import { beforeEach, describe, expect, it, vi } from "vitest";
import type { OpenClawConfig } from "../config/config.js";
import { createEmptyPluginRegistry } from "./registry.js";

type MockManifestRegistry = {
  plugins: Array<Record<string, unknown>>;
  diagnostics: unknown[];
};

function createEmptyMockManifestRegistry(): MockManifestRegistry {
  return { plugins: [], diagnostics: [] };
}

const mocks = vi.hoisted(() => ({
  resolveRuntimePluginRegistry: vi.fn<
    (params?: unknown) => ReturnType<typeof createEmptyPluginRegistry> | undefined
  >(() => undefined),
  loadPluginManifestRegistry: vi.fn<() => MockManifestRegistry>(() =>
    createEmptyMockManifestRegistry(),
  ),
  withBundledPluginAllowlistCompat: vi.fn(({ config }) => config),
  withBundledPluginEnablementCompat: vi.fn(({ config }) => config),
  withBundledPluginVitestCompat: vi.fn(({ config }) => config),
}));

vi.mock("./loader.js", () => ({
  resolveRuntimePluginRegistry: mocks.resolveRuntimePluginRegistry,
}));

vi.mock("./manifest-registry.js", () => ({
  loadPluginManifestRegistry: mocks.loadPluginManifestRegistry,
}));

vi.mock("./bundled-compat.js", () => ({
  withBundledPluginAllowlistCompat: mocks.withBundledPluginAllowlistCompat,
  withBundledPluginEnablementCompat: mocks.withBundledPluginEnablementCompat,
  withBundledPluginVitestCompat: mocks.withBundledPluginVitestCompat,
}));

let resolvePluginCapabilityProviders: typeof import("./capability-provider-runtime.js").resolvePluginCapabilityProviders;

function expectResolvedCapabilityProviderIds(providers: Array<{ id: string }>, expected: string[]) {
  expect(providers.map((provider) => provider.id)).toEqual(expected);
}

function expectNoResolvedCapabilityProviders(providers: Array<{ id: string }>) {
  expectResolvedCapabilityProviderIds(providers, []);
}

function expectBundledCompatLoadPath(params: {
  cfg: OpenClawConfig;
  allowlistCompat: { plugins: { allow: string[] } };
  enablementCompat: {
    plugins: {
      allow: string[];
      entries: { openai: { enabled: boolean } };
    };
  };
}) {
  expect(mocks.loadPluginManifestRegistry).toHaveBeenCalledWith({
    config: params.cfg,
    env: process.env,
  });
  expect(mocks.withBundledPluginAllowlistCompat).toHaveBeenCalledWith({
    config: params.cfg,
    pluginIds: ["openai"],
  });
  expect(mocks.withBundledPluginEnablementCompat).toHaveBeenCalledWith({
    config: params.allowlistCompat,
    pluginIds: ["openai"],
  });
  expect(mocks.withBundledPluginVitestCompat).toHaveBeenCalledWith({
    config: params.enablementCompat,
    pluginIds: ["openai"],
    env: process.env,
  });
  expect(mocks.resolveRuntimePluginRegistry).toHaveBeenCalledWith({
    config: params.enablementCompat,
  });
}

function createCompatChainConfig() {
  const cfg = { plugins: { allow: ["custom-plugin"] } } as OpenClawConfig;
  const allowlistCompat = { plugins: { allow: ["custom-plugin", "openai"] } };
  const enablementCompat = {
    plugins: {
      allow: ["custom-plugin", "openai"],
      entries: { openai: { enabled: true } },
    },
  };
  return { cfg, allowlistCompat, enablementCompat };
}

function setBundledCapabilityFixture(contractKey: string) {
  mocks.loadPluginManifestRegistry.mockReturnValue({
    plugins: [
      {
        id: "openai",
        origin: "bundled",
        contracts: { [contractKey]: ["openai"] },
      },
      {
        id: "custom-plugin",
        origin: "workspace",
        contracts: {},
      },
    ] as never,
    diagnostics: [],
  });
}

function expectCompatChainApplied(params: {
  key: "speechProviders" | "mediaUnderstandingProviders" | "imageGenerationProviders";
  contractKey: string;
  cfg: OpenClawConfig;
  allowlistCompat: { plugins: { allow: string[] } };
  enablementCompat: {
    plugins: {
      allow: string[];
      entries: { openai: { enabled: boolean } };
    };
  };
}) {
  setBundledCapabilityFixture(params.contractKey);
  mocks.withBundledPluginAllowlistCompat.mockReturnValue(params.allowlistCompat);
  mocks.withBundledPluginEnablementCompat.mockReturnValue(params.enablementCompat);
  mocks.withBundledPluginVitestCompat.mockReturnValue(params.enablementCompat);
  expectNoResolvedCapabilityProviders(
    resolvePluginCapabilityProviders({ key: params.key, cfg: params.cfg }),
  );
  expectBundledCompatLoadPath(params);
}

