682,16 @@ describe("getUserTitleInfo", () => {
     expect(info.episodeWatches).toContain(episodeIds[1]);
   });
 
+  test("returns a rating for a title not in the library", () => {
+    insertUser();
+    insertTitle();
+    rateTitleStars("user-1", "title-1", 4);
+
+    const info = getUserTitleInfo("user-1", "title-1");
+    expect(info.rating).toBe(4);
+    expect(info.status).toBeNull();
+  });
+
   test("returns nulls when no data exists", () => {
     insertUser();
     insertTitle();

packages/db/src/queries/tracking.ts

@@ -95,7 +95,23 @@ export function batchInsertEpisodeWatchesTransaction(
   db.transaction((tx) => {
     const now = watchedAt ?? new Date();
 
-    for (const episodeId of episodeIds) {
+    // Bulk marking records state, not rewatches (single-episode logEpisodeWatch is the rewatch path).
+    const alreadyWatched = new Set(
+      tx
+        .select({ episodeId: userEpisodeWatches.episodeId })
+        .from(userEpisodeWatches)
+        .where(
+          and(
+            eq(userEpisodeWatches.userId, userId),
+            inArray(userEpisodeWatches.episodeId, episodeIds),
+          ),
+        )
+        .all()
+        .map((w) => w.episodeId),
+    );
+
+    for (const episodeId of new Set(episodeIds)) {
+      if (alreadyWatched.has(episodeId)) continue;
       tx.insert(userEpisodeWatches).values({ userId, episodeId, watchedAt: now, source }).run();
     }
 
@@ -254,22 +270,19 @@ export function getEpisodeProgressByTitleIds(userId: string, titleIds: string[])
 }
 
 export function getUserTitleInfo(userId: string, titleId: string) {
-  const info = db
-    .select({
-      status: userTitleStatus.status,
-      ratingStars: userRatings.ratingStars,
-    })
+  const statusRow = db
+    .select({ status: userTitleStatus.status })
     .from(userTitleStatus)
-    .leftJoin(
-      userRatings,
-      and(
-        eq(userRatings.userId, userTitleStatus.userId),
-        eq(userRatings.titleId, userTitleStatus.titleId),
-      ),
-    )
     .where(and(eq(userTitleStatus.userId, userId), eq(userTitleStatus.titleId, titleId)))
     .get();
 
+  // Ratings exist independently of library membership (rateTitleStars doesn't add a status row).
+  const ratingRow = db
+    .select({ ratingStars: userRatings.ratingStars })
+    .from(userRatings)
+    .where(and(eq(userRatings.userId, userId), eq(userRatings.titleId, titleId)))
+    .get();
+
   const watchedEpisodeIds = db
     .selectDistinct({ episodeId: userEpisodeWatches.episodeId })
     .from(userEpisodeWatches)
@@ -280,8 +293,8 @@ export function getUserTitleInfo(userId: string, titleId: string) {
     .map((w) => w.episodeId);
 
   return {
-    status: info?.status ?? null,
-    rating: info?.ratingStars ?? null,
+    status: statusRow?.status ?? null,
+    rating: ratingRow?.ratingStars ?? null,
     episodeWatches: watchedEpisodeIds,
   };
 }