using commit messages instead of PR labels

__tests__/main.test.ts

@@ -1,25 +1,30 @@
 import {increment} from '../src/versionBuilder'
 
 test('increment minor version', () => {
-  const nextVersion = increment('1.0.0', '', ['minor'])
+  const nextVersion = increment('1.0.0', '', ['#minor'], 'patch')
   console.log(nextVersion.version)
   expect(nextVersion.version).toEqual('1.1.0')
 })
 
 test('increment major version', () => {
-  const nextVersion = increment('1.0.0', '', ['major'])
+  const nextVersion = increment('1.0.0', '', ['#major'], 'patch')
   console.log(nextVersion.version)
   expect(nextVersion.version).toEqual('2.0.0')
 })
 
 test('increment patch version', () => {
-  const nextVersion = increment('1.0.0', '', ['patch'])
+  const nextVersion = increment('1.0.0', '', ['#patch'], 'patch')
   console.log(nextVersion.version)
   expect(nextVersion.version).toEqual('1.0.1')
 })
 
 test('increment pre patch version', () => {
-  const nextVersion = increment('1.0.0', 'beta', ['prepatch'])
+  const nextVersion = increment(
+    '1.0.0',
+    'beta',
+    ['this is test #prepatch version'],
+    'patch'
+  )
   console.log(nextVersion.version)
   expect(nextVersion.version).toEqual('1.0.1-beta.0')
 })

action.yml

@@ -1,11 +1,15 @@
 name: 'Auto Increment Semver Action'
-description: 'Generates a new version using Pull Request Labels with Semver'
+description: 'Generates a new version using Commit Message Syntax with Semver'
 author: 'Mehmet Can Kanpolat'
 inputs:
   identifier:
     required: false
     description: 'identifier for version (beta,alpha..)'
     default: ''
+  releaseType:
+    required: true
+    description: 'Uses this if any labels cannot be found in the commit messages.'
+    default: 'patch'
   github_token:
     description: 'Token to get tags from the repo. Pass in using `secrets.GITHUB_TOKEN`.'
     required: true

package.json

@@ -2,7 +2,7 @@
   "name": "auto-semver-action",
   "version": "1.0.0",
   "private": true,
-  "description": "Generates a new version using Pull Request Labels with Semver",
+  "description": "Generates a new version using Commit Message Syntax with Semver",
   "main": "lib/main.js",
   "scripts": {
     "build": "tsc",

src/main.ts

@@ -6,16 +6,19 @@ import {getMostRecentVersionFromTags, increment} from './versionBuilder'
 async function run(): Promise<void> {
   try {
     const versionIdentifier: string = core.getInput('identifier') || ''
-    const payloadLabels = context.payload.pull_request?.labels || []
+    const defaultReleaseType: string = core.getInput('releaseType') || ''
+    const commitMessages = context.payload.commits?.message || []
+
     core.debug(`Context payload => ${JSON.stringify(context.payload)}`)
     const latestVer = await getMostRecentVersionFromTags(context)
     const nextVersion = increment(
       latestVer.version,
       versionIdentifier,
-      payloadLabels
+      commitMessages,
+      defaultReleaseType
     )
 
-    core.exportVariable('VERSION', nextVersion?.version)
+    core.exportVariable('version', nextVersion?.version)
     core.setOutput('version', nextVersion?.version)
   } catch (error) {
     core.setFailed(error.message)

src/versionBuilder.ts

@@ -17,23 +17,28 @@ const defaultConfig = {
 export function increment(
   versionNumber: string,
   versionIdentifier: string,
-  labels: string[]
+  commitMessages: string[],
+  defaultReleaseType: string
 ): semver.SemVer {
   const version = semver.parse(versionNumber) || new semver.SemVer('0.0.0')
   core.debug(`Config used => ${JSON.stringify(defaultConfig)}`)
-
   const matchedLabels = new Set<string>()
 
-  core.debug(`Found PR labels on Payload => ${JSON.stringify(labels)}`)
-  for (const label of labels) {
+  for (const message of commitMessages) {
     for (const [key, value] of Object.entries(defaultConfig)) {
-      if (matcher.isMatch(label, value)) {
+      if (matcher.isMatch(message, `*#${value}*`)) {
         matchedLabels.add(key)
       }
     }
   }
 
-  core.debug(`Parsed PR labels => ${JSON.stringify(matchedLabels)}`)
+  core.debug(
+    `Parsed labels from commit messages => ${JSON.stringify(matchedLabels)}`
+  )
+
+  if (matchedLabels.size === 0) {
+    matchedLabels.add(defaultReleaseType)
+  }
 
   for (const label of matchedLabels) {
     version?.inc(label as semver.ReleaseType, versionIdentifier)