feat: add logic

package.json

@@ -65,7 +65,8 @@
     ]
   },
   "dependencies": {
-    "@actions/core": "^1.10.1"
+    "@actions/core": "^1.10.1",
+    "@actions/github": "^6.0.0"
   },
   "devDependencies": {
     "@jest/globals": "^29.7.0",

src/github-services.ts

@@ -0,0 +1,31 @@
+import { debug } from '@actions/core'
+import { getOctokit } from '@actions/github'
+
+export interface IFile {
+  filename: string
+}
+
+export class GitHubService {
+  private readonly octokit
+
+  constructor(gitHubToken: string) {
+    this.octokit = getOctokit(gitHubToken)
+  }
+
+  async getChangedFiles(repositoryOwner: string, repositoryName: string, commitSHA: string): Promise<IFile[]> {
+    const responseBody = await this.octokit.request('GET /repos/{owner}/{repo}/commits/{ref}', {
+      owner: repositoryOwner,
+      repo: repositoryName,
+      ref: commitSHA
+    })
+
+    const files =
+      responseBody.data.files?.map(file => {
+        return { filename: file.filename }
+      }) ?? []
+
+    debug(`Commit ${commitSHA} includes following files: ${JSON.stringify(files)}`)
+
+    return files
+  }
+}

src/main.ts

@@ -1,26 +1,29 @@
-import * as core from '@actions/core'
-import { wait } from './wait'
+import { debug, getInput, setFailed, setOutput } from '@actions/core'
+import { GitHubService, IFile } from './github-services'
+import { context } from '@actions/github'
 
 /**
  * The main function for the action.
  * @returns {Promise<void>} Resolves when the action is complete.
  */
 export async function run(): Promise<void> {
   try {
-    const ms: string = core.getInput('milliseconds')
+    const pattern = getInput('pattern', { required: true })
+    const githubToken = getInput('token', { required: true })
 
-    // Debug logs are only output if the `ACTIONS_STEP_DEBUG` secret is true
-    core.debug(`Waiting ${ms} milliseconds ...`)
+    debug('Inputs received')
 
-    // Log the current timestamp, wait, then log the new timestamp
-    core.debug(new Date().toTimeString())
-    await wait(parseInt(ms, 10))
-    core.debug(new Date().toTimeString())
+    const gitHubService = new GitHubService(githubToken)
+    const commitSHA = context.sha
 
-    // Set outputs for other workflow steps to use
-    core.setOutput('time', new Date().toTimeString())
+    const files: IFile[] = await gitHubService.getChangedFiles(context.repo.owner, context.repo.repo, commitSHA)
+
+    setOutput('time', new Date().toTimeString())
   } catch (error) {
-    // Fail the workflow run if an error occurs
-    if (error instanceof Error) core.setFailed(error.message)
+    if (error instanceof Error) {
+      setFailed(error.message)
+    } else {
+      setFailed('Unknown error occurred')
+    }
   }
 }

src/pattern-matcher.ts

@@ -0,0 +1,14 @@
+import { debug } from '@actions/core'
+import { IFile } from './github-services'
+
+export function checkChangedFilesAgainstPattern(files: IFile[], pattern: string): void {
+  if (!files || files?.length === 0) {
+    debug(`This commit doesn't contain any files`)
+    return
+  }
+  const regExp = new RegExp(pattern)
+  if (files.some(file => regExp.test(file.filename))) {
+    throw new Error(`There is at least one file matching the pattern ${pattern}`)
+  }
+  debug(`There isn't any file matching the pattern ${pattern}`)
+}