Update issue templates

.github/CODEOWNERS

@@ -1 +0,0 @@
-* @Azure/aks-atlanta

.github/ISSUE_TEMPLATE/bugReportForm.yml

@@ -1,36 +0,0 @@
-name: Bug Report
-description: File a bug report specifying all inputs you provided for the action, we will respond to this thread with any questions.
-title: 'Bug: '
-labels: ['bug', 'triage']
-assignees: '@Azure/aks-atlanta'
-body:
-   - type: textarea
-     id: What-happened
-     attributes:
-        label: What happened?
-        description: Tell us what happened and how is it different from the expected?
-        placeholder: Tell us what you see!
-     validations:
-        required: true
-   - type: checkboxes
-     id: Version
-     attributes:
-        label: Version
-        options:
-           - label: I am using the latest version
-             required: true
-   - type: input
-     id: Runner
-     attributes:
-        label: Runner
-        description: What runner are you using?
-        placeholder: Mention the runner info (self-hosted, operating system)
-     validations:
-        required: true
-   - type: textarea
-     id: Logs
-     attributes:
-        label: Relevant log output
-        description: Run in debug mode for the most verbose logs. Please feel free to attach a screenshot of the logs
-     validations:
-        required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,6 +0,0 @@
-blank_issues_enabled: false
-contact_links:
-   - name: GitHub Action "setup-helm" Support
-     url: https://github.com/Azure/setup-helm
-     security: https://github.com/Azure/setup-helm/blob/main/SECURITY.md
-     about: Please ask and answer questions here.

.github/ISSUE_TEMPLATE/featureRequestForm.yml

@@ -1,13 +0,0 @@
-name: Feature Request
-description: File a Feature Request form, we will respond to this thread with any questions.
-title: 'Feature Request: '
-labels: ['Feature']
-assignees: '@Azure/aks-atlanta'
-body:
-   - type: textarea
-     id: Feature_request
-     attributes:
-        label: Feature request
-        description: Provide example functionality and links to relevant docs
-     validations:
-        required: true

.github/ISSUE_TEMPLATE/issue--bug-report---feature-request.md

@@ -4,4 +4,7 @@ about: Create a report to help us improve
 title: ''
 labels: need-to-triage
 assignees: ''
+
 ---
+
+

.github/dependabot.yml

@@ -1,18 +0,0 @@
-version: 2
-updates:
-   - package-ecosystem: npm
-     directory: /
-     schedule:
-        interval: weekly
-     groups:
-        actions:
-           patterns:
-              - '*'
-   - package-ecosystem: github-actions
-     directory: .github/workflows
-     schedule:
-        interval: weekly
-     groups:
-        actions:
-           patterns:
-              - '*'

.github/workflows/TriggerIntegrationTests.sh

@@ -0,0 +1,33 @@
+token=$1
+commit=$2
+repository=$3
+prNumber=$4
+frombranch=$5
+tobranch=$6
+patUser=$7
+
+getPayLoad() {
+    cat <<EOF
+{
+    "event_type": "SetupHelmActionPR", 
+    "client_payload": 
+    {
+        "action": "SetupHelm", 
+        "commit": "$commit", 
+        "repository": "$repository", 
+        "prNumber": "$prNumber", 
+        "tobranch": "$tobranch", 
+        "frombranch": "$frombranch"
+    }
+}
+EOF
+}
+
+response=$(curl -u $patUser:$token -X POST https://api.github.com/repos/Azure/azure-actions-integration-tests/dispatches --data "$(getPayLoad)")
+
+if [ "$response" == "" ]; then
+    echo "Integration tests triggered successfully"
+else
+    echo "Triggering integration tests failed with: '$response'"
+    exit 1
+fi

.github/workflows/defaultLabels.yml

@@ -3,7 +3,7 @@ name: setting-default-labels
 # Controls when the action will run. 
 on:
   schedule:
-      - cron: '0 0/3 * * *'
+  - cron: "0 0/3 * * *"
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
@@ -13,7 +13,8 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-         - uses: actions/stale@v9
+          
+      - uses: actions/stale@v3
         name: Setting issue as idle
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
@@ -24,7 +25,7 @@ jobs:
           operations-per-run: 100
           exempt-issue-labels: 'backlog'
           
-         - uses: actions/stale@v9
+      - uses: actions/stale@v3
         name: Setting PR as idle
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/integration-tests.yml

