package setting

import (
	"fmt"
	"os"

	"github.com/rancher/norman/httperror"
	"github.com/rancher/norman/store/transform"
	"github.com/rancher/norman/types"
	"github.com/rancher/norman/types/convert"
	"github.com/rancher/norman/types/slice"
	"github.com/rancher/rancher/pkg/api/customization/setting"
	"github.com/rancher/rancher/pkg/settings"
)

type Store struct {
	types.Store
}

func New(store types.Store) types.Store {
	return &Store{
		&transform.Store{
			Store: store,
			Transformer: func(apiContext *types.APIContext, schema *types.Schema, data map[string]interface{}, opt *types.QueryOptions) (map[string]interface{}, error) {
				v, ok := data["value"]
				id := convert.ToString(data["id"])
				value, ok2 := os.LookupEnv(settings.GetEnvKey(id))
				switch {
				case ok2:
					data["value"] = value
					data["customized"] = false
					data["source"] = "env"

				case !ok || v == "":
					data["value"] = data["default"]
					data["customized"] = false
					data["source"] = "default"
				default:
					data["customized"] = true
					data["source"] = "db"
				}
				return data, nil
			},
		},
	}
}

func (s *Store) Delete(apiContext *types.APIContext, schema *types.Schema, id string) (map[string]interface{}, error) {
	if slice.ContainsString(setting.ReadOnlySettings, id) {
		return nil, httperror.NewAPIError(httperror.MethodNotAllowed, fmt.Sprintf("Cannot delete readOnly setting %s.", id))
	}

	return s.Store.Delete(apiContext, schema, id)
}