first commit
This commit is contained in:
Beyhan Oğur
190
services/image_service.go
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190
services/image_service.go
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package services
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import (
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configs "ares/config"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/gofiber/fiber/v3"
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"github.com/h2non/bimg"
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"go.uber.org/zap"
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)
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// ImageOptions defines the parameters for image processing
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type ImageOptions struct {
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Width int
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Height int
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Quality int
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Format string // "avif", "webp", "png", "jpg"
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Folder string // e.g. "settings", "heroes"
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}
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// ProcessAndSaveImage handles the file upload, processing, and saving
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func ProcessAndSaveImage(c fiber.Ctx, fieldName string, opts ImageOptions) (string, error) {
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// 1. Get file from form
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file, err := c.FormFile(fieldName)
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if err != nil {
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// If no file uploaded, return empty string (not an error)
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configs.Logger.Debug("no file uploaded", zap.Error(err), zap.String("field", fieldName))
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return "", nil
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}
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// 2. Open file
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f, err := file.Open()
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if err != nil {
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configs.Logger.Error("failed to open uploaded file", zap.Error(err), zap.String("filename", file.Filename), zap.String("field", fieldName))
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return "", err
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}
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defer f.Close()
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// Read bytes
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buffer := make([]byte, file.Size)
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n, err := f.Read(buffer)
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if err != nil {
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configs.Logger.Error("failed to read uploaded file bytes", zap.Error(err), zap.String("filename", file.Filename), zap.Int64("size_expected", file.Size))
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return "", err
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}
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configs.Logger.Debug("read uploaded file bytes", zap.String("filename", file.Filename), zap.Int("read_bytes", n), zap.Int64("size_expected", file.Size))
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// 3. Process with bimg
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options := bimg.Options{
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Width: opts.Width,
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Height: opts.Height,
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Quality: opts.Quality,
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}
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// If both Width and Height are set, use Smart Crop (Cover)
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if opts.Width > 0 && opts.Height > 0 {
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options.Crop = true
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options.Gravity = bimg.GravitySmart
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}
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// Allow enlarging smaller images to requested dimensions and strip metadata
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options.Enlarge = true
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options.StripMetadata = true
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newImage, err := bimg.NewImage(buffer).Process(options)
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if err != nil {
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configs.Logger.Error("image processing failed", zap.Error(err), zap.Any("options", options))
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return "", fmt.Errorf("resim işleme hatası: %v", err)
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}
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// 4. Convert Format (if requested)
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// Default to AVIF if not specified
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targetFormat := bimg.AVIF
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ext := ".avif"
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if opts.Format != "" {
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switch strings.ToLower(opts.Format) {
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case "webp":
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targetFormat = bimg.WEBP
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ext = ".webp"
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case "png":
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targetFormat = bimg.PNG
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ext = ".png"
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case "jpg", "jpeg":
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targetFormat = bimg.JPEG
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ext = ".jpg"
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case "avif":
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targetFormat = bimg.AVIF
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ext = ".avif"
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}
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}
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if newImage, err = bimg.NewImage(newImage).Convert(targetFormat); err != nil {
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configs.Logger.Error("format conversion failed", zap.Error(err), zap.String("target_format", strings.ToLower(opts.Format)), zap.String("ext", ext))
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return "", fmt.Errorf("format dönüştürme hatası: %v", err)
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}
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// 5. Generate Filename and Path
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filename := fmt.Sprintf("%d%s", time.Now().UnixNano(), ext)
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// Ensure uploads directory exists
