mirror of
https://github.com/fumiama/paper-manager.git
synced 2026-06-06 16:30:23 +08:00
299 lines
7.7 KiB
Go
299 lines
7.7 KiB
Go
package backend
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import (
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"errors"
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"net/http"
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"strconv"
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"strings"
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"time"
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sql "github.com/FloatTech/sqlite"
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"github.com/fumiama/paper-manager/backend/global"
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"github.com/fumiama/paper-manager/backend/utils"
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"github.com/sirupsen/logrus"
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)
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var (
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errNoDeletePermission = errors.New("no delete permission")
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errExtractUIDError = errors.New("extract uid error")
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errParseFilePath = errors.New("parse filepath error")
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errNoDownloadPermission = errors.New("no download permission")
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)
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type filelist struct {
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ID int `json:"id"`
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Title string `json:"title"`
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Desc string `json:"description"`
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Size float64 `json:"size"`
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Ques int `json:"questions"`
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Auth string `json:"author"`
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Date string `json:"datetime"`
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Per uint `json:"percent"`
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}
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func getFileList(count int, istemp bool) ([]filelist, error) {
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lst, err := global.FileDB.ListUploadedFile(istemp)
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if err != nil && err != sql.ErrNullResult {
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return nil, err
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}
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if count > 0 && len(lst) > count {
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lst = lst[:count]
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}
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result := make([]filelist, len(lst))
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for i, v := range lst {
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result[i].ID = *v.ID
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j := strings.LastIndex(v.Path, "/")
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if j <= 0 {
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result[i].Title = v.Path
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} else {
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result[i].Title = v.Path[j+1:]
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}
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result[i].Desc = v.Desc
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result[i].Size = float64(v.Size) / 1024 / 1024 // MB
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result[i].Ques = v.QuesC
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result[i].Auth = v.UpName
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result[i].Date = time.Unix(v.UpTime, 0).Format(chineseYYMMDDLayout)
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if !v.HasntAnalyzed {
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result[i].Per = 100
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} else {
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result[i].Per = analyzeper.Get(*v.ID)
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}
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}
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return result, nil
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}
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func getFileInfo(lstid int) (*filelist, error) {
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lst, err := global.FileDB.ListFileByID(lstid)
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if err != nil && err != sql.ErrNullResult {
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return nil, err
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}
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result := filelist{
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ID: lstid,
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Desc: lst.Desc,
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Size: float64(lst.Size) / 1024 / 1024, // MB
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Ques: lst.QuesC,
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Auth: lst.UpName,
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Date: time.Unix(lst.UpTime, 0).Format(chineseYYMMDDLayout),
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}
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j := strings.LastIndex(lst.Path, "/")
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if j <= 0 {
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result.Title = lst.Path
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} else {
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result.Title = lst.Path[j+1:]
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}
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if !lst.HasntAnalyzed {
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result.Per = 100
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} else {
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result.Per = analyzeper.Get(lstid)
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}
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return &result, nil
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}
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func dlFile(lstid int, user *global.User) (string, error) {
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lst, err := global.FileDB.ListFileByID(lstid)
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if err != nil {
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return "", err
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}
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if strings.HasPrefix(lst.Path, global.PaperFolder+"tmp/") {
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uidstr := lst.Path[17:]
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i := strings.Index(uidstr, "/")
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if i <= 0 {
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return "", errExtractUIDError
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}
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uid, err := strconv.Atoi(uidstr[:i])
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if err != nil {
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return "", err
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}
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if uid != *user.ID {
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return "", errNoDownloadPermission
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}
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return lst.Path[6:], nil
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}
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if strings.HasPrefix(lst.Path, global.PaperFolder) {
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return lst.Path[6:], nil
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}
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return "", errParseFilePath
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}
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type filestatus struct {
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Name string `json:"name"`
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Size float64 `json:"size"`
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Rate float64 `json:"rate"`
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Questions []question `json:"questions"`
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Duplications []duplication `json:"duplications"` // Duplications length == 10
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}
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func getFileStatus(lstid int, user *global.User) (*filestatus, error) {
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file, sz, istemp, err := global.FileDB.GetFile(lstid, *user.ID)
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if err != nil {
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return nil, err
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}
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qs, ds, filerate, err := parseFileQuestions(file.Questions, istemp)
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if err != nil {
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return nil, err
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}
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return &filestatus{
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Name: file.Class + ".docx",
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Size: float64(sz) / 1024 / 1024, // MB
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Rate: filerate * 100,
