Error handing for dimensions, bolder font on saved image

aic_package/convert_image.go

@@ -40,7 +40,8 @@ import (
 	"github.com/asaskevich/govalidator"
 )
 
-// Return default configuration for flags
+// Return default configuration for flags.
+// Can be sent directly to ConvertImage() for default ascii art
 func DefaultFlags() map[string]interface{} {
 	return map[string]interface{}{
 		"complex":       false,
@@ -141,9 +142,8 @@ func ConvertImage(imagePath string, flags map[string]interface{}) (string, error
 		return "", fmt.Errorf("can't decode %v: %v", imagePath, err)
 	}
 
-	// x and y are height and width of resulting ascii art
-	// These numbers are important for creating png image to save
-	imgSet, x, y, err := imgManip.ConvertToAsciiPixels(imData, dimensions, flipX, flipY)
+	// Ascii art height and width are important for creating png image to save
+	imgSet, imgWidth, imgHeight, err := imgManip.ConvertToAsciiPixels(imData, dimensions, flipX, flipY)
 	if err != nil {
 		return "", fmt.Errorf("%v", err)
 	}
@@ -152,7 +152,7 @@ func ConvertImage(imagePath string, flags map[string]interface{}) (string, error
 
 	// Save ascii art as .png image before printing it, if --save-img flag is passed
 	if saveImagePath != "" {
-		if err := createImageToSave(asciiSet, x, y, colored, saveImagePath, imagePath, urlImgName); err != nil {
+		if err := createImageToSave(asciiSet, imgWidth, imgHeight, colored, saveImagePath, imagePath, urlImgName); err != nil {
 			return "", fmt.Errorf("can't save file: %v", err)
 		}
 	}

aic_package/create_ascii_image.go

@@ -17,11 +17,12 @@ limitations under the License.
 package aic_package
 
 import (
-	_ "embed"
 	"image"
 	"image/color"
 	"os"
 
+	_ "embed"
+
 	imgManip "github.com/TheZoraiz/ascii-image-converter/image_manipulation"
 	"github.com/golang/freetype/truetype"
 
@@ -32,7 +33,7 @@ import (
 // Will work on organizing it into a readable format soon. Apologies...
 
 // To embed font directly into the binary, instead of packaging it as a separate file
-//go:embed RobotoMono-Regular.ttf
+//go:embed RobotoMono-Bold.ttf
 var embeddedFontFile []byte
 
 func createImageToSave(asciiArt [][]imgManip.AsciiChar, x, y int, colored bool, saveImagePath, imagePath, urlImgName string) error {
@@ -72,9 +73,9 @@ func createImageToSave(asciiArt [][]imgManip.AsciiChar, x, y int, colored bool,
 	if err != nil {
 		return err
 	}
-	robotoFontFace := truetype.NewFace(tempFont, &truetype.Options{Size: 21.0})
+	robotoBoldFontFace := truetype.NewFace(tempFont, &truetype.Options{Size: 21.0})
 
-	dc.SetFontFace(robotoFontFace)
+	dc.SetFontFace(robotoBoldFontFace)
 
 	// Font color of text on picture is white by default
 	dc.SetColor(color.White)

cmd/root.go

@@ -44,7 +44,7 @@ var (
 	rootCmd = &cobra.Command{
 		Use:     "ascii-image-converter [image paths/urls]",
 		Short:   "Converts images into ascii art",
-		Version: "1.3.0",
+		Version: "1.3.1",
 		Long:    "This tool converts images into ascii art and prints them on the terminal.\nFurther configuration can be managed with flags.",
 
 		// Not RunE since help text is getting larger and seeing it for every error impacts user experience
@@ -71,6 +71,11 @@ var (
 				return
 			}
 
+			if dimensions != nil && (dimensions[0] < 1 || dimensions[1] < 1) {
+				fmt.Printf("Error: invalid values for dimensions\n\n")
+				return
+			}
+
 			flags := map[string]interface{}{
 				"complex":       complex,
 				"dimensions":    dimensions,

image_manipulation/ascii_conversions.go

@@ -139,6 +139,7 @@ func ConvertToAscii(imgSet [][]AsciiPixel, negative bool, colored bool, complex
 		}
 	} else {
 		chosenTable = map[int]string{}
+
 		for index, char := range customMap {
 			chosenTable[index] = string(char)
 		}