package configkit_test

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

	configkit "gitea.maximumdirect.net/eric/ConfigKit"
)

func TestFacadeNativeDiscoveryWithNestedRoot(t *testing.T) {
	root := t.TempDir()
	parts := filepath.Join(root, "nested/root/parts")
	if err := os.MkdirAll(parts, 0o700); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(parts, "value.yml"), []byte("value: 1\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	if err := os.Symlink("parts", filepath.Join(root, "nested/root/linked")); err != nil {
		t.Skipf("symlinks unavailable: %v", err)
	}
	filesystem := configkit.NewFilesystem("nested", os.DirFS(root))
	context := &configkit.FilesystemContext{FS: &filesystem, Root: "nested/root", BaseDir: "nested/root"}
	for _, selector := range []string{
		"dir: parts", "glob: 'parts/*.yml'", "dir: linked", "glob: 'lin*/*.yml'",
	} {
		t.Run(selector, func(t *testing.T) {
			result, err := configkit.Load(configkit.Bytes("main", []byte("configkit:\n  imports:\n    - "+selector+"\n")), configkit.Options[map[string]any]{Imports: true, Filesystem: context})
			if err != nil {
				t.Fatal(err)
			}
			if result.Config["value"] != int64(1) {
				t.Fatalf("configuration = %#v", result.Config)
			}
		})
	}
	if err := os.WriteFile(filepath.Join(root, "nested/outside.yml"), []byte("value: outside\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	if err := os.Symlink("../../outside.yml", filepath.Join(parts, "escape.yml")); err != nil {
		t.Fatal(err)
	}
	for _, selector := range []string{"dir: parts", "glob: 'parts/*.yml'"} {
		_, err := configkit.Load(configkit.Bytes("main", []byte("configkit:\n  imports:\n    - "+selector+"\n")), configkit.Options[map[string]any]{Imports: true, Filesystem: context})
		var loadError *configkit.LoadError
		if !errors.As(err, &loadError) || len(loadError.Diagnostics()) != 1 || loadError.Diagnostics()[0].Code != configkit.CodeImportOutsideRoot {
			t.Fatalf("escaping %s: %v", selector, err)
		}
	}
}