enable to add label by title

Author: Naka Masato

dist/index.js

@@ -14545,17 +14545,31 @@ function run() {
                 console.log("Could not get pull request number from context, exiting");
                 return;
             }
+            const prTitle = getPrTitle();
+            core.info(`prTitle: ${prTitle}`);
             const client = new github.GitHub(token);
             const { data: pullRequest } = yield client.pulls.get({
                 owner: github.context.repo.owner,
                 repo: github.context.repo.repo,
                 pull_number: prNumber
             });
+            const labels = [];
+            const labelsToRemove = [];
+            // add label based on title
+            const labelTitleRegex = yield getLabelTitleRegex(client, configPath);
+            for (const [label, regexs] of labelTitleRegex.entries()) {
+                core.debug(`processing ${label}`);
+                if (checkRegexs(prTitle, regexs)) {
+                    labels.push(label);
+                }
+                else if (pullRequest.labels.find(l => l.name === label)) {
+                    labelsToRemove.push(label);
+                }
+            }
+            // add label based on changed files
             core.debug(`fetching changed files for pr #${prNumber}`);
             const changedFiles = yield getChangedFiles(client, prNumber);
             const labelGlobs = yield getLabelGlobs(client, configPath);
-            const labels = [];
-            const labelsToRemove = [];
             for (const [label, globs] of labelGlobs.entries()) {
                 core.debug(`processing ${label}`);
                 if (checkGlobs(changedFiles, globs)) {
@@ -14585,6 +14599,13 @@ function getPrNumber() {
     }
     return pullRequest.number;
 }
+function getPrTitle() {
+    const pullRequest = github.context.payload.pull_request;
+    if (!pullRequest) {
+        return '';
+    }
+    return pullRequest.title;
+}
 function getChangedFiles(client, prNumber) {
     return __awaiter(this, void 0, void 0, function* () {
         const listFilesOptions = client.pulls.listFiles.endpoint.merge({
@@ -14623,19 +14644,53 @@ function fetchContent(client, repoPath) {
 }
 function getLabelGlobMapFromObject(configObject) {
     const labelGlobs = new Map();
-    for (const label in configObject) {
-        if (typeof configObject[label] === "string") {
-            labelGlobs.set(label, [configObject[label]]);
-        }
-        else if (configObject[label] instanceof Array) {
-            labelGlobs.set(label, configObject[label]);
-        }
-        else {
-            throw Error(`found unexpected type for label ${label} (should be string or array of globs)`);
+    for (const configType in configObject) {
+        if (configType == "changed_file") {
+            for (const label in configObject["changed_file"]) {
+                const val = configObject["changed_file"][label];
+                if (typeof val === "string") {
+                    labelGlobs.set(label, [val]);
+                }
+                else if (val instanceof Array) {
+                    labelGlobs.set(label, val);
+                }
+                else {
+                    throw Error(`found unexpected type for label ${label} (should be string or array of globs)`);
+                }
+            }
         }
     }
     return labelGlobs;
 }
+function getLabelTitleRegex(client, configurationPath) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const configurationContent = yield fetchContent(client, configurationPath);
+        // loads (hopefully) a `{[label:string]: string | StringOrMatchConfig[]}`, but is `any`:
+        const configObject = yaml.safeLoad(configurationContent);
+        // transform `any` => `Map<string,RegExp[]>` or throw if yaml is malformed:
+        return getLabelTitleRegexMapFromObject(configObject);
+    });
+}
+function getLabelTitleRegexMapFromObject(configObject) {
+    const titleRegexs = new Map();
+    for (const configType in configObject) {
+        if (configType == "title") {
+            for (const label in configObject["title"]) {
+                const val = configObject["title"][label];
+                if (typeof val === "string") {
+                    titleRegexs.set(label, [new RegExp(val, 'i')]);
+                }
+                else if (val instanceof Array) {
+                    titleRegexs.set(label, val.map(regexStr => new RegExp(regexStr, 'i')));
+                }
+                else {
+                    throw Error(`found unexpected type for label ${label} (should be string or array of regex)`);
+                }
+            }
+        }
+    }
+    return titleRegexs;
+}
 function toMatchConfig(config) {
     if (typeof config === "string") {
         return {
@@ -14657,6 +14712,14 @@ function checkGlobs(changedFiles, globs) {
     }
     return false;
 }
+function checkRegexs(prTitle, regexs) {
+    for (const regex of regexs) {
+        if (regex.test(prTitle)) {
+            return true;
+        }
+    }
+    return false;
+}
 function isMatch(changedFile, matchers) {
     core.debug(`    matching patterns against file ${changedFile}`);
     for (const matcher of matchers) {
@@ -29691,7 +29754,7 @@ module.exports = new Schema({
 /***/ 954:
 /***/ (function(module) {
 
