// Package common
// @Link  https://github.com/bufanyun/hotgo
// @Copyright  Copyright (c) 2023 HotGo CLI
// @Author  Ms <133814250@qq.com>
// @License  https://github.com/bufanyun/hotgo/blob/master/LICENSE
package common

import (
	"context"
	"hotgo/api/admin/common"
	"hotgo/internal/library/storager"
	"hotgo/internal/service"
	"hotgo/utility/validate"
	"os"
	"os/exec"
	"path/filepath"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/google/uuid"
)

var Upload = new(cUpload)

type cUpload struct{}

// UploadFile 上传文件
func (c *cUpload) UploadFile(ctx context.Context, _ *common.UploadFileReq) (res common.UploadFileRes, err error) {
	r := g.RequestFromCtx(ctx)
	uploadType := r.Header.Get("uploadType")
	if uploadType != "default" && !validate.InSlice(storager.KindSlice, uploadType) {
		err = gerror.New("上传类型是无效的")
		return
	}

	file := r.GetUploadFile("file")
	if file == nil {
		err = gerror.New("没有找到上传的文件")
		return
	}
	return service.CommonUpload().UploadFile(ctx, uploadType, file)
}

// UploadVideo 上传视频
func (c *cUpload) UploadVideo(ctx context.Context, _ *common.UploadVideoReq) (res common.UploadVideoRes, err error) {
	r := g.RequestFromCtx(ctx)
	uploadType := r.Header.Get("uploadType")
	if uploadType != "default" && !validate.InSlice(storager.KindSlice, uploadType) {
		err = gerror.New("上传类型是无效的")
		return
	}

	file := r.GetUploadFile("file")
	if file == nil {
		err = gerror.New("没有找到上传的文件")
		return
	}

	// 1. 保存上传视频到本地临时目录
	tmpDir := "./tmp/video"
	_, _ = file.Save(tmpDir)
	tmpFile := tmpDir + "/" + file.Filename

	// 2. 用ffmpeg切片为m3u8和ts文件

	m3u8UUID := uuid.New().String()

	hlsDir := "./tmp/hls/" + m3u8UUID
	_ = os.MkdirAll(hlsDir, 0755)

	defer func() {
		os.RemoveAll(hlsDir)
	}()

	m3u8File := m3u8UUID + ".m3u8"
	m3u8Path := hlsDir + "/" + m3u8File
	ffmpegCmd := exec.Command("ffmpeg", "-i", tmpFile, "-c:v", "libx264", "-hls_time", "10", "-hls_playlist_type", "vod", m3u8Path)
	err = ffmpegCmd.Run()
	if err != nil {
		err = gerror.Wrap(err, "ffmpeg切片失败")
		return
	}

	// 3. 遍历切片目录，上传所有m3u8和ts文件到minio
	minioDrive := new(storager.MinioDrive)
	var m3u8MinioPath string
	files, _ := filepath.Glob(hlsDir + "/*")
	for _, f := range files {
		fileInfo, errStat := os.Stat(f)
		if errStat == nil && !fileInfo.IsDir() {
			minioPath, err2 := minioDrive.UploadFromPath(ctx, f, filepath.Base(f))
			if err2 != nil {
				err = err2
				return
			}
			if filepath.Ext(f) == ".m3u8" {
				m3u8MinioPath = minioPath
			}
		}
	}

	// 4. 返回m3u8文件的minio路径
	return common.UploadVideoRes{
		Path: m3u8MinioPath,
	}, nil
}

// CheckMultipart 检查文件分片
func (c *cUpload) CheckMultipart(ctx context.Context, req *common.CheckMultipartReq) (res *common.CheckMultipartRes, err error) {
	data, err := service.CommonUpload().CheckMultipart(ctx, &req.CheckMultipartInp)
	if err != nil {
		return nil, err
	}
	res = new(common.CheckMultipartRes)
	res.CheckMultipartModel = data
	return
}

// UploadPart 上传分片
func (c *cUpload) UploadPart(ctx context.Context, req *common.UploadPartReq) (res *common.UploadPartRes, err error) {
	data, err := service.CommonUpload().UploadPart(ctx, &req.UploadPartInp)
	if err != nil {
		return nil, err
	}
	res = new(common.UploadPartRes)
	res.UploadPartModel = data
	return
}