const test = require("node:test");
const assert = require("node:assert/strict");
const fs = require("node:fs");
const path = require("node:path");

const projectRoot = path.resolve(__dirname, "..");

function read(relativePath) {
  return fs.readFileSync(path.join(projectRoot, relativePath), "utf8");
}

function compareVersions(left, right) {
  const leftParts = left.split(".").map(Number);
  const rightParts = right.split(".").map(Number);
  const length = Math.max(leftParts.length, rightParts.length);

  for (let index = 0; index < length; index += 1) {
    const leftValue = leftParts[index] ?? 0;
    const rightValue = rightParts[index] ?? 0;

    if (leftValue !== rightValue) {
      return leftValue - rightValue;
    }
  }

  return 0;
}

test("package.json exposes the security audit script and excludes removed cloud dependencies", () => {
  const packageJson = JSON.parse(read("package.json"));

  assert.equal(
    packageJson.scripts["security:audit"],
    "node ./scripts/security-audit-report.cjs",
  );
  assert.match(
    packageJson.scripts["test:ci"],
    /tests\/security-governance\.test\.cjs/,
  );
  assert.ok(!("@google-cloud/translate" in packageJson.dependencies));
  assert.ok(!("express" in packageJson.dependencies));
  assert.ok(!("firebase-admin" in packageJson.dependencies));
  assert.ok(!("firebase-functions" in packageJson.dependencies));
  assert.ok(!("firebase-functions-test" in packageJson.devDependencies));
  assert.ok(!("openai" in packageJson.dependencies));
  assert.ok(!("replicate" in packageJson.devDependencies));
});

test("security governance workflow enforces npm audit policy and uploads reports", () => {
  const workflow = read(".github/workflows/security-governance.yml");

  assert.match(workflow, /name:\s+Security Governance/);
  assert.match(workflow, /run:\s+npm run security:audit/);
  assert.match(workflow, /actions\/upload-artifact@v\d+/);
  assert.match(workflow, /cron:\s+["']31 17 \* \* 1["']/);
});

test("security baseline file is present and ready for future exceptions", () => {
  const baseline = JSON.parse(read("security/npm-audit-baseline.json"));

  assert.ok(Array.isArray(baseline.entries));
  assert.equal(baseline.entries.length, 0);
});

test("lodash is declared directly and lockfile avoids the vulnerable 4.17.23 release", () => {
  const packageJson = JSON.parse(read("package.json"));
  const packageLock = read("package-lock.json");

  assert.equal(packageJson.dependencies.lodash, "^4.18.1");
  assert.doesNotMatch(
    packageLock,
    /"node_modules\/lodash":\s*\{[\s\S]*?"version":\s*"4\.17\.23"/,
  );
});

test("security-sensitive dependency floors stay above blocked axios and basic-ftp releases", () => {
  const packageJson = JSON.parse(read("package.json"));
  const packageLock = JSON.parse(read("package-lock.json"));
  const axiosRange = packageJson.dependencies.axios.replace(/^[^\d]*/, "");
  const lockedAxiosVersion = packageLock.packages["node_modules/axios"].version;
  const lockedBasicFtpVersion =
    packageLock.packages["node_modules/basic-ftp"].version;

  assert.ok(
    compareVersions(axiosRange, "1.15.0") >= 0,
    `Expected axios floor >= 1.15.0, received ${packageJson.dependencies.axios}`,
  );
  assert.doesNotMatch(
    lockedAxiosVersion,
    /^1\.14\.0$/,
  );
  assert.ok(
    compareVersions(lockedBasicFtpVersion, "5.2.2") >= 0,
    `Expected basic-ftp lock >= 5.2.2, received ${lockedBasicFtpVersion}`,
  );
});