base-deploy.yml

name: Base Deploy

on:
  workflow_call:
    inputs:
      environment:
        description: "Target environment (preprod | prod)"
        required: true
        type: string
      ref:
        description: "Git ref to deploy (branch/tag/SHA). For prod, supply the RC tag to promote."
        required: true
        type: string
      release_type:
        description: "Version bump for base version (preprod only: patch|minor|major)"
        required: false
        default: "patch"
        type: string
    secrets: inherit

jobs:
  metadata:
    name: "Set CI/CD metadata"
    runs-on: ubuntu-latest
    timeout-minutes: 2
    outputs:
      build_datetime: ${{ steps.variables.outputs.build_datetime }}
      build_timestamp: ${{ steps.variables.outputs.build_timestamp }}
      build_epoch: ${{ steps.variables.outputs.build_epoch }}
      nodejs_version: ${{ steps.variables.outputs.nodejs_version }}
      python_version: ${{ steps.variables.outputs.python_version }}
      terraform_version: ${{ steps.variables.outputs.terraform_version }}
      ref: ${{ steps.variables.outputs.ref }}
      environment: ${{ steps.variables.outputs.environment }}
    steps:
      - name: "Checkout ref"
        uses: actions/checkout@v5
        with:
          ref: ${{ inputs.ref }}
          fetch-depth: 0  # get full history + tags

      - name: "Set CI/CD variables"
        id: variables
        shell: bash
        run: |
          set -euo pipefail
          datetime=$(date -u +'%Y-%m-%dT%H:%M:%S%z')
          echo "build_datetime=$datetime" >> $GITHUB_OUTPUT
          echo "build_timestamp=$(date --date=$datetime -u +'%Y%m%d%H%M%S')" >> $GITHUB_OUTPUT
          echo "build_epoch=$(date --date=$datetime -u +'%s')" >> $GITHUB_OUTPUT
          echo "nodejs_version=$(grep -E '^nodejs' .tool-versions 2>/dev/null | cut -d' ' -f2 | head -n1)" >> $GITHUB_OUTPUT
          echo "python_version=$(grep -E '^python' .tool-versions 2>/dev/null | cut -d' ' -f2 | head -n1)" >> $GITHUB_OUTPUT
          echo "terraform_version=$(grep -E '^terraform' .tool-versions 2>/dev/null | cut -d' ' -f2 | head -n1)" >> $GITHUB_OUTPUT
          echo "ref=${{ inputs.ref }}" >> $GITHUB_OUTPUT
          echo "environment=${{ inputs.environment }}" >> $GITHUB_OUTPUT

      - name: "List variables"
        shell: bash
        run: |
          export BUILD_DATETIME="${{ steps.variables.outputs.build_datetime }}"
          export BUILD_TIMESTAMP="${{ steps.variables.outputs.build_timestamp }}"
          export BUILD_EPOCH="${{ steps.variables.outputs.build_epoch }}"
          export NODEJS_VERSION="${{ steps.variables.outputs.nodejs_version }}"
          export PYTHON_VERSION="${{ steps.variables.outputs.python_version }}"
          export TERRAFORM_VERSION="${{ steps.variables.outputs.terraform_version }}"
          export REF="${{ steps.variables.outputs.ref }}"
          export ENVIRONMENT="${{ steps.variables.outputs.environment }}"
          echo "build_datetime=$BUILD_DATETIME"
          echo "build_timestamp=$BUILD_TIMESTAMP"
          echo "build_epoch=$BUILD_EPOCH"
          echo "nodejs_version=$NODEJS_VERSION"
          echo "python_version=$PYTHON_VERSION"
          echo "terraform_version=$TERRAFORM_VERSION"
          echo "ref=$REF"
          echo "environment=$ENVIRONMENT"

  deploy:
    name: "Deploy to ${{ needs.metadata.outputs.environment }}"
    runs-on: ubuntu-latest
    needs: [metadata]
    timeout-minutes: 45
    permissions:
      id-token: write
      contents: write
    environment: ${{ needs.metadata.outputs.environment }}
    steps:
      - name: "Setup Terraform"
        uses: hashicorp/setup-terraform@v3
        with:
          terraform_version: ${{ needs.metadata.outputs.terraform_version }}

      - name: "Set up Python"
        uses: actions/setup-python@v5
        with:
          python-version: "3.13"

      - name: "Checkout repository at ref"
        uses: actions/checkout@v5
        with:
          ref: ${{ needs.metadata.outputs.ref }}
          fetch-depth: 0

      - name: "Build lambda artefact"
        shell: bash
        run: |
          make dependencies install-python
          make build

      - name: "Upload lambda artefact"
        uses: actions/upload-artifact@v4
        with:
          name: lambda
          path: dist/lambda.zip

      - name: "Download Built Lambdas"
        uses: actions/download-artifact@v5
        with:
          name: lambda
          path: ./build

      - name: "Configure AWS Credentials"
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: arn:aws:iam::${{ secrets.AWS_ACCOUNT_ID }}:role/service-roles/github-actions-api-deployment-role
          aws-region: eu-west-2