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// We save to ./uploads/{folder} (root uploads, served by main.go handler)
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uploadPath := filepath.Join("uploads", opts.Folder)
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if err := os.MkdirAll(uploadPath, 0755); err != nil {
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configs.Logger.Error("failed to create upload directory", zap.Error(err), zap.String("upload_path", uploadPath))
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return "", fmt.Errorf("dizin oluşturma hatası: %v", err)
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}
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fullPath := filepath.Join(uploadPath, filename)
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// 6. Save File using bimg
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if err := bimg.Write(fullPath, newImage); err != nil {
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configs.Logger.Error("failed to write image to disk", zap.Error(err), zap.String("full_path", fullPath))
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return "", fmt.Errorf("dosya kaydetme hatası: %v", err)
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}
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configs.Logger.Info("image saved", zap.String("path", fullPath), zap.String("url", fmt.Sprintf("/uploads/%s/%s", opts.Folder, filename)), zap.Int("width", opts.Width), zap.Int("height", opts.Height), zap.String("format", opts.Format), zap.Int("quality", opts.Quality))
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// Return relative path for DB (e.g. /uploads/heroes/123.avif)
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return fmt.Sprintf("/uploads/%s/%s", opts.Folder, filename), nil
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}
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// ProcessAndSaveImageFromBytes processes raw image bytes and saves the file similar to ProcessAndSaveImage
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func ProcessAndSaveImageFromBytes(buffer []byte, opts ImageOptions) (string, error) {
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configs.Logger.Debug("ProcessAndSaveImageFromBytes called", zap.Int("input_bytes", len(buffer)), zap.Any("options", opts))
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// 1. Process with bimg
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options := bimg.Options{
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Width: opts.Width,
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Height: opts.Height,
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Quality: opts.Quality,
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}
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if opts.Width > 0 && opts.Height > 0 {
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options.Crop = true
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options.Gravity = bimg.GravitySmart
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}
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options.Enlarge = true
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options.StripMetadata = true
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newImage, err := bimg.NewImage(buffer).Process(options)
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if err != nil {
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configs.Logger.Error("image processing from bytes failed", zap.Error(err), zap.Any("options", options))
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return "", fmt.Errorf("resim işleme hatası: %v", err)
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}
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// Convert format
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targetFormat := bimg.AVIF
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ext := ".avif"
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if opts.Format != "" {
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switch strings.ToLower(opts.Format) {
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case "webp":
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targetFormat = bimg.WEBP
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ext = ".webp"
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case "png":
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targetFormat = bimg.PNG
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ext = ".png"
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case "jpg", "jpeg":
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targetFormat = bimg.JPEG
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ext = ".jpg"
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case "avif":
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targetFormat = bimg.AVIF
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ext = ".avif"
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}
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}
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if newImage, err = bimg.NewImage(newImage).Convert(targetFormat); err != nil {
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configs.Logger.Error("format conversion from bytes failed", zap.Error(err), zap.String("target_format", strings.ToLower(opts.Format)), zap.String("ext", ext))
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return "", fmt.Errorf("format dönüştürme hatası: %v", err)
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}
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filename := fmt.Sprintf("%d%s", time.Now().UnixNano(), ext)
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uploadPath := filepath.Join("uploads", opts.Folder)
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if err := os.MkdirAll(uploadPath, 0755); err != nil {
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configs.Logger.Error("failed to create upload directory (from bytes)", zap.Error(err), zap.String("upload_path", uploadPath))
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return "", fmt.Errorf("dizin oluşturma hatası: %v", err)
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}
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fullPath := filepath.Join(uploadPath, filename)
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if err := bimg.Write(fullPath, newImage); err != nil {
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configs.Logger.Error("failed to write image to disk (from bytes)", zap.Error(err), zap.String("full_path", fullPath))
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return "", fmt.Errorf("dosya kaydetme hatası: %v", err)
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}
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configs.Logger.Info("image saved from bytes", zap.String("path", fullPath), zap.String("url", fmt.Sprintf("/uploads/%s/%s", opts.Folder, filename)), zap.Int("width", opts.Width), zap.Int("height", opts.Height), zap.String("format", opts.Format), zap.Int("quality", opts.Quality))
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return fmt.Sprintf("/uploads/%s/%s", opts.Folder, filename), nil
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}
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