package gwtools

import (
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-framework/baize/framework/gateway"
	"net/http"
)

func PostPassThrough(builder *gateway.Builder, params *SimplePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPost, middlewares...)
}

func DeletePassThrough(builder *gateway.Builder, params *SimplePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodDelete, middlewares...)
}

func PutPassThrough(builder *gateway.Builder, params *SimplePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPut, middlewares...)
}

func GetPassThrough(builder *gateway.Builder, params *SimplePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodGet, middlewares...)
}

func PassThrough(builder *gateway.Builder, params *PassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, middlewares...)
}

func OnePostPassThrough(builder *gateway.Builder, params *SimpleOnePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPost, middlewares...)
}

func OneDeletePassThrough(builder *gateway.Builder, params *SimpleOnePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodDelete, middlewares...)
}

func OnePutPassThrough(builder *gateway.Builder, params *SimpleOnePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPut, middlewares...)
}

func OneGetPassThrough(builder *gateway.Builder, params *SimpleOnePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodGet, middlewares...)
}

func OnePassThrough(builder *gateway.Builder, params *OnePassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, middlewares...)
}

func PostCommonPassThrough(builder *gateway.Builder, params *SimpleCommonPassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPost, middlewares...)
}

func DeleteCommonPassThrough(builder *gateway.Builder, params *SimpleCommonPassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodDelete, middlewares...)
}

func PutCommonPassThrough(builder *gateway.Builder, params *SimpleCommonPassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodPut, middlewares...)
}

func GetCommonPassThrough(builder *gateway.Builder, params *SimpleCommonPassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, http.MethodGet, middlewares...)
}

func CommonPassThrough(builder *gateway.Builder, params *CommonPassThroughParams, middlewares ...api.Handler) {
	params.passThrough(builder, middlewares...)
}

type PassThroughRequestItem struct {
	Request  gateway.BuilderRequest
	Callback gateway.RequestCallbackFunc
}

type SimplePassThroughParams struct {
	RelativePath string
	Request      gateway.BuilderRequest
}

func (params *SimplePassThroughParams) passThrough(builder *gateway.Builder, httpMethod string, middlewares ...api.Handler) {
	passThroughParams := &PassThroughParams{
		HttpMethod:              httpMethod,
		SimplePassThroughParams: params,
	}

	passThroughParams.passThrough(builder, middlewares...)
}

type PassThroughParams struct {
	HttpMethod string
	*SimplePassThroughParams
}

func (params *PassThroughParams) passThrough(builder *gateway.Builder, middlewares ...api.Handler) {
	copyBuilder := builder.Url(params.HttpMethod, params.RelativePath)

	switch req := params.Request.(type) {
	case *gateway.PostRequest:
		copyBuilder = copyBuilder.Post(req, nil)
	case *gateway.DeleteRequest:
		copyBuilder = copyBuilder.Delete(req, nil)
	case *gateway.PutRequest:
		copyBuilder = copyBuilder.Put(req, nil)
	case *gateway.GetRequest:
		copyBuilder = copyBuilder.Get(req, nil)
	default:
		panic("不支持的请求类型")
	}

	copyBuilder.Build(middlewares...)
}

type SimpleOnePassThroughParams struct {
	RelativePath string
	RequestItem  *PassThroughRequestItem
}

func (params *SimpleOnePassThroughParams) passThrough(builder *gateway.Builder, httpMethod string, middlewares ...api.Handler) {
	onePassThroughParams := &OnePassThroughParams{
		HttpMethod:                 httpMethod,
		SimpleOnePassThroughParams: params,
	}

	onePassThroughParams.passThrough(builder, middlewares...)
}

type OnePassThroughParams struct {
	HttpMethod string
	*SimpleOnePassThroughParams
}

func (params *OnePassThroughParams) passThrough(builder *gateway.Builder, middlewares ...api.Handler) {
	copyBuilder := builder.Url(params.HttpMethod, params.RelativePath)

	switch req := params.RequestItem.Request.(type) {
	case *gateway.PostRequest:
		copyBuilder = copyBuilder.Post(req, params.RequestItem.Callback)
	case *gateway.DeleteRequest:
		copyBuilder = copyBuilder.Delete(req, params.RequestItem.Callback)
	case *gateway.PutRequest:
		copyBuilder = copyBuilder.Put(req, params.RequestItem.Callback)
	case *gateway.GetRequest:
		copyBuilder = copyBuilder.Get(req, params.RequestItem.Callback)
	default:
		panic("不支持的请求类型")
	}

	copyBuilder.Build(middlewares...)
}

type SimpleCommonPassThroughParams struct {
	RelativePath string
	RequestItems []PassThroughRequestItem
}

func (params *SimpleCommonPassThroughParams) passThrough(builder *gateway.Builder, httpMethod string, middlewares ...api.Handler) {
	passThroughParams := &CommonPassThroughParams{
		HttpMethod:                    httpMethod,
		SimpleCommonPassThroughParams: params,
	}

	passThroughParams.passThrough(builder, middlewares...)
}

type CommonPassThroughParams struct {
	HttpMethod string
	*SimpleCommonPassThroughParams
}

func (params *CommonPassThroughParams) passThrough(builder *gateway.Builder, middlewares ...api.Handler) {
	copyBuilder := builder.Url(params.HttpMethod, params.RelativePath)

	for _, requestItem := range params.RequestItems {
		switch req := requestItem.Request.(type) {
		case *gateway.PostRequest:
			copyBuilder = copyBuilder.Post(req, requestItem.Callback)
		case *gateway.DeleteRequest:
			copyBuilder = copyBuilder.Delete(req, requestItem.Callback)
		case *gateway.PutRequest:
			copyBuilder = copyBuilder.Put(req, requestItem.Callback)
		case *gateway.GetRequest:
			copyBuilder = copyBuilder.Get(req, requestItem.Callback)
		default:
			panic("不支持的请求类型")
		}
	}

	copyBuilder.Build(middlewares...)
}