import { beforeEach, describe, expect, it, vi } from "vitest";
import type { OpenClawConfig } from "../config/config.js";
import type { SessionBindingRecord } from "../infra/outbound/session-binding-service.js";

const hoisted = vi.hoisted(() => {
  const callGatewayMock = vi.fn();
  const sessionBindingCapabilitiesMock = vi.fn();
  const sessionBindingBindMock = vi.fn();
  const sessionBindingUnbindMock = vi.fn();
  const sessionBindingResolveByConversationMock = vi.fn();
  const sessionBindingListBySessionMock = vi.fn();
  const closeSessionMock = vi.fn();
  const initializeSessionMock = vi.fn();
  const state = {
    cfg: {
      acp: {
        enabled: true,
        backend: "acpx",
        allowedAgents: ["codex"],
      },
      session: {
        mainKey: "main",
        scope: "per-sender",
      },
      channels: {
        discord: {
          threadBindings: {
            enabled: true,
            spawnAcpSessions: true,
          },
        },
      },
    } as OpenClawConfig,
  };
  return {
    callGatewayMock,
    sessionBindingCapabilitiesMock,
    sessionBindingBindMock,
    sessionBindingUnbindMock,
    sessionBindingResolveByConversationMock,
    sessionBindingListBySessionMock,
    closeSessionMock,
    initializeSessionMock,
    state,
  };
});

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

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

vi.mock("../acp/control-plane/manager.js", () => {
  return {
    getAcpSessionManager: () => ({
      initializeSession: (params: unknown) => hoisted.initializeSessionMock(params),
      closeSession: (params: unknown) => hoisted.closeSessionMock(params),
    }),
  };
});

vi.mock("../infra/outbound/session-binding-service.js", async (importOriginal) => {
  const actual =
    await importOriginal<typeof import("../infra/outbound/session-binding-service.js")>();
  return {
    ...actual,
    getSessionBindingService: () => ({
      bind: (input: unknown) => hoisted.sessionBindingBindMock(input),
      getCapabilities: (params: unknown) => hoisted.sessionBindingCapabilitiesMock(params),
      listBySession: (targetSessionKey: string) =>
        hoisted.sessionBindingListBySessionMock(targetSessionKey),
      resolveByConversation: (ref: unknown) => hoisted.sessionBindingResolveByConversationMock(ref),
      touch: vi.fn(),
      unbind: (input: unknown) => hoisted.sessionBindingUnbindMock(input),
    }),
  };
});

const { spawnAcpDirect } = await import("./acp-spawn.js");

function createSessionBinding(overrides?: Partial<SessionBindingRecord>): SessionBindingRecord {
  return {
    bindingId: "default:child-thread",
    targetSessionKey: "agent:codex:acp:s1",
    targetKind: "session",
    conversation: {
      channel: "discord",
      accountId: "default",
      conversationId: "child-thread",
      parentConversationId: "parent-channel",
    },
    status: "active",
    boundAt: Date.now(),
    metadata: {
      agentId: "codex",
      boundBy: "system",
    },
    ...overrides,
  };
}

describe("spawnAcpDirect", () => {
  beforeEach(() => {
    hoisted.state.cfg = {
      acp: {
        enabled: true,
        backend: "acpx",
        allowedAgents: ["codex"],
      },
      session: {
        mainKey: "main",
        scope: "per-sender",
      },
      channels: {
        discord: {
          threadBindings: {
            enabled: true,
            spawnAcpSessions: true,
          },
        },
      },
    } satisfies OpenClawConfig;

    hoisted.callGatewayMock.mockReset().mockImplementation(async (argsUnknown: unknown) => {
      const args = argsUnknown as { method?: string };
      if (args.method === "sessions.patch") {
        return { ok: true };
      }
      if (args.method === "agent") {
        return { runId: "run-1" };
      }
      if (args.method === "sessions.delete") {
        return { ok: true };
      }
      return {};
    });

    hoisted.closeSessionMock.mockReset().mockResolvedValue({
      runtimeClosed: true,
      metaCleared: false,
    });
    hoisted.initializeSessionMock.mockReset().mockImplementation(async (argsUnknown: unknown) => {
      const args = argsUnknown as {
        sessionKey: string;
        agent: string;
        mode: "persistent" | "oneshot";
        cwd?: string;
      };
      const runtimeSessionName = `${args.sessionKey}:runtime`;
      const cwd = typeof args.cwd === "string" ? args.cwd : undefined;
      return {
        runtime: {
          close: vi.fn().mockResolvedValue(undefined),
        },
        handle: {
          sessionKey: args.sessionKey,
          backend: "acpx",
          runtimeSessionName,
          ...(cwd ? { cwd } : {}),
          agentSessionId: "codex-inner-1",
          backendSessionId: "acpx-1",
        },
        meta: {
          backend: "acpx",
          agent: args.agent,
          runtimeSessionName,
          ...(cwd ? { runtimeOptions: { cwd }, cwd } : {}),
          identity: {
            state: "pending",
            source: "ensure",
            acpxSessionId: "acpx-1",
            agentSessionId: "codex-inner-1",
            lastUpdatedAt: Date.now(),
          },
          mode: args.mode,
          state: "idle",
          lastActivityAt: Date.now(),
        },
      };
    });

