/
file_serve_transport.go
62 lines (52 loc) · 1.54 KB
/
file_serve_transport.go
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package http
import (
"fmt"
"net/http"
"net/url"
"strings"
"github.com/agreyfox/baas"
)
func (s *Server) handleServeFile() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
opts, err := s.parseTransformationOptions(r.URL)
if err != nil {
RespondError(w, err, http.StatusInternalServerError, GetReqID(r))
return
}
blob, err := s.FileServeService.Serve(r.Context(), r.URL, opts)
if err != nil {
RespondError(w, err, http.StatusInternalServerError, GetReqID(r))
return
}
defer blob.Close()
RespondServeFile(w, blob)
})
}
func (s *Server) parseTransformationOptions(u *url.URL) (baas.TransformationOption, error) {
extension := getFileExtension(u)
var queryParams serveFileQueryParam
if err := s.QueryDecoder.Decode(&queryParams, u.Query()); err != nil {
return baas.TransformationOption{}, fmt.Errorf("failed to decode query params %w", err)
}
opts := baas.TransformationOption{
Width: queryParams.Width,
Height: queryParams.Height,
Format: extension,
Quality: queryParams.Quality,
Crop: queryParams.Crop,
Flip: queryParams.Flip,
Compression: queryParams.Compression,
Rotate: queryParams.Rotate,
Zoom: queryParams.Zoom,
BW: queryParams.BW,
Flop: queryParams.Flop,
WM: queryParams.WM,
WMText: queryParams.WMText,
WMV: queryParams.WMV,
Origin: queryParams.Origin,
}
return opts, nil
}
func getFileExtension(u *url.URL) string {
return strings.Split(u.Path, ".")[1]
}