package controllers

import (
	"bytes"
	"encoding/binary"
	"encoding/json"
	"eta/eta_mini_crm_ht/models"
	"eta/eta_mini_crm_ht/models/request"
	"eta/eta_mini_crm_ht/models/response"
	"eta/eta_mini_crm_ht/services"
	"eta/eta_mini_crm_ht/services/elastic"
	"eta/eta_mini_crm_ht/utils"
	"fmt"
	"github.com/rdlucklib/rdluck_tools/paging"
	"io"
	"os"
	"path"
	"strconv"
	"strings"
	"time"
)

var (
	videoType = map[string]int{
		".mp4": 1,
	}
)

type VideoController struct {
	BaseAuthController
}

// UploadVideo @Title 上传视频
// @Description 上传视频
// @Param   File   query   file  true       "文件"
// @Success 200 {object} models.ReportAuthorResp
// @router /uploadVideo [post]
func (this *VideoController) UploadVideo() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()
	f, h, err := this.GetFile("File")
	if err != nil {
		br.Msg = "获取资源信息失败"
		br.ErrMsg = "获取资源信息失败，Err:" + err.Error()
		return
	}
	defer f.Close()
	size, err := strconv.Atoi(utils.UPLOAD_VIDEO_SIZE)
	if err != nil {
		size = 1024
	}
	if h.Size > 1024*1024*int64(size) {
		br.Msg = fmt.Sprintf("视频大小不能超过%dM", size)
		br.ErrMsg = "视频上传失败，Err:" + err.Error()
		return
	}
	ext := path.Ext(h.Filename)
	lowCaseExt := strings.ToLower(ext)
	if _, ok := videoType[lowCaseExt]; !ok {
		br.Msg = "视频格式不正确"
		br.ErrMsg = "视频上传失败，Err:" + err.Error()
		return
	}

	dateDir := time.Now().Format("20060102")
	uploadDir := utils.STATIC_DIR + "ht/audio" + dateDir
	err = os.MkdirAll(uploadDir, utils.DIR_MOD)
	if err != nil {
		br.Msg = "存储目录创建失败"
		br.ErrMsg = "存储目录创建失败,Err:" + err.Error()
		return
	}
	randStr := utils.GetRandStringNoSpecialChar(28)
	fileName := randStr + ext
	fpath := uploadDir + "/" + fileName
	err = this.SaveToFile("File", fpath)
	if err != nil {
		br.Msg = "视频上传失败"
		br.ErrMsg = "视频上传失败，Err:" + err.Error()
		return
	}
	duration, err := GetMP4Duration(f)
	if err != nil {
		br.Msg = "视频上传失败"
		br.ErrMsg = "获取视频时长失败，Err:" + err.Error()
		return
	}

	audioUploadDir := utils.RESOURCE_DIR + "video/"
	savePdfToOssPath := audioUploadDir + time.Now().Format("200601/20060102/")
	audioName := utils.GetRandStringNoSpecialChar(28)
	savePdfToOssPath += audioName + ext

	defer func() {
		err = os.Remove(fpath)
		fmt.Sprintf("删除文件失败:%v", err)
	}()
	ossClient := services.NewOssClient()
	if ossClient == nil {
		br.Msg = "视频上传失败"
		br.ErrMsg = "初始化OSS服务失败"
		return
	}
	mp3Url, err := ossClient.UploadFile("", fpath, savePdfToOssPath)
	if err != nil {
		br.Msg = "视频上传失败"
		br.ErrMsg = "视频上传失败，Err:" + err.Error()
		return
	}
	base := path.Base(h.Filename)
	resp := new(response.MediaUploadResp)
	resp.Url = mp3Url
	resp.FileName = base
	resp.DurationMillisecond = duration * 1000
	br.Data = resp
	br.Msg = "上传成功"
	br.Ret = 200
	br.Success = true
}

