feat: support removing watch status when null

A user can choose to remove a show from being in their media list completely, by setting the watch status to null

src/controllers/watch-status/anilist.ts

@@ -1,9 +1,10 @@
 import { graphql } from "gql.tada";
 import { GraphQLClient } from "graphql-request";
 
-import type { WatchStatus } from "~/types/title";
+import { AnilistTitleNotFoundError } from "~/libs/errors/TitleNotFound";
+import type { WatchStatus } from "~/types/title/watchStatus";
 
-const UpdateWatchStatusQuery = graphql(`
+const UpdateWatchStatusMutation = graphql(`
   mutation UpdateWatchStatus($titleId: Int!, $watchStatus: MediaListStatus!) {
     SaveMediaListEntry(mediaId: $titleId, status: $watchStatus) {
       id
@@ -11,20 +12,60 @@ const UpdateWatchStatusQuery = graphql(`
   }
 `);
 
-/** Updates the watch status for a title on Anilist. If the token is null, the watch status will not be updated. */
+const GetMediaListEntryQuery = graphql(`
+  query GetMediaListEntry($titleId: Int!) {
+    Media(id: $titleId) {
+      mediaListEntry {
+        id
+      }
+    }
+  }
+`);
+
+const DeleteMediaListEntryMutation = graphql(`
+  mutation DeleteMediaListEntry($entryId: Int!) {
+    DeleteMediaListEntry(id: $entryId) {
+      deleted
+    }
+  }
+`);
+
+/** Updates the watch status for a title on Anilist. If the token is null, the watch status will not be updated.
+ *
+ * @returns true if the watch status was updated or if the token was null, false if it was not
+ */
 export async function maybeUpdateWatchStatusOnAnilist(
   titleId: number,
-  watchStatus: WatchStatus,
+  watchStatus: WatchStatus | null,
   aniListToken: string | undefined,
 ) {
   if (!aniListToken) {
-    return;
+    return true;
   }
 
   const client = new GraphQLClient("https://graphql.anilist.co/");
   const headers = new Headers({ Authorization: `Bearer ${aniListToken}` });
 
+  if (!watchStatus) {
+    return client
+      .request(GetMediaListEntryQuery, { titleId }, headers)
+      .then((data) => data?.Media?.mediaListEntry?.id)
+      .then((mediaListEntryId) => {
+        if (!mediaListEntryId) {
+          throw new AnilistTitleNotFoundError();
+        }
+
+        return client
+          .request(
+            DeleteMediaListEntryMutation,
+            { entryId: mediaListEntryId },
+            headers,
+          )
+          .then((data) => !!data?.DeleteMediaListEntry?.deleted);
+      });
+  }
+
   return client
-    .request(UpdateWatchStatusQuery, { titleId, watchStatus }, headers)
+    .request(UpdateWatchStatusMutation, { titleId, watchStatus }, headers)
     .then((data) => !!data?.SaveMediaListEntry?.id);
 }

src/controllers/watch-status/index.spec.ts

@@ -1,3 +1,5 @@
+import { eq } from "drizzle-orm";
+
 import { beforeEach, describe, expect, it } from "bun:test";
 
 import app from "~/index";
@@ -5,7 +7,7 @@ import { getTestDb } from "~/libs/test/getTestDb";
 import { getTestEnv } from "~/libs/test/getTestEnv";
 import { resetTestDb } from "~/libs/test/resetTestDb";
 import { server } from "~/mocks";
-import { deviceTokensTable } from "~/models/schema";
+import { deviceTokensTable, watchStatusTable } from "~/models/schema";
 
 server.listen();
 
@@ -89,4 +91,109 @@ describe("requests the /watch-status route", () => {
     expect(res.json()).resolves.toEqual({ success: true });
     expect(res.status).toBe(200);
   });
+
+  it("watch status is null, should succeed", async () => {
+    await db
+      .insert(deviceTokensTable)
+      .values({ deviceId: "123", token: "asd" });
+
+    const res = await app.request(
+      "/watch-status",
+      {
+        method: "POST",
+        headers: new Headers({
+          "x-anilist-token": "asd",
+          "Content-Type": "application/json",
+        }),
+        body: JSON.stringify({
+          deviceId: "123",
+          watchStatus: null,
+          titleId: 10,
+        }),
+      },
+      getTestEnv(),
+    );
+
+    expect(res.json()).resolves.toEqual({ success: true });
+    expect(res.status).toBe(200);
+  });
+
+  it("watch status is null, title does not exist, should succeed", async () => {
+    await db
+      .insert(deviceTokensTable)
+      .values({ deviceId: "123", token: "asd" });
+
+    const res = await app.request(
+      "/watch-status",
+      {
+        method: "POST",
+        headers: new Headers({
+          "x-anilist-token": "asd",
+          "Content-Type": "application/json",
+        }),
+        body: JSON.stringify({
+          deviceId: "123",
+          watchStatus: null,
+          titleId: -1,
+        }),
+      },
+      getTestEnv(),
+    );
+
+    expect(res.json()).resolves.toEqual({ success: true });
+    expect(res.status).toBe(200);
+  });
+
+  it("watch status is null, title exists, fails to delete entry, should succeed", async () => {
+    await db
+      .insert(deviceTokensTable)
+      .values({ deviceId: "123", token: "asd" });
+
+    const res = await app.request("/watch-status", {
+      method: "POST",
+      headers: new Headers({
+        "x-anilist-token": "asd",
+        "Content-Type": "application/json",
+      }),
+      body: JSON.stringify({
+        deviceId: "123",
+        watchStatus: null,
+        titleId: 139518,
+      }),
+    });
+
+    expect(res.json()).resolves.toEqual({ success: true });
+    expect(res.status).toBe(200);
+  });
+
+  it("watch status is null, should delete entry", async () => {
+    await db
+      .insert(deviceTokensTable)
+      .values({ deviceId: "123", token: "asd" });
+    await db.insert(watchStatusTable).values({ deviceId: "123", titleId: 10 });
+
+    await app.request(
+      "/watch-status",
+      {
+        method: "POST",
+        headers: new Headers({
+          "x-anilist-token": "asd",
+          "Content-Type": "application/json",
+        }),
+        body: JSON.stringify({
+          deviceId: "123",
+          watchStatus: null,
+          titleId: 10,
+        }),
+      },
+      getTestEnv(),
+    );
+    const row = await db
+      .select()
+      .from(watchStatusTable)
+      .where(eq(watchStatusTable.titleId, 10))
+      .get();
+
+    expect(row).toBeUndefined();
+  });
 });

src/controllers/watch-status/index.ts

@@ -16,7 +16,7 @@ const app = new OpenAPIHono<Env>();
 
 const UpdateWatchStatusRequest = z.object({
   deviceId: z.string(),
-  watchStatus: WatchStatus,
+  watchStatus: WatchStatus.nullable(),
   titleId: AniListIdSchema,
   isRetrying: z.boolean().optional().default(false),
 });
@@ -60,8 +60,12 @@ const route = createRoute({
 });
 
 app.openapi(route, async (c) => {
-  const { deviceId, watchStatus, titleId, isRetrying } =
-    await c.req.json<typeof UpdateWatchStatusRequest._type>();
+  const {
+    deviceId,
+    watchStatus,
+    titleId,
+    isRetrying = false,
+  } = await c.req.json<typeof UpdateWatchStatusRequest._type>();
   const aniListToken = c.req.header("X-AniList-Token");
 
   if (!isRetrying) {