name: AWS Deployment

on:
  workflow_call:
    inputs:
      aws_account_id:
        required: true
        type: string
      aws_resource_prefix:
        required: true
        type: string
      environment:
        required: true
        type: string
      release_tag:
        required: false
        type: string

concurrency:
  group: deploy-${{ inputs.environment }}
  cancel-in-progress: true

env:
  app_repo_role: arn:aws:iam::815624722760:role/core-application-repo
  aws_region: eu-west-2
  repository: core

jobs:
  push_docker_image:
    if: inputs.environment != 'production'
    name: Push docker image to AWS
    runs-on: ubuntu-latest
    permissions:
      id-token: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v3
        with:
          aws-region: ${{ env.aws_region }}
          role-to-assume: ${{ env.app_repo_role }}

      - name: Login to Amazon ECR
        id: ecr-login
        uses: aws-actions/amazon-ecr-login@v1
        with:
          mask-password: 'true'

      - name: Check if image with tag already exists
        run: |
          echo "image-exists=$(if aws ecr list-images --repository-name=$repository --query "imageIds[*].imageTag" | grep -q ${{ github.sha }}; then echo true; else echo false; fi)" >> $GITHUB_ENV

      - name: Build, tag, and push docker image to ECR
        id: build-image
        if: ${{ env.image-exists == 'false' }}
        env:
          registry: ${{ steps.ecr-login.outputs.registry }}
          commit_tag: ${{ github.sha }}
        run: |
          docker build -t $registry/$repository:$commit_tag . --target=production
          docker push $registry/$repository:$commit_tag

  deploy:
    name: Deploy image
    runs-on: ubuntu-latest
    environment: ${{ inputs.environment }}
    needs: push_docker_image

    steps:
      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v3
        with:
          aws-region: ${{ env.aws_region }}
          role-to-assume: ${{ env.app_repo_role }}

      - name: Login to Amazon ECR
        id: ecr-login
        uses: aws-actions/amazon-ecr-login@v1
        with:
          mask-password: 'true'

      - name: Get timestamp
        id: timestamp
        run: echo "timestamp=$(date +%Y%m%d%H%M%S)" >> $GITHUB_ENV

      - name: Get additional tag
        run: |
          echo "additional-tag=$(if [[ ${{ inputs.environment }} == 'production' ]]; then echo ${{ inputs.release_tag }}-${{ env.timestamp }}; else echo ${{ env.timestamp }}; fi)" >> $GITHUB_ENV

      - name: Add environment tag to existing image
        id: update-image-tags
        env:
          registry: ${{ steps.ecr-login.outputs.registry }}
          commit_tag: ${{ github.sha }}
          readable_tag: ${{ inputs.environment }}-${{ env.additional-tag }}
        run: |
          manifest=$(aws ecr batch-get-image --repository-name $repository --image-ids imageTag=$commit_tag --output text --query images[].imageManifest)
          aws ecr put-image --repository-name $repository --image-tag $readable_tag --image-manifest "$manifest"
          echo "image=$registry/$repository:$readable_tag" >> $GITHUB_ENV