/*
Copyright 2023 The Kubernetes Authors.

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 sts

import (
	"net/http"
	"net/url"
	"time"

	"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/volcengine/volc-sdk-golang/base"
)

const (
	DefaultRegion          = "cn-north-1"
	ServiceVersion20180101 = "2018-01-01"
	ServiceName            = "sts"
)

var (
	ServiceInfo = &base.ServiceInfo{
		Timeout: 5 * time.Second,
		Host:    "open.volcengineapi.com",
		Header: http.Header{
			"Accept": []string{"application/json"},
		},
	}

	ApiInfoList = map[string]*base.ApiInfo{
		"AssumeRole": {
			Method: http.MethodGet,
			Path:   "/",
			Query: url.Values{
				"Action":  []string{"AssumeRole"},
				"Version": []string{ServiceVersion20180101},
			},
		},
	}
)

// DefaultInstance 默认的实例
var DefaultInstance = NewInstance()

// IAM .
type STS struct {
	Client *base.Client
}

// NewInstance 创建一个实例
func NewInstance() *STS {
	instance := &STS{}
	instance.Client = base.NewClient(ServiceInfo, ApiInfoList)
	instance.Client.ServiceInfo.Credentials.Service = ServiceName
	instance.Client.ServiceInfo.Credentials.Region = DefaultRegion
	return instance
}

// GetServiceInfo interface
func (p *STS) GetServiceInfo() *base.ServiceInfo {
	return p.Client.ServiceInfo
}

// GetAPIInfo interface
func (p *STS) GetAPIInfo(api string) *base.ApiInfo {
	if apiInfo, ok := ApiInfoList[api]; ok {
		return apiInfo
	}
	return nil
}

// SetHost .
func (p *STS) SetRegion(region string) {
	p.Client.ServiceInfo.Credentials.Region = region
}

// SetHost .
func (p *STS) SetHost(host string) {
	p.Client.ServiceInfo.Host = host
}

// SetSchema .
func (p *STS) SetSchema(schema string) {
	p.Client.ServiceInfo.Scheme = schema
}