-module.exports = {"_args":[["@octokit/[email protected]","/Users/dakale/dev/GitHub/actions/labeler"]],"_from":"@octokit/[email protected]","_id":"@octokit/[email protected]","_inBundle":false,"_integrity":"sha512-gfFKwRT/wFxq5qlNjnW2dh+qh74XgTQ2B179UX5K1HYCluioWj8Ndbgqw2PVqa1NnVJkGHp2ovMpVn/DImlmkw==","_location":"/@octokit/rest","_phantomChildren":{"@octokit/types":"2.14.0","deprecation":"2.3.1","once":"1.4.0","os-name":"3.1.0"},"_requested":{"type":"version","registry":true,"raw":"@octokit/[email protected]","name":"@octokit/rest","escapedName":"@octokit%2frest","scope":"@octokit","rawSpec":"16.43.1","saveSpec":null,"fetchSpec":"16.43.1"},"_requiredBy":["/@actions/github"],"_resolved":"https://registry.npmjs.org/@octokit/rest/-/rest-16.43.1.tgz","_spec":"16.43.1","_where":"/Users/dakale/dev/GitHub/actions/labeler","author":{"name":"Gregor Martynus","url":"https://github.com/gr2m"},"bugs":{"url":"https://github.com/octokit/rest.js/issues"},"bundlesize":[{"path":"./dist/octokit-rest.min.js.gz","maxSize":"33 kB"}],"contributors":[{"name":"Mike de Boer","email":"[email protected]"},{"name":"Fabian Jakobs","email":"[email protected]"},{"name":"Joe Gallo","email":"[email protected]"},{"name":"Gregor Martynus","url":"https://github.com/gr2m"}],"dependencies":{"@octokit/auth-token":"^2.4.0","@octokit/plugin-paginate-rest":"^1.1.1","@octokit/plugin-request-log":"^1.0.0","@octokit/plugin-rest-endpoint-methods":"2.4.0","@octokit/request":"^5.2.0","@octokit/request-error":"^1.0.2","atob-lite":"^2.0.0","before-after-hook":"^2.0.0","btoa-lite":"^1.0.0","deprecation":"^2.0.0","lodash.get":"^4.4.2","lodash.set":"^4.3.2","lodash.uniq":"^4.5.0","octokit-pagination-methods":"^1.1.0","once":"^1.4.0","universal-user-agent":"^4.0.0"},"description":"GitHub REST API client for Node.js","devDependencies":{"@gimenete/type-writer":"^0.1.3","@octokit/auth":"^1.1.1","@octokit/fixtures-server":"^5.0.6","@octokit/graphql":"^4.2.0","@types/node":"^13.1.0","bundlesize":"^0.18.0","chai":"^4.1.2","compression-webpack-plugin":"^3.1.0","cypress":"^3.0.0","glob":"^7.1.2","http-proxy-agent":"^4.0.0","lodash.camelcase":"^4.3.0","lodash.merge":"^4.6.1","lodash.upperfirst":"^4.3.1","lolex":"^5.1.2","mkdirp":"^1.0.0","mocha":"^7.0.1","mustache":"^4.0.0","nock":"^11.3.3","npm-run-all":"^4.1.2","nyc":"^15.0.0","prettier":"^1.14.2","proxy":"^1.0.0","semantic-release":"^17.0.0","sinon":"^8.0.0","sinon-chai":"^3.0.0","sort-keys":"^4.0.0","string-to-arraybuffer":"^1.0.0","string-to-jsdoc-comment":"^1.0.0","typescript":"^3.3.1","webpack":"^4.0.0","webpack-bundle-analyzer":"^3.0.0","webpack-cli":"^3.0.0"},"files":["index.js","index.d.ts","lib","plugins"],"homepage":"https://github.com/octokit/rest.js#readme","keywords":["octokit","github","rest","api-client"],"license":"MIT","name":"@octokit/rest","nyc":{"ignore":["test"]},"publishConfig":{"access":"public"},"release":{"publish":["@semantic-release/npm",{"path":"@semantic-release/github","assets":["dist/*","!dist/*.map.gz"]}]},"repository":{"type":"git","url":"git+https://github.com/octokit/rest.js.git"},"scripts":{"build":"npm-run-all build:*","build:browser":"npm-run-all