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directory.go
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package notebrew
import (
"database/sql"
"encoding/json"
"errors"
"html/template"
"io/fs"
"net/http"
"net/url"
"path"
"slices"
"strconv"
"strings"
"time"
"github.com/bokwoon95/notebrew/sq"
"github.com/bokwoon95/notebrew/stacktrace"
"golang.org/x/sync/errgroup"
)
func (nbrew *Notebrew) directory(w http.ResponseWriter, r *http.Request, user User, sitePrefix, filePath string, fileInfo fs.FileInfo) {
type File struct {
FileID ID `json:"fileID"`
Parent string `json:"parent"`
Name string `json:"name"`
IsDir bool `json:"isDir"`
ModTime time.Time `json:"modTime"`
CreationTime time.Time `json:"creationTime"`
Size int64 `json:"size"`
}
type Response struct {
ContentBaseURL string `json:"contentBaseURL"`
CDNDomain string `json:"cdnDomain"`
IsDatabaseFS bool `json:"isDatabaseFS"`
SitePrefix string `json:"sitePrefix"`
UserID ID `json:"userID"`
Username string `json:"username"`
TimezoneOffsetSeconds int `json:"timezoneOffsetSeconds"`
DisableReason string `json:"disableReason"`
FileID ID `json:"fileID"`
FilePath string `json:"filePath"`
IsDir bool `json:"isDir"`
ModTime time.Time `json:"modTime"`
CreationTime time.Time `json:"creationTime"`
UploadableExts []string `json:"uploadableExts"`
PinnedFiles []File `json:"pinnedFiles"`
Files []File `json:"files"`
Sort string `json:"sort"`
Order string `json:"order"`
From string `json:"from"`
FromEdited string `json:"fromEdited"`
FromCreated string `json:"fromCreated"`
FromSize string `json:"fromSize"`
Before string `json:"before"`
BeforeEdited string `json:"beforeEdited"`
BeforeCreated string `json:"beforeCreated"`
BeforeSize string `json:"beforeSize"`
Limit int `json:"limit"`
PreviousURL string `json:"previousURL"`
NextURL string `json:"nextURL"`
RegenerationStats RegenerationStats `json:"regenerationStats"`
PostRedirectGet map[string]any `json:"postRedirectGet"`
}
const dateFormat = "2006-01-02"
const timeFormat = "2006-01-02T150405.999999999-0700"
const zuluTimeFormat = "2006-01-02T150405.999999999Z"
writeResponse := func(w http.ResponseWriter, r *http.Request, response Response) {
if response.PinnedFiles == nil {
response.PinnedFiles = []File{}
}
if response.Files == nil {
response.Files = []File{}
}
if r.Form.Has("api") {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
encoder := json.NewEncoder(w)
encoder.SetIndent("", " ")
encoder.SetEscapeHTML(false)
err := encoder.Encode(&response)
if err != nil {
nbrew.GetLogger(r.Context()).Error(err.Error())
}
return
}
referer := nbrew.GetReferer(r)
clipboard := make(url.Values)
isInClipboard := make(map[string]bool)
cookie, _ := r.Cookie("clipboard")
if cookie != nil {
values, err := url.ParseQuery(cookie.Value)
if err == nil {
sourceSitePrefix := values.Get("sitePrefix")
if sourceSitePrefix == sitePrefix {
if values.Has("cut") {
clipboard.Set("cut", "")
}
clipboard.Set("sitePrefix", sourceSitePrefix)
clipboard.Set("parent", values.Get("parent"))
for _, name := range values["name"] {
if isInClipboard[name] {
continue
}
clipboard.Add("name", name)
isInClipboard[name] = true
}
}
}
}
isSeeking := response.From != "" || response.FromEdited != "" || response.FromCreated != "" ||
response.Before != "" || response.BeforeEdited != "" || response.BeforeCreated != ""
funcMap := map[string]any{
"join": path.Join,
"dir": path.Dir,
"base": path.Base,
"ext": path.Ext,
"hasPrefix": strings.HasPrefix,
"hasSuffix": strings.HasSuffix,
"trimPrefix": strings.TrimPrefix,
"trimSuffix": strings.TrimSuffix,
"joinStrings": strings.Join,
"humanReadableFileSize": HumanReadableFileSize,
"stylesCSS": func() template.CSS { return template.CSS(StylesCSS) },
"baselineJS": func() template.JS { return template.JS(BaselineJS) },
"referer": func() string { return referer },
"clipboard": func() url.Values { return clipboard },
"safeHTML": func(s string) template.HTML { return template.HTML(s) },
"float64ToInt64": func(n float64) int64 { return int64(n) },
"formatTime": func(t time.Time, layout string, offset int) string {
return t.In(time.FixedZone("", offset)).Format(layout)
},
"head": func(s string) string {
head, _, _ := strings.Cut(s, "/")
return head
},
"tail": func(s string) string {
_, tail, _ := strings.Cut(s, "/")
return tail
},
"getFileType": func(name string) FileType {
return AllowedFileTypes[strings.ToLower(path.Ext(name))]
},
"generateBreadcrumbLinks": func(sitePrefix, filePath string) template.HTML {
var b strings.Builder
b.WriteString("<a href='/files/'>files</a>")
segments := strings.Split(filePath, "/")
if sitePrefix != "" {
segments = append([]string{sitePrefix}, segments...)
