initial commit

fluxer_marketing/scripts/cmd/preprocess-images/main.go

@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"image"
+	"image/png"
+	"os"
+	"path/filepath"
+
+	"github.com/chai2010/webp"
+	"github.com/disintegration/imaging"
+	"github.com/gen2brain/avif"
+)
+
+type imageConfig struct {
+	input string
+	name  string
+	sizes []int
+}
+
+var defaultSizes = map[string][]int{
+	"desktop": {480, 768, 1024, 1920, 2560},
+	"mobile":  {480, 768},
+}
+
+func main() {
+	desktop := flag.String("desktop", "", "Path to desktop screenshot (required)")
+	mobile := flag.String("mobile", "", "Path to mobile screenshot (required)")
+	outputDir := flag.String("output", "priv/static/screenshots", "Output directory")
+	flag.Parse()
+
+	if *desktop == "" || *mobile == "" {
+		fmt.Fprintln(os.Stderr, "Usage: preprocess-images -desktop <path> -mobile <path> [-output <dir>]")
+		flag.PrintDefaults()
+		os.Exit(1)
+	}
+
+	if err := os.MkdirAll(*outputDir, 0755); err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to create output directory: %v\n", err)
+		os.Exit(1)
+	}
+
+	images := []imageConfig{
+		{input: *desktop, name: "desktop", sizes: defaultSizes["desktop"]},
+		{input: *mobile, name: "mobile", sizes: defaultSizes["mobile"]},
+	}
+
+	fmt.Println("Starting image preprocessing...")
+	fmt.Printf("Output directory: %s\n\n", *outputDir)
+
+	totalFiles := 0
+	for _, img := range images {
+		if _, err := os.Stat(img.input); os.IsNotExist(err) {
+			fmt.Fprintf(os.Stderr, "Input file not found: %s\n", img.input)
+			continue
+		}
+
+		fmt.Printf("Processing %s...\n", img.name)
+
+		src, err := imaging.Open(img.input)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to open %s: %v\n", img.input, err)
+			continue
+		}
+
+		bounds := src.Bounds()
+		fmt.Printf("  Original size: %dx%d\n\n", bounds.Dx(), bounds.Dy())
+
+		for _, width := range img.sizes {
+			if err := processImage(src, img.name, width, *outputDir); err != nil {
+				fmt.Fprintf(os.Stderr, "Error processing %s at %d: %v\n", img.name, width, err)
+			} else {
+				totalFiles += 3 // avif, webp, png
+			}
+		}
+		fmt.Println()
+	}
+
+	fmt.Println("Image preprocessing complete!")
+	fmt.Printf("Generated %d image files\n", totalFiles)
+}
+
+func processImage(src image.Image, name string, width int, outputDir string) error {
+	fmt.Printf("Processing %s at %dpx width...\n", name, width)
+
+	// Resize maintaining aspect ratio
+	resized := imaging.Resize(src, width, 0, imaging.Lanczos)
+
+	// AVIF
+	if err := saveAVIF(resized, filepath.Join(outputDir, fmt.Sprintf("%s-%dw.avif", name, width))); err != nil {
+		fmt.Printf("  Failed to generate avif: %v\n", err)
+	} else {
+		printFileSize(filepath.Join(outputDir, fmt.Sprintf("%s-%dw.avif", name, width)))
+	}
+
+	// WebP
+	if err := saveWebP(resized, filepath.Join(outputDir, fmt.Sprintf("%s-%dw.webp", name, width))); err != nil {
+		fmt.Printf("  Failed to generate webp: %v\n", err)
+	} else {
+		printFileSize(filepath.Join(outputDir, fmt.Sprintf("%s-%dw.webp", name, width)))
+	}
+
+	// PNG
+	if err := savePNG(resized, filepath.Join(outputDir, fmt.Sprintf("%s-%dw.png", name, width))); err != nil {
+		fmt.Printf("  Failed to generate png: %v\n", err)
+	} else {
+		printFileSize(filepath.Join(outputDir, fmt.Sprintf("%s-%dw.png", name, width)))
+	}
+
+	return nil
+}
+
+func saveAVIF(img image.Image, path string) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	return avif.Encode(f, img, avif.Options{Quality: 80, Speed: 6})
+}
+
+func saveWebP(img image.Image, path string) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	return webp.Encode(f, img, &webp.Options{Quality: 85})
+}
+
+func savePNG(img image.Image, path string) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	encoder := png.Encoder{CompressionLevel: png.BestCompression}
+	return encoder.Encode(f, img)
+}
+
+func printFileSize(path string) {
+	info, err := os.Stat(path)
+	if err != nil {
+		return
+	}
+	sizeKB := float64(info.Size()) / 1024
+	fmt.Printf("  OK %s (%.2f KB)\n", filepath.Base(path), sizeKB)
+}