[+] DevOps - Automatically send the release note on Slack after a release.

Author: arnaudbesnier

.env-example

@@ -0,0 +1,2 @@
+DEVOPS_SLACK_CHANNEL=
+DEVOPS_SLACK_TOKEN=

.gitignore

@@ -40,3 +40,4 @@ build/
 .rvmrc
 
 node_modules/
+.env

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [Unreleased]
 ### Added
 - Configurations - Users can specify the directory for Forest Smart Implementation.
+- DevOps - Automatically send the release note on Slack after a release.
 
 ### Changed
 - Readme - Add a community section.

gulpfile.js

@@ -1,13 +1,13 @@
 {
   "name": "forest-rails",
-  "version": "0.0.0",
+  "version": "3.2.0",
   "description": "The official Rails liana for Forest.",
-  "main": "gulpfile.js",
   "directories": {
     "test": "test"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "release": "node ./scripts/release.js"
   },
   "repository": {
     "type": "git",
@@ -20,9 +20,10 @@
   },
   "homepage": "https://github.com/ForestAdmin/forest-rails#readme",
   "devDependencies": {
-    "gulp": "3.9.1",
+    "@forestadmin/devops": "2.0.0",
+    "dotenv": "8.1.0",
     "moment": "^2.20.1",
     "semver": "5.3.0",
-    "simple-git": "1.65.0"
+    "simple-git": "1.78.0"
   }
 }

package.json

@@ -0,0 +1,133 @@
+'use strict';
+require('dotenv').config();
+const moment = require('moment');
+const fs = require('fs');
+const simpleGit = require('simple-git')();
+const semver = require('semver');
+const exec = require('child_process').execSync;
+const { ReleaseNoteManager } = require('@forestadmin/devops');
+
+const { DEVOPS_SLACK_TOKEN, DEVOPS_SLACK_CHANNEL } = process.env;
+const OPTIONS = { releaseIcon: '🌱', withVersion: true };
+
+const BRANCH_MASTER = 'master';
+const BRANCH_DEVEL = 'devel';
+const PRERELEASE_OPTIONS = ['premajor', 'preminor', 'prepatch', 'prerelease'];
+const RELEASE_OPTIONS = ['major', 'minor', 'patch', ...PRERELEASE_OPTIONS];
+
+function build() {
+  const parseCommandLineArguments = () => {
+    let releaseType = 'patch';
+    let prereleaseTag;
+
+    if (process.argv) {
+      if (process.argv[2]) {
+        const option = process.argv[2].replace('--', '');
+        if (RELEASE_OPTIONS.includes(option)) {
+          releaseType = option;
+        }
+      }
+      if (process.argv[3]) {
+        const option = process.argv[3].replace('--', '');
+        prereleaseTag = option;
+      } else if (PRERELEASE_OPTIONS.includes(releaseType)) {
+        prereleaseTag = 'beta';
+      }
+    }
+
+    return { releaseType, prereleaseTag };
+  };
+
+  const gitPullErrorCatcher = (error) => {
+    if (error) {
+      throw new Error('Git Pull Error');
+    }
+  };
+
+  const getBranchLabel = (branchName) => branchName || 'current branch';
+
+  const pullAndCommitChanges = async (newPackageFile, newVersionFile, newChanges, commitMessage, branchName) => {
+    if (branchName) {
+      await simpleGit.checkout(branchName);
+    }
+
+    return simpleGit
+      .pull(gitPullErrorCatcher)
+      .exec(() => { console.log(`Pull ${getBranchLabel(branchName)} done.`); })
+      .exec(() => {
+        fs.writeFileSync('lib/forest_liana/version.rb', newVersionFile);
+        fs.writeFileSync('package.json', newPackageFile);
+        fs.writeFileSync('CHANGELOG.md', newChanges);
+      })
+      .add(['CHANGELOG.md', 'package.json'])
+      .commit(commitMessage)
+      .push()
+      .exec(() => { console.log(`Commit Release on ${getBranchLabel(branchName)} done.`); });
+  };
+
+  const addTagToGit = (tag, branchName) => simpleGit
+    .addTag(tag)
+    .push('origin', tag)
+    .exec(() => { console.log(`Tag ${tag} on ${getBranchLabel(branchName)} done.`); });
+
+  const mergeDevelOntoMaster = () => simpleGit
+    .checkout(BRANCH_MASTER)
+    .pull(gitPullErrorCatcher)
+    .exec(() => { console.log(`Pull ${BRANCH_MASTER} done.`); })
+    .mergeFromTo(BRANCH_DEVEL, BRANCH_MASTER)
+    .exec(() => { console.log(`Merge ${BRANCH_DEVEL} on ${BRANCH_MASTER} done.`); })
+    .push();
+
+  let releaseType = 'patch';
+  let prereleaseTag;
+
+  ({ releaseType, prereleaseTag } = parseCommandLineArguments());
+
+  // VERSION (version.rb)
+  let versionFile = fs.readFileSync('lib/forest_liana/version.rb').toString().split('\n');
+  let version = versionFile[1].match(/\w*VERSION = "(.*)"/)[1];
+  version = semver.inc(version, releaseType, prereleaseTag);
+  versionFile[1] = `  VERSION = "${version}"`;
+  const newVersionFile = versionFile.join('\n');
+
+  // VERSION (package.json)
+  const packageContents = fs.readFileSync('./package.json', 'utf8');
+  const packageJson = JSON.parse(packageContents);
+  packageJson.version = version;
+  const newPackageFile = JSON.stringify(packageJson, null, 2);
+
+  // CHANGELOG
+  const changes = fs.readFileSync('CHANGELOG.md').toString().split('\n');
+  const today = moment().format('YYYY-MM-DD');
+
+  const index = changes.indexOf('## [Unreleased]') + 1;
+  changes.splice(index, 0, `\n## RELEASE ${version} - ${today}`);
+  const newChanges = changes.join('\n');
+
+  const commitMessage = `Release ${version}`;
+  const tag = `v${version}`;
+
+  return new Promise((resolve) => {
+    simpleGit.status((_, statusSummary) => {
+      const currentBranch = statusSummary.current;
+
+      let promise;
+      if (prereleaseTag || /v\d+(\.\d+)?/i.test(currentBranch)) {
+        promise = pullAndCommitChanges(newPackageFile, newVersionFile, newChanges, commitMessage, currentBranch)
+          .then(() => addTagToGit(tag, currentBranch));
+      } else {
+        promise = pullAndCommitChanges(newPackageFile, newVersionFile, newChanges, commitMessage, BRANCH_DEVEL)
+          .then(() => mergeDevelOntoMaster())
+          .then(() => addTagToGit(tag, BRANCH_MASTER))
+          .then(() => simpleGit.checkout(BRANCH_DEVEL));
+      }
+
+      promise.catch(() => {});
+
+      resolve(promise);
+    });
+  });
+}
+
+return build()
+  .then(() => new ReleaseNoteManager(DEVOPS_SLACK_TOKEN, DEVOPS_SLACK_CHANNEL, OPTIONS).create())