# This workflow will build and push an application to a Azure Kubernetes Service (AKS) cluster when you push your code
#
# This workflow assumes you have already created the target AKS cluster and have created an Azure Container Registry (ACR)
# For instructions see https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough-portal
# https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-portal
# https://github.com/Azure/aks-create-action
#
# To configure this workflow:
#
# 1. Set the following secrets in your repository:
#    - AZURE_CREDENTIALS (instructions for getting this https://github.com/Azure/login#configure-a-service-principal-with-a-secret)
#
# 2. Set the following environment variables (or replace the values below):
#    - AZURE_CONTAINER_REGISTRY (name of your container registry)
#    - PROJECT_NAME
#    - RESOURCE_GROUP (where your cluster is deployed)
#    - CLUSTER_NAME (name of your AKS cluster)
#
# 3. Choose the approrpiate render engine for the bake step https://github.com/Azure/k8s-bake. The config below assumes helm, then set
#    any needed environment variables such as:
#    - CHART_PATH 
#    - CHART_OVERRIDE_PATH
#
# For more information on GitHub Actions for Azure, refer to https://github.com/Azure/Actions
# For more samples to get started with GitHub Action workflows to deploy to Azure, refer to https://github.com/Azure/actions-workflow-samples
# For more options with the actions used below please see the folllowing
# https://github.com/Azure/login
# https://github.com/Azure/aks-set-context
# https://github.com/marketplace/actions/azure-cli-action
# https://github.com/Azure/k8s-bake
# https://github.com/Azure/k8s-deploy   

on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    
    - name: Azure Login
      uses: azure/login@v1
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}
    
    - name: Build image on ACR
      uses: azure/CLI@v1
      with:
        azcliversion: 2.29.1
        inlineScript: |
          az configure --defaults acr=${{ env.AZURE_CONTAINER_REGISTRY }}
          az acr build -t  -t ${{ env.AZURE_CONTAINER_REGISTRY }}.azurecr.io/${{ env.PROJECT_NAME }}:${{ github.sha }}
    
    - name: Gets K8s context
      uses: azure/aks-set-context@v1
      with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}
          resource-group: ${{ env.RESOURCE_GROUP }}
          cluster-name: ${{ env.CLUSTER_NAME }}
      id: login

    - name: Configure deployment
      uses: azure/k8s-bake@v1
      with:
        renderEngine: 'helm'
        helmChart: ${{ env.CHART_PATH }}
        overrideFiles: ${{ env.CHART_OVERRIDE_PATH }}
        overrides: |     
          replicas:2
        helm-version: 'latest' 
      id: bake

    - name: Deploys application
    - uses: Azure/k8s-deploy@v1
      with:
        manifests: ${{ steps.bake.outputs.manifestsBundle }}
        images: |
          ${{ env.AZURE_CONTAINER_REGISTRY }}.azurecr.io/${{ env.PROJECT_NAME }}:${{ github.sha }}
        imagepullsecrets: |
          ${{ env.PROJECT_NAME }}