}
for i := 0; i < len(segments); i++ {
if segments[i] == "" {
continue
}
href := "/files/" + path.Join(segments[:i+1]...) + "/"
b.WriteString(" / <a href='" + template.HTMLEscapeString(href) + "'>" + template.HTMLEscapeString(segments[i]) + "</a>")
}
b.WriteString(" /")
return template.HTML(b.String())
},
"isInClipboard": func(name string) bool {
if sitePrefix != clipboard.Get("sitePrefix") {
return false
}
if response.FilePath != clipboard.Get("parent") {
return false
}
return isInClipboard[name]
},
"jsonArray": func(s []string) (string, error) {
b, err := json.Marshal(s)
if err != nil {
return "", err
}
return string(b), nil
},
"sortBy": func(sort string) template.URL {
queryParams := "?persist" +
"&sort=" + url.QueryEscape(sort) +
"&order=" + url.QueryEscape(response.Order) +
"&limit=" + strconv.Itoa(response.Limit)
if isSeeking && response.IsDatabaseFS && len(response.Files) > 0 {
firstFile := response.Files[0]
queryParams += "&from=" + url.QueryEscape(firstFile.Name) +
"&fromEdited=" + url.QueryEscape(firstFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&fromCreated=" + url.QueryEscape(firstFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&fromSize=" + strconv.FormatInt(firstFile.Size, 10)
}
return template.URL(queryParams)
},
"orderBy": func(order string) template.URL {
queryParams := "?persist" +
"&sort=" + url.QueryEscape(response.Sort) +
"&order=" + url.QueryEscape(order) +
"&limit=" + strconv.Itoa(response.Limit)
if isSeeking && response.IsDatabaseFS && len(response.Files) > 0 {
firstFile := response.Files[0]
queryParams += "&from=" + url.QueryEscape(firstFile.Name) +
"&fromEdited=" + url.QueryEscape(firstFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&fromCreated=" + url.QueryEscape(firstFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&fromSize=" + strconv.FormatInt(firstFile.Size, 10)
}
return template.URL(queryParams)
},
"limitTo": func(limit int) template.URL {
var b strings.Builder
b.WriteString("?persist")
b.WriteString("&sort=" + url.QueryEscape(response.Sort))
b.WriteString("&order=" + url.QueryEscape(response.Order))
b.WriteString("&limit=" + strconv.Itoa(limit))
if response.From != "" {
b.WriteString("&from=" + url.QueryEscape(response.From))
}
if response.FromEdited != "" {
b.WriteString("&fromEdited=" + url.QueryEscape(response.FromEdited))
}
if response.FromCreated != "" {
b.WriteString("&fromCreated=" + url.QueryEscape(response.FromCreated))
}
if response.FromSize != "" {
b.WriteString("&fromSize=" + url.QueryEscape(response.FromSize))
}
if response.Before != "" {
b.WriteString("&before=" + url.QueryEscape(response.Before))
}
if response.BeforeEdited != "" {
b.WriteString("&beforeEdited=" + url.QueryEscape(response.BeforeEdited))
}
if response.BeforeCreated != "" {
b.WriteString("&beforeCreated=" + url.QueryEscape(response.BeforeCreated))
}
if response.BeforeSize != "" {
b.WriteString("&beforeSize=" + url.QueryEscape(response.BeforeSize))
}
return template.URL(b.String())
},
}
tmpl, err := template.New("directory.html").Funcs(funcMap).ParseFS(RuntimeFS, "embed/directory.html")
if err != nil {
nbrew.GetLogger(r.Context()).Error(err.Error())
nbrew.InternalServerError(w, r, err)
return
}
w.Header().Set("Content-Security-Policy", nbrew.ContentSecurityPolicy)
nbrew.ExecuteTemplate(w, r, tmpl, &response)
}
if r.Method != "GET" && r.Method != "HEAD" {
nbrew.MethodNotAllowed(w, r)
return
}
head, _, _ := strings.Cut(filePath, "/")
if head != "notes" && head != "pages" && head != "posts" && head != "output" {
nbrew.NotFound(w, r)
return
}
var response Response
_, err := nbrew.GetFlashSession(w, r, &response)
if err != nil {
nbrew.GetLogger(r.Context()).Error(err.Error())
}
response.ContentBaseURL = nbrew.ContentBaseURL(sitePrefix)
response.CDNDomain = nbrew.CDNDomain
switch v := nbrew.FS.(type) {
case interface{ As(any) bool }:
response.IsDatabaseFS = v.As(&DatabaseFS{})
}
response.SitePrefix = sitePrefix
response.UserID = user.UserID
response.Username = user.Username
response.TimezoneOffsetSeconds = user.TimezoneOffsetSeconds
response.DisableReason = user.DisableReason
if databaseFileInfo, ok := fileInfo.(*DatabaseFileInfo); ok {
response.FileID = databaseFileInfo.FileID
response.ModTime = databaseFileInfo.ModTime()
response.CreationTime = databaseFileInfo.CreationTime
} else {
var absolutePath string
switch v := nbrew.FS.(type) {
case interface{ As(any) bool }:
var directoryFS *DirectoryFS
if v.As(&directoryFS) {
absolutePath = path.Join(directoryFS.RootDir, sitePrefix, filePath)
}
}
response.CreationTime = CreationTime(absolutePath, fileInfo)
}
response.FilePath = filePath
response.IsDir = true
var sortCookie, orderCookie, limitCookie *http.Cookie
for _, cookie := range r.Cookies() {
switch cookie.Name {
case "sort":
sortCookie = cookie
case "order":
orderCookie = cookie
case "limit":
limitCookie = cookie
}
}
response.Sort = strings.ToLower(strings.TrimSpace(r.Form.Get("sort")))
if response.Sort == "" && sortCookie != nil {
response.Sort = sortCookie.Value
}
switch response.Sort {
case "name", "edited", "created", "size":
break
default:
if head == "notes" {
response.Sort = "edited"
} else if head == "posts" {
response.Sort = "created"
} else {
response.Sort = "name"
}
}
response.Order = strings.ToLower(strings.TrimSpace(r.Form.Get("order")))
if response.Order == "" && orderCookie != nil {
response.Order = orderCookie.Value
}
switch response.Order {
case "asc", "desc":
break
default:
if response.Sort == "created" || response.Sort == "edited" {
response.Order = "desc"
} else {
response.Order = "asc"
}
}
response.Limit, _ = strconv.Atoi(r.Form.Get("limit"))
if response.Limit == 0 && limitCookie != nil {
response.Limit, _ = strconv.Atoi(limitCookie.Value)
}
if response.Limit <= 0 {
response.Limit = 200
}
if r.Form.Has("persist") {
if r.Form.Has("sort") {
isDefaultSort := false
if head == "notes" {
isDefaultSort = response.Sort == "edited"
} else if head == "posts" {
isDefaultSort = response.Sort == "created"
} else {
isDefaultSort = response.Sort == "name"
}
if isDefaultSort {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "sort",
Value: "0",
MaxAge: -1,
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
} else {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "sort",
Value: response.Sort,
MaxAge: int((time.Hour * 24 * 365).Seconds()),
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
}
}
if r.Form.Has("order") {
isDefaultOrder := false
if response.Sort == "created" || response.Sort == "edited" {
isDefaultOrder = response.Order == "desc"
} else {
isDefaultOrder = response.Order == "asc"
}
if isDefaultOrder {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "order",
Value: "0",
MaxAge: -1,
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
} else {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "order",
Value: response.Order,
MaxAge: int((time.Hour * 24 * 365).Seconds()),
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
}
}
if r.Form.Has("limit") {
if response.Limit == 0 || response.Limit == 200 {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "limit",
Value: "0",
MaxAge: -1,
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
} else {
http.SetCookie(w, &http.Cookie{
Path: r.URL.EscapedPath(),
Name: "limit",
Value: strconv.Itoa(response.Limit),
MaxAge: int((time.Hour * 24 * 365).Seconds()),
Secure: r.TLS != nil,
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
}
}
}
switch head {
case "pages":
response.UploadableExts = []string{".html"}
case "posts":
response.UploadableExts = []string{".md"}
default:
response.UploadableExts = make([]string, 0, len(editableExts)+len(imgExts)+len(videoExts)+len(fontExts))
response.UploadableExts = append(response.UploadableExts, editableExts...)
