import { spawnSync } from "node:child_process";
import {
  copyFileSync,
  mkdirSync,
  mkdtempSync,
  readFileSync,
  realpathSync,
  rmSync,
  writeFileSync,
} from "node:fs";
import { tmpdir } from "node:os";
import path from "node:path";
import { describe, expect, it } from "vitest";
import { detectChangedScope } from "../../scripts/ci-changed-scope.mjs";
import { isDirectRunPath } from "../../scripts/lib/direct-run.mjs";

const DIRECT_RUN_SCRIPTS = [
  "scripts/android-app-i18n.ts",
  "scripts/android-pin-version.ts",
  "scripts/ci-run-timings.mjs",
  "scripts/e2e/lib/package-compat.mjs",
  "scripts/generate-bundled-channel-config-metadata.ts",
  "scripts/plan-release-workflow-matrix.mjs",
  "scripts/run-additional-boundary-checks.mts",
  "scripts/verify-docker-attestations.mjs",
] as const;

const EXECUTABLE_ENTRYPOINTS = [
  {
    args: ["--direct-run-smoke"],
    output: "Unknown CI run timing option: --direct-run-smoke",
    script: "scripts/ci-run-timings.mjs",
    status: 1,
  },
  {
    args: ["2026.4.25"],
    output: "1",
    script: "scripts/e2e/lib/package-compat.mjs",
    status: 0,
  },
  {
    args: [],
    output: "docker_e2e_count=",
    script: "scripts/plan-release-workflow-matrix.mjs",
    status: 0,
  },
  {
    args: ["--help"],
    output: "Usage: node --import tsx scripts/run-additional-boundary-checks.mts",
    script: "scripts/run-additional-boundary-checks.mts",
    status: 0,
  },
  {
    args: ["--help"],
    output: "Usage: node scripts/verify-docker-attestations.mjs",
    script: "scripts/verify-docker-attestations.mjs",
    status: 0,
  },
] as const;

function runEntrypoint(entrypoint: (typeof EXECUTABLE_ENTRYPOINTS)[number]) {
  const script = path.resolve(entrypoint.script);
  const args = script.endsWith(".mts")
    ? ["--import", "tsx", script, ...entrypoint.args]
    : [script, ...entrypoint.args];
  return spawnSync(process.execPath, args, {
    cwd: process.cwd(),
    encoding: "utf8",
    env: {
      ...process.env,
      DOCKER_LANES: "",
      GITHUB_STEP_SUMMARY: "",
      INCLUDE_LIVE_SUITES: "",
      INCLUDE_RELEASE_PATH_SUITES: "",
      LIVE_MODEL_PROVIDERS: "",
      LIVE_SUITE_FILTER: "",
      RELEASE_TEST_PROFILE: "",
    },
    timeout: 30_000,
  });
}

const TSX_SHIM_WRAPPERS = [
  "scripts/run-vitest.mjs",
  "scripts/lib/plugin-npm-package-manifest.mjs",
  "scripts/e2e/kitchen-sink-rpc-walk.mjs",
  "scripts/perf/summarize-cpuprofile.mjs",
] as const;

type ModulesEnv = Partial<Record<"PNPM_CONFIG_MODULES_DIR" | "npm_config_modules_dir", string>>;

function writeTsxFixture(modulesDir: string, marker: string) {
  const packageDir = path.join(modulesDir, "tsx");
  mkdirSync(packageDir, { recursive: true });
  writeFileSync(
    path.join(packageDir, "package.json"),
    JSON.stringify({ name: "tsx", type: "module", exports: "./loader.mjs" }),
  );
  writeFileSync(
    path.join(packageDir, "loader.mjs"),
    `process.env.OPENCLAW_TSX_FIXTURE_LOADER = ${JSON.stringify(marker)};\n`,
  );
}

function runShimFixture(
  wrapper: (typeof TSX_SHIM_WRAPPERS)[number],
  configureModules: (paths: {
    checkoutRoot: string;
    fixtureRoot: string;
  }) => ModulesEnv = () => ({}),
) {
  const fixtureRoot = realpathSync(mkdtempSync(path.join(tmpdir(), "openclaw-tsx-cli-shim-")));
  const checkoutRoot = path.join(fixtureRoot, "checkout");
  const wrapperPath = path.join(checkoutRoot, wrapper);
  const implementationPath = wrapperPath.replace(/\.mjs$/u, ".mts");
  try {
    mkdirSync(path.dirname(wrapperPath), { recursive: true });
    mkdirSync(path.join(checkoutRoot, "scripts", "lib"), { recursive: true });
    copyFileSync(wrapper, wrapperPath);
    copyFileSync(
      "scripts/lib/tsx-cli-shim.mjs",
      path.join(checkoutRoot, "scripts", "lib", "tsx-cli-shim.mjs"),
    );
    writeFileSync(path.join(checkoutRoot, "pnpm-lock.yaml"), "lockfileVersion: '9.0'\n");
    writeFileSync(
      implementationPath,
      "process.stdout.write(JSON.stringify({ loader: process.env.OPENCLAW_TSX_FIXTURE_LOADER, args: process.argv.slice(2) }));\n",
    );
    writeTsxFixture(path.join(checkoutRoot, "node_modules"), "checkout");
    const modulesEnv = configureModules({ checkoutRoot, fixtureRoot });