@@ -1,87 +1,19 @@
-name: 'Trigger Integration tests'
+name: "Trigger Integration tests"
 on:
   pull_request:
     branches:
-         - main
+      - master
       - 'releases/*'
 jobs: 
     trigger-integration-tests:
       name: Trigger Integration tests
       runs-on: ubuntu-latest
-      env:
-         HELM_3_8_0: 'v3.8.0'
-         HELM_3_7_2: 'v3.7.2'
-         HELM_NO_V: '3.5.0'
-         PR_BASE_REF: ${{ github.event.pull_request.base.ref }}
       steps:
         - name: Check out repository
-           uses: actions/checkout@v4
-         - name: npm install and build
-           id: action-npm-build
-           run: |
-              echo $PR_BASE_REF
-              if [[ $PR_BASE_REF != releases/* ]]; then
-                npm install
-                npm run build
-              fi
-         - name: Setup helm
-           uses: ./
+          uses: actions/checkout@v2
           with:
-              version: ${{ env.HELM_3_8_0 }}
-         - name: Validate helm 3.8.0
-           run: |
-              if [[ $(helm version) != *$HELM_3_8_0* ]]; then
-                echo "HELM VERSION INCORRECT: HELM VERSION DOES NOT CONTAIN v3.8.0"
-                echo "HELM VERSION OUTPUT: $(helm version)"
-                exit 1
-              else
-                echo "HELM VERSION $HELM_3_8_0 INSTALLED SUCCESSFULLY"
-              fi
-         - name: Setup helm 3.7.2
-           uses: ./
-           with:
-              version: ${{ env.HELM_3_7_2 }}
-         - name: Validate 3.7.2
-           run: |
-              if [[ $(helm version) != *$HELM_3_7_2* ]]; then
-                echo "HELM VERSION INCORRECT: HELM VERSION DOES NOT CONTAIN v3.7.2"
-                echo "HELM VERSION OUTPUT: $(helm version)"
-                exit 1
-              else
-                echo "HELM VERSION $HELM_3_7_2 INSTALLED SUCCESSFULLY"
-              fi
-         - name: Setup helm 3.5.0 with no v in version
-           uses: ./
-           with:
-              version: ${{ env.HELM_NO_V }}
-         - name: Validate 3.5.0 without v in version
-           run: |
-              if [[ $(helm version) != *$HELM_NO_V* ]]; then
-                echo "HELM VERSION INCORRECT: HELM VERSION DOES NOT CONTAIN v3.5.0"
-                echo "HELM VERSION OUTPUT: $(helm version)"
-                exit 1
-              else
-                echo "HELM VERSION $HELM_3_5_0 INSTALLED SUCCESSFULLY"
-              fi
-         - name: Setup helm latest version
-           uses: ./
-           with:
-              version: latest
-              token: ${{ secrets.GITHUB_TOKEN }}
-         - name: Validate latest
-           env:
-              GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-           run: |
-              HELM_LATEST=$(gh release list \
-                --repo helm/helm \
-                --exclude-drafts \
-                --exclude-pre-releases \
-                --limit 1 | awk '{print $4}')
+              path: IntegrationTests
             
-              if [[ $(helm version) != *$HELM_LATEST* ]]; then
-                echo "HELM VERSION INCORRECT: HELM VERSION DOES NOT CONTAIN $HELM_LATEST"
-                echo "HELM VERSION OUTPUT: $(helm version)"
-                exit 1
-              else
-                echo "HELM VERSION $HELM_LATEST INSTALLED SUCCESSFULLY"
-              fi
+        - name: Trigger Test run
+          run: |
+            bash ./IntegrationTests/.github/workflows/TriggerIntegrationTests.sh ${{ secrets.L2_REPO_TOKEN }} ${{ github.event.pull_request.head.sha }} ${{ github.repository }} ${{ github.event.pull_request.number }} ${{ github.event.pull_request.head.ref }} ${{ github.event.pull_request.base.ref }} ${{ secrets.L2_REPO_USER }}

.github/workflows/prettify-code.yml

@@ -1,18 +0,0 @@
-name: 'Run prettify'
-on:
-   pull_request:
-   push:
-      branches: [main]
-
-jobs:
-   prettier:
-      name: Prettier Check
-      runs-on: ubuntu-latest
-      steps:
-         - name: Checkout Repository
-           uses: actions/checkout@v4
-
-         - name: Enforce Prettier
-           uses: actionsx/prettier@v3
-           with:
-              args: --check .

.github/workflows/release-pr.yml

@@ -1,18 +0,0 @@
-name: Release Project
-
-on:
-   push:
-      branches:
-         - main
-      paths:
-         - CHANGELOG.md
-   workflow_dispatch:
-
-jobs:
-   release:
-      permissions:
-         actions: read
-         contents: write
-      uses: Azure/action-release-workflows/.github/workflows/release_js_project.yaml@v1
-      with:
-         changelogPath: ./CHANGELOG.md

.github/workflows/tag-and-draft.yml

@@ -1,10 +0,0 @@
-name: Tag and create release draft
-
-on:
-   push:
-      branches:
-         - releases/*
-
-jobs:
-   tag-and-release:
-      uses: OliverMKing/javascript-release-workflow/.github/workflows/tag-and-release.yml@main

.github/workflows/unit-tests.yml

@@ -1,19 +1,19 @@
-name: 'Run unit tests.'
+name: "Run unit tests."
 on: # rebuild any PRs and main branch changes
   pull_request:
     branches:
-         - main
+      - master
       - 'releases/*'
   push:
     branches:
-         - main
+      - master
       - 'releases/*'
 
 jobs:
   build: # make sure build/ci works properly
     runs-on: ubuntu-latest
     steps:
-         - uses: actions/checkout@v4
+    - uses: actions/checkout@v1
     
     - name: Run L0 tests.
       run: |

.gitignore

@@ -11,6 +11,8 @@ pids
 *.seed
 *.pid.lock
 
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
@@ -60,5 +62,3 @@ typings/
 
 node_modules
 coverage
-
-# Transpiled JS

.prettierignore

@@ -1,4 +0,0 @@
-# dependencies
-/node_modules
-coverage
-/lib

.prettierrc.json

@@ -1,8 +0,0 @@
-{
-   "trailingComma": "none",
-   "bracketSpacing": false,
-   "semi": false,
-   "tabWidth": 3,
-   "singleQuote": true,
-   "printWidth": 80
-}

CHANGELOG.md

@@ -1,19 +0,0 @@
-# Change Log
-
-## [4.3.0] - 2025-02-15
-
--  #152 feat: log when restoring from cache
--  #157 Dependencies Update
--  #137 Add dependabot
-
-## [4.2.0] - 2024-04-15
-
--  #124 Fix OS detection and download OS-native archive extension
-
-## [4.1.0] - 2024-03-01
-
--  #130 switches to use Helm published file to read latest version instead of using GitHub releases
-
-## [4.0.0] - 2024-02-12
-
--  #121 update to node20 as node16 is deprecated

README.md

@@ -1,25 +1,19 @@
 # Setup Helm
+#### Install a specific version of helm binary on the runner.
 