if !user.UserFlags["NoUploadImage"] {
response.UploadableExts = append(response.UploadableExts, imgExts...)
}
if !user.UserFlags["NoUploadVideo"] {
response.UploadableExts = append(response.UploadableExts, videoExts...)
}
response.UploadableExts = append(response.UploadableExts, fontExts...)
}
databaseFS, ok := &DatabaseFS{}, false
switch v := nbrew.FS.(type) {
case interface{ As(any) bool }:
ok = v.As(&databaseFS)
}
if !ok {
dirEntries, err := nbrew.FS.WithContext(r.Context()).ReadDir(path.Join(sitePrefix, filePath))
if err != nil {
nbrew.GetLogger(r.Context()).Error(err.Error())
nbrew.InternalServerError(w, r, err)
return
}
response.Files = make([]File, 0, len(dirEntries))
for _, dirEntry := range dirEntries {
fileInfo, err := dirEntry.Info()
if err != nil {
nbrew.GetLogger(r.Context()).Error(err.Error())
nbrew.InternalServerError(w, r, err)
return
}
name := fileInfo.Name()
var absolutePath string
switch v := nbrew.FS.(type) {
case interface{ As(any) bool }:
var directoryFS *DirectoryFS
if v.As(&directoryFS) {
absolutePath = path.Join(directoryFS.RootDir, sitePrefix, filePath, name)
}
}
file := File{
Parent: filePath,
Name: name,
IsDir: fileInfo.IsDir(),
Size: fileInfo.Size(),
ModTime: fileInfo.ModTime(),
CreationTime: CreationTime(absolutePath, fileInfo),
}
if file.IsDir {
response.Files = append(response.Files, file)
continue
}
_, ok := AllowedFileTypes[strings.ToLower(path.Ext(file.Name))]
if !ok {
continue
}
response.Files = append(response.Files, file)
}
switch response.Sort {
case "name":
if response.Order == "desc" {
slices.Reverse(response.Files)
}
case "edited":
slices.SortFunc(response.Files, func(a, b File) int {
if a.ModTime.Equal(b.ModTime) {
return strings.Compare(a.Name, b.Name)
}
if a.ModTime.Before(b.ModTime) {
if response.Order == "asc" {
return -1
} else {
return 1
}
} else {
if response.Order == "asc" {
return 1
} else {
return -1
}
}
})
case "created":
slices.SortFunc(response.Files, func(a, b File) int {
if a.CreationTime.Equal(b.CreationTime) {
return strings.Compare(a.Name, b.Name)
}
if a.CreationTime.Before(b.CreationTime) {
if response.Order == "asc" {
return -1
} else {
return 1
}
} else {
if response.Order == "asc" {
return 1
} else {
return -1
}
}
})
case "size":
slices.SortFunc(response.Files, func(a, b File) int {
if a.CreationTime.Equal(b.CreationTime) {
return strings.Compare(a.Name, b.Name)
}
if a.CreationTime.Before(b.CreationTime) {
if response.Order == "asc" {
return -1
} else {
return 1
}
} else {
if response.Order == "asc" {
return 1
} else {
return -1
}
}
})
}
writeResponse(w, r, response)
return
}
var fromEdited, beforeEdited, fromCreated, beforeCreated time.Time
var fromSize, beforeSize int64
response.From = r.Form.Get("from")
response.Before = r.Form.Get("before")
_, _ = fromSize, beforeSize
