package kf

import (
	"encoding/json"
	"fmt"

	"github.com/silenceper/wechat/v2/util"
)

const (
	customerBatchGetAddr = "https://qyapi.weixin.qq.com/cgi-bin/kf/customer/batchget?access_token=%s"
)

// CustomerBatchGetOptions 客户基本信息获取请求参数
type CustomerBatchGetOptions struct {
	ExternalUserIDList []string `json:"external_userid_list"` // external_userid列表
}

// CustomerSchema 微信客户基本资料
type CustomerSchema struct {
	ExternalUserID string `json:"external_userid"` // 微信客户的external_userid
	NickName       string `json:"nickname"`        // 微信昵称
	Avatar         string `json:"avatar"`          // 微信头像。第三方不可获取
	Gender         int    `json:"gender"`          // 性别
	UnionID        string `json:"unionid"`         // unionid，需要绑定微信开发者帐号才能获取到，查看绑定方法: https://open.work.weixin.qq.com/kf/doc/92512/93143/94769#%E5%A6%82%E4%BD%95%E8%8E%B7%E5%8F%96%E5%BE%AE%E4%BF%A1%E5%AE%A2%E6%88%B7%E7%9A%84unionid
}

// CustomerBatchGetSchema 获取客户基本信息响应内容
type CustomerBatchGetSchema struct {
	util.CommonError
	CustomerList          []CustomerSchema `json:"customer_list"`           // 微信客户信息列表
	InvalidExternalUserID []string         `json:"invalid_external_userid"` // 无效的微信客户ID
}

// CustomerBatchGet 客户基本信息获取
func (r *Client) CustomerBatchGet(options CustomerBatchGetOptions) (info CustomerBatchGetSchema, err error) {
	var (
		accessToken string
		data        []byte
	)
	if accessToken, err = r.ctx.GetAccessToken(); err != nil {
		return
	}
	if data, err = util.PostJSON(fmt.Sprintf(customerBatchGetAddr, accessToken), options); err != nil {
		return
	}
	if err = json.Unmarshal(data, &info); err != nil {
		return
	}
	if info.ErrCode != 0 {
		return info, NewSDKErr(info.ErrCode, info.ErrMsg)
	}
	return info, nil
}