package controllers

import (
	"errors"
	"fmt"
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
	"io"
	"mime/multipart"
	"net/url"
	"os"
	"path"
	"path/filepath"
	"speechAnalysis/constvar"
	"speechAnalysis/extend/code"
	"speechAnalysis/extend/util"
	"speechAnalysis/models"
	"speechAnalysis/pkg/logx"
	"speechAnalysis/request"
	"speechAnalysis/response"
	"speechAnalysis/service"
	"speechAnalysis/utils/upload"
	"strings"
	"time"
)

type AudioCtl struct{}

// Upload
// @Tags      音频
// @Summary   上传音频
// @Accept     multipart/form-data
// @Produce   application/json
// @Param file formData []file false "多文件上传"
// @Success   200 {object} util.Response "成功"
// @Router    /api-sa/v1/audio/upload [post]
func (slf AudioCtl) Upload(c *gin.Context) {
	var headers []*multipart.FileHeader
	files, _ := c.MultipartForm()
	if len(files.File["file"]) > 1 {
		headers = files.File["file"]
	} else {
		util.ResponseFormat(c, code.RequestParamError, "文件需要一一对应")
		return
	}
	audio := &models.Audio{}
	for _, header := range headers {
		filename := path.Base(header.Filename)
		arr := strings.Split(filename, "_")
		if len(arr) != 6 {
			util.ResponseFormat(c, code.RequestParamError, "文件名称错误")
			return
		}
		_, err := models.NewAudioSearch().SetName(filename).First()
		if err != gorm.ErrRecordNotFound {
			util.ResponseFormat(c, code.RequestParamError, "重复上传")
			return
		}
		oss := upload.NewOss()
		filePath, filename, uploadErr := oss.UploadFile(header)
		if uploadErr != nil {
			logx.Errorf("upload audio err: %v", err)
			util.ResponseFormat(c, code.RequestParamError, "上传失败")
			return
		}
		if filepath.Ext(filename) == ".mp3" || filepath.Ext(filename) == ".wav" {
			timeStr := arr[4] + strings.Split(arr[5], ".")[0]
			t, err := time.ParseInLocation("20060102150405", timeStr, time.Local)
			if err != nil {
				util.ResponseFormat(c, code.RequestParamError, "时间格式不对")
				return
			}
			audio.Name = filename
			audio.Size = header.Size
			audio.FilePath = filePath
			audio.AudioStatus = constvar.AudioStatusUploadOk
			audio.LocomotiveNumber = arr[0]
			audio.TrainNumber = arr[1]
			audio.DriverNumber = arr[2]
			audio.Station = arr[3]
			audio.OccurrenceAt = t
			audio.IsFollowed = 0
		}
		if filepath.Ext(filename) == ".txt" {
			audio.TxtFilePath = filePath
			//读取filepath文件内容到bts
			bts, err := os.ReadFile(filePath)
			if err != nil {
				util.ResponseFormat(c, code.RequestParamError, "读取文件失败")
				return
			}
			//解析 交路号:123_公里标:321
			fileds := string(bts)
			arr = strings.Split(fileds, "_")
			if len(arr) != 2 {
				util.ResponseFormat(c, code.RequestParamError, "文件内容格式不对")
				return
			} else {
				RouteNumber := strings.Split(arr[0], ":")
				KilometerMarker := strings.Split(arr[1], ":")
				if len(RouteNumber) > 1 && len(KilometerMarker) > 1 {
					audio.RouteNumber = RouteNumber[1]
					audio.KilometerMarker = KilometerMarker[1]
				} else {
					util.ResponseFormat(c, code.RequestParamError, "文件内容格式不对")
					return
				}
			}
		}
	}
	if err := models.NewAudioSearch().Create(audio); err != nil {
		util.ResponseFormat(c, code.SaveFail, "上传失败")
		return
	}
	go func() {
		var trainInfoNames = []string{audio.LocomotiveNumber, audio.TrainNumber, audio.Station}
		var (
			info   *models.TrainInfo
			err    error
			parent models.TrainInfo
		)
		for i := 0; i < 3; i++ {
			name := trainInfoNames[i]
			class := constvar.Class(i + 1)
			info, err = models.NewTrainInfoSearch().SetName(name).SetClass(class).First()
			if err == gorm.ErrRecordNotFound {
				info = &models.TrainInfo{
					Name:     name,
					Class:    class,
					ParentID: parent.ID,
				}
				_ = models.NewTrainInfoSearch().Create(info)
			}
			parent = *info
		}
	}()
}

func (slf AudioCtl) ParamsCheck(filename string) (err error) {
	arr := strings.Split(filename, "_")
	if len(arr) != 6 {
		return errors.New("文件格式错误")
	}
	return nil
}