if s := r.Form.Get("fromEdited"); s != "" {
if len(s) == len(dateFormat) {
fromEdited, err = time.ParseInLocation(dateFormat, s, time.FixedZone("", user.TimezoneOffsetSeconds))
if err == nil {
response.FromEdited = fromEdited.Format(dateFormat)
}
} else if strings.HasSuffix(s, "Z") {
fromEdited, err = time.ParseInLocation(zuluTimeFormat, s, time.UTC)
if err == nil {
response.FromEdited = fromEdited.Format(zuluTimeFormat)
}
} else {
fromEdited, err = time.ParseInLocation(timeFormat, s, time.UTC)
if err == nil {
response.FromEdited = fromEdited.Format(timeFormat)
}
}
}
if s := r.Form.Get("beforeEdited"); s != "" {
if len(s) == len(dateFormat) {
beforeEdited, err = time.ParseInLocation(dateFormat, s, time.FixedZone("", user.TimezoneOffsetSeconds))
if err == nil {
response.BeforeEdited = beforeEdited.Format(dateFormat)
}
} else if strings.HasSuffix(s, "Z") {
beforeEdited, err = time.ParseInLocation(zuluTimeFormat, s, time.UTC)
if err == nil {
response.BeforeEdited = beforeEdited.Format(zuluTimeFormat)
}
} else {
beforeEdited, err = time.ParseInLocation(timeFormat, s, time.UTC)
if err == nil {
response.BeforeEdited = beforeEdited.Format(timeFormat)
}
}
}
if s := r.Form.Get("fromCreated"); s != "" {
if len(s) == len(dateFormat) {
fromCreated, err = time.ParseInLocation(dateFormat, s, time.FixedZone("", user.TimezoneOffsetSeconds))
if err == nil {
response.FromCreated = fromCreated.Format(dateFormat)
}
} else if strings.HasSuffix(s, "Z") {
fromCreated, err = time.ParseInLocation(zuluTimeFormat, s, time.UTC)
if err == nil {
response.FromCreated = fromCreated.Format(zuluTimeFormat)
}
} else {
fromCreated, err = time.ParseInLocation(timeFormat, s, time.UTC)
if err == nil {
response.FromCreated = fromCreated.Format(timeFormat)
}
}
}
if s := r.Form.Get("beforeCreated"); s != "" {
if len(s) == len(dateFormat) {
beforeCreated, err = time.ParseInLocation(dateFormat, s, time.FixedZone("", user.TimezoneOffsetSeconds))
if err == nil {
response.BeforeCreated = beforeCreated.Format(dateFormat)
}
} else if strings.HasSuffix(s, "Z") {
beforeCreated, err = time.ParseInLocation(zuluTimeFormat, s, time.UTC)
if err == nil {
response.BeforeCreated = beforeCreated.Format(zuluTimeFormat)
}
} else {
beforeCreated, err = time.ParseInLocation(timeFormat, s, time.UTC)
if err == nil {
response.BeforeCreated = beforeCreated.Format(timeFormat)
}
}
}
if s := r.Form.Get("fromSize"); s != "" {
fromSize, err = strconv.ParseInt(s, 10, 64)
if err == nil {
response.FromSize = strconv.FormatInt(fromSize, 10)
}
}
if s := r.Form.Get("beforeSize"); s != "" {
beforeSize, err = strconv.ParseInt(s, 10, 64)
if err == nil {
response.BeforeSize = strconv.FormatInt(beforeSize, 10)
}
}
scheme := "https"
if r.TLS == nil {
scheme = "http"
}
// waitFiles unblocks when it is safe to read from response.Files.