-Install a specific version of helm binary on the runner.
-
-## Example
-
-Acceptable values are latest or any semantic version string like v3.5.0 Use this action in workflow to define which version of helm will be used. v2+ of this action only support Helm3.
+Acceptable values are latest or any semantic version string like v2.16.7 Use this action in workflow to define which version of helm will be used.
 
 ```yaml
-- uses: azure/setup-helm@v4.3.0
+- uses: azure/setup-helm@v1
   with:
-     version: '<version>' # default is latest (stable)
+    version: '<version>' # default is latest stable
   id: install
 ```
 
-> [!NOTE]
-> If something goes wrong with fetching the latest version the action will use the hardcoded default stable version (currently v3.13.3). If you rely on a certain version higher than the default, you should explicitly use that version instead of latest.
-
 The cached helm binary path is prepended to the PATH environment variable as well as stored in the helm-path output variable.
 Refer to the action metadata file for details about all the inputs https://github.com/Azure/setup-helm/blob/master/action.yml
 
-## Contributing
+# Contributing
 
 This project welcomes contributions and suggestions.  Most contributions require you to agree to a
 Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
@@ -32,7 +26,3 @@ provided by the bot. You will only need to do this once across all repos using o
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
 For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
 contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
-
-## Support
-
-setup-helm is an open source project that is [**not** covered by the Microsoft Azure support policy](https://support.microsoft.com/en-us/help/2941892/support-for-linux-and-open-source-technology-in-azure). [Please search open issues here](https://github.com/Azure/setup-helm/issues), and if your issue isn't already represented please [open a new one](https://github.com/Azure/setup-helm/issues/new/choose). The project maintainers will respond to the best of their abilities.

SECURITY.md

@@ -4,7 +4,7 @@
 
 Microsoft takes the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations, which include [Microsoft](https://github.com/Microsoft), [Azure](https://github.com/Azure), [DotNet](https://github.com/dotnet), [AspNet](https://github.com/aspnet), [Xamarin](https://github.com/xamarin), and [many more](https://opensource.microsoft.com/).
 
-If you believe you have found a security vulnerability in any Microsoft-owned repository that meets Microsoft's [definition](<https://docs.microsoft.com/en-us/previous-versions/tn-archive/cc751383(v=technet.10)>) of a security vulnerability, please report it to us as described below.
+If you believe you have found a security vulnerability in any Microsoft-owned repository that meets Microsoft's [definition](https://docs.microsoft.com/en-us/previous-versions/tn-archive/cc751383(v=technet.10)) of a security vulnerability, please report it to us as described below.
 
 ## Reporting Security Issues
 
@@ -18,13 +18,13 @@ You should receive a response within 24 hours. If for some reason you do not, pl
 
 Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue:
 
--  Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
--  Full paths of source file(s) related to the manifestation of the issue
--  The location of the affected source code (tag/branch/commit or direct URL)
--  Any special configuration required to reproduce the issue
--  Step-by-step instructions to reproduce the issue
--  Proof-of-concept or exploit code (if possible)
--  Impact of the issue, including how an attacker might exploit the issue
+  * Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
+  * Full paths of source file(s) related to the manifestation of the issue
+  * The location of the affected source code (tag/branch/commit or direct URL)
+  * Any special configuration required to reproduce the issue
+  * Step-by-step instructions to reproduce the issue
+  * Proof-of-concept or exploit code (if possible)
+  * Impact of the issue, including how an attacker might exploit the issue
 
 This information will help us triage your report more quickly.
 

__tests__/run.test.ts

@@ -0,0 +1,195 @@
+import * as run from '../src/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');
+        const kubectlLinuxUrl = 'https://get.helm.sh/helm-v3.2.1-linux-amd64.zip'
+
+        expect(run.getHelmDownloadURL('v3.2.1')).toBe(kubectlLinuxUrl);
+        expect(os.type).toBeCalled();         
+    });
+
+    test('getHelmDownloadURL() - return the URL to download helm for Darwin', () => {
+        jest.spyOn(os, 'type').mockReturnValue('Darwin');
+        const kubectlDarwinUrl = 'https://get.helm.sh/helm-v3.2.1-darwin-amd64.zip'
+
+        expect(run.getHelmDownloadURL('v3.2.1')).toBe(kubectlDarwinUrl);
+        expect(os.type).toBeCalled();         
+    });
+
+    test('getHelmDownloadURL() - return the URL to download helm for Windows', () => {
+        jest.spyOn(os, 'type').mockReturnValue('Windows_NT');
+
+        const kubectlWindowsUrl = 'https://get.helm.sh/helm-v3.2.1-windows-amd64.zip'
+        expect(run.getHelmDownloadURL('v3.2.1')).toBe(kubectlWindowsUrl);
+        expect(os.type).toBeCalled();         
+    });
+
+    test('getStableHelmVersion() - download stable version file, read version and return it', async () => {
+        jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool');
+        const response = JSON.stringify(
+            [
+                {
+                    'tag_name': 'v4.0.0'
+                }, {
+                    'tag_name': 'v3.0.0'
+                }, {
+                    'tag_name': 'v2.0.0'
+                }
+            ]
+        );
+        jest.spyOn(fs, 'readFileSync').mockReturnValue(response);
+
+        expect(await run.getStableHelmVersion()).toBe('v4.0.0');
+        expect(toolCache.downloadTool).toBeCalled();
+        expect(fs.readFileSync).toBeCalledWith('pathToTool', 'utf8');
+    });
+
+    test('getStableHelmVersion() - return default version if error occurs while getting latest version', async () => {
+        jest.spyOn(toolCache, 'downloadTool').mockRejectedValue('Unable to download');
+        jest.spyOn(core, 'warning').mockImplementation();
+
+        expect(await run.getStableHelmVersion()).toBe('v3.2.1');
+        expect(toolCache.downloadTool).toBeCalled();
+        expect(core.warning).toBeCalledWith("Cannot get the latest Helm info from https://api.github.com/repos/helm/helm/releases. Error Unable to download. Using default Helm version v3.2.1.");
+    });
+
+    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(null)).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');
+    });
+});  

