[AAWF-420] Update release workflow (#2874)

* update workflow

* remove extra file

* fix workflow

* fix workflow

Author: skarimo

.github/workflows/prepare_release.yml

@@ -22,76 +22,70 @@ jobs:
     steps:
       - name: Get GitHub App token
         id: get_token
-        uses: actions/create-github-app-token@v1
+        uses: actions/create-github-app-token@c1a285145b9d317df6ced56c09f525b5c2b6f755 #v1.11.1
         with:
           app-id: ${{ secrets.PIPELINE_GITHUB_APP_ID }}
           private-key: ${{ secrets.PIPELINE_GITHUB_APP_PRIVATE_KEY }}
 
-      - name: Create release
-        uses: actions/github-script@v6
-        env:
-          RELEASE_BRANCH: ${{ github.head_ref }}
-        with:
-          github-token: ${{ steps.get_token.outputs.token }}
-          script: |
-            const tagName = `datadog-api-client-${process.env.RELEASE_BRANCH.split("/")[1]}`;
-            await github.rest.git.createRef({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              ref: `refs/tags/${tagName}`,
-              sha: context.payload.pull_request.merge_commit_sha,
-            });
-            await github.rest.repos.createRelease({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              generate_release_notes: true,
-              tag_name: tagName,
-            });
-
-      - uses: actions/checkout@v3
+      - name: Checkout ${{ github.event.pull_request.base.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           token: ${{ steps.get_token.outputs.token }}
+          ref: ${{ github.event.pull_request.base.ref }}
+          fetch-depth: 0
 
-      - name: Setup Git
+      - name: Release packages
+        env:
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          GH_TOKEN: ${{ steps.get_token.outputs.token }}
+        shell: bash
         run: |
-          git config user.name "${GIT_AUTHOR_NAME}"
-          git config user.email "${GIT_AUTHOR_EMAIL}"
+          CHANGED_POM_XML_FILES=$(git diff --diff-filter=MACR --name-only $BASE_SHA...$HEAD_SHA \
+            | grep -E 'pom\.xml$' \
+            | xargs dirname \
+            | sort \
+            | uniq)
 
-      - name: Install Java
-        uses: actions/setup-java@v3
-        with:
-          java-version: "8"
-          distribution: "temurin"
-          cache: "maven"
+          declare -A versions
+          for package in $CHANGED_POM_XML_FILES; do
+            base_version=$(git show $BASE_SHA:$package/pom.xml | grep -E '<version>.*</version>' | head -n 1 | sed -E 's/.*<version>(.*)<\/version>.*/\1/')
+            head_version=$(git show $HEAD_SHA:$package/pom.xml | grep -E '<version>.*</version>' | head -n 1 | sed -E 's/.*<version>(.*)<\/version>.*/\1/')
 
-      - name: Bump version
-        run: |
-          git switch -c "${POST_RELEASE_BRANCH}"
-          mvn --batch-mode release:update-versions
-          git commit -a -m "Post release bump"
-          git push -f --set-upstream origin "${POST_RELEASE_BRANCH}"
-        env:
-          POST_RELEASE_BRANCH: post-${{ github.head_ref }}
+            if [ "$base_version" != "$head_version" ]; then
+              versions[$package]=$head_version
+            fi
+          done
 
-      - name: Create PR
-        uses: actions/github-script@v6
-        env:
-          POST_RELEASE_BRANCH: post-${{ github.head_ref }}
-          BASE: master
-        with:
-          github-token: ${{ steps.get_token.outputs.token }}
-          script: |
-            const { data: pr } = await github.rest.pulls.create({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              head: process.env.POST_RELEASE_BRANCH,
-              base: process.env.BASE,
-              title: "Post release",
-              body: "Bump to dev version",
-            });
-            await github.rest.issues.addLabels({
-              issue_number: pr.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              labels: ["changelog/no-changelog"],
-            });
+          for package in "${!versions[@]}"; do
+            echo "Releasing $package at version ${versions[$package]}"
+
+            # Build the tag name
+            if [[ "$package" == "." ]]; then
+              # If the package is the root, use the version as the tag name
+              tag_name="datadog-api-client-${versions[$package]}"
+            else
+              # If the package is not the root, use the package name and version as the tag name
+              tag_name="$package/${versions[$package]}"
+            fi
+
+            # Get the changelog entries since last release
+            # TODO: Implement this
+            # changelog_content=$(git diff $BASE_REF...$HEAD_REF -- $package/CHANGELOG.md | grep -A 1000 "^+##" | grep -v "^+++" | sed 's/^+//')
+
+            is_prerelease=$(echo $package | grep -q "beta" && echo true || echo false)
+            # Create the tag
+            gh api repos/{owner}/{repo}/git/refs \
+              -f ref="refs/tags/$tag_name" \
+              -f sha=$HEAD_SHA
+
+            # Create the release
+            gh api repos/{owner}/{repo}/releases --input - << EOF
+            {
+              "tag_name": "$tag_name",
+              "name": "$tag_name",
+              "body": "See $package/CHANGELOG.md for details",
+              "prerelease": $is_prerelease
+            }
+          EOF
+          done