//
// This is only used within an errgroup goroutine -- once all errgroup
// goroutines have completed, it is always safe to read from response.Files.
waitFiles := make(chan struct{})
group, groupctx := errgroup.WithContext(r.Context())
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
pinnedFiles, err := sq.FetchAll(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT {*}" +
" FROM pinned_file" +
" JOIN files ON files.file_id = pinned_file.file_id" +
" WHERE pinned_file.parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" ORDER BY files.file_path",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
},
}, func(row *sq.Row) File {
filePath := row.String("files.file_path")
return File{
FileID: row.UUID("files.file_id"),
Parent: strings.Trim(strings.TrimPrefix(path.Dir(filePath), sitePrefix), "/"),
Name: path.Base(filePath),
Size: row.Int64("files.size"),
ModTime: row.Time("files.mod_time"),
CreationTime: row.Time("files.creation_time"),
IsDir: row.Bool("files.is_dir"),
}
})
if err != nil {
return stacktrace.New(err)
}
response.PinnedFiles = pinnedFiles
return nil
})
switch response.Sort {
case "name":
if response.From != "" && response.Before != "" {
//-------------------------------//
// Read everything between names //
//-------------------------------//
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
defer close(waitFiles)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path >= {from} AND file_path < {before}",
sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)),
sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)),
)
order = sq.Expr("file_path ASC")
} else {
condition = sq.Expr("file_path > {before} AND file_path <= {from}",
sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)),
sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)),
)
order = sq.Expr("file_path DESC")
}
files, err := sq.FetchAll(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT {*}" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
},
}, func(row *sq.Row) File {
filePath := row.String("files.file_path")
return File{
FileID: row.UUID("files.file_id"),
Parent: strings.Trim(strings.TrimPrefix(path.Dir(filePath), sitePrefix), "/"),
Name: path.Base(filePath),
Size: row.Int64("files.size"),
ModTime: row.Time("files.mod_time"),
CreationTime: row.Time("files.creation_time"),
IsDir: row.Bool("files.is_dir"),
}
})
if err != nil {
return stacktrace.New(err)
}
response.Files = files
return nil
})
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path < {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path DESC")
} else {
condition = sq.Expr("file_path > {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path ASC")
}
hasPreviousFile, err := sq.FetchExists(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT 1" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
},
})
if err != nil {
return stacktrace.New(err)
}
if hasPreviousFile {
<-waitFiles
if len(response.Files) > 0 {
firstFile := response.Files[0]
uri := &url.URL{
Scheme: scheme,
Host: r.Host,
Path: r.URL.Path,
RawQuery: "sort=" + url.QueryEscape(response.Sort) +
"&order=" + url.QueryEscape(response.Order) +
"&limit=" + strconv.Itoa(response.Limit) +
"&before=" + url.QueryEscape(firstFile.Name) +
"&beforeEdited=" + url.QueryEscape(firstFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&beforeCreated=" + url.QueryEscape(firstFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&beforeSize=" + strconv.FormatInt(firstFile.Size, 10),
}
response.PreviousURL = uri.String()
}
}
return nil
})
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path >= {before}", sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)))
order = sq.Expr("file_path ASC")
} else {
condition = sq.Expr("file_path <= {before}", sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)))
order = sq.Expr("file_path DESC")
}
nextFile, err := sq.FetchOne(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT {*}" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}" +
" LIMIT 1",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
},
}, func(row *sq.Row) File {
return File{
Name: path.Base(row.String("file_path")),
ModTime: row.Time("mod_time"),
CreationTime: row.Time("creation_time"),
Size: row.Int64("size"),
}
})
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
return nil
}
return stacktrace.New(err)
}
uri := &url.URL{
Scheme: scheme,
Host: r.Host,
Path: r.URL.Path,
RawQuery: "sort=" + url.QueryEscape(response.Sort) +
"&order=" + url.QueryEscape(response.Order) +
"&limit=" + strconv.Itoa(response.Limit) +
"&from=" + url.QueryEscape(nextFile.Name) +
"&fromEdited=" + url.QueryEscape(nextFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&fromCreated=" + url.QueryEscape(nextFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&fromSize=" + strconv.FormatInt(nextFile.Size, 10),
