import * as fs from "fs";
import * as os from "os";
import path from "path";

import * as core from "@actions/core";
import * as github from "@actions/github";
import test from "ava";
import * as sinon from "sinon";

import * as api from "./api-client";
import { Config } from "./config-utils";
import { Feature } from "./feature-flags";
import { getRunnerLogger } from "./logging";
import { parseRepositoryNwo } from "./repository";
import {
  createFeatures,
  mockLanguagesInRepo,
  setupTests,
} from "./testing-utils";
import * as util from "./util";

setupTests(test);

test("getToolNames", (t) => {
  const input = fs.readFileSync(
    `${__dirname}/../src/testdata/tool-names.sarif`,
    "utf8"
  );
  const toolNames = util.getToolNames(JSON.parse(input));
  t.deepEqual(toolNames, ["CodeQL command-line toolchain", "ESLint"]);
});

test("getMemoryFlag() should return the correct --ram flag", (t) => {
  const totalMem = Math.floor(os.totalmem() / (1024 * 1024));
  const expectedThreshold = process.platform === "win32" ? 1536 : 1024;

  const tests: Array<[string | undefined, string]> = [
    [undefined, `--ram=${totalMem - expectedThreshold}`],
    ["", `--ram=${totalMem - expectedThreshold}`],
    ["512", "--ram=512"],
  ];

  for (const [input, expectedFlag] of tests) {
    const flag = util.getMemoryFlag(input);
    t.deepEqual(flag, expectedFlag);
  }
});

test("getMemoryFlag() throws if the ram input is < 0 or NaN", (t) => {
  for (const input of ["-1", "hello!"]) {
    t.throws(() => util.getMemoryFlag(input));
  }
});

test("getAddSnippetsFlag() should return the correct flag", (t) => {
  t.deepEqual(util.getAddSnippetsFlag(true), "--sarif-add-snippets");
  t.deepEqual(util.getAddSnippetsFlag("true"), "--sarif-add-snippets");

  t.deepEqual(util.getAddSnippetsFlag(false), "--no-sarif-add-snippets");
  t.deepEqual(util.getAddSnippetsFlag(undefined), "--no-sarif-add-snippets");
  t.deepEqual(util.getAddSnippetsFlag("false"), "--no-sarif-add-snippets");
  t.deepEqual(util.getAddSnippetsFlag("foo bar"), "--no-sarif-add-snippets");
});

test("getThreadsFlag() should return the correct --threads flag", (t) => {
  const numCpus = os.cpus().length;

  const tests: Array<[string | undefined, string]> = [
    ["0", "--threads=0"],
    ["1", "--threads=1"],
    [undefined, `--threads=${numCpus}`],
    ["", `--threads=${numCpus}`],
    [`${numCpus + 1}`, `--threads=${numCpus}`],
    [`${-numCpus - 1}`, `--threads=${-numCpus}`],
  ];

  for (const [input, expectedFlag] of tests) {
    const flag = util.getThreadsFlag(input, getRunnerLogger(true));
    t.deepEqual(flag, expectedFlag);
  }
});

test("getThreadsFlag() throws if the threads input is not an integer", (t) => {
  t.throws(() => util.getThreadsFlag("hello!", getRunnerLogger(true)));
});

test("getExtraOptionsEnvParam() succeeds on valid JSON with invalid options (for now)", (t) => {
  const origExtraOptions = process.env.CODEQL_ACTION_EXTRA_OPTIONS;

  const options = { foo: 42 };

  process.env.CODEQL_ACTION_EXTRA_OPTIONS = JSON.stringify(options);

  t.deepEqual(util.getExtraOptionsEnvParam(), <any>options);

  process.env.CODEQL_ACTION_EXTRA_OPTIONS = origExtraOptions;
});

test("getExtraOptionsEnvParam() succeeds on valid options", (t) => {
  const origExtraOptions = process.env.CODEQL_ACTION_EXTRA_OPTIONS;

