backendAPI.yml

name: BackendAPI

on:
  workflow_dispatch:
  workflow_run:
    workflows: [Infrastructure]
    types: completed
    branches:
      - dev
      - stage
      - main
  push:
    paths:
      - 'backendAPI/**'
      - '.github/workflows/backendAPI.yml'


env:
  REGISTRY: ghcr.io
  # COMMIT_SHA: ${{ github.event.after }}
  COMMIT_SHA: ${{ github.sha }}
  FILESHARE_APPDATA_MIGRATIONS_PATH: migrations/stage_prod

jobs:
  test:
    runs-on: ubuntu-24.04
    environment: test
    env:
      KEYVAULT_HEALTH: ${{ vars.KEYVAULT_HEALTH }}
      FRONTEND_SVELTE_ORIGIN: ${{ vars.FRONTEND_SVELTE_ORIGIN }}
      FRONTEND_SVELTE_FQDN: ${{ vars.FRONTEND_SVELTE_FQDN }}
      POSTGRES_DB: ${{ vars.POSTGRES_DB }}
      POSTGRES_HOST: ${{ vars.POSTGRES_HOST }}
      POSTGRES_USER: ${{ secrets.POSTGRES_USER }}
      POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
      REDIS_ARGS: ${{ secrets.REDIS_ARGS }}
      REDIS_HOST: ${{ vars.REDIS_HOST }}
      REDIS_PORT: ${{ vars.REDIS_PORT }}
      REDIS_SESSION_DB: ${{ vars.REDIS_SESSION_DB }}
      REDIS_PASSWORD: ${{ secrets.REDIS_PASSWORD }}
      MONGODB_HOST: ${{ vars.MONGODB_HOST }}
      MONGODB_PORT: ${{ vars.MONGODB_PORT }}
      BACK_CLIENT_SECRET: ${{ secrets.BACK_CLIENT_SECRET }}
      AZURE_TENANT_ID: ${{ vars.AZURE_TENANT_ID }}
    steps:
      - name: echos different variables
        env:
          GITHUB_EVENT: ${{ toJSON(github.event) }}
        run: |
          echo "=== Is this the correct tag: github.event.after? ==="
          echo ${{ github.event.after }}
          echo "=== github.event.ref ==="
          echo ${{ github.event.ref }}
          echo "=== github.ref ==="
          echo ${{ github.ref }}
          echo "=== github.event.pull_request.head.sha ==="
          echo ${{ github.event.pull_request.head.sha }}
          echo "=== github.event.workflow_run.head_sha ==="
          echo ${{ github.event.workflow_run.head_sha }}
          echo "=== github.event.workflow_run.head_branch ==="
          echo ${{ github.event.workflow_run.head_branch }}
          echo "=== github.event.workflow_run.name ==="
          echo ${{ github.event.workflow_run.name }}
          echo "=== github.event.workflow_run.path ==="
          echo ${{ github.event.workflow_run.path }}
          echo "=== github.event.workflow_run.conclusion ==="
          echo ${{ github.event.workflow_run.conclusion }}
          echo "=== github.event.workflow_run ==="
          echo ${{ github.event.workflow_run }}
          echo "=== GITHUB_SHA ==="
          echo $GITHUB_SHA
          echo "=== GITHUB_WORKFLOW_SHA ==="
          echo $GITHUB_WORKFLOW_SHA
          echo "=== github.sha ==="
          echo ${{ github.sha }}
          echo "=== COMMIT_SHA ==="
          echo $COMMIT_SHA
        # echo "=== github.event.workflow_run.referenced_workflows ==="
        # echo ${{ github.event.workflow_run.referenced_workflows }}
        # echo "=== github.event.workflow_run.referenced_workflows.path ==="
        # echo ${{ github.event.workflow_run.referenced_workflows.path }}
        # echo "=== github.event.workflow_run.referenced_workflows.ref ==="
        # echo ${{ github.event.workflow_run.referenced_workflows.ref }}
        # echo "=== github.event.workflow_run.referenced_workflows.sha ==="
        # echo ${{ github.event.workflow_run.referenced_workflows.sha }}
        # echo "=== github.event.workflow_run.workflow.name ==="
        # echo ${{ github.event.workflow_run.workflow.name }}
        # echo "=== github.event.workflow_run.workflow.path ==="
        # echo ${{ github.event.workflow_run.workflow.path }}
        # echo "=== REDIS_HOST ==="
        # echo $REDIS_HOST
        # echo "=== REDIS_PORT ==="
        # echo $REDIS_PORT
        # echo "=== REDIS_SESSION_DB ==="
        # echo $REDIS_SESSION_DB
      - uses: actions/checkout@v4
      # - name: Build
      #   run: |
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       build backend_api
      - name: Build
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            build
      - name: Spin up containers
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            up -d
      # - name: Code Formating
      #   run: |
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       run --rm backend_api \
      #       sh -c "black --check ."
      - name: Code Formating
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            exec -T backend_api \
            sh -c "black --check ."
      # - name: Linting
      #   run: |
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       run --rm backend_api \
      #       sh -c "ruff check ."
      - name: Linting
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            exec -T backend_api \
            sh -c "ruff check ."
      # - name: Unit testing
      #   run: |
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       up -d
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       exec -T backend_api \
      #       sh -c "pytest -v"
      #     docker compose \
      #       -f compose.yml \
      #       -f compose.override.test.yml \
      #       down
      - name: Unit testing
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            exec -T backend_api \
            sh -c "pytest -v"
      - name: Stop containers
        run: |
          docker compose \
            -f compose.yml \
            -f compose.override.test.yml \
            down
        # docker compose \
        # -f compose.yml \
        # -f compose.override.test.yml \
        # exec -T backend_api \
        # sh -c "cd /app/src && alembic revision --autogenerate && alembic upgrade head"
        # docker compose \
        #   -f compose.yml \
        #   -f compose.override.test.yml \
        #   run --rm backend_api \
        #   sh -c "pytest -v"