action.yml

@@ -6,19 +6,14 @@ inputs:
     required: true
     default: 'latest'
   token:
-      description: GitHub token. Used to be required to fetch the latest version
-      required: false
-      deprecationMessage: 'GitHub token is no longer required'
-      default: '${{ github.token }}'
-   downloadBaseURL:
-      description: 'Set the download base URL'
-      required: false
-      default: 'https://get.helm.sh'
+    description: 'Github token'
+    default: ${{ github.token }}
+    required: true
 outputs:
   helm-path:
     description: 'Path to the cached helm binary'
 branding:
   color: 'blue'
 runs:
-   using: 'node20'
-   main: 'lib/index.js'
+  using: 'node12'
+  main: 'lib/run.js'

jest.config.js

@@ -8,11 +8,11 @@ module.exports = {
   },
   verbose: true,
   coverageThreshold: {
-      global: {
-         branches: 0,
-         functions: 14,
-         lines: 27,
-         statements: 27
+    "global": {
+      "branches": 0,
+      "functions": 14,
+      "lines": 27,
+      "statements": 27
     }
   }
 }

lib/run.js

@@ -0,0 +1,222 @@
+"use strict";
+// Copyright (c) Microsoft Corporation.
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getStableHelmVersion = void 0;
+const os = __importStar(require("os"));
+const path = __importStar(require("path"));
+const util = __importStar(require("util"));
+const fs = __importStar(require("fs"));
+const semver = __importStar(require("semver"));
+const toolCache = __importStar(require("@actions/tool-cache"));
+const core = __importStar(require("@actions/core"));
+const graphql_1 = require("@octokit/graphql");
+const helmToolName = 'helm';
+const stableHelmVersion = 'v3.2.1';
+const stableHelm3Version = 'v3.5.3';
+const stableHelm2Version = 'v2.17.0';
+const LATEST_HELM2_VERSION = '2.*';
+const LATEST_HELM3_VERSION = '3.*';
+const helmAllReleasesUrl = 'https://api.github.com/repos/helm/helm/releases';
+function getExecutableExtension() {
+    if (os.type().match(/^Win/)) {
+        return '.exe';
+    }
+    return '';
+}
+function getHelmDownloadURL(version) {
+    switch (os.type()) {
+        case 'Linux':
+            return util.format('https://get.helm.sh/helm-%s-linux-amd64.zip', version);
+        case 'Darwin':
+            return util.format('https://get.helm.sh/helm-%s-darwin-amd64.zip', version);
+        case 'Windows_NT':
+        default:
+            return util.format('https://get.helm.sh/helm-%s-windows-amd64.zip', version);
+    }
+}
+function getStableHelmVersion() {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            const downloadPath = yield toolCache.downloadTool(helmAllReleasesUrl);
+            const responseArray = JSON.parse(fs.readFileSync(downloadPath, 'utf8').toString().trim());
+            let latestHelmVersion = semver.clean(stableHelmVersion);
+            responseArray.forEach(response => {
+                if (response && response.tag_name) {
+                    let currentHelmVerison = semver.clean(response.tag_name.toString());
+                    if (currentHelmVerison) {
+                        if (currentHelmVerison.toString().indexOf('rc') == -1 && semver.gt(currentHelmVerison, latestHelmVersion)) {
+                            //If current helm version is not a pre release and is greater than latest helm version
+                            latestHelmVersion = currentHelmVerison;
+                        }
+                    }
+                }
+            });
+            latestHelmVersion = "v" + latestHelmVersion;
+            return latestHelmVersion;
+        }
+        catch (error) {
+            core.warning(util.format("Cannot get the latest Helm info from %s. Error %s. Using default Helm version %s.", helmAllReleasesUrl, error, stableHelmVersion));
+        }
+        return stableHelmVersion;
+    });
+}
+exports.getStableHelmVersion = getStableHelmVersion;
+var walkSync = function (dir, filelist, fileToFind) {
+    var files = fs.readdirSync(dir);
+    filelist = filelist || [];
+    files.forEach(function (file) {
+        if (fs.statSync(path.join(dir, file)).isDirectory()) {
+            filelist = walkSync(path.join(dir, file), filelist, fileToFind);
+        }
+        else {
+            core.debug(file);
+            if (file == fileToFind) {
+                filelist.push(path.join(dir, file));
+            }
+        }
+    });
+    return filelist;
+};
+function downloadHelm(version) {
+    return __awaiter(this, void 0, void 0, function* () {
+        if (!version) {
+            version = yield getLatestHelmVersionFor("v3");
+        }
+        let cachedToolpath = toolCache.find(helmToolName, version);
+        if (!cachedToolpath) {
+            let helmDownloadPath;
+            try {
+                helmDownloadPath = yield toolCache.downloadTool(getHelmDownloadURL(version));
+            }
+            catch (exception) {
+                throw new Error(util.format("Failed to download Helm from location ", getHelmDownloadURL(version)));
+            }
+            fs.chmodSync(helmDownloadPath, '777');
+            const unzipedHelmPath = yield toolCache.extractZip(helmDownloadPath);
+            cachedToolpath = yield toolCache.cacheDir(unzipedHelmPath, helmToolName, version);
+        }
+        const helmpath = findHelm(cachedToolpath);
+        if (!helmpath) {
+            throw new Error(util.format("Helm executable not found in path ", cachedToolpath));
+        }
+        fs.chmodSync(helmpath, '777');
+        return helmpath;
+    });
+}
+function getLatestHelmVersionFor(type) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const token = core.getInput('token', { 'required': true });
+        try {
+            const { repository } = yield graphql_1.graphql(`{
+                repository(name: "helm", owner: "helm") {
+                    releases(last: 100)  {
+                        nodes {
+                            tagName
+                        }
+                    }
+                }
+            }`, {
+                headers: {
+                    authorization: `token ${token}`
+                }
+            });
+            const releases = repository.releases.nodes.reverse();
+            let latestValidRelease = releases.find(release => isValidVersion(release.tagName, type));
+            if (latestValidRelease)
+                return latestValidRelease.tagName;
+        }
+        catch (err) {
+            core.warning(util.format("Error while fetching the latest Helm %s release. Error: %s. Using default Helm version %s.", type, err.toString(), getStableHelmVersionFor(type)));
+            return getStableHelmVersionFor(type);
+        }
+        core.warning(util.format("Could not find stable release for Helm %s. Using default Helm version %s.", type, getStableHelmVersionFor(type)));
+        return getStableHelmVersionFor(type);
+    });
+}
+function getStableHelmVersionFor(type) {
+    return type === "v2" ? stableHelm2Version : stableHelm3Version;
+}
+// isValidVersion checks if verison matches the specified type and is a stable release
+function isValidVersion(version, type) {
+    if (!version.toLocaleLowerCase().startsWith(type))
+        return false;
+    return version.indexOf('rc') == -1;
+}
+function findHelm(rootFolder) {
+    fs.chmodSync(rootFolder, '777');
+    var filelist = [];
+    walkSync(rootFolder, filelist, helmToolName + getExecutableExtension());
+    if (!filelist) {
+        throw new Error(util.format("Helm executable not found in path ", rootFolder));
+    }
+    else {
+        return filelist[0];
+    }
+}
+function run() {
+    return __awaiter(this, void 0, void 0, function* () {
+        let version = core.getInput('version', { 'required': true });
+        if (process.env['HELM_INSTALLER_LEGACY_VERSIONING'] == 'true') {
+            if (version.toLocaleLowerCase() === 'latest') {
+                version = yield getStableHelmVersion();
+            }
+            else if (!version.toLocaleLowerCase().startsWith('v')) {
+                version = 'v' + version;
+            }
+        }
+        else {
+            if (version.toLocaleLowerCase() === 'latest' || version === LATEST_HELM3_VERSION) {
+                version = yield getLatestHelmVersionFor("v3");
+            }
+            else if (version === LATEST_HELM2_VERSION) {
+                version = yield getLatestHelmVersionFor("v2");
+            }
+            else if (!version.toLocaleLowerCase().startsWith('v')) {
+                version = 'v' + version;
+            }
+        }
+        core.debug(util.format("Downloading %s", version));
+        let cachedPath = yield downloadHelm(version);
+        try {
+            if (!process.env['PATH'].startsWith(path.dirname(cachedPath))) {
+                core.addPath(path.dirname(cachedPath));
+            }
+        }
+        catch (_a) {
+            //do nothing, set as output variable
+        }
+        console.log(`Helm tool version: '${version}' has been cached at ${cachedPath}`);
+        core.setOutput('helm-path', cachedPath);
+    });
+}
+run().catch(core.setFailed);

