name: Docker Build, Push, and Deploy to Portainer

on:
  push:
    branches:
      - main

env:
  REGISTRY_TOKEN: ${{ secrets.GLOBAL_PACKAGE_TOKEN }}
  REGISTRY_USER: ${{ vars.GLOBAL_ACCOUNT_EMAIL }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    name: Build and Push Docker Image
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Login to Gitea Package Regsitry
        uses: docker/login-action@v3
        with:
          registry: ${{ vars.REGISTRY_URL }}
          username: ${{ env.REGISTRY_USER }}
          password: ${{ env.REGISTRY_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and Push Docker Image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: |
            ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:latest
            ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:${{ gitea.sha }}
      
      - name: Logout from Gitea Package Regsitry
        if: always()
        run: docker logout ${{vars.REGISTRY_URL}}

  deploy-to-portainer:
    runs-on: ubuntu-latest
    name: Deploy Application to Portainer
    needs: build-and-push

    env:
      PORTAINER_URL: ${{ secrets.PORTAINER_URL }}
      PORTAINER_API_KEY: ${{ secrets.PORTAINER_API_KEY }}
      PORTAINER_ENVIRONMENT_ID: ${{ secrets.PORTAINER_ENVIRONMENT_ID }}
      IMAGE_TO_DEPLOY: ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:latest
      CONTAINER_NAME: ${{ vars.PORTAINER_CONTAINER_NAME || 'deep-research' }} # Name of the container in Portainer
      HOST_PORT: "8005" # Host port to map to container's 3000
      CONTAINER_PORT: "3000" # Container port
      RESTART_POLICY: "unless-stopped"
      # For curl: -k allows insecure connections (e.g. self-signed certs). Omit for production with valid certs.
      # CURL_OPTS: "-s -k" # If you need -k
      CURL_OPTS: "-s" # Silent mode

    steps:
      - name: Deploy Container to Portainer via API
        run: |
          set -e # Exit immediately if a command exits with a non-zero status.
          echo "Starting deployment of image ${{ env.IMAGE_TO_DEPLOY }} as container ${{ env.CONTAINER_NAME }}"

          PORTAINER_API_DOCKER_BASE="${{ env.PORTAINER_URL }}/api/endpoints/${{ env.PORTAINER_ENVIRONMENT_ID }}/docker"
          AUTH_HEADER="X-API-Key: ${{ env.PORTAINER_API_KEY }}"

          # 1. Find existing container by name
          echo "Searching for existing container named '${{ env.CONTAINER_NAME }}'..."
          # Portainer API often prepends '/' to container names in the .Names field.
          # Using jq to filter based on any name in the .Names array matching /<CONTAINER_NAME>
          EXISTING_CONTAINER_ID=$(curl ${{ env.CURL_OPTS }} -H "$AUTH_HEADER" \
            "${PORTAINER_API_DOCKER_BASE}/containers/json?all=true" | \
            jq -r --arg CN "/${{ env.CONTAINER_NAME }}" '.[] | select(.Names[] | contains($CN)) | .Id' | head -n 1)

          # 2. If container exists, stop and remove it
          if [ -n "$EXISTING_CONTAINER_ID" ]; then
            echo "Found existing container '${{ env.CONTAINER_NAME }}' with ID '$EXISTING_CONTAINER_ID'."
            echo "Stopping container..."
            curl ${{ env.CURL_OPTS }} -X POST -H "$AUTH_HEADER" "${PORTAINER_API_DOCKER_BASE}/containers/${EXISTING_CONTAINER_ID}/stop"
            echo "Waiting for container to stop..."
            sleep 5 # Adjust sleep time as needed
            echo "Removing container..."
            curl ${{ env.CURL_OPTS }} -X DELETE -H "$AUTH_HEADER" "${PORTAINER_API_DOCKER_BASE}/containers/${EXISTING_CONTAINER_ID}"
            echo "Container '${{ env.CONTAINER_NAME }}' removed."
          else
            echo "No existing container named '${{ env.CONTAINER_NAME }}' found."
          fi

          # 3. Create new container
          echo "Creating new container '${{ env.CONTAINER_NAME }}' with image '${{ env.IMAGE_TO_DEPLOY }}'..."
          CREATE_PAYLOAD=$(cat <<EOF
          {
            "Image": "${{ env.IMAGE_TO_DEPLOY }}",
            "ExposedPorts": {
              "${{ env.CONTAINER_PORT }}/tcp": {}
            },
            "HostConfig": {
              "PortBindings": {
                "${{ env.CONTAINER_PORT }}/tcp": [ { "HostIp": "0.0.0.0", "HostPort": "${{ env.HOST_PORT }}" } ]
              },
              "RestartPolicy": { "Name": "${{ env.RESTART_POLICY }}", "MaximumRetryCount": 0 }
            }
          }
          EOF
          )

          CREATE_RESPONSE=$(curl ${{ env.CURL_OPTS }} -X POST -H "$AUTH_HEADER" -H "Content-Type: application/json" \
            --data "$CREATE_PAYLOAD" \
            "${PORTAINER_API_DOCKER_BASE}/containers/create?name=${{ env.CONTAINER_NAME }}")

          NEW_CONTAINER_ID=$(echo "$CREATE_RESPONSE" | jq -r '.Id')
          WARNINGS=$(echo "$CREATE_RESPONSE" | jq -r '.Warnings // empty') # Handle null warnings

          if [ -z "$NEW_CONTAINER_ID" ] || [ "$NEW_CONTAINER_ID" == "null" ]; then
            echo "Failed to create container '${{ env.CONTAINER_NAME }}'."
            echo "Response from Portainer API: $CREATE_RESPONSE"
            exit 1
          fi
          echo "Container '${{ env.CONTAINER_NAME }}' created successfully with ID '$NEW_CONTAINER_ID'."
          if [ -n "$WARNINGS" ]; then
            echo "Warnings from Portainer during creation: $WARNINGS"
          fi

          # 4. Start the new container
          echo "Starting container '${{ env.CONTAINER_NAME }}' (ID: $NEW_CONTAINER_ID)..."
          # We capture HTTP code and response body separately for better error diagnosis.
          HTTP_CODE_START=$(curl ${{ env.CURL_OPTS }} -w "%{http_code}" -o /tmp/portainer_start_response.txt -X POST \
            -H "$AUTH_HEADER" \
            "${PORTAINER_API_DOCKER_BASE}/containers/${NEW_CONTAINER_ID}/start")
          START_RESPONSE_BODY=$(cat /tmp/portainer_start_response.txt)

          if [ "$HTTP_CODE_START" -eq 204 ]; then
            echo "Container '${{ env.CONTAINER_NAME }}' started successfully."
          elif [ "$HTTP_CODE_START" -eq 304 ]; then # Not Modified - already started
            echo "Container '${{ env.CONTAINER_NAME }}' was already started."
          else
            echo "Failed to start container '${{ env.CONTAINER_NAME }}'. Portainer responded with HTTP code: $HTTP_CODE_START"
            echo "Response body: $START_RESPONSE_BODY"
            # Fetch logs for the container to help diagnose start issues
            sleep 2
            echo "Fetching last 20 lines of logs for container '$NEW_CONTAINER_ID':"
            curl ${{ env.CURL_OPTS }} -H "$AUTH_HEADER" \
              "${PORTAINER_API_DOCKER_BASE}/containers/${NEW_CONTAINER_ID}/logs?stdout=true&stderr=true&tail=20&timestamps=true"
            exit 1
          fi
          echo "Deployment of '${{ env.CONTAINER_NAME }}' completed."