// 腾讯云直播
package tencent

import (
	"crypto/hmac"
	"crypto/sha1"
	"encoding/base64"
	"fmt"
	"live/app/common"
	"live/app/lib/config"
	"log"
	"net/url"
	"strconv"
	"strings"
	"time"
)

type live struct {
	baseUrl    string
	pushKey    string
	pushDomain string
	pushExpire int64
	pushTreaty string
	playKey    string
	playDomain string
	playExpire int64
	playTreaty string
	playSuffix string
	secretId   string
	secretKey  string
	expireTime string
}

var Live *live

func init() {
	Live = &live{
		baseUrl:    config.Config.Section("tencent.live").Key("url").String(),
		pushKey:    config.Config.Section("tencent.live").Key("pushKey").String(),
		pushExpire: config.Config.Section("tencent.live").Key("pushExpire").MustInt64(0),
		pushDomain: config.Config.Section("tencent.live").Key("pushDomain").String(),
		pushTreaty: config.Config.Section("tencent.live").Key("pushTreaty").MustString("rtmp"),
		playKey:    config.Config.Section("tencent.live").Key("playKey").String(),
		playExpire: config.Config.Section("tencent.live").Key("playExpire").MustInt64(0),
		playDomain: config.Config.Section("tencent.live").Key("playDomain").String(),
		playTreaty: config.Config.Section("tencent.live").Key("playTreaty").MustString("rtmp"),
		playSuffix: config.Config.Section("tencent.live").Key("playSuffix").String(),
		secretId:   config.Config.Section("tencent.live").Key("secretId").String(),
		secretKey:  config.Config.Section("tencent.live").Key("secretKey").String(),
		expireTime: config.Config.Section("tencent.live").Key("expireTime").String(),
	}
}

// @Title 获取推流url
func (l *live) GetPushUrl(streamName string, liveItemId uint) string {
	streamName = fmt.Sprintf("%s_%v", streamName, liveItemId)
	query := ""
	if l.pushExpire > 0 {
		// 计算超时时间
		expTime := time.Now().Add(time.Duration(time.Second.Nanoseconds() * l.pushExpire)).Unix()

		// 时间戳转换为大写16进制
		txtTime := strings.ToUpper(strconv.FormatInt(expTime, 16))
		log.Println(l.pushKey + streamName + txtTime)
		txtSecret := common.Md5(l.pushKey + streamName + txtTime)
		query = "?" + url.Values{
			"txSecret":   []string{txtSecret},
			"txTime":     []string{txtTime},
			"liveItemId": []string{strconv.FormatUint(uint64(liveItemId), 10)},
		}.Encode()
	}
	return fmt.Sprintf("%v://%v/live/%v%v", l.pushTreaty, l.pushDomain, streamName, query)
}

// @Title 获取播放url
func (l *live) GetPlayUrl(streamName string, liveItemId uint) string {
	streamName = fmt.Sprintf("%s_%v", streamName, liveItemId)
	query := ""
	if l.playExpire > 0 {
		// 计算超时时间
		expTime := time.Now().Add(time.Duration(time.Second.Nanoseconds() * l.playExpire)).Unix()

		// 时间戳转换为大写16进制
		txtTime := strings.ToUpper(strconv.FormatInt(expTime, 16))
		log.Println(l.pushKey + streamName + txtTime)
		txtSecret := common.Md5(l.playKey + streamName + txtTime)
		query = "?" + url.Values{
			"txSecret": []string{txtSecret},
			"txTime":   []string{txtTime},
		}.Encode()
	}
	return fmt.Sprintf("%v://%v/live/%v%v%v", l.playTreaty, l.playDomain, streamName, l.playSuffix, query)
}

// @Title 获取签名
func (l *live) GetSign() string {
	signData := url.Values{
		"secretId":         []string{l.secretId},
		"currentTimeStamp": []string{strconv.FormatInt(time.Now().Unix(), 10)},
		"expireTime":       []string{l.expireTime},
		"random":           []string{strconv.FormatUint(uint64(Worker.Rander()), 10)},
		"oneTimeValid":     []string{"1"},
	}.Encode()
	h := hmac.New(sha1.New, []byte(l.secretKey))
	h.Write([]byte(signData))
	signTmp := h.Sum(nil)
	return base64.StdEncoding.EncodeToString(append(signTmp, []byte(signData)...))
}

