Add support for custom variables input

.github/workflows/test-workflow.yml

@@ -13,13 +13,23 @@ jobs:
       - uses: ./
         id: draft-release
         with:
+          variables: |
+            helm-chart=v0.1.1
+            foo=bar
+            my-variable=My Variable
           notes-header: |
             ## Welcome to the {{version}} release of Draft Release
               This is some text to welcome you to the release {{version-number}}.
+            ## Helm Chart
+              The Helm Chart version for this release is {{helm-chart}}.
+            ## My Variable
+              The value of my variable is {{my-variable}}.
           notes-footer: |
             ## Upgrade
             - For Docker, use the {{version}} image from Docker Hub.
             - For Binaries use the {{version-number}} release from GitHub.
+            - For Helm Chart, use the {{helm-chart}} version.
+            - For foo use the {{foo}} version.
 
       - run: |
           echo "Version: ${{ steps.draft-release.outputs.version }}"

README.md

@@ -32,11 +32,12 @@ jobs:
 
 | Name | Type | Description |
 | --- | --- | --- |
+| `github-token` | `string` | The GitHub token to use for the release. (default `github.token`) |
 | `minor-label` | `string` | The label to use for minor releases. (default `enhancement`) |
 | `major-label` | `string` | The label to use for major releases. (default `change`) |
 | `notes-header` | `string` | The header to use for the release notes. |
 | `notes-footer` | `string` | The footer to use for the release notes. |
-| `github-token` | `string` | The GitHub token to use for the release. (default `github.token`) |
+| `variables` | `list` | A list of variables to use in the header and footer. |
 
 ## Outputs
 
@@ -53,6 +54,8 @@ The header and footer have two special placeholders that will be replaced with t
 - `{{version}}` will be replaced with the version number of the next release.
 - `{{version-number}}` will be replaced with the version number of the next release without the `v` prefix.
 
+Additionally, you can use the `variables` input to define additional variables that can be used in the header and footer. These variables should be provided as a list of key-value pairs, using the format key=variable, with each pair separated by a new line. The key represents the variable name, while the value corresponds to the variable's assigned value. The variables can be used in the header and footer by using the syntax `{{variable-name}}`.
+
 ## Examples
 
 ### Add Footer
@@ -74,9 +77,13 @@ jobs:
         with:
           minor-label: 'enhancement'
           major-label: 'change'
+          variables: |
+            my-variable=My Variable
           notes-footer: |
             This is a footer.
             It can be multiline.
+            And can use variables like {{version}} and {{version-number}}.
+            Or custom variables like {{my-variable}}.
 ```
 
 ### Get Version Number of Next Release

__tests__/notes.test.ts

@@ -1,5 +1,13 @@
-import {describe, expect, test} from '@jest/globals'
-import {parseNotes} from '../src/notes'
+import {describe, expect, test, it} from '@jest/globals'
+import {parseNotes, generateReleaseNotes} from '../src/notes'
+import * as github from '@actions/github'
+import {Inputs} from '../src/context'
+import {helpers} from 'handlebars'
+
+jest.mock('@actions/core')
+jest.mock('@actions/github')
+
+let gh: ReturnType<typeof github.getOctokit>
 
 describe('parseNotes', () => {
   test('should return patch with empty labels', () => {
@@ -57,3 +65,40 @@ describe('parseNotes', () => {
     expect(version).toEqual('major')
   })
 })
+
+describe('generateReleaseNotes', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+    gh = github.getOctokit('_')
+  })
+  it('should generate release notes for the given header and footer', async () => {
+    const inputs: Inputs = {
+      githubToken: '_',
+      majorLabel: 'major',
+      minorLabel: 'minor',
+      header: 'header with version-number {{version-number}} and foo {{foo}}',
+      footer: 'footer with version {{version}} and baz {{baz}}',
+      variables: ['foo=bar', 'baz=qux'],
+    }
+    const latestRelease = 'v1.0.0'
+    const nextRelease = 'v1.1.0'
+
+    const mockResponse: any = {
+      data: {
+        body: 'This is the body',
+      },
+    }
+
+    const mockNotes = jest.spyOn(gh.rest.repos, 'generateReleaseNotes')
+    mockNotes.mockResolvedValue(mockResponse)
+
+    // call the function
+    const notes = await generateReleaseNotes(gh, inputs, latestRelease, nextRelease)
+
+    // assert the result
+    expect(typeof notes).toEqual('string')
+    expect(notes).toContain('header with version-number 1.1.0 and foo bar')
+    expect(notes).toContain('This is the body')
+    expect(notes).toContain('footer with version v1.1.0 and baz qux')
+  })
+})

__tests__/release.test.ts

@@ -137,6 +137,7 @@ describe('createOrUpdateRelease', () => {
     minorLabel: 'minor',
     header: 'header',
     footer: 'footer',
+    variables: [],
   }
   beforeEach(() => {
     jest.clearAllMocks()

__tests__/version.test.ts

@@ -9,6 +9,7 @@ describe('getVersionIncrease', () => {
     githubToken: '',
     header: '',
     footer: '',
+    variables: [],
   }
 
   test('should return patch with empty labels (bug)', async () => {

action.yml

@@ -22,6 +22,10 @@ inputs:
     description: 'Footer to use for changelog'
     default: ''
     required: false
+  variables:
+    description: 'List of variables to use in the header and footer'
+    default: ''
+    required: false
 outputs:
   version:
     description: 'The version of the release'