home/internal/resource/delivery/http/resource_http.go

49 lines
1.0 KiB
Go

package http
import (
"bytes"
"context"
"fmt"
"io"
"io/fs"
"net/http"
"source.toby3d.me/toby3d/home/internal/domain"
"source.toby3d.me/toby3d/home/internal/resource"
)
type Handler struct {
contentDir fs.FS
resources resource.UseCase
}
func NewHandler(resources resource.UseCase, contentDir fs.FS) *Handler {
return &Handler{
contentDir: contentDir,
resources: resources,
}
}
func (h *Handler) Handle(ctx context.Context, path string) (http.Handler, error) {
res, err := h.resources.Do(ctx, path)
if err != nil {
return nil, err
}
file, err := h.contentDir.Open(res.File.Filename())
if err != nil {
return nil, fmt.Errorf("cannot open resource: %w", err)
}
defer file.Close()
resBytes, err := io.ReadAll(file)
if err != nil {
return nil, fmt.Errorf("cannot read resource: %w", err)
}
// TODO(toby3d): ugly workaround, refactor that.
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
http.ServeContent(w, r, res.Name(), domain.ResourceModTime(res), bytes.NewReader(resBytes))
}), nil
}