application-onboarding-or-promotion-automation.yml

name: Automation for application onboarding or promotion

on:
  workflow_dispatch:
    inputs:
      application_name:
        description: Application name
        required: true
        type: string
      application_environment:
        description: Application environment
        required: true
        type: choice
        options:
          - dev
          - staging
          - sandbox
          - prod
          - utility
      maintainer_github_user:
        description: Maintainer GitHub username
        required: true
        type: string
      task:
        description: Onboarding or promoting
        required: true
        type: choice
        options:
          - onboarding
          - promoting
  workflow_call:
    inputs:
      application_name:
        description: Application name
        required: true
        type: string
      application_environment:
        description: Application environment
        required: true
        type: string
      maintainer_github_user:
        description: Maintainer GitHub username
        required: true
        type: string
      task:
        description: Onboarding or promoting
        required: true
        type: string

jobs:
  application-onboarding-or-promotion:
    runs-on: ubuntu-latest
    steps:
      - name: Check out ArgoCD infra repo
        uses: actions/checkout@v2
        with:
          repository: department-of-veterans-affairs/vsp-infra-argocd
          token: ${{ secrets.VA_VSP_BOT_GITHUB_TOKEN }}
          path: vsp-infra-argocd

      - name: Check if application already exists
        id: application_check
        run: |
          export application_exists=$(cat vsp-infra-argocd/chart/values.yaml | yq -o=json | jq -e '.projects|any(.name == "${{ inputs.application_name }}")' || true)
          if [ -z "$application_exists" ]; then export application_exists=false; fi
          echo "application_exists=$(echo ${application_exists})" >> $GITHUB_OUTPUT

      - name: Check if application environment exists
        id: environment_check
        run: |
          export environment_exists=$(yq '[.projects[] | select(.name == "${{ inputs.application_name }}")] | .[].environments | contains(["${{ inputs.application_environment }}"])' vsp-infra-argocd/chart/values.yaml || true)
          if [ -z "$environment_exists" ]; then export environment_exists=false; fi
          echo "environment_exists=$(echo ${environment_exists})" >> $GITHUB_OUTPUT

      - name: If application and environment exist
        if: |
          steps.application_check.outputs.application_exists == 'true' &&
          steps.environment_check.outputs.environment_exists == 'true'
        uses: KeisukeYamashita/create-comment@v1
        with:
          token: ${{ secrets.VA_VSP_BOT_GITHUB_TOKEN }}
          comment: |
            ${{ inputs.application_name }} is already deployed to ${{ inputs.application_environment }} as defined
            in the `projects` here https://github.com/department-of-veterans-affairs/vsp-infra-argocd/blob/main/chart/values.yaml
        
      - name: If application does not exist
        if: steps.application_check.outputs.application_exists == 'false'
        run: |
          cd vsp-infra-argocd/chart
          yq -i '.projects += [{"name": "${{ inputs.application_name }}", "environments":[]}]' values.yaml
          git add -A

      - name: If environment does not exist
        if: steps.environment_check.outputs.environment_exists == 'false'
        run: |
          cd vsp-infra-argocd/chart
          yq -i '(.projects[] | select(.name == "${{ inputs.application_name }}")).environments += ["${{ inputs.application_environment }}"]' values.yaml
          git add -A
          
      - name: Create pull request
        if: |
          steps.application_exists.outputs.application_exists == 'false' ||
          steps.environment_check.outputs.environment_exists == 'false'
        id: cpr
        uses: peter-evans/create-pull-request@v4
        with:
          path: vsp-infra-argocd
          token: ${{ secrets.VA_VSP_BOT_GITHUB_TOKEN }}
          add-paths: chart/values.yaml
          branch: "chore/${{ inputs.task }}-${{ inputs.application_name }}-${{ inputs.application_environment }}"
          commit-message: |
            {"application": "${{ inputs.application_name }}", "maintainer": "${{ inputs.maintainer_github_user }}", "environment": "${{ inputs.application_environment }}", "task": "${{ inputs.task }}"}
          title: ${{ inputs.task }} ${{ inputs.application_name }} to the ${{ inputs.application_environment }} environment
          body: Automated PR triggered by issue ${{ github.event.issue.html_url }} for ${{ inputs.task }} ${{ inputs.application_name }} to ${{ inputs.application_environment }}
          
      - name: Comment on pull request
        if: steps.cpr.outputs.pull-request-number
        uses: KeisukeYamashita/create-comment@v1
        with:
          token: ${{ secrets.VA_VSP_BOT_GITHUB_TOKEN }}
          comment: |
            The following PR has been created for ${{ inputs.task }} ${{ inputs.application_name }} to the ${{ inputs.application_environment }} environment
            ${{ steps.cpr.outputs.pull-request-url }}