package message

import (
	"dashoo.cn/opms_libary/plugin/wechat/base"
	"dashoo.cn/opms_libary/plugin/wechat/context"
	"encoding/json"
)

const (
	customerSendMessage = "https://api.weixin.qq.com/cgi-bin/message/custom/send"
)

// MiniMessage 消息管理者，可以发送消息
type MiniMessage struct {
	base.WechatBase
}

// NewMiniMessage 实例化消息管理者
func NewMiniMessage(context *context.Context) *MiniMessage {
	msg := new(MiniMessage)
	msg.Context = context
	return msg
}

// MediaText 文本消息的文字
type MediaText struct {
	Content string `json:"content"`
}

// MediaResource  消息使用的临时素材id
type MediaResource struct {
	MediaID string `json:"media_id"`
}

// MediaMiniprogrampage 小程序卡片
type MediaMiniprogrampage struct {
	Title        string `json:"title"`
	Appid        string `json:"appid"`
	Pagepath     string `json:"pagepath"`
	ThumbMediaID string `json:"thumb_media_id"`
}

// MediaLink 发送图文链接
type MediaLink struct {
	Title       string `json:"title"`
	Description string `json:"description"`
	URL         string `json:"url"`
	ThumbURL    string `json:"thumb_url"`
}

// CustomerMessage  客服消息
type CustomerMessage struct {
	ToUser          string                `json:"touser"`                    // 接受者OpenID
	Msgtype         MsgType               `json:"msgtype"`                   // 客服消息类型
	Text            *MediaText            `json:"text,omitempty"`            // 可选
	Image           *MediaResource        `json:"image,omitempty"`           // 可选
	Link            *MediaLink            `json:"link,omitempty"`            // 可选
	Miniprogrampage *MediaMiniprogrampage `json:"miniprogrampage,omitempty"` // 可选
}

// NewTextMessage 文本消息结构体构造方法
func NewTextMessage(toUser, text string) *CustomerMessage {
	return &CustomerMessage{
		ToUser:  toUser,
		Msgtype: MsgTypeText,
		Text: &MediaText{
			Content: text,
		},
	}
}

// NewImgMessage 图片消息的构造方法
func NewImgMessage(toUser, mediaID string) *CustomerMessage {
	return &CustomerMessage{
		ToUser:  toUser,
		Msgtype: MsgTypeImage,
		Image: &MediaResource{
			MediaID: mediaID,
		},
	}
}

// NewLinkMessage 图文链接消息的构造方法
func NewLinkMessage(toUser, title, description, url, thumbURL string) *CustomerMessage {
	return &CustomerMessage{
		ToUser:  toUser,
		Msgtype: MsgTypeLink,
		Link: &MediaLink{
			Title:       title,
			Description: description,
			URL:         url,
			ThumbURL:    thumbURL,
		},
	}
}

// NewMiniprogrampageMessage 小程序卡片消息的构造方法
func NewMiniprogrampageMessage(toUser, title, pagepath, thumbMediaID string) *CustomerMessage {
	return &CustomerMessage{
		ToUser:  toUser,
		Msgtype: MsgTypeMiniProgramPage,
		Miniprogrampage: &MediaMiniprogrampage{
			Title:        title,
			Pagepath:     pagepath,
			ThumbMediaID: thumbMediaID,
		},
	}
}

// Send 发送客服消息
func (m *MiniMessage) Send(msg *CustomerMessage) (err error) {
	response, err := m.HTTPPostJSONWithAccessToken(customerSendMessage, msg)
	if err != nil {
		return err
	}
	var result context.WxError
	err = json.Unmarshal(response, &result)
	if err != nil {
		return
	}
	if result.Code != 0 {
		return &result
	}
	return nil
}