  const options = { database: { init: ["--debug"] } };
  process.env.CODEQL_ACTION_EXTRA_OPTIONS = JSON.stringify(options);

  t.deepEqual(util.getExtraOptionsEnvParam(), options);

  process.env.CODEQL_ACTION_EXTRA_OPTIONS = origExtraOptions;
});

test("getExtraOptionsEnvParam() fails on invalid JSON", (t) => {
  const origExtraOptions = process.env.CODEQL_ACTION_EXTRA_OPTIONS;

  process.env.CODEQL_ACTION_EXTRA_OPTIONS = "{{invalid-json}}";
  t.throws(util.getExtraOptionsEnvParam);

  process.env.CODEQL_ACTION_EXTRA_OPTIONS = origExtraOptions;
});

test("parseGitHubUrl", (t) => {
  t.deepEqual(util.parseGitHubUrl("github.com"), "https://github.com");
  t.deepEqual(util.parseGitHubUrl("https://github.com"), "https://github.com");
  t.deepEqual(
    util.parseGitHubUrl("https://api.github.com"),
    "https://github.com"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.com/foo/bar"),
    "https://github.com"
  );

  t.deepEqual(
    util.parseGitHubUrl("github.example.com"),
    "https://github.example.com/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com"),
    "https://github.example.com/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://api.github.example.com"),
    "https://github.example.com/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com/api/v3"),
    "https://github.example.com/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com:1234"),
    "https://github.example.com:1234/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://api.github.example.com:1234"),
    "https://github.example.com:1234/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com:1234/api/v3"),
    "https://github.example.com:1234/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com/base/path"),
    "https://github.example.com/base/path/"
  );
  t.deepEqual(
    util.parseGitHubUrl("https://github.example.com/base/path/api/v3"),
    "https://github.example.com/base/path/"
  );

  t.throws(() => util.parseGitHubUrl(""), {
    message: '"" is not a valid URL',
  });
  t.throws(() => util.parseGitHubUrl("ssh://github.com"), {
    message: '"ssh://github.com" is not a http or https URL',
  });
  t.throws(() => util.parseGitHubUrl("http:///::::433"), {
    message: '"http:///::::433" is not a valid URL',
  });
});

test("allowed API versions", async (t) => {
  t.is(util.apiVersionInRange("1.33.0", "1.33", "2.0"), undefined);
  t.is(util.apiVersionInRange("1.33.1", "1.33", "2.0"), undefined);
  t.is(util.apiVersionInRange("1.34.0", "1.33", "2.0"), undefined);
  t.is(util.apiVersionInRange("2.0.0", "1.33", "2.0"), undefined);
  t.is(util.apiVersionInRange("2.0.1", "1.33", "2.0"), undefined);
  t.is(
    util.apiVersionInRange("1.32.0", "1.33", "2.0"),
    util.DisallowedAPIVersionReason.ACTION_TOO_NEW
  );
  t.is(
    util.apiVersionInRange("2.1.0", "1.33", "2.0"),
    util.DisallowedAPIVersionReason.ACTION_TOO_OLD
  );
});

function mockGetMetaVersionHeader(
  versionHeader: string | undefined
): sinon.SinonStub<any, any> {
  // Passing an auth token is required, so we just use a dummy value
  const client = github.getOctokit("123");
  const response = {
    headers: {
      "x-github-enterprise-version": versionHeader,
    },
  };
  const spyGetContents = sinon
    .stub(client.meta, "get")
    .resolves(response as any);
  sinon.stub(api, "getApiClient").value(() => client);
  return spyGetContents;
}

test("getGitHubVersion", async (t) => {
  const v = await util.getGitHubVersion({
    auth: "",
    url: "https://github.com",
    apiURL: undefined,
  });
  t.deepEqual(util.GitHubVariant.DOTCOM, v.type);

  mockGetMetaVersionHeader("2.0");
  const v2 = await util.getGitHubVersion({
    auth: "",
    url: "https://ghe.example.com",
    apiURL: undefined,
  });
  t.deepEqual(
    { type: util.GitHubVariant.GHES, version: "2.0" } as util.GitHubVersion,
    v2
  );

