package cmd

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

// sshRun executes a shell command on the remote host, returning combined output.
// Uses the system ssh binary so existing keys and ~/.ssh/config are honored.
func sshRun(user, host, command string) (string, error) {
	c := exec.Command("ssh", "-o", "BatchMode=yes", user+"@"+host, command)
	out, err := c.CombinedOutput()
	if err != nil {
		trimmed := strings.TrimSpace(string(out))
		if trimmed != "" {
			return string(out), fmt.Errorf("ssh %s@%s: %s: %w", user, host, trimmed, err)
		}
		return string(out), fmt.Errorf("ssh %s@%s: command failed: %w", user, host, err)
	}
	return string(out), nil
}

// sshWriteFile writes content to a remote file, creating parent directories.
// Content is streamed via stdin to avoid shell escaping issues.
func sshWriteFile(user, host, remotePath, content string) error {
	dir := path.Dir(remotePath)
	cmd := fmt.Sprintf("mkdir -p %s && cat > %s", dir, remotePath)
	c := exec.Command("ssh", "-o", "BatchMode=yes", user+"@"+host, cmd)
	c.Stdin = strings.NewReader(content)
	if out, err := c.CombinedOutput(); err != nil {
		return fmt.Errorf("writing %s on %s@%s: %s: %w",
			remotePath, user, host, strings.TrimSpace(string(out)), err)
	}
	return nil
}