// AddVideo @Title 新增音频
// @Description 新增音频
// @Param   File   query   file  true       "文件"
// @Success 200 {object} models.ReportAuthorResp
// @router /addVideo [post]
func (this *VideoController) AddVideo() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()

	var req request.VideoReq
	if err := json.Unmarshal(this.Ctx.Input.RequestBody, &req); err != nil {
		br.Msg = "参数解析失败"
		br.ErrMsg = "参数解析失败，Err:" + err.Error()
		return
	}

	if req.VideoName == "" {
		br.Msg = "视频名称为空"
		return
	}
	if req.AnalystId == 0 {
		br.Msg = "研究员ID为空"
		return
	}
	if req.AnalystName == "" {
		br.Msg = "研究员名称为空"
		return
	}
	if req.SrcUrl == "" {
		br.Msg = "视频地址为空"
		return
	}

	if req.DurationMillisecond == 0 {
		br.Msg = "视频时长为空"
		return
	}
	if req.CoverSrc == "" {
		br.Msg = "封面为空"
		return
	}
	var err error
	audioInsert := &models.Media{
		AuthorId:              req.AnalystId,
		AuthorName:            req.AnalystName,
		MediaType:             models.Video,
		Src:                   req.SrcUrl,
		CoverSrc:              req.CoverSrc,
		MediaName:             req.VideoName,
		SourceType:            "mp4",
		MediaPlayMilliseconds: req.DurationMillisecond,
		PermissionIds:         req.PermissionIds,
		PublishedTime:         time.Now(),
		SendStatus:            models.UNSEND,
		Deleted:               0,
		CreatedTime:           time.Now(),
	}

	err = models.InsertMedia(audioInsert)
	if err != nil {
		br.Msg = "添加失败"
		br.ErrMsg = "音频新增失败，Err:" + err.Error()
		return
	}
	// 添加es
	go func(audio *models.ESMedia) {
		docId := strconv.Itoa(audio.MediaId)
		err = elastic.EsAddOrEditMedia(utils.MEDIA_INDEX, docId, audio)
		if err != nil {
			utils.FileLog.Info("音频记录es新增失败，Err:" + err.Error())
			return
		}
		utils.FileLog.Info("音频记录es新增成功, pdfId:" + docId)
	}(audioInsert.ToView())
	// 创建消息
	_, _ = services.CreateMeta(audioInsert.AuthorName, audioInsert.AuthorId, audioInsert.Id, audioInsert.PublishedTime.Format(time.DateTime), models.VideoSourceType)
	br.Msg = "添加成功"
	br.Ret = 200
	br.Success = true
}

// EditVideo @Title 编辑音频
//
// @Description 编辑音频
// @Success 200 {object} models.ReportAuthorResp
// @router /editVideo [post]
func (this *VideoController) EditVideo() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()

	var req request.VideoReq
	if err := json.Unmarshal(this.Ctx.Input.RequestBody, &req); err != nil {
		br.Msg = "参数解析失败"
		br.ErrMsg = "参数解析失败，Err:" + err.Error()
		return
	}
	if req.VideoId <= 0 {
		br.Msg = "视频ID为空"
		return
	}
	if req.VideoName == "" {
		br.Msg = "视频名称为空"
		return
	}
	if req.AnalystId == 0 {
		br.Msg = "研究员ID为空"
		return
	}
	if req.AnalystName == "" {
		br.Msg = "研究员名称为空"
		return
	}
	if req.SrcUrl == "" {
		br.Msg = "视频地址为空"
		return
	}
	if req.DurationMillisecond == 0 {
		br.Msg = "视频时长为空"
		return
	}
	if req.CoverSrc == "" {
		br.Msg = "封面为空"
		return
	}
	var err error

	audioEdit := &models.Media{
		Id:                    req.VideoId,
		AuthorId:              req.AnalystId,
		AuthorName:            req.AnalystName,
		MediaType:             models.Video,
		CoverSrc:              req.CoverSrc,
		Src:                   req.SrcUrl,
		SourceType:            "mp4",
		MediaName:             req.VideoName,
		MediaPlayMilliseconds: req.DurationMillisecond,
		PermissionIds:         req.PermissionIds,
	}
	//coverSrc
	_, err = models.UpdateMedia(audioEdit)
	if err != nil {
		br.Msg = "更新失败"
		br.ErrMsg = "视频更新失败，Err:" + err.Error()
		return
	}
	go func(audio *models.ESMedia) {
		docId := strconv.Itoa(audio.MediaId)
		err = elastic.EsAddOrEditMedia(utils.MEDIA_INDEX, docId, audio)
		if err != nil {
			utils.FileLog.Info("视频记录es更新失败，Err:" + err.Error())
			return
		}
		utils.FileLog.Info("视频记录es更新成功, pdfId:" + docId)
	}(audioEdit.ToView())
	br.Msg = "编辑成功"
	br.Ret = 200
	br.Success = true
}