  check_for_infrastructure_change:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2
      - name: Check for infrastructure changes
        id: check_for_infrastructure_change
        # replace --exit-code with --quite for less output on console if necessary!
        run: |
          if git diff --exit-code HEAD^ HEAD -- infrastructure/ .github/workflows/infrastructure.yml; then
            echo "No infrastructure changes detected."
            echo "infrastructure_changed=FALSE" >> $GITHUB_OUTPUT
          else
            echo "Infrastructure changes detected."
            echo "infrastructure_changed=TRUE" >> $GITHUB_OUTPUT
          fi
          echo "=== Contents of $GITHUB_OUTPUT ==="
          cat $GITHUB_OUTPUT
    outputs:
      infrastructure_changed: ${{ steps.check_for_infrastructure_change.outputs.infrastructure_changed }}

  containerize:
    # if: ${{ github.event.ref == 'refs/heads/main' || github.event.ref == 'refs/heads/stage' }}
    # only run on stage and main branch
    # only run if no infrastructure changes were detected, but do run, if the workflow was triggered by a workflow_run event (then the github.event.workflow_run.head_sha is not null)
    # TBD: split into multiline if statement:
    if: ${{((github.event.ref == 'refs/heads/main' || github.event.ref == 'refs/heads/stage') && needs.check_for_infrastructure_change.outputs.infrastructure_changed == 'FALSE' ) || ( ( github.event.workflow_run.head_branch == 'main' || github.event.workflow_run.head_branch == 'stage' ) && github.event.workflow_run.name == 'Infrastructure' && github.event.workflow_run.conclusion == 'success') }}
    needs: [test, check_for_infrastructure_change]
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      contents: read
      packages: write
    environment: stage
    steps:
      # - name: echos github.event.after variable
      #   run: |
      #     echo "=== Is this the correct tag: github.event.after? ==="
      #     echo ${{ github.event.after }}
      #     echo $CONTAINER_TAG
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.workflow_run.head_sha }} 
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build for production
        run: |
          docker compose -f compose.yml -f compose.prod.yml build --build-arg COMMIT_SHA=${{env.COMMIT_SHA}} backend_api
      - name: Show images
        run: docker image list
      - name: Tag and push with latest and commit hash
        run: |
          docker tag \
            ${{github.event.repository.name}}-backend_api:latest \
            ${{env.REGISTRY}}/${{github.repository}}-backend_api:latest
          docker tag \
            ${{github.event.repository.name}}-backend_api:latest \
            ${{env.REGISTRY}}/${{github.repository}}-backend_api:$COMMIT_SHA
          docker push \
            ${{env.REGISTRY}}/${{github.repository}}-backend_api:latest
          docker push \
              ${{env.REGISTRY}}/${{github.repository}}-backend_api:$COMMIT_SHA

