package infra

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

// DockerContainerLogs obtiene los logs de un contenedor. tail limita las últimas N líneas (0 = todas).
func DockerContainerLogs(nameOrID string, tail int) (string, error) {
	args := []string{"logs"}
	if tail > 0 {
		args = append(args, "--tail", strconv.Itoa(tail))
	}
	args = append(args, nameOrID)

	out, err := exec.Command("docker", args...).CombinedOutput()
	if err != nil {
		return "", fmt.Errorf("docker logs %s: %w", nameOrID, err)
	}

	return string(out), nil
}