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chore: add prepare-release.yml workflow
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‎.github/workflows/prepare-release.yml‎

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name: Prepare Release 1.x
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on:
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workflow_dispatch:
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inputs:
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release_version:
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description: "Release version (format: 1.X.Y)"
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required: false
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default: ""
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type: string
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swagger_codegen_version:
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description: "swagger-codegen release version to pin (e.g. 3.0.79)"
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required: true
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type: string
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permissions:
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contents: write
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pull-requests: write
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jobs:
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prepare:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v6
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with:
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ref: master
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fetch-depth: 0
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- name: Set up Java 17
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uses: actions/setup-java@v5
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with:
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java-version: "17"
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distribution: temurin
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cache: maven
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overwrite-settings: false
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- name: Add Central-Portal snapshot repo to settings.xml
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uses: s4u/maven-settings-action@v4.0.0
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with:
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repositories: '[{"id":"central-portal-snapshots","name":"Sonatype Central Portal snapshots","url":"https://central.sonatype.com/repository/maven-snapshots/","releases":{"enabled":false},"snapshots":{"enabled":true}}]'
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servers: '[{"id":"central","username":"${{ secrets.MAVEN_CENTRAL_USERNAME }}","password":"${{ secrets.MAVEN_CENTRAL_PASSWORD }}"}]'
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- name: Resolve and validate inputs
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id: resolve
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run: |
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set -euo pipefail
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POM_VERSION="$(mvn -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:1.3.1:exec)"
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POM_RELEASE_VERSION="${POM_VERSION%-SNAPSHOT}"
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RELEASE_VERSION="${{ inputs.release_version }}"
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if [ -z "${RELEASE_VERSION}" ]; then
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RELEASE_VERSION="${POM_RELEASE_VERSION}"
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fi
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if [[ ! "$RELEASE_VERSION" =~ ^1\.[0-9]+\.[0-9]+$ ]]; then
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echo "release_version must match 1.X.Y"
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exit 1
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fi
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SWAGGER_CODEGEN_VERSION="${{ inputs.swagger_codegen_version }}"
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if [[ "$SWAGGER_CODEGEN_VERSION" =~ SNAPSHOT$ ]]; then
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echo "Release dependency versions must not be SNAPSHOT: $SWAGGER_CODEGEN_VERSION"
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exit 1
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fi
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echo "release_version=${RELEASE_VERSION}" >> "$GITHUB_OUTPUT"
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echo "swagger_codegen_version=${SWAGGER_CODEGEN_VERSION}" >> "$GITHUB_OUTPUT"
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- name: Update versions
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run: |
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set -euo pipefail
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RELEASE_VERSION="${{ steps.resolve.outputs.release_version }}"
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SWAGGER_CODEGEN_VERSION="${{ steps.resolve.outputs.swagger_codegen_version }}"
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mvn -q -B versions:set -DnewVersion="${RELEASE_VERSION}" -DgenerateBackupPoms=false
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if [ -n "${SWAGGER_CODEGEN_VERSION}" ]; then
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mvn -q -B versions:set-property -Dproperty=swagger-codegen-version -DnewVersion="${SWAGGER_CODEGEN_VERSION}" -DgenerateBackupPoms=false
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fi
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- name: Build release candidate
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run: |
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set -euo pipefail
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CODEGEN_VERSION="${{ steps.resolve.outputs.swagger_codegen_version }}"
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CODEGEN_MAJOR="${CODEGEN_VERSION%%.*}"
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CODEGEN_VERSION_PROPERTY=""
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CODEGEN_FOUND_JSON="$(curl -s --max-time 60 --retry 15 --connect-timeout 20 "https://central.sonatype.com/solrsearch/select?q=g:io.swagger.codegen.v3%20AND%20a:swagger-codegen%20AND%20v:${CODEGEN_VERSION}%20AND%20p:jar")"
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CODEGEN_FOUND="$(echo "${CODEGEN_FOUND_JSON}" | jq '.response.numFound')"
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if [[ "${CODEGEN_FOUND}" == "0" ]]; then
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SNAP_API="https://central.sonatype.com/repository/maven-snapshots"
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ARTIFACT_PATH="io/swagger/codegen/v3/swagger-codegen"
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ROOT_META="${SNAP_API}/${ARTIFACT_PATH}/maven-metadata.xml"
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LAST_SNAP="$(curl -s "$ROOT_META" | grep -oP "(?<=<version>)${CODEGEN_MAJOR}\.[^<]+" | sort -V | tail -n1)"
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CODEGEN_VERSION_PROPERTY="-Dswagger-codegen-version=${LAST_SNAP}"
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fi
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./mvnw clean verify -U ${CODEGEN_VERSION_PROPERTY}
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- name: Prepare draft release notes body
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id: notes
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run: |
