import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
import type { ChannelPluginCatalogEntry } from "../channels/plugins/catalog.js";
import type { ChannelPlugin } from "../channels/plugins/types.plugin.js";
import { resetPluginRuntimeStateForTest, setActivePluginRegistry } from "../plugins/runtime.js";
import { createTestRegistry } from "../test-utils/channel-plugins.js";
import {
  ensureChannelSetupPluginInstalled,
  loadChannelSetupPluginRegistrySnapshotForChannel,
} from "./channel-setup/plugin-install.js";
import { configMocks } from "./channels.mock-harness.js";
import {
  createExternalChatCatalogEntry,
  createExternalChatDeletePlugin,
} from "./channels.plugin-install.test-helpers.js";
import { baseConfigSnapshot, createTestRuntime } from "./test-runtime-config-helpers.js";

let channelsRemoveCommand: typeof import("./channels.js").channelsRemoveCommand;

const catalogMocks = vi.hoisted(() => ({
  listChannelPluginCatalogEntries: vi.fn((): ChannelPluginCatalogEntry[] => []),
}));

const registryRefreshMocks = vi.hoisted(() => ({
  refreshPluginRegistryAfterConfigMutation: vi.fn(async () => undefined),
}));

const gatewayMocks = vi.hoisted(() => ({
  callGateway: vi.fn(async () => ({ stopped: true })),
}));

vi.mock("../channels/plugins/catalog.js", async () => {
  const actual = await vi.importActual<typeof import("../channels/plugins/catalog.js")>(
    "../channels/plugins/catalog.js",
  );
  return {
    ...actual,
    listChannelPluginCatalogEntries: catalogMocks.listChannelPluginCatalogEntries,
  };
});

vi.mock("../channels/plugins/bundled.js", async () => {
  const actual = await vi.importActual<typeof import("../channels/plugins/bundled.js")>(
    "../channels/plugins/bundled.js",
  );
  return {
    ...actual,
    getBundledChannelPlugin: vi.fn(() => undefined),
  };
});

vi.mock("./channel-setup/plugin-install.js", async () => {
  const actual = await vi.importActual<typeof import("./channel-setup/plugin-install.js")>(
    "./channel-setup/plugin-install.js",
  );
  const { createMockChannelSetupPluginInstallModule } =
    await import("./channels.plugin-install.test-helpers.js");
  return createMockChannelSetupPluginInstallModule(actual);
});

vi.mock("../cli/plugins-registry-refresh.js", () => registryRefreshMocks);

vi.mock("../gateway/call.js", () => ({
  callGateway: gatewayMocks.callGateway,
}));

const runtime = createTestRuntime();

function firstWrittenChannelsConfig() {
  return configMocks.writeConfigFile.mock.calls[0]?.[0] as
    | { channels?: Record<string, unknown> }
    | undefined;
}

describe("channelsRemoveCommand", () => {
  beforeAll(async () => {
    ({ channelsRemoveCommand } = await import("./channels.js"));
  });

  beforeEach(() => {
    resetPluginRuntimeStateForTest();
    configMocks.readConfigFileSnapshot.mockClear();
    configMocks.writeConfigFile.mockClear();
    configMocks.replaceConfigFile
      .mockReset()
      .mockImplementation(async (params: { nextConfig: unknown }) => {
        await configMocks.writeConfigFile(params.nextConfig);
      });
    runtime.log.mockClear();
    runtime.error.mockClear();
    runtime.exit.mockClear();
    catalogMocks.listChannelPluginCatalogEntries.mockClear();
    catalogMocks.listChannelPluginCatalogEntries.mockReturnValue([]);
    vi.mocked(ensureChannelSetupPluginInstalled).mockClear();
    vi.mocked(ensureChannelSetupPluginInstalled).mockImplementation(async ({ cfg }) => ({
      cfg,
      installed: true,
      status: "installed",
    }));
    vi.mocked(loadChannelSetupPluginRegistrySnapshotForChannel).mockClear();
    vi.mocked(loadChannelSetupPluginRegistrySnapshotForChannel).mockReturnValue(
      createTestRegistry(),
    );
    registryRefreshMocks.refreshPluginRegistryAfterConfigMutation.mockClear();
    gatewayMocks.callGateway.mockClear();
    gatewayMocks.callGateway.mockResolvedValue({ stopped: true });
    setActivePluginRegistry(createTestRegistry());
  });

