deploy.yml

name: Deploy

on:
  workflow_call:
    inputs:
      ### Required
      release:
        description: 'PR number, test or prod.'
        required: true
        type: string
      
      repository:
        description: 'repository name.'
        required: false
        type: string
        default: "onroutebc"
      ### Typical / recommended
      autoscaling:
        description: 'Autoscaling enabled or not for the deployments'
        required: false
        type: boolean
        default: true
      environment:
        description: "Deployment environment - dev/test/prod"
        required: true
        type: string
        default: "dev"
      tag:
        description: 'Docker tag; e.g. PR number, tag, test or prod'
        required: false
        type: string
        default: ${{ github.event.number }}
      triggers:
        description: Paths to trigger a deploy; omit=always; e.g. ('backend/' 'frontend/')
        required: false
        type: string

      ### Usually a bad idea / not recommended
      directory:
        description: 'Chart directory.'
        default: 'charts/onroutebc'
        required: false
        type: string
      timeout-minutes:
        description: 'Timeout minutes'
        default: 10
        required: false
        type: number
      values:
        description: 'Values file.'
        default: 'values.yaml'
        required: false
        type: string
      params:
        description: 'Extra parameters to pass to helm upgrade'
        default: ''
        required: false
        type: string
  
  workflow_dispatch:
    inputs:
      ### Required
      release:
        description: 'release name'
        required: true
        type: string
        default: "demo"
      
      repository:
        description: 'repository name.'
        required: false
        type: string
        default: "onroutebc"

      ### Typical / recommended
      autoscaling:
        description: 'Autoscaling enabled or not for the deployments'
        required: false
        type: boolean
        default: true
      environment:
        description: "Deployment environment - dev/test/prod"
        required: true
        type: choice
        options: ["dev","test","prod"]
        default: "dev"
      tag:
        description: 'Docker tag; e.g. PR number, tag, test or prod'
        required: false
        type: string
        default: "latest"
      ### Usually a bad idea / not recommended
      directory:
        description: 'Chart directory.'
        default: 'charts/onroutebc'
        required: false
        type: string
      values:
        description: 'Values file.'
        default: 'values.yaml'
        required: false
        type: string
      params:
        description: 'Extra parameters to pass to helm upgrade'
        default: ''
        required: false
        type: string

env:
  repo_release: ${{ inputs.repository }}-${{ inputs.release }}
  package_tag: ${{ inputs.tag }}

jobs:
  # https://github.com/bcgov-nr/action-deployer-openshift
  deploys:
    name: Helm
    environment: ${{ inputs.environment }}
    runs-on: ubuntu-22.04
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
      - name: Check Deployment Triggers
        id: triggers
        run: |
          # Expand for trigger processing

          # Always deploy if no triggers are provided
          if [ -z "${{ inputs.triggers }}" ]; then
            echo "Always deploy when no triggers are provided"
            echo "triggered=true" >> $GITHUB_OUTPUT
            exit 0
          fi

          # Deploy if changed files (git diff) match triggers
          TRIGGERS=${{ inputs.triggers }}
          git fetch origin ${{ github.event.repository.default_branch }}
          while read -r check; do
            for t in "${TRIGGERS[@]}"; do
              if [[ "${check}" =~ "${t}" ]]; then
                  echo "Build triggered based on git diff"
                  echo -e "${t}\n --> ${check}"
                  echo "triggered=true" >> $GITHUB_OUTPUT
                  exit 0
              fi
            done
          done < <(git diff origin/${{ github.event.repository.default_branch }} --name-only)

          # If here skip deployment
          echo "No triggers have fired, deployment skipped"

      - uses: redhat-actions/openshift-tools-installer@v1
        if: ${{ steps.triggers.outputs.triggered == 'true' }}
        with:
          oc: "4"

      - name: Deploy if Triggers Fired
        if: ${{ steps.triggers.outputs.triggered == 'true' }}
        working-directory: ${{ inputs.directory }}
        shell: bash
        run: |
          oc login --token=${{ secrets.oc_token }} --server=${{ vars.oc_server }}
          oc project ${{ vars.OC_NAMESPACE }} # Safeguard!

          # Interrupt any previous jobs (status = pending-upgrade)
          PREVIOUS=$(helm status ${{ env.repo_release }} -o json | jq .info.status || true)
          if [[ ${PREVIOUS} =~ pending ]]; then
            echo "Rollback triggered"
            helm rollback ${{ env.repo_release }} || \
              helm uninstall ${{ env.repo_release }}
          fi

          # Clean previous image, if any 
          if [[ ${{inputs.environment}} == 'dev' ]]; then
            helm uninstall ${{ env.repo_release }} || true
          fi

          # Deploy Helm release
          helm dependency update
          helm upgrade \
            --set global.autoscaling=${{ inputs.autoscaling }} \
            --set-string global.repository=${{ github.repository }} \
            --set-string global.tag=${{ inputs.tag }} \
            --install --wait --atomic ${{ env.repo_release }} \
            --timeout 10m --force \
            --values ${{ inputs.values }} \
            ${{ inputs.params }} .

          # print history 
          helm history ${{ env.repo_release }}
          
          # Remove old build runs, build pods and deployment pods
          oc delete po --field-selector=status.phase==Succeeded