mirror of
https://github.com/silenceper/wechat.git
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70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
package redpacketcover
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import (
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"encoding/json"
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"fmt"
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"strings"
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"github.com/silenceper/wechat/v2/miniprogram/context"
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"github.com/silenceper/wechat/v2/util"
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)
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const (
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getRedPacketCoverUrl = "https://api.weixin.qq.com/redpacketcover/wxapp/cover_url/get_by_token?access_token=%s"
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)
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// RedPacketCover struct
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type RedPacketCover struct {
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*context.Context
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}
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// NewRedPacketCover 实例
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func NewRedPacketCover(context *context.Context) *RedPacketCover {
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redPacketCover := new(RedPacketCover)
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redPacketCover.Context = context
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return redPacketCover
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}
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// CoverParma 小程序码参数
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type CoverParma struct {
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// openid 可领取用户的openid
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OpenID string `json:"openid"`
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// ctoken 在红包封面平台获取发放ctoken（需要指定可以发放的appid）
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CToken string `json:"ctoken"`
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}
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// fetchCode 请求并返回二维码二进制数据
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func (qrCode *RedPacketCover) fetchCode(urlStr string, body interface{}) (response []byte, err error) {
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var accessToken string
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accessToken, err = qrCode.GetAccessToken()
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if err != nil {
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return
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}
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urlStr = fmt.Sprintf(urlStr, accessToken)
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var contentType string
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response, contentType, err = util.PostJSONWithRespContentType(urlStr, body)
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if err != nil {
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return
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}
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if strings.HasPrefix(contentType, "application/json") {
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// 返回错误信息
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var result util.CommonError
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err = json.Unmarshal(response, &result)
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if err == nil && result.ErrCode != 0 {
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err = fmt.Errorf("error : errcode=%v , errmsg=%v", result.ErrCode, result.ErrMsg)
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return nil, err
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}
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return response, nil
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}
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err = fmt.Errorf("error : unknown response content type - %v", contentType)
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return nil, err
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}
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// GetRedPacketCoverUrl 获得指定用户可以领取的红包封面链接。获取参数ctoken参考微信红包封面开放平台
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// 文档地址： https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/red-packet-cover/getRedPacketCoverUrl.html
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func (qrCode *RedPacketCover) GetRedPacketCoverUrl(coderParams CoverParma) (response []byte, err error) {
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return qrCode.fetchCode(getRedPacketCoverUrl, coderParams)
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}
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