  it("asks users to add an external channel plugin before removing its account", async () => {
    configMocks.readConfigFileSnapshot.mockResolvedValue({
      ...baseConfigSnapshot,
      config: {
        channels: {
          "external-chat": {
            enabled: true,
            token: "token-1",
          },
        },
      },
    });
    const catalogEntry: ChannelPluginCatalogEntry = createExternalChatCatalogEntry();
    catalogMocks.listChannelPluginCatalogEntries.mockReturnValue([catalogEntry]);

    await channelsRemoveCommand(
      {
        channel: "external-chat",
        account: "default",
        delete: true,
      },
      runtime,
      { hasFlags: true },
    );

    expect(ensureChannelSetupPluginInstalled).not.toHaveBeenCalled();
    expect(loadChannelSetupPluginRegistrySnapshotForChannel).toHaveBeenCalledTimes(1);
    expect(configMocks.writeConfigFile).not.toHaveBeenCalled();
    expect(runtime.error).toHaveBeenCalledWith(
      'Channel plugin "external-chat" is not installed. Run openclaw channels add --channel external-chat first.',
    );
    expect(runtime.exit).toHaveBeenCalledWith(1);
  });

  it("removes an external channel account when its plugin is already installed", async () => {
    configMocks.readConfigFileSnapshot.mockResolvedValue({
      ...baseConfigSnapshot,
      config: {
        channels: {
          "external-chat": {
            enabled: true,
            token: "token-1",
          },
        },
      },
    });
    const catalogEntry: ChannelPluginCatalogEntry = createExternalChatCatalogEntry();
    catalogMocks.listChannelPluginCatalogEntries.mockReturnValue([catalogEntry]);
    const scopedPlugin = createExternalChatDeletePlugin();
    vi.mocked(loadChannelSetupPluginRegistrySnapshotForChannel).mockReturnValue(
      createTestRegistry([
        {
          pluginId: "@vendor/external-chat-plugin",
          plugin: scopedPlugin,
          source: "test",
        },
      ]),
    );

    await channelsRemoveCommand(
      {
        channel: "external-chat",
        account: "default",
        delete: true,
      },
      runtime,
      { hasFlags: true },
    );

    expect(ensureChannelSetupPluginInstalled).not.toHaveBeenCalled();
    expect(registryRefreshMocks.refreshPluginRegistryAfterConfigMutation).not.toHaveBeenCalled();
    const writtenConfig = firstWrittenChannelsConfig();
    expect(writtenConfig?.channels?.["external-chat"]).toBeUndefined();
    expect(runtime.error).not.toHaveBeenCalled();
    expect(runtime.exit).not.toHaveBeenCalled();
  });

  it("stops an active gateway channel runtime before deleting a runtime-backed account", async () => {
    configMocks.readConfigFileSnapshot.mockResolvedValue({
      ...baseConfigSnapshot,
      config: {
        channels: {
          "external-chat": {
            enabled: true,
            token: "token-1",
          },
        },
      },
    });
    const catalogEntry: ChannelPluginCatalogEntry = createExternalChatCatalogEntry();
    catalogMocks.listChannelPluginCatalogEntries.mockReturnValue([catalogEntry]);
    const scopedPlugin = {
      ...createExternalChatDeletePlugin(),
      gateway: {
        startAccount: vi.fn(),
      },
    } as ChannelPlugin;
    vi.mocked(loadChannelSetupPluginRegistrySnapshotForChannel).mockReturnValue(
      createTestRegistry([
        {
          pluginId: "@vendor/external-chat-plugin",
          plugin: scopedPlugin,
          source: "test",
        },
      ]),
    );

    await channelsRemoveCommand(
      {
        channel: "external-chat",
        account: "default",
        delete: true,
      },
      runtime,
      { hasFlags: true },
    );

    expect(gatewayMocks.callGateway).toHaveBeenCalledWith({
      config: {
        channels: {
          "external-chat": {
            enabled: true,
            token: "token-1",
          },
        },
      },
      method: "channels.stop",
      params: {
        channel: "external-chat",
        accountId: "default",
      },
      mode: "backend",
      clientName: "gateway-client",
      deviceIdentity: null,
    });
    const writtenConfig = firstWrittenChannelsConfig();
    expect(writtenConfig?.channels?.["external-chat"]).toBeUndefined();
  });
});
