import * as run from "./run";
import * as os from "os";
import * as toolCache from "@actions/tool-cache";
import * as fs from "fs";
import * as path from "path";
import * as core from "@actions/core";

describe("run.ts", () => {
  test("getExecutableExtension() - return .exe when os is Windows", () => {
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");

    expect(run.getExecutableExtension()).toBe(".exe");
    expect(os.type).toBeCalled();
  });

  test("getExecutableExtension() - return empty string for non-windows OS", () => {
    jest.spyOn(os, "type").mockReturnValue("Darwin");

    expect(run.getExecutableExtension()).toBe("");
    expect(os.type).toBeCalled();
  });

  test("getHelmDownloadURL() - return the URL to download helm for Linux", () => {
    jest.spyOn(os, "type").mockReturnValue("Linux");
    jest.spyOn(os, "arch").mockReturnValueOnce("unknown");
    const kubectlLinuxUrl = "https://get.helm.sh/helm-v3.8.0-linux-amd64.zip";

    expect(run.getHelmDownloadURL("v3.8.0")).toBe(kubectlLinuxUrl);
    expect(os.type).toBeCalled();
    expect(os.arch).toBeCalled();

    // arm64
    jest.spyOn(os, "type").mockReturnValue("Linux");
    jest.spyOn(os, "arch").mockReturnValueOnce("arm64");
    const kubectlLinuxArm64Url =
      "https://get.helm.sh/helm-v3.8.0-linux-arm64.zip";

    expect(run.getHelmDownloadURL("v3.8.0")).toBe(kubectlLinuxArm64Url);
    expect(os.type).toBeCalled();
    expect(os.arch).toBeCalled();
  });

  test("getHelmDownloadURL() - return the URL to download helm for Darwin", () => {
    jest.spyOn(os, "type").mockReturnValue("Darwin");
    jest.spyOn(os, "arch").mockReturnValueOnce("unknown");
    const kubectlDarwinUrl = "https://get.helm.sh/helm-v3.8.0-darwin-amd64.zip";

    expect(run.getHelmDownloadURL("v3.8.0")).toBe(kubectlDarwinUrl);
    expect(os.type).toBeCalled();
    expect(os.arch).toBeCalled();

    // arm64
    jest.spyOn(os, "type").mockReturnValue("Darwin");
    jest.spyOn(os, "arch").mockReturnValueOnce("arm64");
    const kubectlDarwinArm64Url =
      "https://get.helm.sh/helm-v3.8.0-darwin-arm64.zip";

    expect(run.getHelmDownloadURL("v3.8.0")).toBe(kubectlDarwinArm64Url);
    expect(os.type).toBeCalled();
    expect(os.arch).toBeCalled();
  });

  test("getValidVersion() - return version with v prepended", () => {
      expect(run.getValidVersion("3.8.0")).toBe("v3.8.0");
  });
  
  test("getHelmDownloadURL() - return the URL to download helm for Windows", () => {
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");

    const kubectlWindowsUrl =
      "https://get.helm.sh/helm-v3.8.0-windows-amd64.zip";
    expect(run.getHelmDownloadURL("v3.8.0")).toBe(kubectlWindowsUrl);
    expect(os.type).toBeCalled();
  });

  test("getLatestHelmVersion() - return the latest version of HELM", async () => {
    try {
      expect(await run.getLatestHelmVersion()).toBe("v3.8.0");
    } catch (e) {
      return e;
    }
  });

  test("walkSync() - return path to the all files matching fileToFind in dir", () => {
    jest.spyOn(fs, "readdirSync").mockImplementation((file, _) => {
      if (file == "mainFolder")
        return [
          "file1" as unknown as fs.Dirent,
          "file2" as unknown as fs.Dirent,
          "folder1" as unknown as fs.Dirent,
          "folder2" as unknown as fs.Dirent,
        ];
      if (file == path.join("mainFolder", "folder1"))
        return [
          "file11" as unknown as fs.Dirent,
          "file12" as unknown as fs.Dirent,
        ];
      if (file == path.join("mainFolder", "folder2"))
        return [
          "file21" as unknown as fs.Dirent,
          "file22" as unknown as fs.Dirent,
        ];
    });
    jest.spyOn(core, "debug").mockImplementation();
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      const isDirectory =
        (file as string).toLowerCase().indexOf("file") == -1 ? true : false;
      return { isDirectory: () => isDirectory } as fs.Stats;
    });

    expect(run.walkSync("mainFolder", null, "file21")).toEqual([
      path.join("mainFolder", "folder2", "file21"),
    ]);
    expect(fs.readdirSync).toBeCalledTimes(3);
    expect(fs.statSync).toBeCalledTimes(8);
  });

  test("walkSync() - return empty array if no file with name fileToFind exists", () => {
    jest.spyOn(fs, "readdirSync").mockImplementation((file, _) => {
      if (file == "mainFolder")
        return [
          "file1" as unknown as fs.Dirent,
          "file2" as unknown as fs.Dirent,
          "folder1" as unknown as fs.Dirent,
          "folder2" as unknown as fs.Dirent,
        ];
      if (file == path.join("mainFolder", "folder1"))
        return [
          "file11" as unknown as fs.Dirent,
          "file12" as unknown as fs.Dirent,
        ];
      if (file == path.join("mainFolder", "folder2"))
        return [
          "file21" as unknown as fs.Dirent,
          "file22" as unknown as fs.Dirent,
        ];
    });
    jest.spyOn(core, "debug").mockImplementation();
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      const isDirectory =
        (file as string).toLowerCase().indexOf("file") == -1 ? true : false;
      return { isDirectory: () => isDirectory } as fs.Stats;
    });

