package infra

import (
	"fmt"
	"os/exec"
	"strings"
)

// DeployAppRemote orquesta el deploy continuo de una app a un VPS remoto.
// Pasos: verificar SSH → build local → rsync → restart systemd → health check.
func DeployAppRemote(conn SSHConn, cfg DeployConfig) error {
	// 1. Verificar conectividad SSH
	if err := SSHCheck(conn); err != nil {
		return fmt.Errorf("deploy_app_remote: ssh check: %w", err)
	}

	// 2. Build local (si hay comando de build)
	if cfg.BuildCmd != "" {
		cmd := exec.Command("bash", "-c", cfg.BuildCmd)
		cmd.Dir = cfg.LocalDir
		out, err := cmd.CombinedOutput()
		if err != nil {
			return fmt.Errorf("deploy_app_remote: build failed: %s\n%s", err, strings.TrimSpace(string(out)))
		}
	}

	// 3. Subir binario compilado
	if err := uploadAppFiles(conn, cfg); err != nil {
		return fmt.Errorf("deploy_app_remote: upload: %w", err)
	}

	// 4. Restart systemd service
	if err := SystemdRestart(conn, cfg.AppName); err != nil {
		return fmt.Errorf("deploy_app_remote: restart: %w", err)
	}

	// 5. Health check (si está configurado)
	if cfg.HealthPath != "" && cfg.Port > 0 {
		url := fmt.Sprintf("http://%s:%d%s", conn.Host, cfg.Port, cfg.HealthPath)
		if err := HealthCheckHTTP(url, 30, 2000); err != nil {
			return fmt.Errorf("deploy_app_remote: health check: %w", err)
		}
	}

	return nil
}