package gateway

import (
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-tools/utils/http_client"
)

// Gateway 网关结构
type Gateway struct {
	api        *api.Api
	httpClient *http_client.Client

	options *Options
}

// NewGateway 创建网关
// 参数:
// - api: 网关使用的白泽API
// - opts: 选项
// 返回值:
// - 网关
func NewGateway(api *api.Api, opts ...Option) *Gateway {
	options := new(Options)

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

	if options.httpClientTimeoutSec == 0 {
		options.httpClientTimeoutSec = 30
	}

	return &Gateway{
		api:        api,
		httpClient: http_client.New(),
		options:    options,
	}
}

// DestroyGateway 销毁网关
// 参数:
// - gw: 网关
// 返回值: 无
func DestroyGateway(gw *Gateway) {
	if gw == nil {
		return
	}

	gw.api = nil
	gw = nil
}

// NewBuilder 创建网关API的Builder
// 参数:
// - routerType: 路由类型，有两种
//   - api.RouterRoot: 根路由
//   - api.RouterPrefix: 带url前缀的路由
//
// - version: 版本，用于获取基于上面两中路由够造的带有版本号的路由，传空字符串则选定上面两种路由本身
// - middlewares: 该Builder范围的中间件
// 返回值:
// - 网关API的Builder
func (gw *Gateway) NewBuilder(routerType string, version string, middlewares ...Handler) *Builder {
	return newBuilder(gw.api.ChooseRouter(routerType, version), gw.httpClient, gw.options.httpClientTimeoutSec, middlewares...)
}

type Option func(options *Options)

type Options struct {
	httpClientTimeoutSec int64
}

// WithHttpClientTimeoutSec 设置http客户端的超时时间
func WithHttpClientTimeoutSec(httpClientTimeoutSec int64) Option {
	return func(options *Options) {
		options.httpClientTimeoutSec = httpClientTimeoutSec
	}
}