// TrainInfoList
// @Tags      音频
// @Summary   获取火车信息
// @Produce   application/json
// @Param     object  query    request.GetTrainInfoList true  "参数"
// @Success   200   {object}  util.ResponseList{data=[]models.TrainInfo}  "成功"
// @Router    /api-sa/v1/audio/trainInfoList [get]
func (slf AudioCtl) TrainInfoList(c *gin.Context) {
	var params request.GetTrainInfoList
	if err := c.ShouldBindQuery(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	if !params.PageInfo.Check() {
		util.ResponseFormat(c, code.RequestParamError, "分页参数错误")
		return
	}

	list, total, err := models.NewTrainInfoSearch().
		SetPage(params.Page, params.PageSize).
		SetClass(params.Class).
		SetParentId(params.ParentID).
		Find()

	if err != nil {
		util.ResponseFormat(c, code.RequestParamError, "查找失败")
		return
	}

	util.ResponseFormatList(c, code.Success, list, total)
}

// List
// @Tags      音频
// @Summary   音频分析检索
// @Produce   application/json
// @Param     object  query    request.GetAudioList true  "参数"
// @Success   200   {object}  util.ResponseList{data=[]models.Audio}  "成功"
// @Router    /api-sa/v1/audio/list [get]
func (slf AudioCtl) List(c *gin.Context) {
	var params request.GetAudioList
	if err := c.ShouldBindQuery(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	if !params.PageInfo.Check() {
		util.ResponseFormat(c, code.RequestParamError, "分页参数错误")
		return
	}

	list, total, err := models.NewAudioSearch().
		SetPage(params.Page, params.PageSize).
		SetKeyword(params.Keyword).
		SetLocomotiveNumber(params.LocomotiveNumber).
		SetTrainNumber(params.TrainNumber).
		SetDriverNumber(params.DriverNumber).
		SetStation(params.StationNumber).
		SetBeginTime(params.BeginTime).
		SetEndTime(params.EndTime).
		SetIsFollowed(params.IsFollowed).
		SetAudioStatusList(params.StatusList).
		SetOrder("created_at desc").
		Find()

	if err != nil {
		util.ResponseFormat(c, code.RequestParamError, "查找失败")
		return
	}

	util.ResponseFormatList(c, code.Success, list, total)
}

// Process
// @Tags      音频
// @Summary   处理音频
// @Produce   application/json
// @Param     object  body request.ProcessAudio true  "参数"
// @Success   200 {object} util.Response "成功"
// @Router    /api-sa/v1/audio/process [post]
func (slf AudioCtl) Process(c *gin.Context) {
	var params request.ProcessAudio
	if err := c.ShouldBind(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	err := service.Process(params.ID)
	if err != nil {
		util.ResponseFormat(c, code.InternalError, err.Error())
		return
	}

	util.ResponseFormat(c, code.UpdateSuccess, "成功")
}

// AudioInfo
// @Tags      音频
// @Summary   音频详情，含解析结果
// @Produce   application/json
// @Param     object  query request.ProcessAudio true  "参数"
// @Success   200 {object} util.Response{data=models.Audio} "成功"
// @Router    /api-sa/v1/audio/info [get]
func (slf AudioCtl) AudioInfo(c *gin.Context) {
	var params request.ProcessAudio
	if err := c.ShouldBindQuery(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	audio, err := models.NewAudioSearch().SetID(params.ID).First()
	if err != nil {
		util.ResponseFormat(c, code.InternalError, "请求失败")
		return
	}
	audioText, err := models.NewAudioTextSearch().SetAudioID(audio.ID).First()
	if err == nil {
		audio.AudioText = audioText.AudioText
	}

	util.ResponseFormat(c, code.UpdateSuccess, audio)
}

// AudioDownload
// @Tags      音频
// @Summary   音频下载
// @Produce   application/json
// @Param     object  query request.ProcessAudio true  "参数"
// @Success   200 {object} util.Response{data=models.Audio} "成功"
// @Router    /api-sa/v1/audio/download [get]
func (slf AudioCtl) AudioDownload(c *gin.Context) {
	var params request.ProcessAudio
	if err := c.ShouldBindQuery(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	audio, err := models.NewAudioSearch().SetID(params.ID).First()
	if err != nil {
		util.ResponseFormat(c, code.InternalError, "查询失败")
		return
	}
	filepath := ""
	if params.Filetype == 1 {
		filepath = audio.FilePath
		c.Header("Content-Type", "audio/mpeg") // 设置音频文件类型
	}
	if params.Filetype == 2 {
		filepath = audio.TxtFilePath
		//设置Content-Type为txt文件类型,避免中文乱码
		c.Header("Content-Type", "text/plain; charset=utf-8")
		c.Header("Content-Transfer-Encoding", "binary")
	}
	if filepath == "" {
		util.ResponseFormat(c, code.InternalError, "查询失败")
		return
	}

	file, err := os.Open(filepath)
	if err != nil {
		util.ResponseFormat(c, code.InternalError, "文件打开失败")
		return
	}
	defer file.Close()

	fileInfo, err := file.Stat()
	if err != nil {
		util.ResponseFormat(c, code.InternalError, "获取文件信息失败")
		return
	}

	c.Header("Content-Disposition", "inline; filename="+url.PathEscape(audio.Name)) // 在浏览器中直接打开
	c.Header("Content-Length", fmt.Sprint(fileInfo.Size()))

	if _, err := io.Copy(c.Writer, file); err != nil {
		util.ResponseFormat(c, code.InternalError, "文件传输失败")
		return
	}
}

