137 lines
3.2 KiB
Go
137 lines
3.2 KiB
Go
package filemanager
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import (
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"encoding/json"
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"net/http"
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"strconv"
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"strings"
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)
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// serveListing presents the user with a listage of a directory folder.
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func serveListing(c *requestContext, w http.ResponseWriter, r *http.Request) (int, error) {
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var err error
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// Loads the content of the directory.
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listing, err := getListing(c.us, c.fi.VirtualPath, c.fm.RootURL()+r.URL.Path)
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if err != nil {
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return errorToHTTP(err, true), err
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}
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cookieScope := c.fm.RootURL()
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if cookieScope == "" {
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cookieScope = "/"
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}
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// Copy the query values into the Listing struct
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var limit int
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listing.Sort, listing.Order, limit, err = handleSortOrder(w, r, cookieScope)
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if err != nil {
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return http.StatusBadRequest, err
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}
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listing.ApplySort()
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if limit > 0 && limit <= len(listing.Items) {
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listing.Items = listing.Items[:limit]
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listing.ItemsLimitedTo = limit
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}
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if strings.Contains(r.Header.Get("Accept"), "application/json") {
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marsh, err := json.Marshal(listing.Items)
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if err != nil {
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return http.StatusInternalServerError, err
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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if _, err := w.Write(marsh); err != nil {
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return http.StatusInternalServerError, err
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}
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return http.StatusOK, nil
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}
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displayMode := r.URL.Query().Get("display")
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if displayMode == "" {
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if displayCookie, err := r.Cookie("display"); err == nil {
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displayMode = displayCookie.Value
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}
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}
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if displayMode == "" || (displayMode != "mosaic" && displayMode != "list") {
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displayMode = "mosaic"
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}
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http.SetCookie(w, &http.Cookie{
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Name: "display",
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Value: displayMode,
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Path: cookieScope,
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Secure: r.TLS != nil,
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})
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p := &page{
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minimal: r.Header.Get("Minimal") == "true",
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Name: listing.Name,
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Path: c.fi.VirtualPath,
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IsDir: true,
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User: c.us,
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PrefixURL: c.fm.prefixURL,
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BaseURL: c.fm.RootURL(),
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WebDavURL: c.fm.WebDavURL(),
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Display: displayMode,
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Data: listing,
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}
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return p.PrintAsHTML(w, c.fm.assets.templates, "listing")
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}
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// handleSortOrder gets and stores for a Listing the 'sort' and 'order',
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// and reads 'limit' if given. The latter is 0 if not given. Sets cookies.
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func handleSortOrder(w http.ResponseWriter, r *http.Request, scope string) (sort string, order string, limit int, err error) {
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sort = r.URL.Query().Get("sort")
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order = r.URL.Query().Get("order")
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limitQuery := r.URL.Query().Get("limit")
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// If the query 'sort' or 'order' is empty, use defaults or any values
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// previously saved in Cookies.
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switch sort {
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case "":
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sort = "name"
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if sortCookie, sortErr := r.Cookie("sort"); sortErr == nil {
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sort = sortCookie.Value
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}
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case "name", "size", "type":
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http.SetCookie(w, &http.Cookie{
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Name: "sort",
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Value: sort,
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Path: scope,
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Secure: r.TLS != nil,
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})
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}
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switch order {
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case "":
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order = "asc"
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if orderCookie, orderErr := r.Cookie("order"); orderErr == nil {
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order = orderCookie.Value
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}
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case "asc", "desc":
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http.SetCookie(w, &http.Cookie{
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Name: "order",
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Value: order,
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Path: scope,
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Secure: r.TLS != nil,
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})
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}
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if limitQuery != "" {
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limit, err = strconv.Atoi(limitQuery)
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// If the 'limit' query can't be interpreted as a number, return err.
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if err != nil {
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return
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}
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}
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return
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}
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