  mockGetMetaVersionHeader("GitHub AE");
  const ghae = await util.getGitHubVersion({
    auth: "",
    url: "https://example.githubenterprise.com",
    apiURL: undefined,
  });
  t.deepEqual({ type: util.GitHubVariant.GHAE }, ghae);

  mockGetMetaVersionHeader(undefined);
  const v3 = await util.getGitHubVersion({
    auth: "",
    url: "https://ghe.example.com",
    apiURL: undefined,
  });
  t.deepEqual({ type: util.GitHubVariant.DOTCOM }, v3);
});

const ML_POWERED_JS_STATUS_TESTS: Array<[string[], string]> = [
  // If no packs are loaded, status is false.
  [[], "false"],
  // If another pack is loaded but not the ML-powered query pack, status is false.
  [["some-other/pack"], "false"],
  // If the ML-powered query pack is loaded with a specific version, status is that version.
  [[`${util.ML_POWERED_JS_QUERIES_PACK_NAME}@~0.1.0`], "~0.1.0"],
  // If the ML-powered query pack is loaded with a specific version and another pack is loaded, the
  // status is the version of the ML-powered query pack.
  [
    ["some-other/pack", `${util.ML_POWERED_JS_QUERIES_PACK_NAME}@~0.1.0`],
    "~0.1.0",
  ],
  // If the ML-powered query pack is loaded without a version, the status is "latest".
  [[util.ML_POWERED_JS_QUERIES_PACK_NAME], "latest"],
  // If the ML-powered query pack is loaded with two different versions, the status is "other".
  [
    [
      `${util.ML_POWERED_JS_QUERIES_PACK_NAME}@~0.0.1`,
      `${util.ML_POWERED_JS_QUERIES_PACK_NAME}@~0.0.2`,
    ],
    "other",
  ],
  // If the ML-powered query pack is loaded with no specific version, and another pack is loaded,
  // the status is "latest".
  [["some-other/pack", util.ML_POWERED_JS_QUERIES_PACK_NAME], "latest"],
];

for (const [packs, expectedStatus] of ML_POWERED_JS_STATUS_TESTS) {
  const packDescriptions = `[${packs
    .map((pack) => JSON.stringify(pack))
    .join(", ")}]`;
  test(`ML-powered JS queries status report is "${expectedStatus}" for packs = ${packDescriptions}`, (t) => {
    return util.withTmpDir(async (tmpDir) => {
      const config: Config = {
        languages: [],
        queries: {},
        paths: [],
        pathsIgnore: [],
        originalUserInput: {},
        tempDir: tmpDir,
        codeQLCmd: "",
        gitHubVersion: {
          type: util.GitHubVariant.DOTCOM,
        } as util.GitHubVersion,
        dbLocation: "",
        packs: {
          javascript: packs,
        },
        debugMode: false,
        debugArtifactName: util.DEFAULT_DEBUG_ARTIFACT_NAME,
        debugDatabaseName: util.DEFAULT_DEBUG_DATABASE_NAME,
        augmentationProperties: {
          injectedMlQueries: false,
          packsInputCombines: false,
          queriesInputCombines: false,
        },
        trapCaches: {},
        trapCacheDownloadTime: 0,
      };

      t.is(util.getMlPoweredJsQueriesStatus(config), expectedStatus);
    });
  });
}

function formatGitHubVersion(version: util.GitHubVersion): string {
  switch (version.type) {
    case util.GitHubVariant.DOTCOM:
      return "dotcom";
    case util.GitHubVariant.GHAE:
      return "GHAE";
    case util.GitHubVariant.GHES:
      return `GHES ${version.version}`;
    default:
      util.assertNever(version);
  }
}

