package cli

import (
	"context"
	"errors"
	"sync"
)

const (
	DouyinClientType = "douyin"
	WechatClientType = "wechat"
)

var (
	ErrClientNotFound = errors.New("client not found")
)

type Helper struct {
	sync.Map
}

// Get 获取小程序客户端
func (h *Helper) Get(appId string) (cli DWClient, err error) {
	if v, ok := h.Load(appId); ok {
		cli = v.(DWClient)
		return
	}
	return nil, ErrClientNotFound
}

// Set 设置小程序客户端
func (h *Helper) Set(appId string, cli DWClient) {
	h.Store(appId, cli)
}

type DWClient interface {
	// GetAccessToken 获取access_token
	GetAccessToken(ctx context.Context) (string, error)
	// Code2Session 登录凭证校验
	Code2Session(ctx context.Context, code, anonymousCode string) (*Code2SessionResponse, error)
}

type Code2SessionResponse struct {
	OpenID  string `json:"openId"`  // 用户唯一标识
	UnionID string `json:"unionId"` // 用户在开放平台的唯一标识符，在满足UnionID下发条件的情况下会返回
}