// DeleteVideo
// @Title 删除音频
//
// @Description 删除音频
// @Success 200 {object} models.ReportAuthorResp
// @router /deleteVideo [post]
func (this *VideoController) DeleteVideo() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()

	var req request.VideoReq
	if err := json.Unmarshal(this.Ctx.Input.RequestBody, &req); err != nil {
		br.Msg = "参数解析失败"
		br.ErrMsg = "参数解析失败，Err:" + err.Error()
		return
	}
	if req.VideoId <= 0 {
		br.Msg = "视频ID为空"
		return
	}
	var err error

	audioDelete := &models.Media{
		Id:      req.VideoId,
		Deleted: 1,
	}

	err = models.DeleteMedia(audioDelete)
	if err != nil {
		br.Msg = "删除失败"
		br.ErrMsg = "视频删除失败，Err:" + err.Error()
		return
	}
	// 添加es
	go func(audio *models.ESMedia) {
		docId := strconv.Itoa(audio.MediaId)
		err = elastic.EsDeleteData(utils.MEDIA_INDEX, docId)
		if err != nil {
			utils.FileLog.Info("视频记录es删除失败，Err:" + err.Error())
			return
		}
		utils.FileLog.Info("视频记录es删除成功, pdfId:" + docId)
	}(audioDelete.ToView())
	br.Msg = "删除成功"
	br.Ret = 200
	br.Success = true
}

// VideoList
// @Title 研报列表
// @Description pdf研报列表
// @Param   PageSize   query   int  true       "每页数据条数"
// @Param   CurrentIndex   query   int  true       "当前页页码，从1开始"
// @Param   ClassifyIds   query   string  true       "二级分类id,可多选用英文,隔开"
// @Param   KeyWord   query   string  true       "报告标题/创建人"
// @Param   SortType   query   string  true       "排序方式"
// @Success 200 {object} models.ReportAuthorResp
// @router /videoList [get]
func (this *VideoController) VideoList() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()
	pageSize, _ := this.GetInt("PageSize")
	currentIndex, _ := this.GetInt("CurrentIndex")
	sortType := this.GetString("SortType")
	KeyWord := this.GetString("KeyWord")
	var condition string
	var pars []interface{}

	if pageSize <= 0 {
		pageSize = utils.PageSize20
	}
	if currentIndex <= 0 {
		currentIndex = 1
	}
	if KeyWord != "" {
		condition += " AND media_name like '%" + KeyWord + "%'"
	}
	sortCondition := " ORDER BY published_time "
	if sortType == "" {
		sortType = "DESC"
	}
	sortCondition = sortCondition + sortType
	total, err := models.GetMediaCountByCondition(models.Video, condition, pars)
	if err != nil {
		br.Msg = "获取视频列表失败"
		br.ErrMsg = "获取视频列表统计失败，Err:" + err.Error()
		return
	}

	startSize := utils.StartIndex(currentIndex, pageSize)
	List, err := models.GetMediaByCondition(models.Video, condition, sortCondition, pars, startSize, pageSize)
	if err != nil {
		br.Msg = "获取视频列表失败"
		br.ErrMsg = "获取视频列表失败，Err:" + err.Error()
		return
	}
	var reportViewList []*models.MediaView
	for _, report := range List {
		reportView := report.ToMediaView()
		reportViewList = append(reportViewList, reportView)
	}
	page := paging.GetPaging(currentIndex, pageSize, total)
	resp := new(response.MediaListResp)
	resp.List = reportViewList
	resp.Paging = page

	br.Ret = 200
	br.Success = true
	br.Data = resp
	br.Msg = "获取成功"
}

type BoxHeader struct {
	Size       uint32
	FourccType [4]byte
	Size64     uint64
}

// GetMP4Duration 获取视频时长，以秒计
func GetMP4Duration(reader io.ReaderAt) (lengthOfTime int, err error) {
	var info = make([]byte, 0x10)
	var boxHeader BoxHeader
	var offset int64 = 0
	// 获取moov结构偏移
	for {
		_, err = reader.ReadAt(info, offset)
		if err == io.EOF {
			fmt.Println("Reached EOF without finding moov box.")
			return 0, fmt.Errorf("moov box not found")
		}
		if err != nil {
			return 0, fmt.Errorf("error reading at offset %d: %w", offset, err)
		}

		boxHeader = getHeaderBoxInfo(info)
		fourccType := getFourccType(boxHeader)

		if fourccType == "moov" {
			fmt.Println("Found moov box at offset", offset)
			break
		}

		nextOffset := int64(boxHeader.Size)
		if fourccType == "mdat" && boxHeader.Size == 1 {
			nextOffset = int64(boxHeader.Size64)
		}
		if nextOffset == 0 {
			return 0, fmt.Errorf("box size is zero, which is invalid and likely means a parsing error")
		}
		offset += nextOffset
	}