const CHECK_ACTION_VERSION_TESTS: Array<[string, util.GitHubVersion, boolean]> =
  [
    ["1.2.1", { type: util.GitHubVariant.DOTCOM }, true],
    ["1.2.1", { type: util.GitHubVariant.GHAE }, true],
    ["1.2.1", { type: util.GitHubVariant.GHES, version: "3.3" }, false],
    ["1.2.1", { type: util.GitHubVariant.GHES, version: "3.4" }, true],
    ["1.2.1", { type: util.GitHubVariant.GHES, version: "3.5" }, true],
    ["2.2.1", { type: util.GitHubVariant.DOTCOM }, false],
    ["2.2.1", { type: util.GitHubVariant.GHAE }, false],
    ["2.2.1", { type: util.GitHubVariant.GHES, version: "3.3" }, false],
    ["2.2.1", { type: util.GitHubVariant.GHES, version: "3.4" }, false],
    ["2.2.1", { type: util.GitHubVariant.GHES, version: "3.5" }, false],
  ];

for (const [
  version,
  githubVersion,
  shouldReportWarning,
] of CHECK_ACTION_VERSION_TESTS) {
  const reportWarningDescription = shouldReportWarning
    ? "reports warning"
    : "doesn't report warning";
  const versionsDescription = `CodeQL Action version ${version} and GitHub version ${formatGitHubVersion(
    githubVersion
  )}`;
  test(`checkActionVersion ${reportWarningDescription} for ${versionsDescription}`, async (t) => {
    const warningSpy = sinon.spy(core, "warning");
    const versionStub = sinon
      .stub(api, "getGitHubVersion")
      .resolves(githubVersion);
    await util.checkActionVersion(version);
    if (shouldReportWarning) {
      t.true(
        warningSpy.calledOnceWithExactly(
          sinon.match("CodeQL Action v1 will be deprecated")
        )
      );
    } else {
      t.false(warningSpy.called);
    }
    versionStub.restore();
  });
}

test("doesDirectoryExist", async (t) => {
  // Returns false if no file/dir of this name exists
  t.false(util.doesDirectoryExist("non-existent-file.txt"));

  await util.withTmpDir(async (tmpDir: string) => {
    // Returns false if file
    const testFile = `${tmpDir}/test-file.txt`;
    fs.writeFileSync(testFile, "");
    t.false(util.doesDirectoryExist(testFile));

    // Returns true if directory
    fs.writeFileSync(`${tmpDir}/nested-test-file.txt`, "");
    t.true(util.doesDirectoryExist(tmpDir));
  });
});

test("listFolder", async (t) => {
  // Returns empty if not a directory
  t.deepEqual(util.listFolder("not-a-directory"), []);

  // Returns empty if directory is empty
  await util.withTmpDir(async (emptyTmpDir: string) => {
    t.deepEqual(util.listFolder(emptyTmpDir), []);
  });

  // Returns all file names in directory
  await util.withTmpDir(async (tmpDir: string) => {
    const nestedDir = fs.mkdtempSync(path.join(tmpDir, "nested-"));
    fs.writeFileSync(path.resolve(nestedDir, "nested-test-file.txt"), "");
    fs.writeFileSync(path.resolve(tmpDir, "test-file-1.txt"), "");
    fs.writeFileSync(path.resolve(tmpDir, "test-file-2.txt"), "");
    fs.writeFileSync(path.resolve(tmpDir, "test-file-3.txt"), "");

    t.deepEqual(util.listFolder(tmpDir), [
      path.resolve(nestedDir, "nested-test-file.txt"),
      path.resolve(tmpDir, "test-file-1.txt"),
      path.resolve(tmpDir, "test-file-2.txt"),
      path.resolve(tmpDir, "test-file-3.txt"),
    ]);
  });
});

const longTime = 999_999;
const shortTime = 10;

test("withTimeout on long task", async (t) => {
  let longTaskTimedOut = false;
  const longTask = new Promise((resolve) => {
    setTimeout(() => {
      resolve(42);
    }, longTime);
  });
  const result = await util.withTimeout(shortTime, longTask, () => {
    longTaskTimedOut = true;
  });
  t.deepEqual(longTaskTimedOut, true);
  t.deepEqual(result, undefined);
});