describe("resolvePluginCapabilityProviders", () => {
  beforeEach(async () => {
    vi.resetModules();
    mocks.resolveRuntimePluginRegistry.mockReset();
    mocks.resolveRuntimePluginRegistry.mockReturnValue(undefined);
    mocks.loadPluginManifestRegistry.mockReset();
    mocks.loadPluginManifestRegistry.mockReturnValue(createEmptyMockManifestRegistry());
    mocks.withBundledPluginAllowlistCompat.mockReset();
    mocks.withBundledPluginAllowlistCompat.mockImplementation(({ config }) => config);
    mocks.withBundledPluginEnablementCompat.mockReset();
    mocks.withBundledPluginEnablementCompat.mockImplementation(({ config }) => config);
    mocks.withBundledPluginVitestCompat.mockReset();
    mocks.withBundledPluginVitestCompat.mockImplementation(({ config }) => config);
    ({ resolvePluginCapabilityProviders } = await import("./capability-provider-runtime.js"));
  });

  it("uses the active registry when capability providers are already loaded", () => {
    const active = createEmptyPluginRegistry();
    active.speechProviders.push({
      pluginId: "openai",
      pluginName: "openai",
      source: "test",
      provider: {
        id: "openai",
        label: "openai",
        isConfigured: () => true,
        synthesize: async () => ({
          audioBuffer: Buffer.from("x"),
          outputFormat: "mp3",
          voiceCompatible: false,
          fileExtension: ".mp3",
        }),
      },
    } as never);
    mocks.resolveRuntimePluginRegistry.mockReturnValue(active);

    const providers = resolvePluginCapabilityProviders({ key: "speechProviders" });

    expectResolvedCapabilityProviderIds(providers, ["openai"]);
    expect(mocks.loadPluginManifestRegistry).not.toHaveBeenCalled();
    expect(mocks.resolveRuntimePluginRegistry).toHaveBeenCalledWith();
  });

  it("keeps active capability providers even when cfg is passed", () => {
    const active = createEmptyPluginRegistry();
    active.speechProviders.push({
      pluginId: "microsoft",
      pluginName: "microsoft",
      source: "test",
      provider: {
        id: "microsoft",
        label: "microsoft",
        aliases: ["edge"],
        isConfigured: () => true,
        synthesize: async () => ({
          audioBuffer: Buffer.from("x"),
          outputFormat: "mp3",
          voiceCompatible: false,
          fileExtension: ".mp3",
        }),
      },
    } as never);
    mocks.resolveRuntimePluginRegistry.mockImplementation((params?: unknown) =>
      params === undefined ? active : createEmptyPluginRegistry(),
    );

    const providers = resolvePluginCapabilityProviders({
      key: "speechProviders",
      cfg: { messages: { tts: { provider: "edge" } } } as OpenClawConfig,
    });

    expectResolvedCapabilityProviderIds(providers, ["microsoft"]);
    expect(mocks.resolveRuntimePluginRegistry).toHaveBeenCalledWith();
    expect(mocks.resolveRuntimePluginRegistry).not.toHaveBeenCalledWith({
      config: expect.anything(),
    });
  });

  it.each([
    ["speechProviders", "speechProviders"],
    ["mediaUnderstandingProviders", "mediaUnderstandingProviders"],
    ["imageGenerationProviders", "imageGenerationProviders"],
  ] as const)("applies bundled compat before fallback loading for %s", (key, contractKey) => {
    const { cfg, allowlistCompat, enablementCompat } = createCompatChainConfig();
    expectCompatChainApplied({
      key,
      contractKey,
      cfg,
      allowlistCompat,
      enablementCompat,
    });
  });

  it("reuses a compatible active registry even when the capability list is empty", () => {
    const active = createEmptyPluginRegistry();
    mocks.resolveRuntimePluginRegistry.mockReturnValue(active);

    const providers = resolvePluginCapabilityProviders({
      key: "mediaUnderstandingProviders",
      cfg: {} as OpenClawConfig,
    });

    expectNoResolvedCapabilityProviders(providers);
    expect(mocks.resolveRuntimePluginRegistry).toHaveBeenCalledWith({
      config: expect.anything(),
    });
  });
});