build:browser:*","build:browser:development":"webpack --mode development --entry . --output-library=Octokit --output=./dist/octokit-rest.js --profile --json > dist/bundle-stats.json","build:browser:production":"webpack --mode production --entry . --plugin=compression-webpack-plugin --output-library=Octokit --output-path=./dist --output-filename=octokit-rest.min.js --devtool source-map","build:ts":"npm run -s update-endpoints:typescript","coverage":"nyc report --reporter=html && open coverage/index.html","generate-bundle-report":"webpack-bundle-analyzer dist/bundle-stats.json --mode=static --no-open --report dist/bundle-report.html","lint":"prettier --check '{lib,plugins,scripts,test}/**/*.{js,json,ts}' 'docs/*.{js,json}' 'docs/src/**/*' index.js README.md package.json","lint:fix":"prettier --write '{lib,plugins,scripts,test}/**/*.{js,json,ts}' 'docs/*.{js,json}' 'docs/src/**/*' index.js README.md package.json","postvalidate:ts":"tsc --noEmit --target es6 test/typescript-validate.ts","prebuild:browser":"mkdirp dist/","pretest":"npm run -s lint","prevalidate:ts":"npm run -s build:ts","start-fixtures-server":"octokit-fixtures-server","test":"nyc mocha test/mocha-node-setup.js \"test/*/**/*-test.js\"","test:browser":"cypress run --browser chrome","update-endpoints":"npm-run-all update-endpoints:*","update-endpoints:fetch-json":"node scripts/update-endpoints/fetch-json","update-endpoints:typescript":"node scripts/update-endpoints/typescript","validate:ts":"tsc --target es6 --noImplicitAny index.d.ts"},"types":"index.d.ts","version":"16.43.1"};
+module.exports = {"_args":[["@octokit/[email protected]","/Users/masato-naka/repos/MasatoNaka/labeler"]],"_from":"@octokit/[email protected]","_id":"@octokit/[email protected]","_inBundle":false,"_integrity":"sha512-gfFKwRT/wFxq5qlNjnW2dh+qh74XgTQ2B179UX5K1HYCluioWj8Ndbgqw2PVqa1NnVJkGHp2ovMpVn/DImlmkw==","_location":"/@octokit/rest","_phantomChildren":{"@octokit/types":"2.14.0","deprecation":"2.3.1","once":"1.4.0","os-name":"3.1.0"},"_requested":{"type":"version","registry":true,"raw":"@octokit/[email protected]","name":"@octokit/rest","escapedName":"@octokit%2frest","scope":"@octokit","rawSpec":"16.43.1","saveSpec":null,"fetchSpec":"16.43.1"},"_requiredBy":["/@actions/github"],"_resolved":"https://registry.npmjs.org/@octokit/rest/-/rest-16.43.1.tgz","_spec":"16.43.1","_where":"/Users/masato-naka/repos/MasatoNaka/labeler","author":{"name":"Gregor Martynus","url":"https://github.com/gr2m"},"bugs":{"url":"https://github.com/octokit/rest.js/issues"},"bundlesize":[{"path":"./dist/octokit-rest.min.js.gz","maxSize":"33 kB"}],"contributors":[{"name":"Mike de Boer","email":"[email protected]"},{"name":"Fabian Jakobs","email":"[email protected]"},{"name":"Joe Gallo","email":"[email protected]"},{"name":"Gregor Martynus","url":"https://github.com/gr2m"}],"dependencies":{"@octokit/auth-token":"^2.4.0","@octokit/plugin-paginate-rest":"^1.1.1","@octokit/plugin-request-log":"^1.0.0","@octokit/plugin-rest-endpoint-methods":"2.4.0","@octokit/request":"^5.2.0","@octokit/request-error":"^1.0.2","atob-lite":"^2.0.0","before-after-hook":"^2.0.0","btoa-lite":"^1.0.0","deprecation":"^2.0.0","lodash.get":"^4.4.2","lodash.set":"^4.3.2","lodash.uniq":"^4.5.0","octokit-pagination-methods":"^1.1.0","once":"^1.4.0","universal-user-agent":"^4.0.0"},"description":"GitHub