      - name: "Terraform Apply"
        env:
          ENVIRONMENT: ${{ needs.metadata.outputs.environment }}
          WORKSPACE: "default"
          TF_VAR_API_CA_CERT: ${{ secrets.API_CA_CERT }}
          TF_VAR_API_CLIENT_CERT: ${{ secrets.API_CLIENT_CERT }}
          TF_VAR_API_PRIVATE_KEY_CERT: ${{ secrets.API_PRIVATE_KEY_CERT }}
          TF_VAR_SPLUNK_HEC_TOKEN: ${{ secrets.SPLUNK_HEC_TOKEN }}
          TF_VAR_SPLUNK_HEC_ENDPOINT: ${{ secrets.SPLUNK_HEC_ENDPOINT }}

        working-directory: ./infrastructure
        shell: bash
        run: |
          set -euo pipefail
          mkdir -p ./build
          echo "Running: make terraform env=$ENVIRONMENT workspace=$WORKSPACE stack=networking tf-command=apply"
          make terraform env=$ENVIRONMENT stack=networking tf-command=apply workspace=$WORKSPACE
          echo "Running: make terraform env=$ENVIRONMENT workspace=$WORKSPACE stack=api-layer tf-command=apply"
          make terraform env=$ENVIRONMENT stack=api-layer tf-command=apply workspace=$WORKSPACE

      - name: "Set up git identity"
        if: ${{ needs.metadata.outputs.environment == 'preprod' || needs.metadata.outputs.environment == 'prod' }}
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"

      # ---------- Preprod path: create RC tag + pre-release ----------
      - name: "Create/Push RC tag for preprod"
        if: ${{ needs.metadata.outputs.environment == 'preprod' }}
        id: rc_tag
        shell: bash
        run: |
          set -euo pipefail
          git fetch --tags

          # Helper: get latest final and latest RC (across all bases)
          latest_final="$(git tag -l 'v[0-9]*.[0-9]*.[0-9]*' \
            | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -n1 || true)"
          latest_any_rc="$(git tag -l 'v[0-9]*.[0-9]*.[0-9]*-rc.*' \
            | sort -V | tail -n1 || true)"

          # Determine the base version (vX.Y.Z) we will use for the next RC.
          # If release_type=rc and we already have RCs, keep the SAME base as the latest RC.
          # Otherwise, derive base from latest FINAL and bump per release_type.
          if [[ "${{ inputs.release_type }}" == "rc" && -n "${latest_any_rc}" ]]; then
            base="${latest_any_rc%-rc.*}"   # strip '-rc.N' → vX.Y.Z
          else
            # Start from latest FINAL (or 0.0.0 if none)
            if [[ -z "${latest_final}" ]]; then
              base_major=0; base_minor=0; base_patch=0
            else
              IFS='.' read -r base_major base_minor base_patch <<< "${latest_final#v}"
            fi

            case "${{ inputs.release_type }}" in
              major) base_major=$((base_major+1)); base_minor=0; base_patch=0 ;;
              minor) base_minor=$((base_minor+1)); base_patch=0 ;;
              patch|rc|*) base_patch=$((base_patch+1)) ;;  # 'rc' with no prior RCs → default to patch bump
            esac

            base="v${base_major}.${base_minor}.${base_patch}"
          fi

          # Compute next RC number for this base
          last_rc_for_base="$(git tag -l "${base}-rc.*" | sort -V | tail -n1 || true)"
          if [[ -z "${last_rc_for_base}" ]]; then
            next_rc="${base}-rc.1"
          else
            n="${last_rc_for_base##*-rc.}"
            next_rc="${base}-rc.$((n+1))"
          fi

          # Tag current commit (whatever ref was checked out)
          sha="$(git rev-parse HEAD)"
          echo "Tagging ${sha} as ${next_rc}"
          git tag -a "${next_rc}" "${sha}" -m "Release candidate ${next_rc}"
          git push origin "${next_rc}"

          echo "rc=${next_rc}" >> "$GITHUB_OUTPUT"

      - name: "Create GitHub Pre-release (preprod)"
        if: ${{ needs.metadata.outputs.environment == 'preprod' }}
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.rc_tag.outputs.rc }}
          release_name: "Pre-release ${{ steps.rc_tag.outputs.rc }}"
          body: |
            Auto pre-release created during preprod deployment.
          draft: false
          prerelease: true

      # ---------- Prod path: promote RC to final ----------
      - name: "Validate input is an RC tag (prod)"
        if: ${{ needs.metadata.outputs.environment == 'prod' }}
        shell: bash
        run: |
          set -euo pipefail
          ref="${{ needs.metadata.outputs.ref }}"
          if [[ ! "$ref" =~ ^v[0-9]+\.[0-9]+\.[0-9]+-rc\.[0-9]+$ ]]; then
            echo "ERROR: For prod, 'ref' must be an RC tag like v1.4.0-rc.2 (got: $ref)"
            exit 1
          fi
          git fetch --tags --quiet
          if ! git rev-parse -q --verify "refs/tags/$ref" >/dev/null; then
            echo "ERROR: Tag '$ref' does not exist on origin."
            exit 1
          fi

      - name: "Create final tag from RC (prod)"
        if: ${{ needs.metadata.outputs.environment == 'prod' }}
        id: final_tag
        shell: bash
        run: |
          set -euo pipefail
          rc="${{ needs.metadata.outputs.ref }}"
          final="${rc%-rc.*}"  # strip '-rc.N'
          sha=$(git rev-list -n 1 "$rc")

          if git rev-parse -q --verify "refs/tags/${final}" >/dev/null; then
            echo "ERROR: Final tag ${final} already exists."
            exit 1
          fi

          echo "Promoting $rc ($sha) to final $final"
          git tag -a "${final}" "${sha}" -m "Release ${final}"
          git push origin "${final}"
          echo "final=${final}" >> $GITHUB_OUTPUT

      - name: "Create GitHub Release (prod)"
        if: ${{ needs.metadata.outputs.environment == 'prod' }}
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.final_tag.outputs.final }}
          release_name: "Release ${{ steps.final_tag.outputs.final }}"
          body: |
            Auto-release created during production deployment.
          draft: false
          prerelease: false