feat: page content

internal/components/images/controller.go

@@ -24,7 +24,7 @@ var ErrNotAnImage = errors.New("not an image")
 func (s *Service) getMime(path string) (mimeType string, err error) {
 	info, err := s.fs.Stat(path)
 	if err != nil {
-		err = fmt.Errorf("image file info could not be fetched")
+		err = fmt.Errorf("image file info could not be fetched: %w", err)
 	}
 
 	if mimer, ok := info.(interface{ ContentType() string }); ok {

internal/components/images/helpers.go

@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"compress/flate"
 	"encoding/base64"
+	"fmt"
 	"io"
+	"strings"
 )
 
 func UIDFromPath(path string) (uid string, err error) {
@@ -24,6 +26,12 @@ func UIDFromPath(path string) (uid string, err error) {
 	return base64.RawURLEncoding.EncodeToString(b.Bytes()), nil
 }
 
+func URLFromPath(path string) (url string, err error) {
+	uid, err := UIDFromPath(path)
+	url = "/images/" + uid
+	return
+}
+
 func PathFromUID(uid string) (string, error) {
 	// 1. Decode the Base64 string back to compressed bytes
 	compressedBytes, err := base64.RawURLEncoding.DecodeString(uid)
@@ -45,3 +53,16 @@ func PathFromUID(uid string) (string, error) {
 
 	return out.String(), nil
 }
+
+func SourceSet(src string) string {
+	sb := strings.Builder{}
+
+	for i := range 19 {
+		sb.WriteString(fmt.Sprintf("%s?w=%d %dw, ", src, 100*(i+1), 100*(i+1)))
+	}
+
+	i := 20
+	sb.WriteString(fmt.Sprintf("%s?w=%d %dw", src, 100*(i+1), 100*(i+1)))
+
+	return sb.String()
+}