re-worked the endpoints and stylegen logic

lib/img.go

@@ -2,49 +2,27 @@ package lib
 
 import (
 	"bytes"
+	"errors"
 	"image"
 	"image/png"
 	"io"
-	"net/http"
-	"strconv"
+	"mime/multipart"
 
 	"github.com/anthonynsimon/bild/transform"
-	"github.com/labstack/echo/v4"
 )
 
-func ResizeImg(c echo.Context) error {
-	// Extract file from request
-	file, _, err := c.Request().FormFile("image")
-	if err != nil {
-		return c.String(http.StatusBadRequest, "Error getting image file")
-	}
-	defer file.Close()
-
+func ResizeImg(file multipart.File, width int, height int) ([]byte, error) {
 	// Read file content
 	fileContent, err := io.ReadAll(file)
 	if err != nil {
-		return c.String(http.StatusBadRequest, "Error reading image file")
+		return nil, errors.New("Error reading image file")
+
 	}
 
 	// Decode image
 	img, _, err := image.Decode(bytes.NewReader(fileContent))
 	if err != nil {
-		return c.String(http.StatusBadRequest, "Error decoding image")
-	}
-
-	// Get dimensions from form data parameters
-	widthStr := c.FormValue("width")
-	heightStr := c.FormValue("height")
-
-	// Validate and convert dimensions to integers
-	width, err := strconv.Atoi(widthStr)
-	if err != nil {
-		return c.String(http.StatusBadRequest, "Invalid width parameter")
-	}
-
-	height, err := strconv.Atoi(heightStr)
-	if err != nil {
-		return c.String(http.StatusBadRequest, "Invalid height parameter")
+		return nil, errors.New("Error decoding image")
 	}
 
 	// Resize the image
@@ -53,9 +31,9 @@ func ResizeImg(c echo.Context) error {
 	// Encode the resized image as PNG
 	buf := new(bytes.Buffer)
 	if err := png.Encode(buf, resizedImg); err != nil {
-		return c.String(http.StatusInternalServerError, "Error encoding image to PNG")
+		return nil, errors.New("Error encoding image to PNG")
 	}
 
 	// Return the resized image as response
-	return c.Blob(http.StatusOK, "image/png", buf.Bytes())
+	return buf.Bytes(), nil
 }