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set -euo pipefail
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RELEASE_VERSION="${{ steps.resolve.outputs.release_version }}"
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LAST_TAG_VERSION="$(
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{
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git tag -l 'v1.*' | sed 's/^v//'
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echo "${RELEASE_VERSION}"
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} \
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| grep -E '^1\.[0-9]+\.[0-9]+$' \
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| sort -V \
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| awk -v rel="${RELEASE_VERSION}" '
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$0 == rel { print prev; found=1; exit }
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{ prev=$0 }
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END { if (!found) exit 1 }
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'
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)"
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if [ -z "${LAST_TAG_VERSION}" ]; then
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echo "No previous v1.* tag found before ${RELEASE_VERSION}"
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exit 1
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fi
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LAST_TAG="v${LAST_TAG_VERSION}"
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RELEASE_TAG="v${{ steps.resolve.outputs.release_version }}"
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NOTES_FILE="${RUNNER_TEMP}/release-notes-${RELEASE_TAG}.md"
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{
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echo "## ${RELEASE_TAG}"
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echo
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echo "### Notable Changes"
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git log \
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--first-parent \
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--pretty='- %s (%h)' \
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--invert-grep \
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--grep='^chore: prepare release ' \
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--grep='^chore: bump snapshot to ' \
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"${LAST_TAG}..HEAD"
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echo
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echo "### Full Changelog"
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echo "- Compare: ${LAST_TAG}...${RELEASE_TAG}"
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} > "${NOTES_FILE}"
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echo "notes_file=${NOTES_FILE}" >> "$GITHUB_OUTPUT"
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- name: Create or update draft GitHub release
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uses: ncipollo/release-action@v1
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with:
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allowUpdates: true
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bodyFile: ${{ steps.notes.outputs.notes_file }}
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commit: master
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draft: true
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name: v${{ steps.resolve.outputs.release_version }}
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tag: v${{ steps.resolve.outputs.release_version }}
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token: ${{ secrets.GITHUB_TOKEN }}
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- name: Commit release prep
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run: |
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set -euo pipefail
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BRANCH="prepare-release-${{ steps.resolve.outputs.release_version }}"
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RELEASE_VERSION="${{ steps.resolve.outputs.release_version }}"
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SWAGGER_CODEGEN_VERSION="${{ steps.resolve.outputs.swagger_codegen_version }}"
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git config user.name "github-actions[bot]"
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git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
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git fetch origin "${BRANCH}" || true
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if git show-ref --verify --quiet "refs/remotes/origin/${BRANCH}"; then
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git checkout -B "${BRANCH}" "origin/${BRANCH}"
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git reset --hard "${GITHUB_SHA}"
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else
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git checkout -B "${BRANCH}"
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fi
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mvn -q -B versions:set -DnewVersion="${RELEASE_VERSION}" -DgenerateBackupPoms=false
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if [ -n "${SWAGGER_CODEGEN_VERSION}" ]; then
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mvn -q -B versions:set-property -Dproperty=swagger-codegen-version -DnewVersion="${SWAGGER_CODEGEN_VERSION}" -DgenerateBackupPoms=false
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fi
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git add pom.xml
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if git diff --cached --quiet; then
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echo "No pom.xml changes to commit."
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else
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git commit -m "chore: prepare release ${RELEASE_VERSION}"
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fi
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git push --force-with-lease origin "${BRANCH}"
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- name: Create or update pull request
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env:
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GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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run: |
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set -euo pipefail
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BRANCH="prepare-release-${{ steps.resolve.outputs.release_version }}"
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TITLE="chore: prepare release ${{ steps.resolve.outputs.release_version }}"
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BODY="Prepare release ${{ steps.resolve.outputs.release_version }} and draft notes."
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EXISTING="$(gh pr list --base master --head "${BRANCH}" --state open --json number --jq '.[0].number' || true)"
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if [ -n "${EXISTING}" ]; then
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echo "PR #${EXISTING} already exists; updating title and body."
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gh pr edit "${EXISTING}" --title "${TITLE}" --body "${BODY}"
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else
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gh pr create --base master --head "${BRANCH}" --title "${TITLE}" --body "${BODY}"
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fi

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