mirror of
https://github.com/fumiama/paper-manager.git
synced 2026-06-08 09:34:42 +08:00
585 lines
14 KiB
Go
585 lines
14 KiB
Go
package global
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import (
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"bytes"
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"crypto/md5"
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"encoding/binary"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"image"
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"io"
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"os"
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"regexp"
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"strconv"
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"strings"
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"time"
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_ "image/jpeg"
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_ "image/png"
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_ "golang.org/x/image/webp"
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sql "github.com/FloatTech/sqlite"
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"github.com/corona10/goimagehash"
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base14 "github.com/fumiama/go-base16384"
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"github.com/fumiama/go-docx"
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"github.com/sirupsen/logrus"
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"github.com/fumiama/paper-manager/backend/utils"
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)
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const (
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FileTableList = "lst"
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FileTableFile = "file"
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FileTableTempFile = "tmpfile"
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FileTableQuestion = "question"
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FileTableTempQuestion = "tmpqstn"
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)
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var (
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ErrMajorSplitsTooShort = errors.New("major splits too short")
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ErrEmptyClass = errors.New("empty class")
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ErrHasntAnalyzed = errors.New("hasn't analyzed")
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ErrNoGetFileStatusPermission = errors.New("no get file status permission")
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)
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func init() {
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err := FileDB.db.Open(time.Hour)
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Create(FileTableList, &List{})
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Create(FileTableFile, &File{},
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"FOREIGN KEY(ListID) REFERENCES "+FileTableList+"(ID)",
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)
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Create(FileTableTempFile, &File{})
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Create(FileTableQuestion, &Question{})
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Create(FileTableTempQuestion, &Question{})
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Close()
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if err != nil {
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panic(err)
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}
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err = os.Chmod(FileDB.db.DBPath, 0600)
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if err != nil {
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panic(err)
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}
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err = FileDB.db.Open(time.Hour)
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if err != nil {
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panic(err)
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}
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}
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// File stores to paper/Class/2022-2023学年/第一学期/期末/A/xxx.docx
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type File struct {
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ID int64 // ID is the first 8 bytes of the original file's md5
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ListID int // ListID is the foreign key to List(ID)
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Year StudyYear
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Type PaperType
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Date uint32 // Date is the yyyymmdd of 考试日期
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Time time.Duration // Time is 考试时长
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Class string // Class is 考试科目
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Rate string // Rate is 成绩构成比例
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Questions []byte // Questions is for []QuestionJSON
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}
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// StudyYear 学年
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type StudyYear uint16
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// String ex. 2022-2023学年
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func (sy StudyYear) String() string {
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next := sy + 1
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return strconv.Itoa(int(sy)) + "-" + strconv.Itoa(int(next)) + "学年"
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}
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// AddFile from lst and copy it to analyzed path.
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// The para reg must belong to a valid user
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func (f *FileDatabase) AddFile(lstid int, reg *Regex, istemp bool, progress func(uint)) error {
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user, err := UserDB.GetUserByID(reg.ID)
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if err != nil {
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return err
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}
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if !user.IsFileManager() && !istemp {
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return ErrInvalidRole
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}
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progress(1)
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f.mu.RLock()
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lst, err := sql.Find[List](&f.db, FileTableList, "WHERE ID="+strconv.Itoa(lstid))
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f.mu.RUnlock()
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if err != nil {
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return err
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}
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if lst.Path == "" || strings.Contains(lst.Path, "..") {
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return os.ErrNotExist
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}
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tempath := lst.Path
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docf, err := os.Open(tempath)
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if err != nil {
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return err
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}
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defer docf.Close()
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progress(2)
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h := md5.New()
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_, err = io.Copy(h, docf)
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if err != nil {
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return err
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}
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var buf [md5.Size]byte
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id := int64(binary.LittleEndian.Uint64(h.Sum(buf[:0])))
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_, err = docf.Seek(0, io.SeekStart)
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if err != nil {
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return err
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}
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stat, err := docf.Stat()
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if err != nil {
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return err
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}
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sz := stat.Size()
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progress(3)
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doc, err := docx.Parse(docf, sz)
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if err != nil {
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return err
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}
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progress(5)
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doc.Document.Body.DropDrawingOf("NilPicture")