  deploy_stage:
    needs: containerize
    # if: ${{ github.event.ref == 'refs/heads/main' || github.event.ref == 'refs/heads/stage' }}
    # if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/stage' }}
    if: ${{((github.event.ref == 'refs/heads/main' || github.event.ref == 'refs/heads/stage') && needs.check_for_infrastructure_change.outputs.infrastructure_changed == 'FALSE' ) || ( ( github.event.workflow_run.head_branch == 'main' || github.event.workflow_run.head_branch == 'stage' ) && github.event.workflow_run.name == 'Infrastructure' && github.event.workflow_run.conclusion == 'success') }}
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      packages: read
    environment: stage
    steps:
      # - name: echos github.event.after variable
      #   run: |
      #     echo "=== Is this the correct tag: github.event.after? ==="
      #     echo ${{ github.event.after }}
      #     echo $CONTAINER_TAG
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Login to Azure
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZURE_GITHUBACTIONSMANAGEDIDENTITY_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
      - name: Deploy to staging
      # TBD: changing mode to single here, as there is a terraform bug with the time-out, when setting containerapp to single!
        env:
          IDENTITY_REF: "/subscriptions/${{secrets.AZURE_SUBSCRIPTION_ID}}/resourcegroups/${{vars.AZURE_RESOURCE_GROUP}}/providers/Microsoft.ManagedIdentity/userAssignedIdentities/${{vars.AZURE_BACKENDIDENTITY_NAME}}"
        run: |
          az containerapp revision set-mode \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --mode single
          az containerapp secret set \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --secrets \
              "postgres-user=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/postgres-user,identityref:$IDENTITY_REF" \
              "postgres-password=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/postgres-password,identityref:$IDENTITY_REF"
          sleep 10
          az containerapp update \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --image ${{env.REGISTRY}}/${{github.repository}}-backend_api:$COMMIT_SHA \
            --set-env-vars \
              "POSTGRES_DB=${{ vars.POSTGRES_DB }}" \
              "POSTGRES_USER=secretref:postgres-user" \
              "POSTGRES_PASSWORD=secretref:postgres-password"
      # TBD: remove AZ_KEYVAULT_HOST here - coming from terraform now!
      # REMOVED NOW: 
      # "AZ_KEYVAULT_HOST=${{ vars.AZURE_KEYVAULT_HOST }}" \
      # TBD: remove KEYVAULT_HEALTH here: the point is to read it in the application!
      # REMOVED NOW HERE: from secret set & set-env-vars respectively:
      # "keyvault-health=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/keyvault-health,identityref:$IDENTITY_REF" \
      # "KEYVAULT_HEALTH=secretref:keyvault-health" \
      # TBD: double check with POSTGRES USER & PSASSWORD - should be coming from Terraform now - but not as environment variable!
      # TBD: double check with POSTGRES HOST - should be coming from Terraform now!
      # REMOVED NOW HERE: from secret set & set-env-vars respectively:
      # "postgres-host=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/postgres-host,identityref:$IDENTITY_REF" \
      # "POSTGRES_HOST=secretref:postgres-host" \
      # TBD: this is weird: here the variable is named AZ_KEYVAULT_HOST, but in the container it is named AZURE_KEYVAULT_HOST
      # when renaming it here - conatinerapp fails to start with managed identity error - cannot get to keyvault!
      # TBD: this should be ready to go. Remember to put into prod as well!
      - name: Upgrade database
        run: |
          mkdir -p postgres_migration
          script -q -e -c "az containerapp exec \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --command \"scripts/stage_prod/postgres_migration_upgrade.sh\"" > postgres_migration/upgrade_stage_${{ env.COMMIT_SHA }}.log
          echo "=== Contents of postgres_migration/upgrade_stage_${{ env.COMMIT_SHA }}.log ==="
          cat postgres_migration/upgrade_stage_${{ env.COMMIT_SHA }}.log
      - name: Upload migration upgrade artifacts
        uses: actions/upload-artifact@v4
        with:
          name: postgres_migration_upgrade_stage_results_${{ env.COMMIT_SHA }}
          path: postgres_migration/upgrade_stage_${{ env.COMMIT_SHA }}.log
      #
        # TBD: consider deleting all existing environment variables before setting the new ones?
        # implemented as in https://learn.microsoft.com/en-us/azure/container-apps/manage-secrets?tabs=azure-cli
        # TBD: consider putting all of this into a deploymentscript and reuse it and in deploy_prod!
      - name: Logout from Azure
        uses: azure/CLI@v2
        with:
          inlineScript: |
            az logout
            az cache purge
            az account clear


