package app

import (
	"os"
	"path/filepath"
	"testing"
)

func TestResolveOutputDirRejectsDanglingSymlinkComponents(t *testing.T) {
	workingDir := t.TempDir()
	dangling := filepath.Join(workingDir, "dangling")
	if err := os.Symlink(filepath.Join(workingDir, "missing"), dangling); err != nil {
		t.Fatal(err)
	}

	for _, directory := range []string{dangling, filepath.Join(dangling, "reports")} {
		t.Run(filepath.Base(directory), func(t *testing.T) {
			if _, err := resolveOutputDir(workingDir, directory); err == nil {
				t.Fatalf("resolveOutputDir(%q) error = nil, want dangling symlink error", directory)
			}
		})
	}
}

func TestResolveOutputDirAllowsMissingDirectoryBelowValidSymlink(t *testing.T) {
	workingDir := t.TempDir()
	target := t.TempDir()
	link := filepath.Join(workingDir, "linked")
	if err := os.Symlink(target, link); err != nil {
		t.Fatal(err)
	}

	directory := filepath.Join(link, "reports")
	got, err := resolveOutputDir(workingDir, directory)
	if err != nil || got != directory {
		t.Fatalf("resolveOutputDir() = %q, %v, want %q, nil", got, err, directory)
	}
}