import { beforeEach, describe, expect, it, vi } from "vitest";

const callGatewayMock = vi.fn();
vi.mock("../gateway/call.js", () => ({
  callGateway: (opts: unknown) => callGatewayMock(opts),
}));

let configOverride: ReturnType<(typeof import("../config/config.js"))["loadConfig"]> = {
  session: {
    mainKey: "main",
    scope: "per-sender",
  },
};

vi.mock("../config/config.js", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../config/config.js")>();
  return {
    ...actual,
    loadConfig: () => configOverride,
    resolveGatewayPort: () => 18789,
  };
});

import { createClawdbotTools } from "./clawdbot-tools.js";
import { resetSubagentRegistryForTests } from "./subagent-registry.js";

describe("clawdbot-tools: subagents", () => {
  beforeEach(() => {
    configOverride = {
      session: {
        mainKey: "main",
        scope: "per-sender",
      },
    };
  });

  it("sessions_spawn announces via agent.wait when lifecycle events are missing", async () => {
    resetSubagentRegistryForTests();
    callGatewayMock.mockReset();
    const calls: Array<{ method?: string; params?: unknown }> = [];
    let agentCallCount = 0;
    let sendParams: { to?: string; channel?: string; message?: string } = {};
    let deletedKey: string | undefined;
    let childRunId: string | undefined;
    let childSessionKey: string | undefined;
    const waitCalls: Array<{ runId?: string; timeoutMs?: number }> = [];
    const sessionLastAssistantText = new Map<string, string>();

    callGatewayMock.mockImplementation(async (opts: unknown) => {
      const request = opts as { method?: string; params?: unknown };
      calls.push(request);
      if (request.method === "agent") {
        agentCallCount += 1;
        const runId = `run-${agentCallCount}`;
        const params = request.params as {
          message?: string;
          sessionKey?: string;
          channel?: string;
          timeout?: number;
        };
        const message = params?.message ?? "";
        const sessionKey = params?.sessionKey ?? "";
        if (message === "Sub-agent announce step.") {
          sessionLastAssistantText.set(sessionKey, "announce now");
        } else {
          childRunId = runId;
          childSessionKey = sessionKey;
          sessionLastAssistantText.set(sessionKey, "result");
          expect(params?.channel).toBe("discord");
          expect(params?.timeout).toBe(1);
        }
        return {
          runId,
          status: "accepted",
          acceptedAt: 2000 + agentCallCount,
        };
      }
      if (request.method === "agent.wait") {
        const params = request.params as { runId?: string; timeoutMs?: number } | undefined;
        waitCalls.push(params ?? {});
        return {
          runId: params?.runId ?? "run-1",
          status: "ok",
          startedAt: 3000,
          endedAt: 4000,
        };
      }
      if (request.method === "chat.history") {
        const params = request.params as { sessionKey?: string } | undefined;
        const text = sessionLastAssistantText.get(params?.sessionKey ?? "") ?? "";
        return {
          messages: [{ role: "assistant", content: [{ type: "text", text }] }],
        };
      }
      if (request.method === "send") {
        const params = request.params as
          | { to?: string; channel?: string; message?: string }
          | undefined;
        sendParams = {
          to: params?.to,
          channel: params?.channel,
          message: params?.message,
        };
        return { messageId: "m-announce" };
      }
      if (request.method === "sessions.delete") {
        const params = request.params as { key?: string } | undefined;
        deletedKey = params?.key;
        return { ok: true };
      }
      return {};
    });

    const tool = createClawdbotTools({
      agentSessionKey: "discord:group:req",
      agentChannel: "discord",
    }).find((candidate) => candidate.name === "sessions_spawn");
    if (!tool) throw new Error("missing sessions_spawn tool");

    const result = await tool.execute("call1b", {
      task: "do thing",
      runTimeoutSeconds: 1,
      cleanup: "delete",
    });
    expect(result.details).toMatchObject({
      status: "accepted",
      runId: "run-1",
    });

    await new Promise((resolve) => setTimeout(resolve, 0));
    await new Promise((resolve) => setTimeout(resolve, 0));
    await new Promise((resolve) => setTimeout(resolve, 0));

    const childWait = waitCalls.find((call) => call.runId === childRunId);
    expect(childWait?.timeoutMs).toBe(1000);
    expect(childSessionKey?.startsWith("agent:main:subagent:")).toBe(true);

    const agentCalls = calls.filter((call) => call.method === "agent");
    expect(agentCalls).toHaveLength(2);
    const second = agentCalls[1]?.params as
      | { channel?: string; deliver?: boolean; lane?: string }
      | undefined;
    expect(second?.lane).toBe("nested");
    expect(second?.deliver).toBe(false);
    expect(second?.channel).toBe("webchat");

    expect(sendParams.channel).toBe("discord");
    expect(sendParams.to).toBe("channel:req");
    expect(sendParams.message ?? "").toContain("announce now");
    expect(sendParams.message ?? "").toContain("Stats:");
    expect(deletedKey?.startsWith("agent:main:subagent:")).toBe(true);
  });
});