From 1afd9390e3b8ad2075e7735d6db9ae1d97bcdf1e Mon Sep 17 00:00:00 2001
From: Joel Alphonso <joel@locomotive.ca>
Date: Mon, 6 Jun 2022 21:22:25 -0400
Subject: [PATCH] feat(pr): create a release script that outputs conventional
 changes for a range of commits/branches

---
 .github/workflows/create-pull-request.yaml |  6 +-
 create-release-notes                       | 79 ++++++++++++++++++++++
 package-lock.json                          |  4 ++
 package.json                               |  1 +
 4 files changed, 87 insertions(+), 3 deletions(-)
 create mode 100755 create-release-notes

diff --git a/.github/workflows/create-pull-request.yaml b/.github/workflows/create-pull-request.yaml
index 5d755c12d..ade193325 100644
--- a/.github/workflows/create-pull-request.yaml
+++ b/.github/workflows/create-pull-request.yaml
@@ -23,8 +23,8 @@ jobs:
             -   name: Checkout project
                 uses: actions/checkout@v3
                 with:
-                    persist-credentials: false
                     fetch-depth: 0
+                    persist-credentials: false
 
             -   uses: bahmutov/npm-install@v1
 
@@ -40,7 +40,7 @@ jobs:
             -   name: Exrtact changelog
                 shell: bash
                 run: |
-                    CHANGELOG=$(npx conventional-changelog --config conventional-changelog-pr.json)
+                    CHANGELOG=$(./create-release-notes --from ${{ github.event.inputs.base }} --group)
                     CHANGELOG="${CHANGELOG//'%'/'%25'}"
                     CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
                     CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
@@ -58,7 +58,7 @@ jobs:
                         # Merge ${{ steps.extract_branch.outputs.branch }} into ${{ github.event.inputs.base }}
                         ${{ steps.extract_changelog.outputs.changelog }}
                     pr_reviewer: "@locomotive-charcoal/reviewers"    # Comma-separated list (no spaces)
-                    # pr_assignee: ${{ github.event.inputs.user_name }}   # Comma-separated list (no spaces)
+                    pr_assignee: "${{ github.event.inputs.user_name }}"   # Comma-separated list (no spaces)
                     pr_label: release,automatic-pr                 # Comma-separated list (no spaces)
                     pr_draft: false                                # Creates pull request as draft
                     pr_allow_empty: false                          # Creates pull request even if there are no changes
diff --git a/create-release-notes b/create-release-notes
new file mode 100755
index 000000000..9beb753f5
--- /dev/null
+++ b/create-release-notes
@@ -0,0 +1,79 @@
+#!/usr/bin/env node
+'use strict'
+
+const conventionalChangelog = require('conventional-changelog')
+const resolve = require('path').resolve
+const _ = require('lodash')
+const meow = require('meow')
+
+const cli = meow(`
+    Usage
+      create-release-notes
+
+    Example
+      create-release-notes --from beta --to HEAD
+
+    Options
+      -g  --group               Group all messages under the same group. Needs to
+      -f, --from                Commit or branch to start from when processing the release notes
+      -t, --to                  Commit or branch to end to when processing the release notes
+      -n, --config              A filepath of your config script
+                                Example of a config script: https://github.com/conventional-changelog/conventional-changelog/blob/master/packages/conventional-changelog-cli/test/fixtures/config.js
+`, {
+    booleanDefault: undefined,
+    flags: {
+        config: {
+            alias: 'n',
+            type: 'string'
+        },
+        group: {
+            alias: 'g',
+            type: 'boolean'
+        },
+        from: {
+            type: 'string'
+        },
+        to: {
+            type: 'string'
+        },
+    }
+})
+
+let config;
+const flags = cli.flags
+let options = {};
+
+if (flags.group) {
+    options.tagPrefix = 'null' // This allows us to igonre tags when generating release notes, this way we get all the changes in a single grouped release block.
+}
+
+if (flags.config) {
+    config = require(resolve(process.cwd(), flags.config))
+} else {
+    config = _.merge(config, {
+        writerOpts: {
+            headerPartial: '## Changes : '
+        },
+        options: {
+            preset: {
+                name: 'conventionalcommits'
+            }
+        }
+    })
+}
+
+options.config = config
+options = _.merge(options, config.options)
+
+const gitRawCommitsOpts = _.merge({}, config.gitRawCommitsOpts || {})
+
+if (flags.from) {
+    gitRawCommitsOpts.from = flags.from
+}
+
+if (flags.to) {
+    gitRawCommitsOpts.to = flags.to
+}
+
+conventionalChangelog(options, {}, gitRawCommitsOpts, config.parserOpts, config.writerOpts)
+    .pipe(process.stdout); // or any writable stream
diff --git a/package-lock.json b/package-lock.json
index 08b8859f7..7f7f8a5e2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,9 +4,13 @@
     "requires": true,
     "packages": {
         "": {
+            "bin": {
+                "create-release-note": "create-release-notes.js"
+            },
             "devDependencies": {
                 "@semantic-release/changelog": "^6.0.1",
                 "@semantic-release/exec": "^6.0.3",
+                "conventional-changelog": "^3.1.25",
                 "conventional-changelog-cli": "^2.2.2",
                 "conventional-changelog-conventionalcommits": "^5.0.0",
                 "cz-conventional-changelog": "^3.3.0",
diff --git a/package.json b/package.json
index 108c81589..4fd85c539 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
     "devDependencies": {
         "@semantic-release/changelog": "^6.0.1",
         "@semantic-release/exec": "^6.0.3",
+        "conventional-changelog": "^3.1.25",
         "conventional-changelog-cli": "^2.2.2",
         "conventional-changelog-conventionalcommits": "^5.0.0",
         "cz-conventional-changelog": "^3.3.0",