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majorre, err := regexp.Compile(reg.Major)
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if err != nil {
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return err
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}
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docs := doc.SplitByParagraph(docx.SplitDocxByPlainTextRegex(majorre))
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if len(docs) < 2 {
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return ErrMajorSplitsTooShort
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}
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progress(9)
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// filling File struct
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file := &File{
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ID: id,
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ListID: *lst.ID,
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}
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titlere, err := regexp.Compile(reg.Title)
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if err != nil {
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return err
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}
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classre, err := regexp.Compile(reg.Class)
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if err != nil {
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return err
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}
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opclre, err := regexp.Compile(reg.OpenCl)
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if err != nil {
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return err
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}
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datere, err := regexp.Compile(reg.Date)
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if err != nil {
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return err
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}
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timere, err := regexp.Compile(reg.Time)
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if err != nil {
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return err
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}
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ratere, err := regexp.Compile(reg.Rate)
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if err != nil {
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return err
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}
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progress(10)
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for _, it := range docs[0].Document.Body.Items {
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if p, ok := it.(*docx.Paragraph); ok {
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text := p.String()
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title := titlere.FindStringSubmatch(text)
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if len(title) >= 5 {
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years, semesters, mfs, abs := title[1], title[2], title[3], title[4]
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y, err := strconv.Atoi(years)
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if err != nil {
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return err
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}
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file.Year = StudyYear(y)
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if len(semesters) > 0 {
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file.Type = file.Type.SetFirstSecond(semesters[0])
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}
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file.Type = file.Type.SetMiddleFinal(mfs)
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if len(abs) > 0 {
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file.Type = file.Type.SetAB(abs[0])
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}
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}
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class := classre.FindStringSubmatch(text)
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if len(class) >= 3 {
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file.Class = class[2]
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}
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opcl := opclre.FindStringSubmatch(text)
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if len(opcl) >= 2 {
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file.Type = file.Type.SetOpenClose(opcl[1])
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}
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date := datere.FindStringSubmatch(text)
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if len(date) >= 4 {
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y, m, d := date[1], date[2], date[3]
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if y != "" && m != "" {
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if d == "" {
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d = "1"
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}
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yyyy, err := strconv.ParseUint(y, 10, 64)
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if err == nil && yyyy > 1600 {
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mm, err := strconv.ParseUint(m, 10, 64)
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if err == nil && mm >= 1 && mm <= 12 {
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dd, err := strconv.ParseUint(d, 10, 64)
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if err == nil && dd >= 1 && dd <= 31 {
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file.Date = uint32(yyyy*10000 + mm*100 + dd)
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}
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}
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}
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}
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}
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times := timere.FindStringSubmatch(text)
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if len(times) >= 2 {
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min, err := strconv.Atoi(times[1])
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if err == nil && min > 0 {
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file.Time = time.Minute * time.Duration(min)
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}
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}
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rate := ratere.FindStringSubmatch(text)
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if len(rate) >= 3 {
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file.Rate = rate[2]
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}
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}
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}
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progress(19)
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if file.Class == "" || strings.Contains(file.Class, "..") || strings.ContainsAny(file.Class, `/\`) {
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return ErrEmptyClass
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}
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filebasepath := ""
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if istemp {
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filebasepath = PaperFolder + "temp/" + strconv.Itoa(*user.ID) + "/" + file.Class + "/"
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} else {
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filebasepath = fmt.Sprintf(
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PaperFolder+file.Class+"/%v/%v/%v/%c/",
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file.Year, file.Type.FirstSecond(), file.Type.MiddleFinal(), file.Type.AB(),
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)
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}
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questionpath := filebasepath + "questions/"
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err = os.MkdirAll(questionpath, 0755)
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if err != nil {
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return err
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}
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docs = docs[1:]
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// parse questions
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subre, err := regexp.Compile(reg.Sub)
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if err != nil {
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return err
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}
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filequestions := make([]QuestionJSON, 0, len(docs))
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lst.QuesC = 0
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progress(20)
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p := uint(20)
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delta := uint(70 / len(docs))
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if delta == 0 {
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delta = 1