    hoisted.sessionBindingCapabilitiesMock.mockReset().mockReturnValue({
      adapterAvailable: true,
      bindSupported: true,
      unbindSupported: true,
      placements: ["current", "child"],
    });
    hoisted.sessionBindingBindMock
      .mockReset()
      .mockImplementation(
        async (input: {
          targetSessionKey: string;
          conversation: { accountId: string };
          metadata?: Record<string, unknown>;
        }) =>
          createSessionBinding({
            targetSessionKey: input.targetSessionKey,
            conversation: {
              channel: "discord",
              accountId: input.conversation.accountId,
              conversationId: "child-thread",
              parentConversationId: "parent-channel",
            },
            metadata: {
              boundBy:
                typeof input.metadata?.boundBy === "string" ? input.metadata.boundBy : "system",
              agentId: "codex",
              webhookId: "wh-1",
            },
          }),
      );
    hoisted.sessionBindingResolveByConversationMock.mockReset().mockReturnValue(null);
    hoisted.sessionBindingListBySessionMock.mockReset().mockReturnValue([]);
    hoisted.sessionBindingUnbindMock.mockReset().mockResolvedValue([]);
  });

  it("spawns ACP session, binds a new thread, and dispatches initial task", async () => {
    const result = await spawnAcpDirect(
      {
        task: "Investigate flaky tests",
        agentId: "codex",
        mode: "session",
        thread: true,
      },
      {
        agentSessionKey: "agent:main:main",
        agentChannel: "discord",
        agentAccountId: "default",
        agentTo: "channel:parent-channel",
        agentThreadId: "requester-thread",
      },
    );

    expect(result.status).toBe("accepted");
    expect(result.childSessionKey).toMatch(/^agent:codex:acp:/);
    expect(result.runId).toBe("run-1");
    expect(result.mode).toBe("session");
    expect(hoisted.sessionBindingBindMock).toHaveBeenCalledWith(
      expect.objectContaining({
        targetKind: "session",
        placement: "child",
      }),
    );
    expect(hoisted.sessionBindingBindMock).toHaveBeenCalledWith(
      expect.objectContaining({
        metadata: expect.objectContaining({
          introText: expect.not.stringContaining(
            "session ids: pending (available after the first reply)",
          ),
        }),
      }),
    );

    const agentCall = hoisted.callGatewayMock.mock.calls
      .map((call: unknown[]) => call[0] as { method?: string; params?: Record<string, unknown> })
      .find((request) => request.method === "agent");
    expect(agentCall?.params?.sessionKey).toMatch(/^agent:codex:acp:/);
    expect(agentCall?.params?.to).toBe("channel:child-thread");
    expect(agentCall?.params?.threadId).toBe("child-thread");
    expect(agentCall?.params?.deliver).toBe(true);
    expect(hoisted.initializeSessionMock).toHaveBeenCalledWith(
      expect.objectContaining({
        sessionKey: expect.stringMatching(/^agent:codex:acp:/),
        agent: "codex",
        mode: "persistent",
      }),
    );
  });

  it("includes cwd in ACP thread intro banner when provided at spawn time", async () => {
    const result = await spawnAcpDirect(
      {
        task: "Check workspace",
        agentId: "codex",
        cwd: "/home/bob/clawd",
        mode: "session",
        thread: true,
      },
      {
        agentSessionKey: "agent:main:main",
        agentChannel: "discord",
        agentAccountId: "default",
        agentTo: "channel:parent-channel",
      },
    );

    expect(result.status).toBe("accepted");
    expect(hoisted.sessionBindingBindMock).toHaveBeenCalledWith(
      expect.objectContaining({
        metadata: expect.objectContaining({
          introText: expect.stringContaining("cwd: /home/bob/clawd"),
        }),
      }),
    );
  });

  it("rejects disallowed ACP agents", async () => {
    hoisted.state.cfg = {
      ...hoisted.state.cfg,
      acp: {
        enabled: true,
        backend: "acpx",
        allowedAgents: ["claudecode"],
      },
    };

    const result = await spawnAcpDirect(
      {
        task: "hello",
        agentId: "codex",
      },
      {
        agentSessionKey: "agent:main:main",
      },
    );

    expect(result).toMatchObject({
      status: "forbidden",
    });
  });

  it("requires an explicit ACP agent when no config default exists", async () => {
    const result = await spawnAcpDirect(
      {
        task: "hello",
      },
      {
        agentSessionKey: "agent:main:main",
      },
    );

    expect(result.status).toBe("error");
    expect(result.error).toContain("set `acp.defaultAgent`");
  });

  it("fails fast when Discord ACP thread spawn is disabled", async () => {
    hoisted.state.cfg = {
      ...hoisted.state.cfg,
      channels: {
        discord: {
          threadBindings: {
            enabled: true,
            spawnAcpSessions: false,
          },
        },
      },
    };

    const result = await spawnAcpDirect(
      {
        task: "hello",
        agentId: "codex",
        thread: true,
        mode: "session",
      },
      {
        agentChannel: "discord",
        agentAccountId: "default",
        agentTo: "channel:parent-channel",
      },
    );

    expect(result.status).toBe("error");
    expect(result.error).toContain("spawnAcpSessions=true");
  });
});