package platform

import (
	"SciencesServer/utils"
	"errors"
	"strings"
	"time"
)

// 短信API

type Sms struct{}

type SmsParam struct {
	Mobile  []string `json:"mobile"`
	Content string   `json:"content"`
}

type SmsSendMode int

const (
	// SmsSendModeForAlone 常规单独发送
	SmsSendModeForAlone SmsSendMode = iota + 1
	// SmsSendModeForGroup 常规群发
	SmsSendModeForGroup
	// SmsSendModeForVariable 变量发送
	SmsSendModeForVariable
)

const (
	smsSendURLForAlone    string = "http://122.144.203.27:8001/mt.ashx"
	smsSendURLForGroup    string = "http://122.144.203.27:8001/mts.ashx"
	smsSendURLForVariable string = "http://122.144.203.27:8001/mts_var_json.ashx"
)

const (
	keyForAccount  string = "113934"
	keyForPassword string = "zytDuehC"
)

type SmsSend func(mode SmsSendMode, params *SmsParam) error

var smsSendModeHandle = map[SmsSendMode]func(params *SmsParam) (string, utils.Method, map[string]interface{}){
	SmsSendModeForAlone: alone,
	SmsSendModeForGroup: group,
}

func alone(params *SmsParam) (string, utils.Method, map[string]interface{}) {
	return smsSendURLForAlone, utils.MethodForGet, map[string]interface{}{
		"msg": params.Content, "pn": params.Mobile[0],
	}
}

func group(params *SmsParam) (string, utils.Method, map[string]interface{}) {
	return smsSendURLForGroup, utils.MethodForPost, map[string]interface{}{
		"msg": params.Content, "pn": strings.Join(params.Mobile, ","),
	}
}

func (this *Sms) Send() SmsSend {
	return func(mode SmsSendMode, params *SmsParam) error {
		now := time.Now().Format("20060102150405")

		_params := map[string]interface{}{
			"account": keyForAccount,
			"pswd":    strings.ToUpper(utils.Md5String(keyForAccount + keyForPassword + now)),
			"ts":      now,
		}
		handle, has := smsSendModeHandle[mode]

		if !has {
			return errors.New("未知的短信模式")
		}
		url, method, parameter := handle(params)

		if len(parameter) > 0 {
			for k, v := range parameter {
				_params[k] = v
			}
		}
		client := utils.NewClient(url, method, _params)

		_, err := client.Request(utils.RequestBodyFormatForFormData, utils.Headers{
			ContentType: utils.RequestContentTypeForXWWWFormUrlencoded,
		})
		return err
	}
}

func NewSms() *Sms {
	return &Sms{}
}