  # DEBUG: manually fix migrations on the servers: az containerapp exec -g <resource_group> -n <backendAPI_containerapp_name> --command "/bin/sh"
  # Make sure to persist the changes to mounted volume and commit them to the repo afterwards!
  check_postgres_migrations:
    needs: deploy_stage
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      # packages: read
    environment: stage
    steps:
      - name: Login to Azure
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZURE_GITHUBACTIONSMANAGEDIDENTITY_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
      - name: Check for migrations
        id: check_run
        run: |
          mkdir -p postgres_migration
          script -q -e -c "az containerapp exec \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --command \"scripts/stage_prod/postgres_migration_check.sh\"" > postgres_migration/check_connection_${{ env.COMMIT_SHA }}.log
          az storage file download -s ${{ vars.AZURE_FILESHARE_APPDATA }} --account-name ${{ vars.AZURE_STORAGE_ACCOUNT }} -p ${{env.FILESHARE_APPDATA_MIGRATIONS_PATH}}/logs/check_${{ env.COMMIT_SHA }}.log --dest postgres_migration/check_${{ env.COMMIT_SHA }}.log
          az storage file download -s ${{ vars.AZURE_FILESHARE_APPDATA }} --account-name ${{ vars.AZURE_STORAGE_ACCOUNT }} -p ${{env.FILESHARE_APPDATA_MIGRATIONS_PATH}}/logs/check_exit_code_${{ env.COMMIT_SHA }}.log --dest postgres_migration/check_exit_code_${{ env.COMMIT_SHA }}.log
          ALEMBIC_EXIT_CODE=$(cat postgres_migration/check_exit_code_${{ env.COMMIT_SHA }}.log)
          echo "Alembic exit code: $ALEMBIC_EXIT_CODE"
          echo "alembic_check_exit_code=$ALEMBIC_EXIT_CODE" >> $GITHUB_OUTPUT
      - name: Upload migration check artifacts
        uses: actions/upload-artifact@v4
        with:
          name: postgres_migration_check_results_${{ env.COMMIT_SHA }}
          path: |
            postgres_migration/check_${{ env.COMMIT_SHA }}.log
            postgres_migration/check_connection_${{ env.COMMIT_SHA }}.log
            postgres_migration/check_exit_code_${{ env.COMMIT_SHA }}.log
      # - name: Display migration check output
      #   run: |
      #     echo ${{ steps.check_run.outputs.script_output }}
      #     echo ${{ steps.check_run.outputs.script_exit_code }}
      - name: Logout from Azure
        uses: azure/CLI@v2
        with:
          inlineScript: |
            az logout
            az cache purge
            az account clear
    outputs:
      alembic_check: ${{ steps.check_run.outputs.alembic_check_exit_code }}


