refactor: move non-public routes to internal subfolder

"non-public" in this case means only used for event handling (and not supposed to be called by clients)

src/controllers/internal/upcoming-titles/index.ts

@@ -0,0 +1,69 @@
+import { Hono } from "hono";
+import { env } from "hono/adapter";
+import mapKeys from "lodash.mapkeys";
+import { DateTime } from "luxon";
+
+import { Case, changeStringCase } from "~/libs/changeStringCase";
+import type { AdminSdkCredentials } from "~/libs/fcm/getGoogleAuthToken";
+import { sendFcmMessage } from "~/libs/fcm/sendFcmMessage";
+import { verifyQstashHeader } from "~/libs/qstash/verifyQstashHeader";
+import { readEnvVariable } from "~/libs/readEnvVariable";
+import type { Env } from "~/types/env";
+import { ErrorResponse, SuccessResponse } from "~/types/schema";
+
+import { getUpcomingTitlesFromAnilist } from "./anilist";
+
+const app = new Hono();
+
+app.post("/", async (c) => {
+  if (!(await verifyQstashHeader(env<Env, typeof c>(c, "workerd"), c.req))) {
+    return c.json(ErrorResponse, { status: 401 });
+  }
+
+  const titles = await getUpcomingTitlesFromAnilist(
+    env<Env, typeof c>(c, "workerd"),
+  );
+
+  await Promise.all(
+    titles.map(async (title) => {
+      const titleName =
+        title.media.title?.userPreferred ??
+        title.media.title?.english ??
+        "Unknown Title";
+
+      return sendFcmMessage(
+        mapKeys(
+          readEnvVariable<AdminSdkCredentials>(c.env, "ADMIN_SDK_JSON"),
+          (_, key) => changeStringCase(key, Case.snake_case, Case.camelCase),
+        ) as unknown as AdminSdkCredentials,
+        {
+          topic: "newTitles",
+          data: {
+            type: "new_title",
+            aniListId: title.media.id.toString(),
+            title: titleName,
+            airingAt: title.airingAt.toString(),
+          },
+          notification: {
+            title: "New Series Alert",
+            body: `${titleName} will be released ${DateTime.fromSeconds(title.airingAt).toRelative({ unit: ["hours", "minutes"] })}`,
+            image:
+              title.media.coverImage?.medium ??
+              title.media.coverImage?.large ??
+              title.media.coverImage?.extraLarge ??
+              undefined,
+          },
+          android: {
+            notification: {
+              click_action: "HANDLE_FCM_NOTIFICATION",
+            },
+          },
+        },
+      );
+    }),
+  );
+
+  return c.json(SuccessResponse, 200);
+});
+
+export default app;