Initial commit

internal/heic_disabled.go

@@ -0,0 +1,67 @@
+//go:build !heic
+
+package internal
+
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"image"
+	"image/color"
+	"image/jpeg"
+	"log/slog"
+)
+
+// convertHEICtoJPEG returns a placeholder image when HEIC support is disabled
+// This version does not require the libheif library
+func convertHEICtoJPEG(heicData []byte) ([]byte, error) {
+	slog.Warn("HEIC conversion is disabled. Returning placeholder image. Build with -tags heic to enable HEIC support.")
+
+	// Return a simple placeholder JPEG image (400x300 gray rectangle with text)
+	// This is better than returning an error, as it allows the app to function
+	return generatePlaceholderJPEG()
+}
+
+// generatePlaceholderJPEG creates a simple gray placeholder image
+func generatePlaceholderJPEG() ([]byte, error) {
+	// Create a 400x300 image
+	width, height := 400, 300
+	img := image.NewRGBA(image.Rect(0, 0, width, height))
+
+	// Fill with gray background
+	gray := color.RGBA{200, 200, 200, 255}
+	for y := 0; y < height; y++ {
+		for x := 0; x < width; x++ {
+			img.Set(x, y, gray)
+		}
+	}
+
+	// Add a dark border
+	borderColor := color.RGBA{100, 100, 100, 255}
+	for x := 0; x < width; x++ {
+		img.Set(x, 0, borderColor)
+		img.Set(x, height-1, borderColor)
+	}
+	for y := 0; y < height; y++ {
+		img.Set(0, y, borderColor)
+		img.Set(width-1, y, borderColor)
+	}
+
+	// Encode as JPEG
+	var buf bytes.Buffer
+	err := jpeg.Encode(&buf, img, &jpeg.Options{Quality: 80})
+	if err != nil {
+		return nil, fmt.Errorf("failed to encode placeholder image: %w", err)
+	}
+
+	return buf.Bytes(), nil
+}
+
+// Alternative: Return a base64-encoded minimal JPEG (1x1 pixel)
+// This is more efficient but less user-friendly
+func generateMinimalPlaceholderJPEG() ([]byte, error) {
+	// 1x1 gray pixel JPEG (base64 encoded minimal JPEG)
+	minimalJPEG := "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAARCAABAAEDASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAv/xAAUEAEAAAAAAAAAAAAAAAAAAAAA/8QAFQEBAQAAAAAAAAAAAAAAAAAAAAX/xAAUEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwA/wA/h"
+	return base64.StdEncoding.DecodeString(minimalJPEG)
+}