package nodeinstall

import (
	"fmt"
	"strings"

	"github.com/orohi/vpn-panel/internal/models"
)

const AgentVersion = "0.3.0"

func ComposeYAML(n *models.Node) string {
	return fmt.Sprintf(`services:
  vpn-node:
    container_name: vpn-panel-node
    image: alpine:3.21
    restart: unless-stopped
    network_mode: host
    environment:
      NODE_NAME: %q
      NODE_PORT: %q
      SECRET_KEY: %q
      AGENT_VERSION: %q
      DATA_DIR: /var/lib/vpn-node
      HOST_DATA_DIR: /opt/vpn-panel-node/data
    volumes:
      - ./vpn-node:/usr/local/bin/vpn-node:ro
      - ./data:/var/lib/vpn-node
      - /var/run/docker.sock:/var/run/docker.sock
    command: ["sh", "-c", "apk add --no-cache docker-cli >/dev/null && exec /usr/local/bin/vpn-node"]
`, n.Name, fmt.Sprintf("%d", n.NodePort), n.SecretKey, AgentVersion)
}

func ManualInstallScript(n *models.Node) string {
	compose := ComposeYAML(n)
	var b strings.Builder
	b.WriteString("#!/usr/bin/env bash\n")
	b.WriteString("set -euo pipefail\n\n")
	b.WriteString("sudo curl -fsSL https://get.docker.com | sh\n")
	b.WriteString("sudo mkdir -p /opt/vpn-panel-node/data\n")
	b.WriteString("cd /opt/vpn-panel-node\n\n")
	b.WriteString("cat > docker-compose.yml <<'EOF'\n")
	b.WriteString(compose)
	b.WriteString("EOF\n\n")
	b.WriteString("# Скопируйте бинарник vpn-node (linux amd64) в /opt/vpn-panel-node/vpn-node\n")
	b.WriteString("# chmod +x /opt/vpn-panel-node/vpn-node\n")
	b.WriteString("# docker compose up -d && docker compose logs -f -t\n")
	b.WriteString("\necho \"NODE_PORT=")
	b.WriteString(fmt.Sprintf("%d", n.NodePort))
	b.WriteString(" — откройте его только для IP панели\"\n")
	return b.String()
}