package.json

@@ -1,35 +1,29 @@
 {
     "name": "setuphelm",
-   "version": "4.3.0",
+    "version": "0.0.0",
     "private": true,
     "description": "Setup helm",
     "author": "Anumita Shenoy",
     "license": "MIT",
     "dependencies": {
-      "@actions/core": "^1.11.1",
-      "@actions/exec": "^1.1.1",
-      "@actions/io": "^1.1.2",
-      "@actions/tool-cache": "2.0.2",
-      "@octokit/action": "^7.0.0",
-      "ncc": "^0.3.6",
-      "semver": "^7.7.1"
+        "@actions/core": "^1.2.6",
+        "@actions/exec": "^1.0.0",
+        "@actions/io": "^1.0.0",
+        "@actions/tool-cache": "1.1.2",
+        "@octokit/graphql": "^4.6.1",
+        "semver": "^6.1.0"
     },
-   "main": "lib/index.js",
+    "main": "lib/run.js",
     "scripts": {
-      "prebuild": "npm i ncc",
-      "build": "ncc build src/index.ts -o lib",
+        "build": "tsc --outDir ./lib --rootDir ./src",
         "test": "jest",
-      "test-coverage": "jest --coverage",
-      "format": "prettier --write .",
-      "format-check": "prettier --check ."
+        "test-coverage": "jest --coverage"
     },
     "devDependencies": {
-      "@types/jest": "^29.5.14",
-      "@types/node": "^22.13.1",
-      "@vercel/ncc": "^0.38.3",
-      "jest": "^29.7.0",
-      "prettier": "^3.5.0",
-      "ts-jest": "^29.2.5",
-      "typescript": "^5.7.3"
+        "@types/node": "^12.0.10",
+        "typescript": "^3.5.2",
+        "jest": "^26.0.1",
+        "@types/jest": "^25.2.2",
+        "ts-jest": "^25.5.1"
     }
 }

src/index.ts

@@ -1,4 +0,0 @@
-import {run} from './run'
-import * as core from '@actions/core'
-
-run().catch(core.setFailed)

