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/mocks/anilist/deleteMediaListEntry.ts

@@ -0,0 +1,15 @@
+import { HttpResponse, graphql } from "msw";
+
+export function deleteAnilistMediaListEntry() {
+  return graphql.mutation(
+    "DeleteMediaListEntry",
+    ({ variables: { entryId } }) =>
+      HttpResponse.json({
+        data: {
+          DeleteMediaListEntry: {
+            deleted: entryId > 0,
+          },
+        },
+      }),
+  );
+}

src/mocks/anilist/mediaListEntry.ts

@@ -0,0 +1,35 @@
+import { HttpResponse, graphql } from "msw";
+
+export function getAnilistMediaListEntry() {
+  return graphql.query("GetMediaListEntry", ({ variables: { titleId } }) => {
+    if (titleId === 10) {
+      return HttpResponse.json({
+        data: {
+          Media: {
+            mediaListEntry: {
+              id: 123456,
+            },
+          },
+        },
+      });
+    } else if (titleId === 139518) {
+      return HttpResponse.json({
+        data: {
+          Media: {
+            mediaListEntry: {
+              id: 123457,
+            },
+          },
+        },
+      });
+    }
+
+    return HttpResponse.json({
+      data: {
+        Media: {
+          mediaListEntry: null,
+        },
+      },
+    });
+  });
+}

src/mocks/handlers.ts

@@ -5,12 +5,16 @@ import { getAmvstrmTitle } from "./amvstrm/title";
 import { getAnifyEpisodes } from "./anify/episodes";
 import { getAnifySources } from "./anify/sources";
 import { getAnifyTitle } from "./anify/title";
+import { deleteAnilistMediaListEntry } from "./anilist/deleteMediaListEntry";
+import { getAnilistMediaListEntry } from "./anilist/mediaListEntry";
 import { getAnilistSearchResults } from "./anilist/search";
 import { getAnilistTitle } from "./anilist/title";
 import { updateAnilistWatchStatus } from "./anilist/updateWatchStatus";
 import { mockFcmMessageResponse } from "./fcm";
 
 export const handlers = [
+  deleteAnilistMediaListEntry(),
+  getAnilistMediaListEntry(),
   getAnilistSearchResults(),
   getAnilistTitle(),
   updateAnilistWatchStatus(),