Oops

lib/img.go

@@ -0,0 +1,61 @@
+package lib
+
+import (
+	"bytes"
+	"image"
+	"image/png"
+	"io"
+	"net/http"
+	"strconv"
+
+	"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()
+
+	// Read file content
+	fileContent, err := io.ReadAll(file)
+	if err != nil {
+		return c.String(http.StatusBadRequest, "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")
+	}
+
+	// Resize the image
+	resizedImg := transform.Resize(img, width, height, transform.Linear)
+
+	// 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 the resized image as response
+	return c.Blob(http.StatusOK, "image/png", buf.Bytes())
+}