package conversion

import (
	IC "app.yhyue.com/moapp/jy_docs/rpc/partnerlib/init"
	"app.yhyue.com/moapp/jy_docs/rpc/partnerlib/util"
	"app.yhyue.com/moapp/jy_docs/services/model"
	"app.yhyue.com/moapp/jy_docs/services/partner"
	"app.yhyue.com/moapp/jyfs/rpc/filesystem"
	"fmt"
	"os"
	"os/exec"
	"sync"
	"time"
)

type Conversion struct {
	DocId    string
	FileName string
	FileId   string
	Suffix   string
	Content  []byte
	Size     int
}

var (
	CL         = &sync.Mutex{}
	filePath   = "conversion/input"
	fileSuffix = "pdf"
)

func NewConversion(docId, fileName, fileId, suffix string, b []byte, size int) *Conversion {
	return &Conversion{
		DocId:    docId,
		FileName: fileName,
		FileId:   fileId,
		Suffix:   suffix,
		Content:  b,
		Size:     size,
	}
}
func (c *Conversion) ToConversion() (msg string) {
	CL.Lock()
	defer CL.Unlock()
	// 检查目录是否存在
	_, err := os.Stat(filePath)
	if os.IsNotExist(err) {
		// 创建输出文件夹
		err := os.MkdirAll(filePath, 0755)
		if err != nil {
			msg = fmt.Sprintf("Error creating output folder:%s", err.Error())
			return
		}
	}
	//写入文件
	inputFile := fmt.Sprintf("%s/%s.%s", filePath, c.FileId, c.Suffix)
	file, err := os.Create(inputFile)
	if err != nil {
		msg = fmt.Sprintf("Error creating file:%s", err.Error())
		return
	}
	defer file.Close()
	// 设置文件权限
	err = file.Chmod(0777)
	if err != nil {
		msg = fmt.Sprintf("Error setting file permissions for %s: %v\n", filePath, err)
		return
	}
	// 写入文件流
	_, err = file.Write(c.Content)
	if err != nil {
		msg = fmt.Sprintf("Error writing to file:%s", err.Error())
		return
	}
	// 开始执行转换
	cmd := exec.Command("unoconv", "-f", fileSuffix, inputFile)
	cmd.Stdout = nil
	cmd.Stderr = nil
	err = cmd.Run()
	if err != nil {
		msg = fmt.Sprintf("conversion failed: %s", err.Error())
		return
	}
	pdfFile := fmt.Sprintf("%s/%s.%s", filePath, c.FileId, fileSuffix)
	c.Content, err = os.ReadFile(pdfFile)
	if err != nil {
		msg = fmt.Sprintf("read pdf err:%s", err.Error())
		return
	}
	if len(c.Content) > 0 {
		//上传文件
		fileRes := util.FileUpload(&filesystem.SaveFileReq{
			Domain: IC.C.OssInfo.BucketName,
			FileId: fmt.Sprintf("%s.%s", c.FileId, fileSuffix),
			Meta: map[string]string{
				"docName":   c.FileName,
				"docSuffix": fileSuffix,
				"docSize":   fmt.Sprintf("%d", c.Size),
			},
			RawFileContent: c.Content,
			Charset:        util.GetFileChardet(c.Content),
		})
		if fileRes.OssDocId == "" {
			msg = fmt.Sprintf(" upload oss err:%s", fileRes.Msg)
		} else {
			//移除文件
			os.Remove(inputFile)
			os.Remove(pdfFile)
			if err = partner.DocsUpdate(2, model.Doc{
				Id:         c.DocId,
				OssPdfId:   fmt.Sprintf("%s.%s", c.FileId, fileSuffix),
				UpdateDate: time.Now(),
			}); err != nil {
				msg = fmt.Sprintf(" update doc  osspdfid err :%s", err.Error())
			}
		}
	}
	return
}