Add authors MatchConfig option

README.md

@@ -19,13 +19,17 @@ For more control over matching, you can provide a match object instead of a simp
 ```yml
 - any: ['list', 'of', 'globs']
   all: ['list', 'of', 'globs']
+  authors: ['list', 'of', 'authors'] # github users
 ```
 
 One or both fields can be provided for fine-grained matching. Unlike the top-level list, the list of path globs provided to `any` and `all` must ALL match against a path for the label to be applied.
 
+Also, the `authors` field is a list of GitHub usernames that must ALL match the PR author for the label to be applied.
+
 The fields are defined as follows:
 * `any`: match ALL globs against ANY changed path
 * `all`: match ALL globs against ALL changed paths
+* `authors`: match ALL authors against the PR author
 
 A simple path glob is the equivalent to `any: ['glob']`. More specifically, the following two configurations are equivalent:
 ```yml
@@ -80,6 +84,10 @@ source:
 frontend:
 - any: ['src/**/*.js']
   all: ['!src/main.js']
+
+dev-team:
+- any: ['src/**/*']
+  authors: ['user1', 'user2', 'user3']
 ```
 
 ### Create Workflow

__mocks__/@actions/github.ts

@@ -1,7 +1,10 @@
 export const context = {
   payload: {
     pull_request: {
-      number: 123
+      number: 123,
+      user: {
+        login: 'monalisa'
+      }
     }
   },
   repo: {

__tests__/labeler.test.ts

@@ -1,4 +1,4 @@
-import {checkGlobs} from '../src/labeler';
+import {MatchConfig, checkGlobs} from '../src/labeler';
 
 import * as core from '@actions/core';
 
@@ -10,7 +10,7 @@ beforeAll(() => {
   });
 });
 
-const matchConfig = [{any: ['*.txt']}];
+const matchConfig: MatchConfig[] = [{any: ['*.txt']}];
 
 describe('checkGlobs', () => {
   it('returns true when our pattern does match changed files', () => {
@@ -26,4 +26,24 @@ describe('checkGlobs', () => {
 
     expect(result).toBeFalsy();
   });
+
+  it('returns true when PR author is in the list of authors', () => {
+    const matchConfigWithAuthor: MatchConfig[] = [
+      {any: ['*.txt'], authors: ['monalisa', 'hubot']}
+    ];
+    const changedFiles = ['foo.txt'];
+
+    const result = checkGlobs(changedFiles, matchConfigWithAuthor);
+    expect(result).toBeTruthy();
+  });
+
+  it('returns false when PR author is not in the list of authors', () => {
+    const matchConfigWithAuthor: MatchConfig[] = [
+      {any: ['*.txt'], authors: ['foo', 'bar']}
+    ];
+    const changedFiles = ['foo.txt'];
+
+    const result = checkGlobs(changedFiles, matchConfigWithAuthor);
+    expect(result).toBeFalsy();
+  });
 });

dist/index.js

@@ -96,6 +96,13 @@ function getPrNumber() {
     }
     return pullRequest.number;
 }
+function getPrAuthor() {
+    const pullRequest = github.context.payload.pull_request;
+    if (!pullRequest) {
+        return undefined;
+    }
+    return pullRequest.user.login;
+}
 function getChangedFiles(client, prNumber) {
     return __awaiter(this, void 0, void 0, function* () {
         const listFilesOptions = client.rest.pulls.listFiles.endpoint.merge({
@@ -207,6 +214,19 @@ function checkAll(changedFiles, globs) {
     core.debug(`  "all" patterns matched all files`);
     return true;
 }
+function checkAuthors(authors) {
+    const prAuthor = getPrAuthor();
+    if (!prAuthor) {
+        core.info('Could not get pull request author from context, exiting');
+        return false;
+    }
+    if (authors.includes(prAuthor)) {
+        core.debug(`  author ${prAuthor} is on the list`);
+        return true;
+    }
+    core.debug(`  author ${prAuthor} is not on the list`);
+    return false;
+}
 function checkMatch(changedFiles, matchConfig) {
     if (matchConfig.all !== undefined) {
         if (!checkAll(changedFiles, matchConfig.all)) {
@@ -218,6 +238,11 @@ function checkMatch(changedFiles, matchConfig) {
             return false;
         }
     }
+    if (matchConfig.authors !== undefined) {
+        if (!checkAuthors(matchConfig.authors)) {
+            return false;
+        }
+    }
     return true;
 }
 function addLabels(client, prNumber, labels) {

src/labeler.ts

@@ -3,9 +3,10 @@ import * as github from '@actions/github';
 import * as yaml from 'js-yaml';
 import {Minimatch} from 'minimatch';
 
-interface MatchConfig {
+export interface MatchConfig {
   all?: string[];
   any?: string[];
+  authors?: string[];
 }
 
 type StringOrMatchConfig = string | MatchConfig;
@@ -71,6 +72,14 @@ function getPrNumber(): number | undefined {
   return pullRequest.number;
 }
 
+function getPrAuthor(): string | undefined {
+  const pullRequest = github.context.payload.pull_request;
+  if (!pullRequest) {
+    return undefined;
+  }
+  return pullRequest.user.login;
+}
+
 async function getChangedFiles(
   client: ClientType,
   prNumber: number
@@ -213,6 +222,22 @@ function checkAll(changedFiles: string[], globs: string[]): boolean {
   return true;
 }
 
+function checkAuthors(authors: string[]): boolean {
+  const prAuthor = getPrAuthor();
+  if (!prAuthor) {
+    core.info('Could not get pull request author from context, exiting');
+    return false;
+  }
+
+  if (authors.includes(prAuthor)) {
+    core.debug(`  author ${prAuthor} is on the list`);
+    return true;
+  }
+
+  core.debug(`  author ${prAuthor} is not on the list`);
+  return false;
+}
+
 function checkMatch(changedFiles: string[], matchConfig: MatchConfig): boolean {
   if (matchConfig.all !== undefined) {
     if (!checkAll(changedFiles, matchConfig.all)) {
@@ -226,6 +251,12 @@ function checkMatch(changedFiles: string[], matchConfig: MatchConfig): boolean {
     }
   }
 
+  if (matchConfig.authors !== undefined) {
+    if (!checkAuthors(matchConfig.authors)) {
+      return false;
+    }
+  }
+
   return true;
 }