package configuration

import (
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-framework/baize/framework/gateway"
	"git.sxidc.com/go-tools/utils/strutils"
	"git.sxidc.com/service-supports/fserr"
	"net/http"
	"net/url"
	"sync"
)

type Option func(options *Options)

type Options struct {
	serviceApiVersion string
}

func WithServiceApiVersion(serviceApiVersion string) Option {
	return func(options *Options) {
		options.serviceApiVersion = serviceApiVersion
	}
}

var serviceBaseUrlMap sync.Map

func RegisterService(serviceShortName string, baseUrl string) {
	serviceBaseUrlMap.Store(serviceShortName, baseUrl)
}

func BuildGateway(builder *gateway.Builder, opts ...Option) {
	options := new(Options)

	for _, opt := range opts {
		opt(options)
	}

	// 创建
	builder.
		Url(http.MethodPost, "/configuration/create").
		Post(gateway.NewPostRequest("",
			gateway.PostRequestWithUrlTransferFunc(
				func(c *api.Context, _ string, historyRequest []gateway.BuilderRequest, resultMap map[string]any) (string, error) {
					jsonBody, err := c.GetJsonBody()
					if err != nil {
						return "", err
					}

					serviceShortName, ok := jsonBody.Get("serviceShortName").(string)
					if !ok {
						return "", fserr.New("没有传递服务名缩写或服务名缩写不是string类型")
					}

					jsonBody.Delete("serviceShortName")

					serviceBaseUrl, loaded := serviceBaseUrlMap.Load(serviceShortName)
					if !loaded {
						return "", fserr.New("没有注册对应的服务: " + serviceShortName)
					}

					var serviceUrl string

					if strutils.IsStringEmpty(options.serviceApiVersion) {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", "/configuration/create")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					} else {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", options.serviceApiVersion, "/configuration/create")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					}

					return serviceUrl, nil
				})), nil).
		Build()

	// 删除
	builder.
		Url(http.MethodPost, "/configuration/delete").
		Post(gateway.NewPostRequest("",
			gateway.PostRequestWithUrlTransferFunc(
				func(c *api.Context, _ string, historyRequest []gateway.BuilderRequest, resultMap map[string]any) (string, error) {
					jsonBody, err := c.GetJsonBody()
					if err != nil {
						return "", err
					}

					serviceShortName, ok := jsonBody.Get("serviceShortName").(string)
					if !ok {
						return "", fserr.New("没有传递服务名缩写或服务名缩写不是string类型")
					}

					jsonBody.Delete("serviceShortName")

					serviceBaseUrl, loaded := serviceBaseUrlMap.Load(serviceShortName)
					if !loaded {
						return "", fserr.New("没有注册对应的服务: " + serviceShortName)
					}

					var serviceUrl string

					if strutils.IsStringEmpty(options.serviceApiVersion) {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", "/configuration/delete")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					} else {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", options.serviceApiVersion, "/configuration/delete")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					}

					return serviceUrl, nil
				})), nil).
		Build()

	// 查询
	builder.
		Url(http.MethodGet, "/configuration/values").
		Get(gateway.NewGetRequest("",
			gateway.GetRequestWithUrlTransferFunc(
				func(c *api.Context, _ string, historyRequest []gateway.BuilderRequest, resultMap map[string]any) (string, error) {
					queryParams := c.GetQueryParams()

					serviceShortName := queryParams.Get("serviceShortName")
					if strutils.IsStringEmpty(serviceShortName) {
						return "", fserr.New("没有传递服务名缩写")
					}

					queryParams.Delete("serviceShortName")

					serviceBaseUrl, loaded := serviceBaseUrlMap.Load(serviceShortName)
					if !loaded {
						return "", fserr.New("没有注册对应的服务: " + serviceShortName)
					}

					var serviceUrl string

					if strutils.IsStringEmpty(options.serviceApiVersion) {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", "/configuration/values")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					} else {
						innerServiceUrl, err := url.JoinPath(serviceBaseUrl.(string), serviceShortName, "/api", options.serviceApiVersion, "/configuration/values")
						if err != nil {
							return "", err
						}

						serviceUrl = innerServiceUrl
					}

					return serviceUrl, nil
				})), nil).
		Build()
}