// 断流推送数据 文档：https://cloud.tencent.com/document/product/267/20388
type Cutout struct {
	App         string `json:"app"`
	Appid       int64  `json:"appid"`
	Appname     string `json:"appname"`
	ChannelID   string `json:"channel_id"`
	Errcode     int64  `json:"errcode"`
	Errmsg      string `json:"errmsg"`
	EventTime   int64  `json:"event_time"`
	EventType   int64  `json:"event_type"` //1=推流 0=断流
	Node        string `json:"node"`
	Sequence    string `json:"sequence"`
	Sign        string `json:"sign"`
	StreamID    string `json:"stream_id"`
	StreamParam string `json:"stream_param"`
	T           int64  `json:"t"`
	UserIP      string `json:"user_ip"`
}

// 录制推送数据
type Transcribe struct {
	Appid       int64  `json:"appid"`
	ChannelID   string `json:"channel_id"`
	Duration    int64  `json:"duration"`
	EndTime     int64  `json:"end_time"`
	EventType   int64  `json:"event_type"` // 100=直播录制
	FileFormat  string `json:"file_format"`
	FileID      string `json:"file_id"`
	FileSize    int64  `json:"file_size"`
	Sign        string `json:"sign"`
	StartTime   int64  `json:"start_time"`
	StreamID    string `json:"stream_id"`
	StreamParam string `json:"stream_param"`
	T           int64  `json:"t"`
	VideoURL    string `json:"video_url"`
}

// 截图推送
type ScreenShot struct {
	ChannelID  string `json:"channel_id"`
	CreateTime int64  `json:"create_time"`
	EventType  int64  `json:"event_type"` // 200=截图推送
	FileSize   int64  `json:"file_size"`
	Height     int64  `json:"height"`
	PicFullURL string `json:"pic_full_url"`
	PicURL     string `json:"pic_url"`
	Sign       string `json:"sign"`
	StreamID   string `json:"stream_id"`
	T          int64  `json:"t"`
	Width      int64  `json:"width"`
}

// 鉴黄推送
type Yello struct {
	AbductionRisk  []interface{} `json:"abductionRisk"`
	App            string        `json:"app"`
	Appid          int64         `json:"appid"`
	Appname        string        `json:"appname"`
	ChannelID      string        `json:"channelId"`
	Confidence     int64         `json:"confidence"`
	EventType      int64         `json:"event_type"`
	FaceDetails    []interface{} `json:"faceDetails"`
	HotScore       int64         `json:"hotScore"`
	IllegalScore   int64         `json:"illegalScore"`
	Img            string        `json:"img"`
	Level          int64         `json:"level"`
	NormalScore    int64         `json:"normalScore"`
	OcrMsg         string        `json:"ocrMsg"`
	PolityScore    int64         `json:"polityScore"`
	PornScore      int64         `json:"pornScore"`
	ScreenshotTime int64         `json:"screenshotTime"`
	SendTime       int64         `json:"sendTime"`
	SimilarScore   int64         `json:"similarScore"`
	StreamID       string        `json:"streamId"`
	StreamParam    string        `json:"stream_param"`
	TerrorScore    int64         `json:"terrorScore"`
	Tid            int64         `json:"tid"`
	Type           []int64       `json:"type"`
}

// 上传视频回调 https://cloud.tencent.com/document/product/266/7830
type Upload struct {
	EventType       string `json:"EventType"`
	FileUploadEvent struct {
		FileID         string `json:"FileId"`
		MediaBasicInfo struct {
			ClassID     int64  `json:"ClassId"`
			ClassName   string `json:"ClassName"`
			ClassPath   string `json:"ClassPath"`
			CoverURL    string `json:"CoverUrl"`
			CreateTime  string `json:"CreateTime"`
			Description string `json:"Description"`
			ExpireTime  string `json:"ExpireTime"`
			MediaURL    string `json:"MediaUrl"`
			Name        string `json:"Name"`
			SourceInfo  struct {
				SourceContext string `json:"SourceContext"`
				SourceType    string `json:"SourceType"`
			} `json:"SourceInfo"`
			StorageRegion string        `json:"StorageRegion"`
			TagSet        []interface{} `json:"TagSet"`
			Type          string        `json:"Type"`
			UpdateTime    string        `json:"UpdateTime"`
			Vid           string        `json:"Vid"`
		} `json:"MediaBasicInfo"`
		ProcedureTaskID string `json:"ProcedureTaskId"`
	} `json:"FileUploadEvent"`
}