package miner

import (
	"os/exec"
	"strings"
)

// DetectContainerRuntime probes docker then podman CLIs.
func DetectContainerRuntime() ContainerRuntimeInfo {
	for _, cli := range []string{"docker", "podman"} {
		if path, err := exec.LookPath(cli); err == nil {
			out, runErr := exec.Command(path, "version", "--format", "{{.Server.Version}}").CombinedOutput()
			version := strings.TrimSpace(string(out))
			if runErr != nil || version == "" {
				// Older docker without --format still counts as available.
				if _, verErr := exec.Command(path, "version").CombinedOutput(); verErr == nil {
					return ContainerRuntimeInfo{Available: true, CLI: cli, Version: "unknown"}
				}
				continue
			}
			return ContainerRuntimeInfo{Available: true, CLI: cli, Version: version}
		}
	}
	return ContainerRuntimeInfo{}
}