REST API client for Node.js","devDependencies":{"@gimenete/type-writer":"^0.1.3","@octokit/auth":"^1.1.1","@octokit/fixtures-server":"^5.0.6","@octokit/graphql":"^4.2.0","@types/node":"^13.1.0","bundlesize":"^0.18.0","chai":"^4.1.2","compression-webpack-plugin":"^3.1.0","cypress":"^3.0.0","glob":"^7.1.2","http-proxy-agent":"^4.0.0","lodash.camelcase":"^4.3.0","lodash.merge":"^4.6.1","lodash.upperfirst":"^4.3.1","lolex":"^5.1.2","mkdirp":"^1.0.0","mocha":"^7.0.1","mustache":"^4.0.0","nock":"^11.3.3","npm-run-all":"^4.1.2","nyc":"^15.0.0","prettier":"^1.14.2","proxy":"^1.0.0","semantic-release":"^17.0.0","sinon":"^8.0.0","sinon-chai":"^3.0.0","sort-keys":"^4.0.0","string-to-arraybuffer":"^1.0.0","string-to-jsdoc-comment":"^1.0.0","typescript":"^3.3.1","webpack":"^4.0.0","webpack-bundle-analyzer":"^3.0.0","webpack-cli":"^3.0.0"},"files":["index.js","index.d.ts","lib","plugins"],"homepage":"https://github.com/octokit/rest.js#readme","keywords":["octokit","github","rest","api-client"],"license":"MIT","name":"@octokit/rest","nyc":{"ignore":["test"]},"publishConfig":{"access":"public"},"release":{"publish":["@semantic-release/npm",{"path":"@semantic-release/github","assets":["dist/*","!dist/*.map.gz"]}]},"repository":{"type":"git","url":"git+https://github.com/octokit/rest.js.git"},"scripts":{"build":"npm-run-all build:*","build:browser":"npm-run-all build:browser:*","build:browser:development":"webpack --mode development --entry . --output-library=Octokit --output=./dist/octokit-rest.js --profile --json > dist/bundle-stats.json","build:browser:production":"webpack --mode production --entry . --plugin=compression-webpack-plugin --output-library=Octokit --output-path=./dist --output-filename=octokit-rest.min.js --devtool source-map","build:ts":"npm run -s update-endpoints:typescript","coverage":"nyc report --reporter=html && open coverage/index.html","generate-bundle-report":"webpack-bundle-analyzer dist/bundle-stats.json --mode=static --no-open --report dist/bundle-report.html","lint":"prettier --check '{lib,plugins,scripts,test}/**/*.{js,json,ts}' 'docs/*.{js,json}' 'docs/src/**/*' index.js README.md package.json","lint:fix":"prettier --write '{lib,plugins,scripts,test}/**/*.{js,json,ts}' 'docs/*.{js,json}' 'docs/src/**/*' index.js README.md package.json","postvalidate:ts":"tsc --noEmit --target es6 test/typescript-validate.ts","prebuild:browser":"mkdirp dist/","pretest":"npm run -s lint","prevalidate:ts":"npm run -s build:ts","start-fixtures-server":"octokit-fixtures-server","test":"nyc mocha test/mocha-node-setup.js \"test/*/**/*-test.js\"","test:browser":"cypress run --browser chrome","update-endpoints":"npm-run-all update-endpoints:*","update-endpoints:fetch-json":"node scripts/update-endpoints/fetch-json","update-endpoints:typescript":"node scripts/update-endpoints/typescript","validate:ts":"tsc --target es6 --noImplicitAny index.d.ts"},"types":"index.d.ts","version":"16.43.1"};
 
