github-deploy/.github/workflows/ci-create-release-pr.yaml at main · AlexF4Dev/github-deploy · GitHub

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###############################################################################
# GitOps Release PR Creator (Reusable Workflow) — Demo
#
# Called by ci-pr-trigger.yaml. Compares new image tags against current
# .env file and creates/updates a PR if versions differ.
###############################################################################

name: "CI: Create release PR"

on:
  workflow_call:
    inputs:
      baseBranch:
        description: "Target branch for the PR"
        required: true
        type: string
      backendTag:
        description: "New backend image tag"
        required: false
        type: string
      frontendTag:
        description: "New frontend image tag"
        required: false
        type: string
      envPath:
        description: "Path to .env file with image tags"
        required: true
        type: string

jobs:
  create-pr:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.baseBranch }}

      - name: Read current image tags
        id: current
        run: |
          source ${{ inputs.envPath }}

          echo "currentBackendTag=${BACKEND_TAG}" >> $GITHUB_OUTPUT
          echo "currentFrontendTag=${FRONTEND_TAG}" >> $GITHUB_OUTPUT
          echo "Current backend: ${BACKEND_TAG}"
          echo "Current frontend: ${FRONTEND_TAG}"

      - name: Update image tags if changed
        id: update
        env:
          BACKEND_TAG: ${{ inputs.backendTag }}
          FRONTEND_TAG: ${{ inputs.frontendTag }}
          CURRENT_BACKEND_TAG: ${{ steps.current.outputs.currentBackendTag }}
          CURRENT_FRONTEND_TAG: ${{ steps.current.outputs.currentFrontendTag }}
          ENV_PATH: ${{ inputs.envPath }}
        run: |
          changed=false

          if [[ -n "${BACKEND_TAG}" && "${BACKEND_TAG}" != "${CURRENT_BACKEND_TAG}" ]]; then
            echo "Updating backend: ${CURRENT_BACKEND_TAG} -> ${BACKEND_TAG}"
            sed -i "s/^BACKEND_TAG=.*/BACKEND_TAG=${BACKEND_TAG}/" "${ENV_PATH}"
            changed=true
          fi

          if [[ -n "${FRONTEND_TAG}" && "${FRONTEND_TAG}" != "${CURRENT_FRONTEND_TAG}" ]]; then
            echo "Updating frontend: ${CURRENT_FRONTEND_TAG} -> ${FRONTEND_TAG}"
            sed -i "s/^FRONTEND_TAG=.*/FRONTEND_TAG=${FRONTEND_TAG}/" "${ENV_PATH}"
            changed=true
          fi

          echo "changed=${changed}" >> $GITHUB_OUTPUT

      - name: Create pull request
        id: cpr
        if: steps.update.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          branch: release/auto-update
          base: ${{ inputs.baseBranch }}
          title: "release: update images (${{ inputs.backendTag }}/${{ inputs.frontendTag }})"
          body: |
            Automated image tag update.

            | Service  | Previous | New |
            |----------|----------|-----|
            | Backend  | `${{ steps.current.outputs.currentBackendTag }}` | `${{ inputs.backendTag }}` |
            | Frontend | `${{ steps.current.outputs.currentFrontendTag }}` | `${{ inputs.frontendTag }}` |
          commit-message: "release: backend=${{ inputs.backendTag }} frontend=${{ inputs.frontendTag }}"
          delete-branch: true

      - name: Enable auto-merge
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: nick-fields/retry@v3
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          timeout_minutes: 15
          max_attempts: 30
          retry_wait_seconds: 30
          command: gh pr merge ${{ steps.cpr.outputs.pull-request-number }} --auto --squash