test("withTimeout on short task", async (t) => {
  let shortTaskTimedOut = false;
  const shortTask = new Promise((resolve) => {
    setTimeout(() => {
      resolve(99);
    }, shortTime);
  });
  const result = await util.withTimeout(longTime, shortTask, () => {
    shortTaskTimedOut = true;
  });
  t.deepEqual(shortTaskTimedOut, false);
  t.deepEqual(result, 99);
});

test("withTimeout doesn't call callback if promise resolves", async (t) => {
  let shortTaskTimedOut = false;
  const shortTask = new Promise((resolve) => {
    setTimeout(() => {
      resolve(99);
    }, shortTime);
  });
  const result = await util.withTimeout(100, shortTask, () => {
    shortTaskTimedOut = true;
  });
  await new Promise((r) => setTimeout(r, 200));
  t.deepEqual(shortTaskTimedOut, false);
  t.deepEqual(result, 99);
});

const mockRepositoryNwo = parseRepositoryNwo("owner/repo");
// eslint-disable-next-line github/array-foreach
[
  {
    name: "disabled",
    features: [],
    hasCustomCodeQL: false,
    languagesInput: undefined,
    languagesInRepository: [],
    expected: false,
    expectedApiCall: false,
  },
  {
    name: "disabled even though swift kotlin bypassed",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: undefined,
    languagesInRepository: [],
    expected: false,
    expectedApiCall: true,
  },
  {
    name: "disabled even though swift kotlin analyzed",
    features: [],
    hasCustomCodeQL: false,
    languagesInput: " sWiFt , KoTlIn ",
    languagesInRepository: [],
    expected: false,
    expectedApiCall: false,
  },
  {
    name: "toolcache bypass all",
    features: [Feature.BypassToolcacheEnabled],
    hasCustomCodeQL: false,
    languagesInput: undefined,
    languagesInRepository: [],
    expected: true,
    expectedApiCall: false,
  },
  {
    name: "custom CodeQL",
    features: [],
    hasCustomCodeQL: true,
    languagesInput: undefined,
    languagesInRepository: [],
    expected: true,
    expectedApiCall: false,
  },
  {
    name: "bypass swift",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: " sWiFt ,other",
    languagesInRepository: [],
    expected: true,
    expectedApiCall: false,
  },
  {
    name: "bypass kotlin",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: "other, KoTlIn ",
    languagesInRepository: [],
    expected: true,
    expectedApiCall: false,
  },
  {
    name: "bypass kotlin language from repository",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: "",
    languagesInRepository: ["KoTlIn", "other"],
    expected: true,
    expectedApiCall: true,
  },
  {
    name: "bypass swift language from repository",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: "",
    languagesInRepository: ["SwiFt", "other"],
    expected: true,
    expectedApiCall: true,
  },
  {
    name: "bypass java from input if there is kotlin in repository",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: "java",
    languagesInRepository: ["kotlin", "other"],
    expected: true,
    expectedApiCall: true,
  },
  {
    name: "don't bypass java from input if there is no kotlin in repository",
    features: [Feature.BypassToolcacheKotlinSwiftEnabled],
    hasCustomCodeQL: false,
    languagesInput: "java",
    languagesInRepository: ["java", "other"],
    expected: false,
    expectedApiCall: true,
  },
].forEach((args) => {
  test(`shouldBypassToolcache: ${args.name}`, async (t) => {
    const mockRequest = mockLanguagesInRepo(args.languagesInRepository);
    const mockLogger = getRunnerLogger(true);
    const featureEnablement = createFeatures(args.features);
    const codeqlUrl = args.hasCustomCodeQL ? "custom-codeql-url" : undefined;
    const actual = await util.shouldBypassToolcache(
      featureEnablement,
      codeqlUrl,
      args.languagesInput,
      mockRepositoryNwo,
      mockLogger
    );
    t.deepEqual(actual, args.expected);
    t.deepEqual(mockRequest.called, args.expectedApiCall);
  });
});