src/run.test.ts

@@ -1,299 +0,0 @@
-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', () => {
-   const downloadBaseURL = 'https://test.tld'
-
-   // Cleanup mocks after each test to ensure that subsequent tests are not affected by the mocks.
-   afterEach(() => {
-      jest.restoreAllMocks()
-   })
-
-   test('getExecutableExtension() - return .exe when os is Windows', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
-
-      expect(run.getExecutableExtension()).toBe('.exe')
-      expect(os.platform).toHaveBeenCalled()
-   })
-
-   test('getExecutableExtension() - return empty string for non-windows OS', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
-
-      expect(run.getExecutableExtension()).toBe('')
-      expect(os.platform).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Linux amd64', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('linux')
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
-      const expected = 'https://test.tld/helm-v3.8.0-linux-amd64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Linux arm64', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('linux')
-      jest.spyOn(os, 'arch').mockReturnValue('arm64')
-      const expected = 'https://test.tld/helm-v3.8.0-linux-arm64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Darwin x64', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
-      const expected = 'https://test.tld/helm-v3.8.0-darwin-amd64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Darwin arm64', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
-      jest.spyOn(os, 'arch').mockReturnValue('arm64')
-      const expected = 'https://test.tld/helm-v3.8.0-darwin-arm64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Windows', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
-
-      const expected = 'https://test.tld/helm-v3.8.0-windows-amd64.zip'
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-   })
-
-   test('getLatestHelmVersion() - return the latest version of HELM', async () => {
-      const res = {
-         status: 200,
-         text: async () => 'v9.99.999'
-      } as Response
-      global.fetch = jest.fn().mockReturnValue(res)
-      expect(await run.getLatestHelmVersion()).toBe('v9.99.999')
-   })
-
-   test('getLatestHelmVersion() - return the stable version of HELM when simulating a network error', async () => {
-      const errorMessage: string = 'Network Error'
-      global.fetch = jest.fn().mockRejectedValueOnce(new Error(errorMessage))
-      expect(await run.getLatestHelmVersion()).toBe('v3.13.3')
-   })
-
-   test('getValidVersion() - return version with v prepended', () => {
-      expect(run.getValidVersion('3.8.0')).toBe('v3.8.0')
-   })
-
-   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
-            ]
-         return []
-      })
-      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).toHaveBeenCalledTimes(3)
-      expect(fs.statSync).toHaveBeenCalledTimes(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
-            ]
-         return []
-      })
-      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).toHaveBeenCalledTimes(3)
-      expect(fs.statSync).toHaveBeenCalledTimes(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]
-         return []
-      })
-      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, 'platform').mockReturnValue('win32')
-
-      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 []
-         return []
-      })
-      jest.spyOn(fs, 'statSync').mockImplementation((file) => {
-         return {isDirectory: () => true} as fs.Stats
-      })
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
-
-      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, 'platform').mockReturnValue('win32')
-      jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
-      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(downloadBaseURL, 'v4.0.0')).toBe(
-         path.join('pathToCachedDir', 'helm.exe')
-      )
-      expect(toolCache.find).toHaveBeenCalledWith('helm', 'v4.0.0')
-      expect(toolCache.downloadTool).toHaveBeenCalledWith(
-         'https://test.tld/helm-v4.0.0-windows-amd64.zip'
-      )
-      expect(fs.chmodSync).toHaveBeenCalledWith('pathToTool', '777')
-      expect(toolCache.extractZip).toHaveBeenCalledWith('pathToTool')
-      expect(fs.chmodSync).toHaveBeenCalledWith(
-         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, 'platform').mockReturnValue('win32')
-
-      const downloadUrl = 'https://test.tld/helm-v3.2.1-windows-amd64.zip'
-      await expect(run.downloadHelm(downloadBaseURL, 'v3.2.1')).rejects.toThrow(
-         `Failed to download Helm from location ${downloadUrl}`
-      )
-      expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')
-      expect(toolCache.downloadTool).toHaveBeenCalledWith(`${downloadUrl}`)
-   })
-
-   test('downloadHelm() - return path to helm tool with same version from toolCache', async () => {
-      jest.spyOn(toolCache, 'find').mockReturnValue('pathToCachedDir')
-      jest.spyOn(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
-      jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
-      jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
-      jest
-         .spyOn(fs, 'readdirSync')
-         .mockReturnValue(['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(downloadBaseURL, 'v3.2.1')).toBe(
-         path.join('pathToCachedDir', 'helm.exe')
-      )
-      expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')
-      expect(fs.chmodSync).toHaveBeenCalledWith(
-         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(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
-      jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
-      jest.spyOn(fs, 'chmodSync').mockImplementation()
-      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(downloadBaseURL, 'v3.2.1')).rejects.toThrow(
-         'Helm executable not found in path pathToCachedDir'
-      )
-      expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')
-      expect(toolCache.downloadTool).toHaveBeenCalledWith(
-         'https://test.tld/helm-v3.2.1-windows-amd64.zip'
-      )
-      expect(fs.chmodSync).toHaveBeenCalledWith('pathToTool', '777')
-      expect(toolCache.extractZip).toHaveBeenCalledWith('pathToTool')
-   })
-})

src/run.ts

@@ -1,159 +1,202 @@
 // Copyright (c) Microsoft Corporation.
+// Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-import * as os from 'os'
-import * as path from 'path'
-import * as util from 'util'
-import * as fs from 'fs'
+import * as os from 'os';
+import * as path from 'path';
+import * as util from 'util';
+import * as fs from 'fs';
+import * as semver from 'semver';
 
-import * as toolCache from '@actions/tool-cache'
-import * as core from '@actions/core'
+import * as toolCache from '@actions/tool-cache';
+import * as core from '@actions/core';
+import { graphql } from '@octokit/graphql';
 