 /***/ }),
 

src/main.ts

@@ -22,6 +22,9 @@ async function run() {
       return;
     }
 
+    const prTitle = getPrTitle();
+    core.info(`prTitle: ${prTitle}`);
+
     const client = new github.GitHub(token);
 
     const { data: pullRequest } = await client.pulls.get({
@@ -30,15 +33,31 @@ async function run() {
       pull_number: prNumber
     });
 
+    const labels: string[] = [];
+    const labelsToRemove: string[] = [];
+
+    // add label based on title
+    const labelTitleRegex: Map<string, RegExp[]> = await getLabelTitleRegex(
+      client, 
+      configPath
+    );
+    for (const [label, regexs] of labelTitleRegex.entries()) {
+      core.debug(`processing ${label}`);
+      if (checkRegexs(prTitle, regexs)) {
+        labels.push(label);
+      } else if (pullRequest.labels.find(l => l.name === label)) {
+        labelsToRemove.push(label);
+      }
+    }
+
+    // add label based on changed files
     core.debug(`fetching changed files for pr #${prNumber}`);
     const changedFiles: string[] = await getChangedFiles(client, prNumber);
     const labelGlobs: Map<string, StringOrMatchConfig[]> = await getLabelGlobs(
       client,
       configPath
     );
 
-    const labels: string[] = [];
-    const labelsToRemove: string[] = [];
     for (const [label, globs] of labelGlobs.entries()) {
       core.debug(`processing ${label}`);
       if (checkGlobs(changedFiles, globs)) {
@@ -70,6 +89,15 @@ function getPrNumber(): number | undefined {
   return pullRequest.number;
 }
 
+function getPrTitle(): string {
+  const pullRequest = github.context.payload.pull_request;
+  if (!pullRequest) {
+    return '';
+  }
+
+  return pullRequest.title;
+}
+
 async function getChangedFiles(
   client: github.GitHub,
   prNumber: number
@@ -125,21 +153,66 @@ function getLabelGlobMapFromObject(
   configObject: any
 ): Map<string, StringOrMatchConfig[]> {
   const labelGlobs: Map<string, StringOrMatchConfig[]> = new Map();
-  for (const label in configObject) {
-    if (typeof configObject[label] === "string") {
-      labelGlobs.set(label, [configObject[label]]);
-    } else if (configObject[label] instanceof Array) {
-      labelGlobs.set(label, configObject[label]);
-    } else {
-      throw Error(
-        `found unexpected type for label ${label} (should be string or array of globs)`
-      );
+  for (const configType in configObject) {
+    if (configType == "changed_file") {
+      for (const label in configObject["changed_file"]) {
+        const val = configObject["changed_file"][label]
+        if (typeof val === "string") {
+          labelGlobs.set(label, [val]);
+        } else if (val instanceof Array) {
+          labelGlobs.set(label, val);
+        } else {
+          throw Error(
+            `found unexpected type for label ${label} (should be string or array of globs)`
+          );
+        }
+      }
     }
   }
 
   return labelGlobs;
 }
 
+async function getLabelTitleRegex(
+  client: github.GitHub,
+  configurationPath: string
+): Promise<Map<string, RegExp[]>> {
+  const configurationContent: string = await fetchContent(
+    client,
+    configurationPath
+  );
+
+  // loads (hopefully) a `{[label:string]: string | StringOrMatchConfig[]}`, but is `any`:
+  const configObject: any = yaml.safeLoad(configurationContent);
+
+  // transform `any` => `Map<string,RegExp[]>` or throw if yaml is malformed:
+  return getLabelTitleRegexMapFromObject(configObject);
+}
+
+function getLabelTitleRegexMapFromObject(
+  configObject: any
+): Map<string, RegExp[]> {
+  const titleRegexs: Map<string, RegExp[]> = new Map();
+  for (const configType in configObject) {
+    if (configType == "title") {
+      for (const label in configObject["title"]) {
+        const val = configObject["title"][label];
+        if (typeof val === "string") {
+          titleRegexs.set(label, [new RegExp(val, 'i')]);
+        } else if (val instanceof Array) {
+          titleRegexs.set(label, val.map(regexStr => new RegExp(regexStr, 'i')) );
+        } else {
+          throw Error(
+            `found unexpected type for label ${label} (should be string or array of regex)`
+          );
+        }
+      }
+    }
+  }
+
+  return titleRegexs;
+}
+
 function toMatchConfig(config: StringOrMatchConfig): MatchConfig {
   if (typeof config === "string") {
     return {
@@ -168,6 +241,18 @@ function checkGlobs(
   return false;
 }
 
+function checkRegexs(
+  prTitle: string,
+  regexs: RegExp[]
+): boolean {
+  for (const regex of regexs) {
+    if (regex.test(prTitle)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 function isMatch(changedFile: string, matchers: IMinimatch[]): boolean {
   core.debug(`    matching patterns against file ${changedFile}`);
   for (const matcher of matchers) {