name: Build-Push-Deploy-Docker-Image
on:
  workflow_dispatch:
    inputs:
      imageTag:
        description: "Image Tag"
        required: true
        default: "0.0.0"
      action:
        description: "Both runs CI/CD Stages"
        required: true
        default: "both"
jobs:
  build:
    if: inputs.action == 'both'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_PASS }}
      - name: Prep Docker Image (Metadata)
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: # <specify the image name>
          tags: ${{ inputs.imageTag }} # Tag
      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          context: ./
          platforms: linux/amd64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

  deployAnsible:
    if: inputs.action == 'both'
    needs: build
    runs-on: ubuntu-latest
    env: 
      SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }} 
      NEW_IMAGE_TAG: app:${{ inputs.imageTag }}
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/ansible
        with: 
          playbook: ./.github/ansible/playbook.yml
          inventory: ./.github/ansible/inventory

  testDeployAnsible:
    if: inputs.action == 'test-cd'
    runs-on: ubuntu-latest
    env: 
      SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }} 
      NEW_IMAGE_TAG: app:${{ inputs.imageTag }}
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/ansible
        with: 
          playbook: ./.github/ansible/playbook.yml
          inventory: ./.github/ansible/inventory


#./.github/ansible/playbook.yml
---
- hosts: all
  remote_user: deploy
  gather_facts: false

  pre_tasks:
    - name: Loading environment variables
      tags: always
      set_fact:
        SSH_PRIVATE_KEY: "{{ lookup('env', 'SSH_PRIVATE_KEY') }}"
        NEW_IMAGE_TAG: "{{ lookup('env', 'NEW_IMAGE_TAG') }}"

  tasks:
    - name: create .ssh directory
      file:
        path: /root/.ssh/
        state: directory
        mode: '0600'
      delegate_to: localhost
      delegate_facts: true

    - name: Write SSH Key 
      copy:
        content: "{{ SSH_PRIVATE_KEY }}"
        dest: /root/.ssh/ansible_key
        mode: 0400 
      delegate_to: localhost
      delegate_facts: true

    - name: Get hostname
      shell: echo "$(hostname)"
      register: result

    ### Actual Deploy of the app new version
    - name: Backup Stack File
      shell: "cp -vf /home/deploy/<app>/<stack>.yaml /home/deploy/<app>/<stack>.yaml.bak"
      when:  result.stdout == "<hostname>"

    - name: Modify the App Version
      shell: sed -i -E 's/app:[0-9\.]+/{{ NEW_IMAGE_TAG }}/g' /home/deploy/<app>/<stack>.yaml
      when:  result.stdout == "<hostname>"

    - name: Restart Stack to Pull Image
      shell: "docker stack deploy -c /home/deploy/<app>/<stack>.yaml <app>-stack --with-registry-auth"
      when:  result.stdout == "<hostname>"

    - name: Sleep for 10 seconds 
      ansible.builtin.wait_for:
        timeout: 10
      delegate_to: localhost

    - name:  List the deployed Docker Swarm Serv
      shell: "docker service ls"
      when:  result.stdout == "<hostname>"

    - name:  List the deployed Docker Swarm Serv
      shell: "docker ps -a --filter status=running"
      when:  result.stdout == "<hostname>"