package git

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

type CommitInfo struct {
	ShortSHA string
	Message  string
}

func GetCommitInfo(rootDir string) *CommitInfo {
	cmd := exec.Command("git", "-C", rootDir, "log", "-1", "--format=%h %s")
	output, err := cmd.Output()
	if err != nil {
		return nil
	}

	parts := strings.SplitN(strings.TrimSpace(string(output)), " ", 2)
	if len(parts) < 2 {
		return nil
	}

	return &CommitInfo{
		ShortSHA: parts[0],
		Message:  parts[1],
	}
}

func FormatCommitLine(info *CommitInfo) string {
	if info == nil {
		return ""
	}
	return fmt.Sprintf("> Commit: %s (%s)\n", info.ShortSHA, info.Message)
}