name: Deploy to GKE

on:
  workflow_dispatch:
    inputs:
      service_name:
        description: 'Name of the Kubernetes service to deploy'
        required: true
        type: string
      cluster_name:
        description: 'Name of the GKE cluster'
        required: true
        type: string

jobs:
  deploy:
    runs-on: ubuntu-latest

    env:
      PROJECT_ID: ${{ secrets.GCP_PROJECT_ID }}
      REGION: ${{ secrets.GCP_REGION }}
      GKE_CLUSTER: ${{ github.event.inputs.cluster_name }}
      SERVICE_NAME: ${{ github.event.inputs.service_name }}

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

      - name: Authenticate to Google Cloud
        uses: google-github-actions/auth@v2
        with:
          credentials_json: ${{ secrets.GCP_SA_KEY }}

      - name: Set up GKE credentials
        uses: google-github-actions/get-gke-credentials@v1
        with:
          cluster_name: ${{ env.GKE_CLUSTER }}
          location: ${{ env.REGION }}
          project_id: ${{ env.PROJECT_ID }}

      - name: Deploy to GKE
        run: |
          echo "Deploying service $SERVICE_NAME to cluster $GKE_CLUSTER"
          kubectl set image deployment/$SERVICE_NAME $SERVICE_NAME=gcr.io/$PROJECT_ID/$SERVICE_NAME:latest --record