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Questions: qs,
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Duplications: ds,
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}, nil
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}
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func init() {
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apimap["/api/getFileList"] = &apihandler{"GET", func(w http.ResponseWriter, r *http.Request) {
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token := r.Header.Get("Authorization")
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user := usertokens.Get(token)
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if user == nil {
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writeresult(w, codeError, nil, errInvalidToken.Error(), typeError)
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return
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}
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istemp := r.URL.Query().Get("permanent") != "true"
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count := -1
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var err error
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countstr := r.URL.Query().Get("count")
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if countstr != "" {
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count, err = strconv.Atoi(countstr)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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}
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lst, err := getFileList(count, istemp)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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writeresult(w, codeSuccess, &lst, messageOk, typeSuccess)
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}}
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apimap["/api/getFileInfo"] = &apihandler{"GET", func(w http.ResponseWriter, r *http.Request) {
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token := r.Header.Get("Authorization")
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user := usertokens.Get(token)
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if user == nil {
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writeresult(w, codeError, nil, errInvalidToken.Error(), typeError)
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return
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}
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var err error
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idstr := r.URL.Query().Get("id")
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if idstr == "" {
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writeresult(w, codeError, nil, "empty id", typeError)
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return
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}
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id, err := strconv.Atoi(idstr)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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inf, err := getFileInfo(id)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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writeresult(w, codeSuccess, inf, messageOk, typeSuccess)
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}}
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apimap["/api/delFile"] = &apihandler{"GET", func(w http.ResponseWriter, r *http.Request) {
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token := r.Header.Get("Authorization")
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user := usertokens.Get(token)
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if user == nil {
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writeresult(w, codeError, nil, errInvalidToken.Error(), typeError)
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return
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}
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istemp := r.URL.Query().Get("permanent") != "true"
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if !user.IsSuper() && !istemp {
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writeresult(w, codeError, nil, errNoDeletePermission.Error(), typeError)
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return
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}
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idstr := r.URL.Query().Get("id")
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if idstr == "" {
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writeresult(w, codeError, nil, "empty id", typeError)
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return
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}
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id, err := strconv.Atoi(idstr)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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err = global.FileDB.DelFile(id, *user.ID, istemp)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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writeresult(w, codeSuccess, "删除成功", messageOk, typeSuccess)
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}}
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apimap["/api/dlFile"] = &apihandler{"GET", func(w http.ResponseWriter, r *http.Request) {
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token := r.Header.Get("Authorization")
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user := usertokens.Get(token)
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if user == nil {
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writeresult(w, codeError, nil, errInvalidToken.Error(), typeError)
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return
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}
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idstr := r.URL.Query().Get("id")
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if idstr == "" {
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writeresult(w, codeError, nil, "empty id", typeError)
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return
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}
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id, err := strconv.Atoi(idstr)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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type message struct {
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URL string `json:"url"`
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}
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u, err := dlFile(id, user)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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writeresult(w, codeSuccess, &message{URL: u}, messageOk, typeSuccess)
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}}
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apimap["/api/getFileStatus"] = &apihandler{"GET", func(w http.ResponseWriter, r *http.Request) {
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token := r.Header.Get("Authorization")
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user := usertokens.Get(token)
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if user == nil {
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writeresult(w, codeError, nil, errInvalidToken.Error(), typeError)
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return
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}
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idstr := r.URL.Query().Get("id")
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if idstr == "" {
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writeresult(w, codeError, nil, "empty id", typeError)
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return
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}
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id, err := strconv.Atoi(idstr)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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fstat, err := getFileStatus(id, user)
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if err != nil {
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writeresult(w, codeError, nil, err.Error(), typeError)
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return
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}
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writeresult(w, codeSuccess, fstat, messageOk, typeSuccess)
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}}
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}
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// FileHandler serves contents in global.FileFolder
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func FileHandler(w http.ResponseWriter, r *http.Request) {
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if !utils.IsMethod("GET", w, r) {
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return
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}
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global.UserDB.VisitAPI()
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if r.URL.Path[0] != '/' {
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r.URL.Path = "/" + r.URL.Path
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}
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fn := r.URL.Path[6:] // skip /file/
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if fn == "" {
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http.Error(w, "400 Bad Request: empty path", http.StatusBadRequest)
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return
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}
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name := global.FileFolder + fn
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logrus.Infoln("[file.FileHandler] serve", name)
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http.ServeFile(w, r, name)
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}
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