// Copyright (c) 2017 VMware, Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dao

import (
	"fmt"

	"github.com/astaxie/beego/orm"
	"github.com/goharbor/harbor/src/common/models"
)

// GetUserProjectRoles returns roles that the user has according to the project.
func GetUserProjectRoles(userID int, projectID int64, entityType string) ([]models.Role, error) {

	o := GetOrmer()

	sql := `select *
		from role
		where role_id = 
			(
				select role
				from project_member
				where project_id = ? and entity_id = ? and entity_type = 'u'
			)`

	var roleList []models.Role
	_, err := o.Raw(sql, projectID, userID).QueryRows(&roleList)

	if err != nil {
		return nil, err
	}
	return roleList, nil
}

// IsAdminRole returns whether the user is admin.
func IsAdminRole(userIDOrUsername interface{}) (bool, error) {
	u := models.User{}

	switch v := userIDOrUsername.(type) {
	case int:
		u.UserID = v
	case string:
		u.Username = v
	default:
		return false, fmt.Errorf("invalid parameter, only int and string are supported: %v", userIDOrUsername)
	}

	if u.UserID == NonExistUserID && len(u.Username) == 0 {
		return false, nil
	}

	user, err := GetUser(u)
	if err != nil {
		return false, err
	}

	if user == nil {
		return false, nil
	}

	return user.HasAdminRole, nil
}

// GetRoleByID ...
func GetRoleByID(id int) (*models.Role, error) {
	o := GetOrmer()

	sql := `select *
		from role
		where role_id = ?`

	var role models.Role
	if err := o.Raw(sql, id).QueryRow(&role); err != nil {
		if err == orm.ErrNoRows {
			return nil, nil
		}
		return nil, err
	}
	return &role, nil
}