// BatchProcess
// @Tags      音频
// @Summary   批量处理音频
// @Produce   application/json
// @Param     object  body request.BatchProcessAudio true  "参数"
// @Success   200 {object} util.Response "成功"
// @Router    /api-sa/v1/audio/batchProcess [post]
func (slf AudioCtl) BatchProcess(c *gin.Context) {
	var params request.BatchProcessAudio
	if err := c.ShouldBind(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	var failedNumber int
	for _, audioID := range params.IDs {
		err := service.Process(audioID)
		if err != nil {
			logx.Errorf("%v，编号: %v", err.Error(), audioID)
			failedNumber++
			continue
		}
	}

	if failedNumber == 0 {
		util.ResponseFormat(c, code.UpdateSuccess, "成功")
		return
	} else if failedNumber < len(params.IDs) {
		util.ResponseFormat(c, code.RequestParamError, "部分处理失败")
		return
	} else {
		util.ResponseFormat(c, code.RequestParamError, "全部处理失败")
		return
	}
}

// Delete
// @Tags      音频
// @Summary   删除音频
// @Produce   application/json
// @Param     object  body request.ProcessAudio true  "参数"
// @Success   200 {object} util.Response "成功"
// @Router    /api-sa/v1/audio/delete [delete]
func (slf AudioCtl) Delete(c *gin.Context) {
	var params request.ProcessAudio
	if err := c.ShouldBind(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	audio, err := models.NewAudioSearch().SetID(params.ID).First()
	if err != nil {
		util.ResponseFormat(c, code.RequestParamError, "音频不存在")
		return
	}

	if audio.AudioStatus == constvar.AudioStatusProcessing || audio.AudioStatus == constvar.AudioStatusFinish {
		util.ResponseFormat(c, code.RequestParamError, "音频正在处理或者处理完成，不可删除")
		return
	}

	err = service.DeleteAudio(params.ID)
	if err != nil {
		util.ResponseFormat(c, code.InternalError, err.Error())
		return
	}

	go func() {
		err = os.Remove(audio.FilePath)
		if err != nil {
			logx.Warnf("remove file err:%v, file:%v", err, audio.FilePath)
		}
	}()

	util.ResponseFormat(c, code.DeleteSuccess, "成功")
}

// BatchDelete
// @Tags      音频
// @Summary   批量删除音频
// @Produce   application/json
// @Param     object  body request.BatchProcessAudio true  "参数"
// @Success   200 {object} util.Response "成功"
// @Router    /api-sa/v1/audio/batchDelete [delete]
func (slf AudioCtl) BatchDelete(c *gin.Context) {
	var params request.BatchProcessAudio
	if err := c.ShouldBind(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	audioList, err := models.NewAudioSearch().SetIDs(params.IDs).FindNotTotal()
	if err != nil {
		util.ResponseFormat(c, code.InternalError, "内部错误")
		return
	}

	for _, audio := range audioList {
		if audio.AudioStatus == constvar.AudioStatusProcessing || audio.AudioStatus == constvar.AudioStatusFinish {
			util.ResponseFormat(c, code.RequestParamError, "音频正在处理或者处理完成，不可删除")
			return
		}
	}

	err = service.BatchDeleteAudio(params.IDs)
	if err != nil {
		util.ResponseFormat(c, code.InternalError, err.Error())
		return
	}

	go func() {
		for _, audio := range audioList {
			err = os.Remove(audio.FilePath)
			if err != nil {
				logx.Warnf("remove file err:%v, file:%v", err, audio.FilePath)
			}
		}
	}()

	util.ResponseFormat(c, code.DeleteSuccess, "成功")
}

// Follow
// @Tags      音频
// @Summary   关注/取消关注
// @Produce   application/json
// @Param     object  body request.FollowReq true  "参数"
// @Success   200 {object} util.Response{data=response.FollowResp} "成功"
// @Router    /api-sa/v1/audio/follow [post]
func (slf AudioCtl) Follow(c *gin.Context) {
	var params request.ProcessAudio
	if err := c.ShouldBind(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}

	followStatus, err := service.Follow(params.ID)
	if err != nil {
		util.ResponseFormat(c, code.InternalError, err.Error())
		return
	}
	resp := response.FollowResp{FollowStatus: followStatus}

	util.ResponseFormat(c, code.UpdateSuccess, resp)
}