fix(discord): support forum channel thread-create (#10062)

* fix(discord): support forum channel thread-create

* fix: harden discord forum thread-create (#10062) (thanks @jarvis89757)

---------

Co-authored-by: Shakker <shakkerdroid@gmail.com>

src/channels/plugins/actions/discord/handle-action.test.ts

@@ -0,0 +1,35 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { handleDiscordMessageAction } from "./handle-action.js";
+
+const handleDiscordAction = vi.fn(async () => ({ details: { ok: true } }));
+
+vi.mock("../../../../agents/tools/discord-actions.js", () => ({
+  handleDiscordAction: (...args: unknown[]) => handleDiscordAction(...args),
+}));
+
+describe("handleDiscordMessageAction", () => {
+  beforeEach(() => {
+    handleDiscordAction.mockClear();
+  });
+
+  it("forwards thread-create message as content", async () => {
+    await handleDiscordMessageAction({
+      action: "thread-create",
+      params: {
+        to: "channel:123456789",
+        threadName: "Forum thread",
+        message: "Initial forum post body",
+      },
+      cfg: {},
+    });
+    expect(handleDiscordAction).toHaveBeenCalledWith(
+      expect.objectContaining({
+        action: "threadCreate",
+        channelId: "123456789",
+        name: "Forum thread",
+        content: "Initial forum post body",
+      }),
+      expect.any(Object),
+    );
+  });
+});

src/channels/plugins/actions/discord/handle-action.ts

@@ -184,6 +184,7 @@ export async function handleDiscordMessageAction(
   if (action === "thread-create") {
     const name = readStringParam(params, "threadName", { required: true });
     const messageId = readStringParam(params, "messageId");
+    const content = readStringParam(params, "message");
     const autoArchiveMinutes = readNumberParam(params, "autoArchiveMin", {
       integer: true,
     });
@@ -194,6 +195,7 @@ export async function handleDiscordMessageAction(
         channelId: resolveChannelId(),
         name,
         messageId,
+        content,
         autoArchiveMinutes,
       },
       cfg,