name: Remote Deployment Pipeline

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

env:
  REMOTE_DEPLOY_PATH: /tmp/app           # Change to your remote deploy base path
  SSH_HOST: ${{ secrets.SSH_HOST }}
  SSH_USER: ${{ secrets.SSH_USER }}
  SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
  SSH_PORT: ${{ secrets.SSH_PORT || 22 }}    # Default to port 22 if not set

jobs:
  prepare_deployment_vars:
    name: Prepare deployment vars
    runs-on: ubuntu-latest
    outputs:
      deploy_path: ${{ steps.set-vars.outputs.deploy_path }}
    steps:
      - name: Set deployment variables
        id: set-vars
        run: |
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
            DEPLOY_DIR_NAME="pr-${{ github.event.pull_request.number }}"
          else
            DEPLOY_DIR_NAME="main"
          fi
          echo "DEPLOY_PATH=${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: |
      (github.event_name == 'pull_request' && github.event.action != 'closed' && github.event.pull_request.merged == false)
      || github.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
          chmod 700 ~/.ssh
          echo "Scanning SSH host key for $SSH_HOST:$SSH_PORT..."
          ssh-keyscan -p "$SSH_PORT" -T 10 -H "$SSH_HOST" >> ~/.ssh/known_hosts 2>/dev/null || {
            echo "::error::Failed to ssh-keyscan $SSH_HOST:$SSH_PORT"
            exit 1
          }
          chmod 644 ~/.ssh/known_hosts

      - name: Create directory on remote
        run: ssh -p "$SSH_PORT" $SSH_USER@$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: |
      (github.event_name == 'pull_request' && github.event.action != 'closed' && github.event.pull_request.merged == false)
      || github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4

      - name: asd
        run:
          ls -alh

      - name: Sync files via scp
        uses: appleboy/scp-action@master
        with:
          host: ${{ env.SSH_HOST }}
          username: ${{ env.SSH_USER }}
          key: ${{ env.SSH_PRIVATE_KEY }}
          port: ${{ env.SSH_PORT }}
          source: "./"
          target: "${{ needs.prepare_deployment_vars.outputs.deploy_path }}"
          debug: true
          # The 'exclude' parameter is supported and should be kept
          # exclude: |
          #   .git/
          #   .github/
          #   node_modules/

  run_docker_compose:
    name: Run docker-compose remotely
    runs-on: ubuntu-latest
    needs: sync_repo_files
    if: |
      (github.event_name == 'pull_request' && github.event.action != 'closed' && github.event.pull_request.merged == false)
      || github.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
          chmod 700 ~/.ssh
          echo "Scanning SSH host key for $SSH_HOST:$SSH_PORT..."
          ssh-keyscan -p "$SSH_PORT" -T 10 -H "$SSH_HOST" >> ~/.ssh/known_hosts 2>/dev/null || {
            echo "::error::Failed to ssh-keyscan $SSH_HOST:$SSH_PORT"
            exit 1
          }
          chmod 644 ~/.ssh/known_hosts

      - name: Run docker-compose on remote host
        run: ssh -p "$SSH_PORT" $SSH_USER@$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: |
      github.event_name == 'pull_request' && 
      (github.event.action == 'closed' || github.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
          chmod 700 ~/.ssh
          echo "Scanning SSH host key for $SSH_HOST:$SSH_PORT..."
          ssh-keyscan -p "$SSH_PORT" -T 10 -H "$SSH_HOST" >> ~/.ssh/known_hosts 2>/dev/null || {
            echo "::error::Failed to ssh-keyscan $SSH_HOST:$SSH_PORT"
            exit 1
          }
          chmod 644 ~/.ssh/known_hosts

      - name: Delete deployment directory
        run: |
          ssh -p "$SSH_PORT" $SSH_USER@$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"