feat: support fetching "currently watching" titles when logging in

src/controllers/auth/anilist/getUsername.ts

@@ -0,0 +1,27 @@
+import { graphql } from "gql.tada";
+import { GraphQLClient } from "graphql-request";
+
+const GetUsernameQuery = graphql(`
+  query GetUsername {
+    Viewer {
+      name
+    }
+  }
+`);
+
+export function getUsername(aniListToken: string) {
+  const client = new GraphQLClient("https://graphql.anilist.co/");
+
+  return client
+    .request(GetUsernameQuery, undefined, {
+      Authorization: `Bearer ${aniListToken}`,
+    })
+    .then((data) => data?.Viewer?.name)
+    .catch((err) => {
+      if (err.response?.status === 401 || err.response?.status === 429) {
+        return null;
+      }
+
+      throw err;
+    });
+}

src/controllers/auth/anilist/getWatchingTitles.ts

@@ -0,0 +1,79 @@
+import { graphql } from "gql.tada";
+import { GraphQLClient } from "graphql-request";
+
+const GetWatchingTitlesQuery = graphql(`
+  query GetWatchingTitles($userName: String!, $page: Int!) {
+    Page(page: $page, perPage: 50) {
+      mediaList(
+        userName: $userName
+        type: ANIME
+        sort: UPDATED_TIME_DESC
+        status_in: [CURRENT, REPEATING, PLANNING]
+      ) {
+        media {
+          id
+          idMal
+          title {
+            english
+            userPreferred
+          }
+          description
+          episodes
+          genres
+          status
+          bannerImage
+          averageScore
+          coverImage {
+            extraLarge
+            large
+            medium
+          }
+          countryOfOrigin
+          mediaListEntry {
+            id
+            progress
+            status
+          }
+          nextAiringEpisode {
+            timeUntilAiring
+            airingAt
+            episode
+          }
+        }
+      }
+      pageInfo {
+        currentPage
+        hasNextPage
+        perPage
+      }
+    }
+  }
+`);
+
+export function getWatchingTitles(
+  username: string,
+  page: number,
+  executionCtx: ExecutionContext,
+) {
+  const client = new GraphQLClient("https://graphql.anilist.co/");
+
+  return client
+    .request(GetWatchingTitlesQuery, { userName: username, page })
+    .then((data) => data?.Page!)
+    .catch((err) => {
+      const response = err.response;
+      if (response.status === 429) {
+        console.log("429, retrying in", response.headers.get("Retry-After"));
+        executionCtx.waitUntil(
+          sleep(Number(response.headers.get("Retry-After")!) * 1000),
+        );
+        return getWatchingTitles(username, page, executionCtx);
+      }
+
+      throw err;
+    });
+}
+
+function sleep(ms: number) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}