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}
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for _, majordoc := range docs {
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p += delta
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if p > 90 {
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p = 90
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}
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progress(p)
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majorq := QuestionJSON{}
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for _, it := range majordoc.Document.Body.Items {
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if p, ok := it.(*docx.Paragraph); ok {
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text := p.String()
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majorinfo := majorre.FindStringSubmatch(text)
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if len(majorinfo) >= 6 {
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name, points := majorinfo[2], majorinfo[5]
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majorq.Name = name
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majorq.Points, _ = strconv.Atoi(points)
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}
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}
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}
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subdocs := majordoc.SplitByParagraph(docx.SplitDocxByPlainTextRegex(subre))
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if len(subdocs) < 2 {
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continue
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}
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subdocs = subdocs[1:]
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majorq.Sub = make([]QuestionJSON, 0, len(subdocs))
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for _, subdoc := range subdocs {
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sb := bytes.NewBuffer(make([]byte, 0, 4096))
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for _, it := range subdoc.Document.Body.Items {
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sb.WriteString(fmt.Sprint(it))
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}
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m := md5.Sum(sb.Bytes())
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que := &Question{
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ID: int64(binary.LittleEndian.Uint64(m[:8])),
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Plain: base14.BytesToString(sb.Bytes()),
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Images: func() []byte {
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m := make(map[string]string)
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_ = subdoc.RangeRelationships(func(r *docx.Relationship) error {
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if r.Type != docx.REL_IMAGE {
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return nil
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}
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if r.Target == "" {
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return nil
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}
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i := strings.LastIndex(r.Target, "/")
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if i < 0 {
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return nil
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}
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name := r.Target[i+1:]
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if name == "" {
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return nil
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}
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md := subdoc.Media(name)
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if md == nil {
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return nil
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}
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img, _, err := image.Decode(bytes.NewReader(md.Data))
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if err != nil {
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return nil
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}
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dh, err := goimagehash.DifferenceHash(img)
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if err != nil {
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return nil
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}
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var buf [8]byte
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binary.LittleEndian.PutUint64(buf[:], dh.GetHash())
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m[name] = hex.EncodeToString(buf[:])
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return nil
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})
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if len(m) == 0 {
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return nil
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}
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data, err := json.Marshal(m)
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if err != nil {
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return nil
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}
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return data
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}(),
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Vector: func() []byte {
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words := utils.Segmenter.Cut(base14.BytesToString(sb.Bytes()), true)
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if len(words) == 0 {
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return nil
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}
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v := make(map[string]uint8, len(words)*2)
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for _, word := range words {
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if word != "" && !strings.Contains("\n 。，、的是使,.（）()1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ", word) {
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if v[word] == 0 { // 二值化
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v[word] = 1
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}
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}
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}
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data, err := json.Marshal(v)
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if err != nil {
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return nil
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}
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return data
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}(),
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}
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var q Question
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dupmap := make(map[string]float64, 64)
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f.mu.RLock()
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err = f.db.FindFor(FileTableQuestion, &q, "", func() error {
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r, err := q.GetDuplicateRate(que)
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if err != nil {
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logrus.Warnln("[global.AddFile] GetDuplicateRate err:", err)
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return err
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}
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if r < 0.5 {
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return nil
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}
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var buf [8]byte
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binary.LittleEndian.PutUint64(buf[:], uint64(q.ID))
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dupmap[hex.EncodeToString(buf[:])] = r
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return nil
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})
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f.mu.RUnlock()
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if err == nil && len(dupmap) > 0 {
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que.Dup, _ = json.Marshal(dupmap)
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}
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w := bytes.NewBuffer(make([]byte, 0, 65536))
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_, err = subdoc.WriteTo(w)
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var buf [8]byte
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binary.LittleEndian.PutUint64(buf[:], uint64(que.ID))
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queidstr := hex.EncodeToString(buf[:])
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if err == nil {
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m5 := md5.Sum(w.Bytes())
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quepath := questionpath + hex.EncodeToString(m5[:]) + ".docx"
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qf, err := os.Create(quepath)
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if err == nil {
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_, _ = io.Copy(qf, w)
