Add MineGeo gameplay systems and interface

lib/discord-delivery.ts

@@ -0,0 +1,67 @@
+import {
+  announcementMessage,
+  DiscordClient,
+  DiscordDeliveryError,
+} from "./discord-client";
+import type { DiscordAnnouncement } from "../shared/discord";
+type Source = Parameters<typeof announcementMessage>[3];
+export async function deliverDiscordAnnouncement(
+  job: DiscordAnnouncement,
+  dependencies: {
+    origin: string;
+    channel: string;
+    client: Pick<DiscordClient, "send">;
+    load: () => Promise<Source | null>;
+    finish: (patch: Partial<DiscordAnnouncement>) => Promise<void>;
+    now?: () => number;
+  },
+) {
+  const {
+    origin,
+    channel,
+    client,
+    load,
+    finish,
+    now = Date.now,
+  } = dependencies;
+  const released = { lease_owner: null, lease_until: null };
+  try {
+    const source = await load();
+    if (!source) {
+      await finish({ ...released, state: "skipped", last_error: null });
+      return;
+    }
+    const messageId = await client.send(
+      channel,
+      announcementMessage(job.id, job.kind, origin, source),
+    );
+    await finish({
+      ...released,
+      state: "sent",
+      channel_id: channel,
+      message_id: messageId,
+      sent_at: new Date(now()).toISOString(),
+      last_error: null,
+    });
+  } catch (failure) {
+    const error =
+      failure instanceof DiscordDeliveryError
+        ? failure
+        : new DiscordDeliveryError(
+            "Discord delivery could not be confirmed. Delivery will retry.",
+          );
+    await finish({
+      ...released,
+      state: error.permanent || job.attempts >= 8 ? "failed" : "pending",
+      last_error: error.message,
+      next_attempt_at: new Date(
+        now() +
+          Math.max(
+            error.retryAfter,
+            Math.min(3600, 30 * 2 ** (job.attempts - 1)),
+          ) *
+            1000,
+      ).toISOString(),
+    });
+  }
+}