src/controllers/auth/anilist/index.ts

@@ -0,0 +1,161 @@
+import { OpenAPIHono, createRoute, z } from "@hono/zod-openapi";
+import { env } from "hono/adapter";
+import { streamSSE } from "hono/streaming";
+
+import { fetchEpisodes } from "~/controllers/episodes/getByAniListId";
+import { maybeScheduleNextAiringEpisode } from "~/libs/maybeScheduleNextAiringEpisode";
+import { readEnvVariable } from "~/libs/readEnvVariable";
+import { setWatchStatus } from "~/models/watchStatus";
+import type { Env } from "~/types/env";
+import { EpisodesResponseSchema } from "~/types/episode";
+import { ErrorResponse, ErrorResponseSchema } from "~/types/schema";
+import { Title } from "~/types/title";
+
+import { getUsername } from "./getUsername";
+import { getWatchingTitles } from "./getWatchingTitles";
+
+const route = createRoute({
+  tags: ["aniplay", "auth"],
+  summary:
+    "Authenticate with AniList and return all upcoming and 'currently watching' titles",
+  operationId: "authenticateAniList",
+  method: "get",
+  path: "/",
+  request: {
+    query: z.object({
+      token: z.string(),
+      deviceId: z.string(),
+      // "x-anilist-token": z.string(),
+      // "x-aniplay-device-id": z.string(),
+    }),
+  },
+  responses: {
+    200: {
+      content: {
+        "text/event-stream": {
+          schema: z.object({ title: Title, episodes: EpisodesResponseSchema }),
+        },
+      },
+      description: "Streams a list of titles",
+    },
+    401: {
+      content: {
+        "application/json": {
+          schema: ErrorResponseSchema,
+        },
+      },
+      description: "Failed to authenticate with AniList",
+    },
+    500: {
+      content: {
+        "application/json": {
+          schema: ErrorResponseSchema,
+        },
+      },
+      description: "Error fetching episodes",
+    },
+  },
+});
+
+const app = new OpenAPIHono<Env>();
+
+app.openapi(route, async (c) => {
+  // const deviceId = await c.req.header("X-Aniplay-Device-Id");
+  // const aniListToken = await c.req.header("X-AniList-Token");
+  const { deviceId, token: aniListToken } = await c.req.query();
+
+  if (!aniListToken) {
+    return c.json(ErrorResponse, { status: 401 });
+  }
+
+  try {
+    const username = await getUsername(aniListToken);
+    if (!username) {
+      return c.json(ErrorResponse, { status: 401 });
+    }
+
+    return streamSSE(
+      c,
+      async (stream) => {
+        let currentPage = 1;
+        let hasNextPage = true;
+
+        do {
+          const { mediaList, pageInfo } = await getWatchingTitles(
+            username,
+            currentPage++,
+            c.executionCtx,
+          );
+          if (!mediaList) {
+            break;
+          }
+
+          for (const mediaObj of mediaList) {
+            const media = mediaObj?.media!;
+            if (!media) {
+              continue;
+            }
+
+            const mediaListEntry = media.mediaListEntry;
+            if (mediaListEntry) {
+              const { wasAdded } = await setWatchStatus(
+                env(c, "workerd"),
+                deviceId!,
+                media.id,
+                mediaListEntry.status,
+              );
+              if (wasAdded) {
+                await maybeScheduleNextAiringEpisode(
+                  env<Env, typeof c>(c, "workerd"),
+                  c.req,
+                  media.id,
+                );
+              }
+            }
+
+            const nextEpisode = media.nextAiringEpisode?.episode;
+            if (
+              nextEpisode === 0 ||
+              nextEpisode === 1 ||
+              media.status === "NOT_YET_RELEASED"
+            ) {
+              await stream.writeSSE({
+                event: "title",
+                data: JSON.stringify({ title: media, episodes: [] }),
+                id: media.id.toString(),
+              });
+              continue;
+            }
+
+            await fetchEpisodes(
+              media.id,
+              readEnvVariable<boolean>(c.env, "ENABLE_ANIFY"),
+            ).then(({ result: episodes }) => {
+              stream.writeSSE({
+                event: "title",
+                data: JSON.stringify({ title: media, episodes }),
+                id: media.id.toString(),
+              });
+            });
+          }
+
+          hasNextPage = pageInfo?.hasNextPage ?? false;
+          console.log(hasNextPage);
+        } while (hasNextPage);
+
+        await stream.close();
+      },
+      async (err, stream) => {
+        stream.writeln("An error occurred!");
+        console.error(err);
+      },
+    );
+  } catch (error) {
+    console.error(
+      new Error("Failed to authenticate with AniList", { cause: error }),
+    );
+    return c.json(ErrorResponse, { status: 500 });
+  }
+});
+
+export default app;

src/controllers/auth/index.ts

@@ -0,0 +1,10 @@
+import { OpenAPIHono } from "@hono/zod-openapi";
+
+const app = new OpenAPIHono();
+
+app.route(
+  "/anilist",
+  await import("./anilist").then((controller) => controller.default),
+);
+
+export default app;