package utils

import (
	"fmt"
	"github.com/dgb8901/go-wechat-miniapp-sdk/config"
	"github.com/dgb8901/go-wechat-miniapp-sdk/models/response"
	"github.com/dgb8901/go-wechat-miniapp-sdk/service"
	"github.com/spf13/viper"
	"pet-house.com/core/g"
	"pet-house.com/core/server/viper_server"
)

var CONFIG = WxConfig{
	AppId:         "",
	Secret:        "",
	Token:         "",
	AesKey:        "",
	MsgDataFormat: "",
}

type WxConfig struct {
	AppId         string `mapstructure:"appId" json:"appId" yaml:"appId"`
	Secret        string `mapstructure:"secret" json:"secret" yaml:"secret"`
	Token         string `mapstructure:"token" json:"token" yaml:"token"`
	AesKey        string `mapstructure:"aesKey" json:"aesKey" yaml:"aesKey"`
	MsgDataFormat string `mapstructure:"msgDataFormat" json:"msgDataFormat" yaml:"msgDataFormat"`
}

// getViperConfig get viper config
func getViperConfig() viper_server.ViperConfig {
	configName := "wxconfig"
	return viper_server.ViperConfig{
		Debug:     true,
		Directory: g.ConfigDir,
		Name:      configName,
		Type:      g.ConfigType,
		Watch: func(vi *viper.Viper) error {
			if err := vi.Unmarshal(&CONFIG); err != nil {
				return fmt.Errorf("get Unarshal error: %v", err)
			}
			// watch config file change
			vi.SetConfigName(configName)
			return nil
		},
		Default: []byte(`
{
	"appId": ` + CONFIG.AppId + `,
	"secret": "` + CONFIG.Secret + `",
	"token": "` + CONFIG.Token + `",
	"aesKey": "` + CONFIG.AesKey + `",
	"msgDataFormat": ` + CONFIG.MsgDataFormat + `
}`),
	}
}

type WechatHelper struct {
	wechatService *service.WxaService
}

var wxHelper = &WechatHelper{}

func WechatInit() {
	viper_server.Init(getViperConfig())
	cfg := &config.Cfg{
		AppId:         CONFIG.AppId,
		Secret:        CONFIG.Secret,
		Token:         CONFIG.Token,
		AesKey:        CONFIG.AesKey,
		MsgDataFormat: CONFIG.MsgDataFormat,
	}
	wxaConfig := config.NewInMemory(cfg)
	wxaService := service.NewService(wxaConfig)
	wxHelper.wechatService = wxaService
}

func getWxaService() *service.WxaService {
	return wxHelper.wechatService
}

type WxUserInfo struct {
	OpenId  string
	UnionId string
}

func GetWxUserInfo(code string) (*response.JsCode2SessionResult, error) {
	info, err := getWxaService().GetUserService().Jscode2Session(code)
	if err != nil {
		return nil, err
	}
	return info, nil
}