	// 获取moov结构开头一部分
	moovStartBytes := make([]byte, 0x100)
	_, err = reader.ReadAt(moovStartBytes, offset)
	if err != nil {
		return 0, fmt.Errorf("error reading moov box at offset %d: %w", offset, err)
	}
	// 定义timeScale与Duration偏移
	timeScaleOffset := 0x1C
	durationOffset := 0x20
	timeScale := binary.BigEndian.Uint32(moovStartBytes[timeScaleOffset : timeScaleOffset+4])
	duration := binary.BigEndian.Uint32(moovStartBytes[durationOffset : durationOffset+4])

	fmt.Printf("timeScale: %d, duration: %d\n", timeScale, duration)
	if timeScale == 0 {
		return 0, fmt.Errorf("timeScale is zero, division by zero is not possible")
	}

	lengthOfTime = int(duration / timeScale)
	return
}

// getHeaderBoxInfo 获取头信息
func getHeaderBoxInfo(data []byte) (boxHeader BoxHeader) {
	buf := bytes.NewBuffer(data)
	binary.Read(buf, binary.BigEndian, &boxHeader)
	if boxHeader.Size == 1 { // Large Size
		binary.Read(buf, binary.BigEndian, &boxHeader.Size64)
	}
	return
}

// UploadFile @Title 上传图片
// @Description 上传视频
// @Param   File   query   file  true       "文件"
// @Success 200 {object} models.ReportAuthorResp
// @router /uploadFile [post]
func (this *VideoController) UploadFile() {
	br := new(models.BaseResponse).Init()
	defer func() {
		this.Data["json"] = br
		this.ServeJSON()
	}()
	f, h, err := this.GetFile("File")
	if err != nil {
		br.Msg = "获取资源信息失败"
		br.ErrMsg = "获取资源信息失败，Err:" + err.Error()
		return
	}
	defer f.Close()
	size, err := strconv.Atoi(utils.UPLOAD_IMG_SIZE)
	if err != nil {
		size = 100
	}
	if h.Size > 1024*1024*int64(size) {
		br.Msg = fmt.Sprintf("图片大小不能超过%dK", size)
		br.ErrMsg = "图片上传失败，Err:" + err.Error()
		return
	}
	ext := path.Ext(h.Filename)

	dateDir := time.Now().Format("20060102")
	uploadDir := utils.STATIC_DIR + "ht/audio" + dateDir
	err = os.MkdirAll(uploadDir, utils.DIR_MOD)
	if err != nil {
		br.Msg = "存储目录创建失败"
		br.ErrMsg = "存储目录创建失败,Err:" + err.Error()
		return
	}
	randStr := utils.GetRandStringNoSpecialChar(28)
	fileName := randStr + ext
	fpath := uploadDir + "/" + fileName
	err = this.SaveToFile("File", fpath)
	if err != nil {
		br.Msg = "图片上传失败"
		br.ErrMsg = "图片上传失败，Err:" + err.Error()
		return
	}
	audioUploadDir := utils.RESOURCE_DIR + "img/"
	savePdfToOssPath := audioUploadDir + time.Now().Format("200601/20060102/")
	audioName := utils.GetRandStringNoSpecialChar(28)
	savePdfToOssPath += audioName + ext

	defer func() {
		err = os.Remove(fpath)
		fmt.Sprintf("删除文件失败:%v", err)
	}()
	ossClient := services.NewOssClient()
	if ossClient == nil {
		br.Msg = "图片上传失败"
		br.ErrMsg = "初始化OSS服务失败"
		return
	}
	mp3Url, err := ossClient.UploadFile("", fpath, savePdfToOssPath)
	if err != nil {
		br.Msg = "图片上传失败"
		br.ErrMsg = "图片上传失败，Err:" + err.Error()
		return
	}
	base := path.Base(h.Filename)
	resp := new(response.MediaUploadResp)
	resp.Url = mp3Url
	resp.FileName = base
	br.Data = resp
	br.Msg = "上传成功"
	br.Ret = 200
	br.Success = true
}

type Chunk struct {
	Filename    string
	UniqueCode  string
	ChunkNumber int
	TotalChunks int
	Data        []byte
}

var chunksMap = make(map[string][]Chunk)

// getFourccType 获取信息头类型
func getFourccType(boxHeader BoxHeader) (fourccType string) {
	return string(boxHeader.FourccType[:])
}