package mediaCenter

import (
	"github.com/fatih/structs"
	"reflect"
	"strings"
)

// MediaCenterService 媒资库相关服务调用
type MediaCenterService struct {
	url    string
	proId  string
	secret string
}

type Config struct {
	Url    string
	ProId  string
	Secret string
}

func NewMediaCenterService(c Config) *MediaCenterService {
	return &MediaCenterService{
		url:    c.Url,
		proId:  c.ProId,
		secret: c.Secret,
	}
}

func (m *MediaCenterService) getParams(p interface{}) (params map[string]interface{}) {
	req := structs.New(p)
	fields := req.Fields()
	params = make(map[string]interface{})
	for _, field := range fields {
		jsonTag := field.Tag("json")
		tagList := strings.Split(jsonTag, ",")
		key := field.Name()
		omitempty := ""
		if len(tagList) > 0 {
			key = tagList[0]
		}
		if len(tagList) > 1 {
			omitempty = tagList[1]
		}
		kind := reflect.TypeOf(field.Value()).Kind()
		// 如果是0值忽略或者空指针，不需要传
		if field.IsZero() && (kind == reflect.Ptr || omitempty == "omitempty") {
			continue
		}
		if kind == reflect.Ptr {
			// 通过指针取值
			params[key] = reflect.ValueOf(field.Value()).Elem().Interface()
		} else {
			params[key] = field.Value()
		}

	}
	params["pro_id"] = m.proId
	params["sign"] = m.sign()
	return
}

// TODO 暂时不需要加密
func (m *MediaCenterService) sign() string {
	return ""
}