-const helmToolName = 'helm'
-const stableHelmVersion = 'v3.13.3'
-
-export async function run() {
-   let version = core.getInput('version', {required: true})
-
-   if (version !== 'latest' && version[0] !== 'v') {
-      core.info('Getting latest Helm version')
-      version = getValidVersion(version)
-   }
-   if (version.toLocaleLowerCase() === 'latest') {
-      version = await getLatestHelmVersion()
-   }
-
-   const downloadBaseURL = core.getInput('downloadBaseURL', {required: false})
-
-   core.startGroup(`Installing ${version}`)
-   const cachedPath = await downloadHelm(downloadBaseURL, version)
-   core.endGroup()
-
-   try {
-      if (!process.env['PATH'].startsWith(path.dirname(cachedPath))) {
-         core.addPath(path.dirname(cachedPath))
-      }
-   } catch {
-      //do nothing, set as output variable
-   }
-
-   core.info(`Helm tool version '${version}' has been cached at ${cachedPath}`)
-   core.setOutput('helm-path', cachedPath)
-}
-
-// Prefixes version with v
-export function getValidVersion(version: string): string {
-   return 'v' + version
-}
-
-// Gets the latest helm version or returns a default stable if getting latest fails
-export async function getLatestHelmVersion(): Promise<string> {
-   try {
-      const response = await fetch('https://get.helm.sh/helm-latest-version')
-      const release = (await response.text()).trim()
-      return release
-   } catch (err) {
-      core.warning(
-         `Error while fetching latest Helm release: ${err.toString()}. Using default version ${stableHelmVersion}`
-      )
-      return stableHelmVersion
-   }
-}
-
-export function getArch(): string {
-   return os.arch() === 'x64' ? 'amd64' : os.arch()
-}
-
-export function getPlatform(): string {
-   return os.platform() === 'win32' ? 'windows' : os.platform()
-}
-
-export function getArchiveExtension(): string {
-   return os.platform() === 'win32' ? 'zip' : 'tar.gz'
-}
+const helmToolName = 'helm';
+const stableHelmVersion = 'v3.2.1';
+const stableHelm3Version = 'v3.5.3';
+const stableHelm2Version = 'v2.17.0';
+const LATEST_HELM2_VERSION = '2.*';
+const LATEST_HELM3_VERSION = '3.*';
+const helmAllReleasesUrl = 'https://api.github.com/repos/helm/helm/releases';
 
 export function getExecutableExtension(): string {
-   return os.platform() === 'win32' ? '.exe' : ''
+    if (os.type().match(/^Win/)) {
+        return '.exe';
+    }
+    return '';
 }
 
-export function getHelmDownloadURL(baseURL: string, version: string): string {
-   const urlPath = `helm-${version}-${getPlatform()}-${getArch()}.${getArchiveExtension()}`
-   const url = new URL(urlPath, baseURL)
-   return url.toString()
+export function getHelmDownloadURL(version: string): string {
+    switch (os.type()) {
+        case 'Linux':
+            return util.format('https://get.helm.sh/helm-%s-linux-amd64.zip', version);
+
+        case 'Darwin':
+            return util.format('https://get.helm.sh/helm-%s-darwin-amd64.zip', version);
+
+        case 'Windows_NT':
+        default:
+            return util.format('https://get.helm.sh/helm-%s-windows-amd64.zip', version);
+    }
 }
 
-export async function downloadHelm(
-   baseURL: string,
-   version: string
-): Promise<string> {
-   let cachedToolpath = toolCache.find(helmToolName, version)
-   if (cachedToolpath) {
-      core.info(`Restoring '${version}' from cache`)
-   } else {
-      core.info(`Downloading '${version}' from '${baseURL}'`)
-      let helmDownloadPath
+export async function getStableHelmVersion(): Promise<string> {
     try {
-         helmDownloadPath = await toolCache.downloadTool(
-            getHelmDownloadURL(baseURL, version)
-         )
-      } catch (exception) {
-         throw new Error(
-            `Failed to download Helm from location ${getHelmDownloadURL(
-               baseURL,
-               version
-            )}`
-         )
+        const downloadPath = await toolCache.downloadTool(helmAllReleasesUrl);
+        const responseArray = JSON.parse(fs.readFileSync(downloadPath, 'utf8').toString().trim());
+        let latestHelmVersion = semver.clean(stableHelmVersion);
+        responseArray.forEach(response => {
+            if (response && response.tag_name) {
+                let currentHelmVerison = semver.clean(response.tag_name.toString());
+                if (currentHelmVerison) {
+                    if (currentHelmVerison.toString().indexOf('rc') == -1 && semver.gt(currentHelmVerison, latestHelmVersion)) {
+                        //If current helm version is not a pre release and is greater than latest helm version
+                        latestHelmVersion = currentHelmVerison;
+                    }
+                }
+            }
+        });
+        latestHelmVersion = "v" + latestHelmVersion;
+        return latestHelmVersion;
+    } catch (error) {
+        core.warning(util.format("Cannot get the latest Helm info from %s. Error %s. Using default Helm version %s.", helmAllReleasesUrl, error, stableHelmVersion));
     }
 
-      fs.chmodSync(helmDownloadPath, '777')
-      const extractedPath =
-         getPlatform() === 'windows'
-            ? await toolCache.extractZip(helmDownloadPath)
-            : await toolCache.extractTar(helmDownloadPath)
-
-      cachedToolpath = await toolCache.cacheDir(
-         extractedPath,
-         helmToolName,
-         version
-      )
-   }
-
-   const helmpath = findHelm(cachedToolpath)
-   if (!helmpath) {
-      throw new Error(
-         util.format('Helm executable not found in path', cachedToolpath)
-      )
-   }
-
-   fs.chmodSync(helmpath, '777')
-   return helmpath
-}
-
-export function findHelm(rootFolder: string): string {
-   fs.chmodSync(rootFolder, '777')
-   var filelist: string[] = []
-   walkSync(rootFolder, filelist, helmToolName + getExecutableExtension())
-   if (!filelist || filelist.length == 0) {
-      throw new Error(
-         util.format('Helm executable not found in path', rootFolder)
-      )
-   } else {
-      return filelist[0]
-   }
+    return stableHelmVersion;
 }
 