  create_postgres_migration_scripts:
    needs: check_postgres_migrations
    if: ${{ needs.check_postgres_migrations.outputs.alembic_check != 0 }}
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      contents: write
      pull-requests: write
    environment: stage
    env:
      MIGRATION_FILES_PATH: backendAPI/src/migrations/stage_prod/versions
    steps:
      - uses: actions/checkout@v4
      - name: Check what directory we are in
        # maybe we need a checkout repo step?
        run: |
          pwd
          ls -la
      - name: Echo COMMIT_SHA
        run: |
          echo ${{ env.COMMIT_SHA }}
          echo $COMMIT_SHA
      - name: Login to Azure
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZURE_GITHUBACTIONSMANAGEDIDENTITY_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
      - name: Create migration scripts
        id: migration_scripts
        # OUTPUT=$(script -q -e -c "pwd")
        # OUTPUT=$(script -q -e -c "az containerapp exec \
        # --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
        # --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
        # --command \"scripts/stage_prod/postgres_migration_check.sh\""
        run: |
          mkdir -p postgres_migration
          script -q -e -c "az containerapp exec \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --command \"scripts/stage_prod/postgres_migration_revision.sh\"" > postgres_migration/revision_connection_${{ env.COMMIT_SHA }}.log
          az storage file download -s ${{ vars.AZURE_FILESHARE_APPDATA }} --account-name ${{ vars.AZURE_STORAGE_ACCOUNT }} -p ${{env.FILESHARE_APPDATA_MIGRATIONS_PATH}}/logs/revision_${{ env.COMMIT_SHA }}.log --dest postgres_migration/revision_${{ env.COMMIT_SHA }}.log
          az storage file download -s ${{ vars.AZURE_FILESHARE_APPDATA }} --account-name ${{ vars.AZURE_STORAGE_ACCOUNT }} -p ${{env.FILESHARE_APPDATA_MIGRATIONS_PATH}}/logs/revision_filename_${{ env.COMMIT_SHA }}.log --dest postgres_migration/revision_filename_${{ env.COMMIT_SHA }}.log
          cat postgres_migration/revision_connection_${{ env.COMMIT_SHA }}.log
          cat postgres_migration/revision_${{ env.COMMIT_SHA }}.log
          cat postgres_migration/revision_filename_${{ env.COMMIT_SHA }}.log
          MIGRATION_SCRIPT_PATH_REMOTE=$(cat postgres_migration/revision_filename_${{ env.COMMIT_SHA }}.log)
          MIGRATION_SCRIPT_PATH_REMOTE=${MIGRATION_SCRIPT_PATH_REMOTE#/}
          MIGRATION_SCRIPT_FILENAME=$(basename $MIGRATION_SCRIPT_PATH_REMOTE)
          echo "MIGRATION_SCRIPT_FILENAME=$MIGRATION_SCRIPT_FILENAME" >> $GITHUB_ENV
          az storage file download -s ${{ vars.AZURE_FILESHARE_APPDATA }} --account-name ${{ vars.AZURE_STORAGE_ACCOUNT }} -p migrations/stage_prod/versions/$MIGRATION_SCRIPT_FILENAME --dest $MIGRATION_FILES_PATH/$MIGRATION_SCRIPT_FILENAME
          cat $MIGRATION_FILES_PATH/$MIGRATION_SCRIPT_FILENAME
        # For debugging enter container with:
        # az containerapp exec -n <resource_name> -g <resource_group> --command "/bin/sh"
      - name: Upload migration check artifacts
        uses: actions/upload-artifact@v4
        with:
          name: postgres_migration_revision_results_${{ env.COMMIT_SHA }}
          path: |
            postgres_migration/revision_connection_${{ env.COMMIT_SHA }}.log
            postgres_migration/revision_${{ env.COMMIT_SHA }}.log
            $MIGRATION_FILES_PATH/${{ env.MIGRATION_SCRIPT_FILENAME }}
      - name: Echo the migration script
        run: |
          cat $MIGRATION_FILES_PATH/${{ env.MIGRATION_SCRIPT_FILENAME }}
      # - name: Commit migration script
      #   uses: EndBug/add-and-commit@v9
      #   with:
      #     add: '${{ env.MIGRATION_FILES_PATH}}/${{ env.MIGRATION_SCRIPT_FILENAME }}'
      #     message: '[migrations] Add migration script for commit ${{ env.COMMIT_SHA }}'
      # - name: Echo git status
      #   run: |
      #     git status
      - name: Create a pull request
        uses: peter-evans/create-pull-request@v5
        with:
          title: "[migrations] for postgres for commit ${{ env.COMMIT_SHA }}"
          add-paths: '${{ env.MIGRATION_FILES_PATH}}/*'
          commit-message: "[migrations] for commit ${{ env.COMMIT_SHA }}"
          branch: "migrations/${{ env.COMMIT_SHA }}"
          base: stage
          delete-branch: true
          labels: "postgres"
          # or branch: "migrations/${{ env.COMMIT_SHA }}"


# deploy_prod:
  # needs: [deploy-stage, check_postgres_migrations, migration-workflow]
  # if: |
  #   github.event.ref == 'refs/heads/main' &&
  #   (needs.check_postgres_migrations.outputs.alembic_check == '0' || needs.migration-workflow.result == 'success')
  # # ...