    const env = { ...process.env };
    delete env.NODE_OPTIONS;
    delete env.NODE_PATH;
    delete env.PNPM_CONFIG_MODULES_DIR;
    delete env.npm_config_modules_dir;
    Object.assign(env, modulesEnv);
    return spawnSync(process.execPath, [wrapperPath, "--hydrated-proof"], {
      cwd: fixtureRoot,
      encoding: "utf8",
      env,
      timeout: 10_000,
    });
  } finally {
    rmSync(fixtureRoot, { recursive: true, force: true });
  }
}

function expectShimLoader(result: ReturnType<typeof runShimFixture>, loader: string) {
  expect(result.error).toBeUndefined();
  expect(result.status, result.stderr).toBe(0);
  expect(JSON.parse(result.stdout)).toEqual({ loader, args: ["--hydrated-proof"] });
}

describe("script direct-run entrypoints", () => {
  it.each(EXECUTABLE_ENTRYPOINTS)("runs $script through its guarded CLI", (entrypoint) => {
    const result = runEntrypoint(entrypoint);
    const output = `${result.stdout}${result.stderr}`;

    expect(result.error).toBeUndefined();
    expect(result.status).toBe(entrypoint.status);
    expect(output).toContain(entrypoint.output);
  });

  it.each([
    { envKey: "PNPM_CONFIG_MODULES_DIR", mode: "absolute", wrapper: TSX_SHIM_WRAPPERS[0] },
    { envKey: "npm_config_modules_dir", mode: "relative", wrapper: TSX_SHIM_WRAPPERS[1] },
    { envKey: "PNPM_CONFIG_MODULES_DIR", mode: "relative", wrapper: TSX_SHIM_WRAPPERS[2] },
    { envKey: "npm_config_modules_dir", mode: "absolute", wrapper: TSX_SHIM_WRAPPERS[3] },
  ] as const)("boots $wrapper from a $mode $envKey", ({ envKey, mode, wrapper }) => {
    const result = runShimFixture(wrapper, ({ checkoutRoot, fixtureRoot }) => {
      const modulesDir = path.join(fixtureRoot, "hydrated-modules");
      writeTsxFixture(modulesDir, "hydrated");
      const configuredDir =
        mode === "absolute" ? modulesDir : path.relative(checkoutRoot, modulesDir);
      return { [envKey]: configuredDir };
    });
    expectShimLoader(result, "hydrated");
  });

  it("prefers PNPM_CONFIG_MODULES_DIR over npm_config_modules_dir", () => {
    const result = runShimFixture(TSX_SHIM_WRAPPERS[2], ({ fixtureRoot }) => {
      const preferredDir = path.join(fixtureRoot, "preferred-modules");
      const fallbackDir = path.join(fixtureRoot, "fallback-modules");
      writeTsxFixture(preferredDir, "preferred");
      writeTsxFixture(fallbackDir, "lowercase");
      return {
        PNPM_CONFIG_MODULES_DIR: preferredDir,
        npm_config_modules_dir: fallbackDir,
      };
    });
    expectShimLoader(result, "preferred");
  });

  it("falls back to checkout dependencies without an external modules directory", () => {
    expectShimLoader(runShimFixture(TSX_SHIM_WRAPPERS[3]), "checkout");
  });

  it("matches Windows drive paths case-insensitively", () => {
    expect(
      isDirectRunPath(
        "C:\\repo\\scripts\\android-app-i18n.ts",
        "c:\\repo\\scripts\\android-app-i18n.ts",
        "win32",
      ),
    ).toBe(true);
  });

  it.each(DIRECT_RUN_SCRIPTS)("uses the canonical guard in %s", (script) => {
    const source = readFileSync(script, "utf8");

    expect(source.match(/isDirectRunUrl\(process\.argv\[1\], import\.meta\.url\)/gu)).toHaveLength(
      1,
    );
  });

  it.each([
    ...DIRECT_RUN_SCRIPTS,
    "scripts/lib/direct-run.mjs",
    "scripts/lib/tsx-cli-shim.mjs",
    "test/scripts/direct-run-entrypoints.test.ts",
  ])("routes %s through Windows CI", (changedPath) => {
    expect(detectChangedScope([changedPath]).runWindows).toBe(true);
  });
});