 export var walkSync = function (dir, filelist, fileToFind) {
-   var files = fs.readdirSync(dir)
-   filelist = filelist || []
+    var files = fs.readdirSync(dir);
+    filelist = filelist || [];
     files.forEach(function (file) {
         if (fs.statSync(path.join(dir, file)).isDirectory()) {
-         filelist = walkSync(path.join(dir, file), filelist, fileToFind)
-      } else {
-         core.debug(file)
+            filelist = walkSync(path.join(dir, file), filelist, fileToFind);
+        }
+        else {
+            core.debug(file);
             if (file == fileToFind) {
-            filelist.push(path.join(dir, file))
+                filelist.push(path.join(dir, file));
             }
         }
-   })
-   return filelist
+    });
+    return filelist;
+};
+
+export async function downloadHelm(version: string): Promise<string> {
+    if (!version) { version = await getStableHelmVersion(); }
+    let cachedToolpath = toolCache.find(helmToolName, version);
+    if (!cachedToolpath) {
+        let helmDownloadPath;
+        try {
+            helmDownloadPath = await toolCache.downloadTool(getHelmDownloadURL(version));
+        } catch (exception) {
+            throw new Error(util.format("Failed to download Helm from location", getHelmDownloadURL(version)));
         }
+
+        fs.chmodSync(helmDownloadPath, '777');
+        const unzipedHelmPath = await toolCache.extractZip(helmDownloadPath);
+        cachedToolpath = await toolCache.cacheDir(unzipedHelmPath, helmToolName, version);
+    }
+
+    const helmpath = findHelm(cachedToolpath);
+    if (!helmpath) {
+        throw new Error(util.format("Helm executable not found in path", cachedToolpath));
+    }
+
+    fs.chmodSync(helmpath, '777');
+    return helmpath;
+}
+
+async function getLatestHelmVersionFor(type: string): Promise<string> {
+    const token = core.getInput('token', { 'required': true });
+    try {
+        const { repository } = await graphql(
+            `{
+                repository(name: "helm", owner: "helm") {
+                    releases(last: 100)  {
+                        nodes {
+                            tagName
+                        }
+                    }
+                }
+            }`,
+            {
+                headers: {
+                    authorization: `token ${token}`
+                }
+            }
+        );
+
+        const releases = repository.releases.nodes.reverse();
+        let latestValidRelease = releases.find(release => isValidVersion(release.tagName, type));
+        if (latestValidRelease)
+            return latestValidRelease.tagName;
+    } catch (err) {
+        core.warning(util.format("Error while fetching the latest Helm %s release. Error: %s. Using default Helm version %s.", type, err.toString(), getStableHelmVersionFor(type)));
+        return getStableHelmVersionFor(type);
+    }
+    core.warning(util.format("Could not find stable release for Helm %s. Using default Helm version %s.", type, getStableHelmVersionFor(type)));
+    return getStableHelmVersionFor(type);
+}
+
+function getStableHelmVersionFor(type: string) {
+    return type === "v2" ? stableHelm2Version : stableHelm3Version;
+}
+
+// isValidVersion checks if verison matches the specified type and is a stable release
+function isValidVersion(version: string, type: string): boolean {
+    if (!version.toLocaleLowerCase().startsWith(type))
+        return false;
+    return version.indexOf('rc') == -1;
+}
+
+export function findHelm(rootFolder: string): string {
+    fs.chmodSync(rootFolder, '777');
+    var filelist: string[] = [];
+    walkSync(rootFolder, filelist, helmToolName + getExecutableExtension());
+    if (!filelist || filelist.length == 0) {
+        throw new Error(util.format("Helm executable not found in path", rootFolder));
+    }
+    else {
+        return filelist[0];
+    }
+}
+
+export async function run() {
+    let version = core.getInput('version', { 'required': true });
+
+    if (process.env['HELM_INSTALLER_LEGACY_VERSIONING'] == 'true') {
+        if (version.toLocaleLowerCase() === 'latest') {
+            version = await getStableHelmVersion();
+        } else if (!version.toLocaleLowerCase().startsWith('v')) {
+            version = 'v' + version;
+        }
+    } else {
+        if (version.toLocaleLowerCase() === 'latest' || version === LATEST_HELM3_VERSION) {
+            version = await getLatestHelmVersionFor("v3");
+        } else if (version === LATEST_HELM2_VERSION) {
+            version = await getLatestHelmVersionFor("v2");
+        } else if (!version.toLocaleLowerCase().startsWith('v')) {
+            version = 'v' + version;
+        }
+    }
+
+    core.debug(util.format("Downloading %s", version));
+    let cachedPath = await downloadHelm(version);
+
+    try {
+
+        if (!process.env['PATH'].startsWith(path.dirname(cachedPath))) {
+            core.addPath(path.dirname(cachedPath));
+        }
+    }
+    catch {
+        //do nothing, set as output variable
+    }
+
+    console.log(`Helm tool version: '${version}' has been cached at ${cachedPath}`);
+    core.setOutput('helm-path', cachedPath);
+}
+
+run().catch(core.setFailed);

tsconfig.json

@@ -2,8 +2,8 @@
   "compilerOptions": {
     /* Basic Options */
     // "incremental": true,                   /* Enable incremental compilation */
-      "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
-      "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */
     // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
@@ -11,8 +11,8 @@
     // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
     // "sourceMap": true,                     /* Generates corresponding '.map' file. */
     // "outFile": "./",                       /* Concatenate and emit output to single file. */
-      "outDir": "./lib" /* Redirect output structure to the directory. */,
-      "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
+    "outDir": "./lib",                        /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
     // "composite": true,                     /* Enable project compilation */
     // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
     // "removeComments": true,                /* Do not emit comments to output. */
@@ -23,7 +23,7 @@
 
     /* Strict Type-Checking Options */
     //"strict": true,                           /* Enable all strict type-checking options. */
-      "noImplicitAny": false /* Raise error on expressions and declarations with an implied 'any' type. */,
+    "noImplicitAny": false,                 /* Raise error on expressions and declarations with an implied 'any' type. */
     // "strictNullChecks": true,              /* Enable strict null checks. */
     // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
     // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */