name: Deploy Lambda (Terraform)

on:
  workflow_call:
    inputs:
      lambda_name:
        required: true
        type: string

      lambda_path:
        required: true
        type: string

      stage:
        required: true
        type: string

      image_uri:
        description: "Full ECR image URI including digest"
        required: true
        type: string

    secrets:
      AWS_ACCESS_KEY_ID:
        required: true
      AWS_SECRET_ACCESS_KEY:
        required: true
      AWS_REGION:
        required: true

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: ${{ secrets.AWS_REGION }}

      - uses: hashicorp/setup-terraform@v3

      - name: Terraform Init
        working-directory: ${{ inputs.lambda_path }}
        run: terraform init -reconfigure

      - name: Terraform Workspace
        working-directory: ${{ inputs.lambda_path }}
        run: |
          terraform workspace select ${{ inputs.stage }} \
            || terraform workspace new ${{ inputs.stage }}

      - name: Terraform Plan
        working-directory: ${{ inputs.lambda_path }}
        run: |
          terraform plan \
            -var="stage=${{ inputs.stage }}" \
            -var="lambda_name=${{ inputs.lambda_name }}" \
            -var="image_uri=${{ inputs.image_uri }}" \
            -out=lambdaplan

      # Uncomment when ready
      # - name: Terraform Apply
      #   working-directory: ${{ inputs.lambda_path }}
      #   run: terraform apply -auto-approve lambdaplan