package douyin_openapi

import (
	"errors"
	douyinopenapi "gitea.youtukeji.com.cn/youtu/openapi-helper/douyin"
	"gitea.youtukeji.com.cn/youtu/openapi-helper/douyin/access-token"
	"github.com/silenceper/wechat/v2/cache"
	"sync"
)

type DouYinOpenApiClient struct {
	m *sync.Map
}

type DouYinApi struct {
	Api       *douyinopenapi.DouYinOpenApi // 抖音openapi客户端
	ecpmValue uint32                       // ECPM值
	viewCount uint32                       //浏览数
}

type GetEcpmParams struct {
	AppId       string `json:"app_id" form:"app_id"`
	OpenId      string `json:"open_id" form:"open_id"`
	AccessToken string `json:"access_token" form:"access_token"`
	DateHour    string `json:"date_hour" form:"date_hour"`
	PageSize    int    `json:"page_size" form:"page_size"`
	PageNo      int    `json:"page_no" form:"page_no"`
}

func NewDouYinOpenApiClient() *DouYinOpenApiClient {
	//DouYinOpenApi = douyinopenapi.NewDouYinOpenApi(douyinopenapi.DouYinOpenApiConfig{
	//	AppId:       "1259819191",
	//	AppSecret:   "0b7d7c0d0c8c0a0b0a0c0d0e0f0f0e0d0c0b0a090807060504030201000",
	//	IsSandbox:   true,
	//	AccessToken: nil,
	//	Cache:       nil,
	//})
	return &DouYinOpenApiClient{
		m: &sync.Map{},
	}
}

// GetDouYinOpenApi 获取抖音client
// appId: 小程序id
func (d *DouYinOpenApiClient) GetDouYinOpenApi(appId string) (api *DouYinApi, err error) {
	if v, ok := d.m.Load(appId); !ok {
		err = errors.New("未找到抖音client")
		return
	} else {
		api = v.(*DouYinApi)
		return
	}
}

// SetDouYinOpenApi 存储抖音client
// appId: 小程序id
func (d *DouYinOpenApiClient) SetDouYinOpenApi(appId string, api *DouYinApi) {
	d.m.Store(appId, api)
}

// NewAndStoreDouYinOpenApi 创建抖音client并存储
// appId: 小程序id
// appSecret: 小程序secret
// cache: 缓存
func (d *DouYinOpenApiClient) NewAndStoreDouYinOpenApi(appId, appSecret string, ecpmValue uint32, viewCount uint32, cache cache.Cache) {
	token := access_token.NewDefaultAccessToken(appId, appSecret, cache, false)
	api := douyinopenapi.NewDouYinOpenApi(douyinopenapi.DouYinOpenApiConfig{
		AppId:       appId,
		AppSecret:   appSecret,
		AccessToken: token,
		Cache:       cache,
		IsSandbox:   false,
	})
	d.SetDouYinOpenApi(appId, &DouYinApi{
		Api:       api,
		ecpmValue: ecpmValue,
		viewCount: viewCount,
	})
}

// GetEcpmValue 获取ECPM值
// appId: 小程序id,map的key
func (d *DouYinOpenApiClient) GetEcpmValue(appId string) uint32 {
	douyin, err := d.GetDouYinOpenApi(appId)
	if err != nil || douyin == nil {
		return 0
	}
	return douyin.ecpmValue
}

// GetEcpmViewCount 获取ECPM浏览数
// appId: 小程序id,map的key
func (d *DouYinOpenApiClient) GetEcpmViewCount(appId string) uint32 {
	douyin, err := d.GetDouYinOpenApi(appId)
	if err != nil || douyin == nil {
		return 0
	}
	return douyin.viewCount
}

// GetEcpmData 获取ECPM数据
// appId: 小程序id
// openId: 抖音openId
// dateHour: 日期
func (d *DouYinOpenApiClient) GetEcpmData(appId, openId, dateHour string) (list []douyinopenapi.Record, err error) {
	douyin, err := d.GetDouYinOpenApi(appId)
	if err != nil {
		return
	}

	//获取accessToken
	accessToken, err := douyin.Api.GetAccessToken()
	if err != nil {
		return
	}

	list, err = douyin.Api.GetEcpm(douyin.GetEcpmParams{
		AppId:       appId,
		OpenId:      openId,
		AccessToken: accessToken,
		DateHour:    dateHour,
		PageSize:    500,
		PageNo:      1,
	})
	return
}

// GetEcpm 计算ECPM
// https://bytedance.larkoffice.com/docx/Vg4yd0RDSovZINxJDyIc6THhnod
func (d *DouYinOpenApiClient) GetEcpm(res []douyinopenapi.Record) (ecpm float64, err error) {
	// 计算 ECPM
	totalCost := 0
	totalRecords := len(res)

	for _, record := range res {
		totalCost += record.Cost
	}

	// 如果没有记录，则返回错误
	if totalRecords == 0 {
		err = errors.New("未找到记录，无法计算 ECPM")
		return
	}
	// 总 cost / 100000 * 1000 / 总记录数
	ecpm = float64(totalCost) / 100000 * 1000 / float64(totalRecords)
	return
}