}
response.NextURL = uri.String()
return nil
})
} else if response.From != "" {
//----------------------------//
// Read everything after name //
//----------------------------//
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
defer close(waitFiles)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path >= {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path ASC")
} else {
condition = sq.Expr("file_path <= {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path DESC")
}
files, err := sq.FetchAll(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT {*}" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}" +
" LIMIT {limit} + 1",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
sq.IntParam("limit", response.Limit),
},
}, func(row *sq.Row) File {
filePath := row.String("files.file_path")
return File{
FileID: row.UUID("files.file_id"),
Parent: strings.Trim(strings.TrimPrefix(path.Dir(filePath), sitePrefix), "/"),
Name: path.Base(filePath),
Size: row.Int64("files.size"),
ModTime: row.Time("files.mod_time"),
CreationTime: row.Time("files.creation_time"),
IsDir: row.Bool("files.is_dir"),
}
})
if err != nil {
return stacktrace.New(err)
}
response.Files = files
if len(response.Files) > response.Limit {
nextFile := response.Files[response.Limit]
response.Files = response.Files[:response.Limit]
uri := &url.URL{
Scheme: scheme,
Host: r.Host,
Path: r.URL.Path,
RawQuery: "sort=" + url.QueryEscape(response.Sort) +
"&order=" + url.QueryEscape(response.Order) +
"&limit=" + strconv.Itoa(response.Limit) +
"&from=" + url.QueryEscape(nextFile.Name) +
"&fromEdited=" + url.QueryEscape(nextFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&fromCreated=" + url.QueryEscape(nextFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&fromSize=" + strconv.FormatInt(nextFile.Size, 10),
}
response.NextURL = uri.String()
}
return nil
})
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path < {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path DESC")
} else {
condition = sq.Expr("file_path > {from}", sq.StringParam("from", path.Join(sitePrefix, filePath, response.From)))
order = sq.Expr("file_path ASC")
}
hasPreviousFile, err := sq.FetchExists(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT 1" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
},
})
if err != nil {
return stacktrace.New(err)
}
if hasPreviousFile {
<-waitFiles
if len(response.Files) > 0 {
firstFile := response.Files[0]
uri := &url.URL{
Scheme: scheme,
Host: r.Host,
Path: r.URL.Path,
RawQuery: "sort=" + url.QueryEscape(response.Sort) +
"&order=" + url.QueryEscape(response.Order) +
"&limit=" + strconv.Itoa(response.Limit) +
"&before=" + url.QueryEscape(firstFile.Name) +
"&beforeEdited=" + url.QueryEscape(firstFile.ModTime.UTC().Format(zuluTimeFormat)) +
"&beforeCreated=" + url.QueryEscape(firstFile.CreationTime.UTC().Format(zuluTimeFormat)) +
"&beforeSize=" + strconv.FormatInt(firstFile.Size, 10),
}
response.PreviousURL = uri.String()
}
}
return nil
})
} else if response.Before != "" {
//-----------------------------//
// Read everything before name //
//-----------------------------//
group.Go(func() (err error) {
defer stacktrace.RecoverPanic(&err)
defer close(waitFiles)
var condition, order sq.Expression
if response.Order == "asc" {
condition = sq.Expr("file_path < {before}", sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)))
order = sq.Expr("file_path DESC")
} else {
condition = sq.Expr("file_path > {before}", sq.StringParam("before", path.Join(sitePrefix, filePath, response.Before)))
order = sq.Expr("file_path ASC")
}
files, err := sq.FetchAll(groupctx, databaseFS.DB, sq.Query{
Dialect: databaseFS.Dialect,
Format: "SELECT {*}" +
" FROM files" +
" WHERE parent_id = (SELECT file_id FROM files WHERE file_path = {parent})" +
" AND {condition}" +
" ORDER BY {order}" +
" LIMIT {limit} + 1",
Values: []any{
sq.StringParam("parent", path.Join(sitePrefix, filePath)),
sq.Param("condition", condition),
sq.Param("order", order),
sq.IntParam("limit", response.Limit),
},
}, func(row *sq.Row) File {
filePath := row.String("files.file_path")
return File{
FileID: row.UUID("files.file_id"),
Parent: strings.Trim(strings.TrimPrefix(path.Dir(filePath), sitePrefix), "/"),
Name: path.Base(filePath),
Size: row.Int64("files.size"),
ModTime: row.Time("files.mod_time"),
CreationTime: row.Time("files.creation_time"),
IsDir: row.Bool("files.is_dir"),
}
})
if err != nil {
return stacktrace.New(err)
}
response.Files = files
if len(response.Files) > response.Limit {
response.Files = response.Files[:response.Limit]
slices.Reverse(response.Files)
firstFile := response.Files[0]
uri := &url.URL{
Scheme: scheme,
Host: r.Host,
Path: r.URL.Path,
RawQuery: "sort=" + url.QueryEscape(response.Sort) +