name: Remote Deployment Pipeline

on:
  push:
    branches:
      - main
  pull_request:
    types: [opened, synchronize, reopened, closed]

env:
  REMOTE_DEPLOY_PATH: /var/www/app        # Change this to your remote deploy base path
  SSH_HOST: ${{ secrets.SSH_HOST }}
  SSH_USER: ${{ secrets.SSH_USER }}
  SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}

jobs:
  prepare_deployment_vars:
    name: Prepare deployment vars
    runs-on: ubuntu-latest
    outputs:
      deploy_path: ${{ steps.set-vars.outputs.deploy_path }}
    steps:
      - name: Set deployment variables
        id: set-vars
        run: |
          if [[ "${{ gitea.event_name }}" == "pull_request" ]]; then
            DEPLOY_DIR_NAME="pr-${{ gitea.event.pull_request.number }}"
          else
            DEPLOY_DIR_NAME="main"
          fi
          echo "DEPLOY_PATH=${REMOTE_DEPLOY_PATH}/${DEPLOY_DIR_NAME}" >> $GITHUB_ENV
          echo "deploy_path=${REMOTE_DEPLOY_PATH}/${DEPLOY_DIR_NAME}" >> $GITHUB_OUTPUT
          echo "DEPLOY_PATH will be: ${REMOTE_DEPLOY_PATH}/${DEPLOY_DIR_NAME}"

  create_remote_directory:
    name: Create remote directory
    runs-on: ubuntu-latest
    needs: prepare_deployment_vars
    if: |
      (gitea.event_name == 'pull_request' && gitea.event.action != 'closed' && gitea.event.pull_request.merged == false)
      || gitea.ref == 'refs/heads/main'
    steps:
      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ env.SSH_PRIVATE_KEY }}

      - name: Add host to known_hosts
        run: |
          mkdir -p ~/.ssh
          ssh-keyscan $SSH_HOST >> ~/.ssh/known_hosts

      - name: Create directory on remote
        run: ssh $SSH_USER@$SSH_HOST "mkdir -p ${{ needs.prepare_deployment_vars.outputs.deploy_path }}"

  sync_repo_files:
    name: Sync repository files
    runs-on: ubuntu-latest
    needs: create_remote_directory
    if: |
      (gitea.event_name == 'pull_request' && gitea.event.action != 'closed' && gitea.event.pull_request.merged == false)
      || gitea.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4

      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ env.SSH_PRIVATE_KEY }}

      - name: Add host to known_hosts
        run: |
          mkdir -p ~/.ssh
          ssh-keyscan $SSH_HOST >> ~/.ssh/known_hosts

      - name: Sync files via rsync
        run: |
          sudo apt-get update && sudo apt-get install -y rsync
          rsync -avz --delete -e "ssh" . $SSH_USER@$SSH_HOST:${{ needs.prepare_deployment_vars.outputs.deploy_path }}/

  run_docker_compose:
    name: Run docker-compose remotely
    runs-on: ubuntu-latest
    needs: sync_repo_files
    if: |
      (gitea.event_name == 'pull_request' && gitea.event.action != 'closed' && gitea.event.pull_request.merged == false)
      || gitea.ref == 'refs/heads/main'
    steps:
      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ env.SSH_PRIVATE_KEY }}

      - name: Add host to known_hosts
        run: |
          mkdir -p ~/.ssh
          ssh-keyscan $SSH_HOST >> ~/.ssh/known_hosts

      - name: Run docker-compose on remote host
        run: ssh $SSH_USER@$SSH_HOST "cd ${{ needs.prepare_deployment_vars.outputs.deploy_path }} && docker-compose up -d --build"

  cleanup_mr_environment:
    name: Cleanup MR environment
    runs-on: ubuntu-latest
    needs: prepare_deployment_vars
    if: |
      gitea.event_name == 'pull_request' && 
      (gitea.event.action == 'closed' || gitea.event.pull_request.merged == true)
    steps:
      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ env.SSH_PRIVATE_KEY }}

      - name: Add host to known_hosts
        run: |
          mkdir -p ~/.ssh
          ssh-keyscan $SSH_HOST >> ~/.ssh/known_hosts

      - name: Delete deployment directory
        run: |
          ssh $SSH_USER@$SSH_HOST "if [ -d '${{ needs.prepare_deployment_vars.outputs.deploy_path }}' ]; then rm -rf '${{ needs.prepare_deployment_vars.outputs.deploy_path }}'; echo 'Directory removed.'; else echo 'Directory not found, skipping.'; fi"