# This workflow cleans up Preview deploys once a pull request is closed

name: PR - Preview Deploy Cleanup

on:
    pull_request:
        types: [closed]

jobs:
    deploy_preview_cleanup:
        name: Deploy Preview Cleanup
        runs-on: ubuntu-latest
        if: ${{ contains(github.event.pull_request.labels.*.name, 'deploy') }}

        permissions:
            id-token: write
            contents: read
            deployments: write

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

            - uses: aws-actions/configure-aws-credentials@v4
              with:
                  aws-region: us-east-1
                  role-to-assume: arn:aws:iam::169684386827:role/github-terraform-infra-role
                  role-duration-seconds: 3600

            - name: Login to Amazon ECR
              id: aws-ecr
              uses: aws-actions/amazon-ecr-login@v2

            - name: connect to tailscale
              uses: tailscale/github-action@8b804aa882ac3429b804a2a22f9803a2101a0db9
              env:
                  TS_EXPERIMENT_OAUTH_AUTHKEY: true
              with:
                  version: 1.42.0
                  authkey: ${{ secrets.TAILSCALE_OAUTH_SECRET }}
                  args: --advertise-tags tag:github-runner

            - name: Delete hobby deployment
              id: cleanup
              run: |
                  aws eks update-kubeconfig --name "posthog-dev"
                  kubectl config set-cluster arn:aws:eks:us-east-1:169684386827:cluster/posthog-dev --server=https://eks-posthog-dev --tls-server-name 8BD6E1D2FEBDE47C8177E29CAC9E6C61.gr7.us-east-1.eks.amazonaws.com

                  export PR_NUM=${{ github.event.number }}
                  export BRANCH_NAME=${{ github.head_ref }}
                  export BRANCH_NAME_HASH=$(echo -n ${{ github.head_ref }} | md5sum | cut -c 1-8)
                  export HOSTNAME=pr-$PR_NUM-${BRANCH_NAME_HASH}
                  export HOSTNAME=${HOSTNAME:0:38}
                  export HOSTNAME=${HOSTNAME%%-}
                  export NAMESPACE="hobby"
                  export REGISTRY_URL=${{ steps.aws-ecr.outputs.registry }}/pr-test
                  export DOCKER_TAG=${{ github.event.pull_request.head.sha }}

                  envsubst < .github/pr-deploy/hobby.yaml.tmpl > .github/pr-deploy/hobby.yaml

                  #Clean and deploy
                  kubectl -n $NAMESPACE delete -f .github/pr-deploy/hobby.yaml || true

            - name: delete deployment
              uses: bobheadxi/deployments@v1.4.0
              id: deployment
              with:
                  step: deactivate-env
                  env: pr-${{ github.head_ref }}
                  ref: ${{ github.head_ref }}