package git

import (
	"context"
	"fmt"
	"strings"
)

func Ignored(worktree string, paths []string) (map[string]bool, error) {
	ignored := map[string]bool{}
	if len(paths) == 0 {
		return ignored, nil
	}

	out, stderr, code, err := runCodeInput(context.Background(), worktree, nil, strings.NewReader(strings.Join(paths, "\x00")+"\x00"), "check-ignore", "--stdin", "-z")
	if err != nil {
		return nil, err
	}
	if code == 1 {
		return ignored, nil
	}
	if code != 0 {
		return nil, fmt.Errorf("git check-ignore: exit status %d: %s", code, stderr)
	}

	for _, p := range strings.Split(out, "\x00") {
		if len(p) > 0 {
			ignored[p] = true
		}
	}
	return ignored, nil
}