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_ = qf.Close()
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}
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que.Path = quepath
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if istemp {
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f.mu.Lock()
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_ = f.db.Insert(FileTableTempQuestion, que)
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f.mu.Unlock()
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} else {
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f.mu.Lock()
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for k, v := range dupmap {
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err = f.db.Find(FileTableQuestion, &q, "WHERE ID=0x"+k)
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if err == nil {
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thismap := make(map[string]float64, 64)
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err := json.Unmarshal(q.Dup, &thismap)
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if err == nil {
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thismap[queidstr] = v
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q.Dup, err = json.Marshal(thismap)
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if err == nil {
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_ = f.db.Insert(FileTableQuestion, &q)
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}
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}
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}
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}
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_ = f.db.Insert(FileTableQuestion, que)
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f.mu.Unlock()
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}
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}
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r := 0.0
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for _, v := range dupmap {
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if v > r {
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r = v
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}
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}
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majorq.Sub = append(majorq.Sub, QuestionJSON{
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Name: queidstr, //TODO: fill sub points
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})
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}
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filequestions = append(filequestions, majorq)
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lst.QuesC += len(majorq.Sub)
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}
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progress(90)
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file.Questions, _ = json.Marshal(filequestions)
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_, err = docf.Seek(0, io.SeekStart)
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if err != nil {
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return err
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}
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lst.Path = filebasepath + file.Class + ".docx"
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lst.HasntAnalyzed = false
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lst.Desc = fmt.Sprintf("%s%v%v%v%c卷",
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file.Class, file.Year, file.Type.FirstSecond(), file.Type.MiddleFinal(), file.Type.AB(),
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)
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dstf, err := os.Create(lst.Path)
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if err != nil {
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return err
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}
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defer dstf.Close()
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_, err = io.Copy(dstf, docf)
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if err != nil {
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return err
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}
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progress(95)
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f.mu.Lock()
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if istemp {
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err = f.db.Insert(FileTableTempFile, file)
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lst.IsTemp = true
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} else {
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err = f.db.Insert(FileTableFile, file)
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lst.IsTemp = false
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}
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_ = f.db.Insert(FileTableList, &lst)
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f.mu.Unlock()
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progress(100)
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return err
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}
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// DelFile by listid
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func (f *FileDatabase) DelFile(lstid, uid int, istemp bool) error {
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user, err := UserDB.GetUserByID(uid)
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if err != nil {
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return err
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}
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if !user.IsSuper() && !istemp {
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return ErrInvalidRole
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}
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ftable := ""
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if istemp {
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ftable = FileTableTempFile
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} else {
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ftable = FileTableFile
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}
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f.mu.RLock()
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lst, err := sql.Find[List](&f.db, FileTableList, "WHERE ID="+strconv.Itoa(lstid))
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f.mu.RUnlock()
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if err != nil {
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return err
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}
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if istemp && lst.Uploader != uid {
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return ErrInvalidRole
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}
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if lst.Path == "" || strings.Contains(lst.Path, "..") {
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return os.ErrNotExist
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}
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err = f.db.Del(FileTableList, "WHERE ID="+strconv.Itoa(lstid))
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if err != nil {
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return err
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}
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if lst.HasntAnalyzed {
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return os.RemoveAll(lst.Path)
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}
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i := strings.LastIndex(lst.Path, "/")
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if i <= 0 {
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return os.ErrNotExist
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}
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parentfolder := lst.Path[:i]
|
||
if utils.IsNotExist(parentfolder) {
|
||
return os.ErrNotExist
|
||
}
|
||
f.mu.RLock()
|
||
file, err := sql.Find[File](&f.db, ftable, "WHERE ListID="+strconv.Itoa(lstid))
|
||
f.mu.RUnlock()
|
||
if err != nil {
|
||
return err
|
||
}
|
||
err = f.db.Del(ftable, "WHERE ListID="+strconv.Itoa(lstid))
|
||
if err != nil {
|
||
return err
|
||
}
|
||
ques := make([]QuestionJSON, 0, 64)
|
||
err = json.Unmarshal(file.Questions, &ques)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
for _, q := range ques {
|
||
q.Delete(f, istemp)
|
||
}
|
||
return os.RemoveAll(parentfolder)
|
||
}
|
||
|
||
// GetFile get analyzed file's structure from List(ID)
|
||
func (f *FileDatabase) GetFile(lstid, uid int) (file *File, sz int64, istemp bool, err error) {
|
||
f.mu.RLock()
|
||
defer f.mu.RUnlock()
|
||
lst, err := sql.Find[List](&f.db, FileTableList, "WHERE ID="+strconv.Itoa(lstid))
|
||
if err != nil {
|
||
return
|
||
}
|
||
if lst.HasntAnalyzed {
|
||
err = ErrHasntAnalyzed
|
||
return
|
||
}
|
||
if lst.IsTemp && lst.Uploader != uid {
|
||
err = ErrNoGetFileStatusPermission
|
||
return
|
||
}
|
||
ftable := ""
|
||
if lst.IsTemp {
|
||
ftable = FileTableTempFile
|
||
} else {
|
||
ftable = FileTableFile
|
||
}
|
||
filestruct, err := sql.Find[File](&f.db, ftable, "WHERE ListID="+strconv.Itoa(lstid))
|
||
if err != nil {
|
||
return
|
||
}
|
||
return &filestruct, lst.Size, lst.IsTemp, nil
|
||
}
|