# No: the whole piepline is rerun on pull request from migrating database:
# deploy_prod:
  # needs: [deploy-stage, check_postgres_migrations
  # if: |
  #   github.event.ref == 'refs/heads/main' &&
  #   needs.check_postgres_migrations.outputs.alembic_check == '0'
  # if the migration workflow was not successful, the pull request did not get created!

  deploy_prod:
    needs: [ deploy_stage, check_postgres_migrations ]
    # if: ${{ github.event.ref  == 'refs/heads/main' && needs.check_postgres_migrations.outputs.alembic_check == 0 }}
    if: ${{ (github.event.ref  == 'refs/heads/main' || github.event.workflow_run.head_branch == 'main') && needs.check_postgres_migrations.outputs.alembic_check == 0 }}
    # as this environmnet requires a manual review:
    # also wait on the pull request from postgres migrations to be merged
    # if check migrations detected changes.
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      packages: read
    environment: prod
    steps:
      # - name: echos github.event.after variable
      #   run: |
      #     echo "=== Is this the correct tag: github.event.after? ==="
      #     echo ${{ github.event.after }}
      #     echo $CONTAINER_TAG
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Login to Azure
        uses: azure/login@v2
        with:
          client-id: ${{ secrets.AZURE_GITHUBACTIONSMANAGEDIDENTITY_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
      - name: Deploy to production
      # TBD: changing mode to single here, as there is a terraform bug with the time-out, when setting containerapp to single!
        env:
          IDENTITY_REF: "/subscriptions/${{secrets.AZURE_SUBSCRIPTION_ID}}/resourcegroups/${{vars.AZURE_RESOURCE_GROUP}}/providers/Microsoft.ManagedIdentity/userAssignedIdentities/${{vars.AZURE_BACKENDIDENTITY_NAME}}"
        # TBD: consider putting all of this into adeploymentscript and reuse her and in deploy_stage!
        run: |
          az containerapp revision set-mode \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --mode single
          az containerapp secret set \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --secrets \
              "postgres-user=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/postgres-user,identityref:$IDENTITY_REF" \
              "postgres-password=keyvaultref:${{ vars.AZURE_KEYVAULT_HOST }}secrets/postgres-password,identityref:$IDENTITY_REF"
          sleep 10
          az containerapp update \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --image ${{env.REGISTRY}}/${{github.repository}}-backend_api:$COMMIT_SHA \
            --set-env-vars \
              "POSTGRES_DB=${{ vars.POSTGRES_DB }}" \
              "POSTGRES_USER=secretref:postgres-user" \
              "POSTGRES_PASSWORD=secretref:postgres-password"
      - name: Upgrade database
        run: |
          mkdir -p postgres_migration
          script -q -e -c "az containerapp exec \
            --name ${{ vars.AZURE_CONTAINERAPP_BACKEND }} \
            --resource-group ${{vars.AZURE_RESOURCE_GROUP}} \
            --command \"scripts/stage_prod/postgres_migration_upgrade.sh\"" > postgres_migration/upgrade_prod_${{ env.COMMIT_SHA }}.log
      - name: Upload migration upgrade artifacts
        uses: actions/upload-artifact@v4
        with:
          name: postgres_migration_upgrade_prod_results_${{ env.COMMIT_SHA }}
          path: postgres_migration/upgrade_prod_${{ env.COMMIT_SHA }}.log
        # TBD: consider deleting all existing environment variables before setting the new ones?
        # implemented as in https://learn.microsoft.com/en-us/azure/container-apps/manage-secrets?tabs=azure-cli
      # TBD: consider displaying a "maintanance" page while the migrations are running - but more likely, the new container hasn't activated anyways yet.
      # TBD: or consider creating separate migration scripts for stage and prod? => another pull request? 2 different directories?
      - name: Logout from Azure
        uses: azure/CLI@v2
        with:
          inlineScript: |
            az logout
            az cache purge
            az account clear