    expect(run.walkSync("mainFolder", null, "helm.exe")).toEqual([]);
    expect(fs.readdirSync).toBeCalledTimes(3);
    expect(fs.statSync).toBeCalledTimes(8);
  });

  test("findHelm() - change access permissions and find the helm in given directory", () => {
    jest.spyOn(fs, "chmodSync").mockImplementation(() => {});
    jest.spyOn(fs, "readdirSync").mockImplementation((file, _) => {
      if (file == "mainFolder") return ["helm.exe" as unknown as fs.Dirent];
    });
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      const isDirectory =
        (file as string).indexOf("folder") == -1 ? false : true;
      return { isDirectory: () => isDirectory } as fs.Stats;
    });
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");

    expect(run.findHelm("mainFolder")).toBe(
      path.join("mainFolder", "helm.exe")
    );
  });

  test("findHelm() - throw error if executable not found", () => {
    jest.spyOn(fs, "chmodSync").mockImplementation(() => {});
    jest.spyOn(fs, "readdirSync").mockImplementation((file, _) => {
      if (file == "mainFolder") return [];
    });
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      return { isDirectory: () => true } as fs.Stats;
    });
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");
    expect(() => run.findHelm("mainFolder")).toThrow(
      "Helm executable not found in path mainFolder"
    );
  });

  test("downloadHelm() - download helm and return path to it", async () => {
    jest.spyOn(toolCache, "find").mockReturnValue("");
    jest.spyOn(toolCache, "downloadTool").mockResolvedValue("pathToTool");
    const response = JSON.stringify([{ tag_name: "v4.0.0" }]);
    jest.spyOn(fs, "readFileSync").mockReturnValue(response);
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");
    jest.spyOn(fs, "chmodSync").mockImplementation(() => {});
    jest.spyOn(toolCache, "extractZip").mockResolvedValue("pathToUnzippedHelm");
    jest.spyOn(toolCache, "cacheDir").mockResolvedValue("pathToCachedDir");
    jest
      .spyOn(fs, "readdirSync")
      .mockImplementation((file, _) => ["helm.exe" as unknown as fs.Dirent]);
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      const isDirectory =
        (file as string).indexOf("folder") == -1 ? false : true;
      return { isDirectory: () => isDirectory } as fs.Stats;
    });

    expect(await run.downloadHelm("v4.0.0")).toBe(
      path.join("pathToCachedDir", "helm.exe")
    );
    expect(toolCache.find).toBeCalledWith("helm", "v4.0.0");
    expect(toolCache.downloadTool).toBeCalledWith(
      "https://get.helm.sh/helm-v4.0.0-windows-amd64.zip"
    );
    expect(fs.chmodSync).toBeCalledWith("pathToTool", "777");
    expect(toolCache.extractZip).toBeCalledWith("pathToTool");
    expect(fs.chmodSync).toBeCalledWith(
      path.join("pathToCachedDir", "helm.exe"),
      "777"
    );
  });

  test("downloadHelm() - throw error if unable to download", async () => {
    jest.spyOn(toolCache, "find").mockReturnValue("");
    jest.spyOn(toolCache, "downloadTool").mockImplementation(async () => {
      throw "Unable to download";
    });
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");

    await expect(run.downloadHelm("v3.2.1")).rejects.toThrow(
      "Failed to download Helm from location https://get.helm.sh/helm-v3.2.1-windows-amd64.zip"
    );
    expect(toolCache.find).toBeCalledWith("helm", "v3.2.1");
    expect(toolCache.downloadTool).toBeCalledWith(
      "https://get.helm.sh/helm-v3.2.1-windows-amd64.zip"
    );
  });

  test("downloadHelm() - return path to helm tool with same version from toolCache", async () => {
    jest.spyOn(toolCache, "find").mockReturnValue("pathToCachedDir");
    jest.spyOn(fs, "chmodSync").mockImplementation(() => {});

    expect(await run.downloadHelm("v3.2.1")).toBe(
      path.join("pathToCachedDir", "helm.exe")
    );
    expect(toolCache.find).toBeCalledWith("helm", "v3.2.1");
    expect(fs.chmodSync).toBeCalledWith(
      path.join("pathToCachedDir", "helm.exe"),
      "777"
    );
  });

  test("downloadHelm() - throw error is helm is not found in path", async () => {
    jest.spyOn(toolCache, "find").mockReturnValue("");
    jest.spyOn(toolCache, "downloadTool").mockResolvedValue("pathToTool");
    jest.spyOn(os, "type").mockReturnValue("Windows_NT");
    jest.spyOn(fs, "chmodSync").mockImplementation();
    jest.spyOn(toolCache, "extractZip").mockResolvedValue("pathToUnzippedHelm");
    jest.spyOn(toolCache, "cacheDir").mockResolvedValue("pathToCachedDir");
    jest.spyOn(fs, "readdirSync").mockImplementation((file, _) => []);
    jest.spyOn(fs, "statSync").mockImplementation((file) => {
      const isDirectory =
        (file as string).indexOf("folder") == -1 ? false : true;
      return { isDirectory: () => isDirectory } as fs.Stats;
    });

    await expect(run.downloadHelm("v3.2.1")).rejects.toThrow(
      "Helm executable not found in path pathToCachedDir"
    );
    expect(toolCache.find).toBeCalledWith("helm", "v3.2.1");
    expect(toolCache.downloadTool).toBeCalledWith(
      "https://get.helm.sh/helm-v3.2.1-windows-amd64.zip"
    );
    expect(fs.chmodSync).toBeCalledWith("pathToTool", "777");
    expect(toolCache.extractZip).toBeCalledWith("pathToTool");
  });
});