first commit
This commit is contained in:
Beyhan Oğur
12
pkg/utils/colors.go
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12
pkg/utils/colors.go
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package utils
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const (
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ColorReset = "\033[0m"
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ColorRed = "\033[31m"
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ColorGreen = "\033[32m"
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ColorYellow = "\033[33m"
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ColorBlue = "\033[34m"
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ColorPurple = "\033[35m"
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ColorCyan = "\033[36m"
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ColorWhite = "\033[37m"
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)
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19
pkg/utils/db_utils.go
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19
pkg/utils/db_utils.go
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package utils
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import (
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"errors"
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"strings"
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"github.com/jackc/pgx/v5/pgconn"
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)
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// IsDuplicateKeyError checks if the error is a PostgreSQL duplicate key violation
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func IsDuplicateKeyError(err error) bool {
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var pgErr *pgconn.PgError
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if errors.As(err, &pgErr) {
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// 23505 is the PostgreSQL error code for unique_violation
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return pgErr.Code == "23505"
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}
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// Fallback for other drivers or if error wrapping is different
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return strings.Contains(err.Error(), "duplicate key value violates unique constraint")
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}
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55
pkg/utils/email.go
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55
pkg/utils/email.go
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package utils
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import (
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"fmt"
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"gauth-central/config"
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"net/smtp"
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)
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func SendVerificationEmail(toEmail, token string) error {
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// Get config
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host := config.AppConfig.EmailHost
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port := config.AppConfig.EmailPort
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from := config.AppConfig.EmailFrom
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if from == "" {
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from = "noreply@gauth.local"
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}
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// Construct verification link
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// Assuming frontend handles verification at /verify-email?token=...
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// Or backend endpoint directly: /api/v1/auth/verify-email?token=...
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// Let's use APP_URL from config
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verifyLink := fmt.Sprintf("%s/v1/auth/verify-email?token=%s", config.AppConfig.AppURL, token)
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// Email content
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subject := "Subject: Verify your email address\n"
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mime := "MIME-version: 1.0;\nContent-Type: text/html; charset=\"UTF-8\";\n\n"
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body := fmt.Sprintf(`
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<html>
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<body>
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<h2>Welcome to GAuth-Central!</h2>
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<p>Please click the link below to verify your email address:</p>
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<p><a href="%s">Verify Email</a></p>
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<p>Or copy and paste this link: %s</p>
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</body>
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</html>
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`, verifyLink, verifyLink)
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msg := []byte(subject + mime + body)
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// Address
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addr := fmt.Sprintf("%s:%s", host, port)
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// Auth (if needed)
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var auth smtp.Auth
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if config.AppConfig.EmailHostUser != "" && config.AppConfig.EmailHostPassword != "" {
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auth = smtp.PlainAuth("", config.AppConfig.EmailHostUser, config.AppConfig.EmailHostPassword, host)
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}
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// Send email
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if err := smtp.SendMail(addr, auth, from, []string{toEmail}, msg); err != nil {
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return err
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}
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return nil
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}
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137
pkg/utils/image_processor.go
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137
pkg/utils/image_processor.go
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package utils
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import (
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"fmt"
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"image"
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"image/jpeg"
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"image/png"
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"mime/multipart"
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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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"gauth-central/config"
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"github.com/chai2010/webp"
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"github.com/disintegration/imaging"
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)
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type ImageOptions struct {
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Width int
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Height int
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Quality float32 // 1-100 (WebP uses float32)
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Format string // "webp", "jpg", "png"
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Mode string // "cover", "contain", "resize"
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}
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// SaveOptimizedImage processes and saves an image
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// Returns the relative path to the saved file (e.g., "/uploads/avatars/filename.webp")
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func SaveOptimizedImage(fileHeader *multipart.FileHeader, uploadDir string, userID string, opts *ImageOptions) (string, error) {
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// If opts is nil, use defaults from config
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if opts == nil {
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opts = &ImageOptions{
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Width: config.AppConfig.AvatarWidth,
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Height: config.AppConfig.AvatarHeight,
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Quality: float32(config.AppConfig.AvatarQuality),
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Format: config.AppConfig.AvatarFormat,
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Mode: config.AppConfig.AvatarMode,
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}
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}
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// Open the file
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srcFile, err := fileHeader.Open()
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if err != nil {
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return "", fmt.Errorf("failed to open file: %v", err)
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}
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defer srcFile.Close()
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// Decode image
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img, _, err := image.Decode(srcFile)
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if err != nil {
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return "", fmt.Errorf("failed to decode image: %v", err)
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}
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// Resize logic
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if opts.Width > 0 || opts.Height > 0 {
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switch strings.ToLower(opts.Mode) {
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case "cover":
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// Fill requires both dimensions to be effective for cropping.
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// If one is missing, we fall back to Resize which preserves aspect ratio.
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if opts.Width > 0 && opts.Height > 0 {
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img = imaging.Fill(img, opts.Width, opts.Height, imaging.Center, imaging.Lanczos)
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} else {
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img = imaging.Resize(img, opts.Width, opts.Height, imaging.Lanczos)
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}
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case "contain":
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// Fit fits the image within the box, preserving aspect ratio.
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// If one dimension is 0, Fit might behave like Resize(w, h) if implementation allows,
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// but imaging.Fit usually expects a box.
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// If one is 0, we assume the user wants to limit the other dimension.
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if opts.Width > 0 && opts.Height > 0 {
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img = imaging.Fit(img, opts.Width, opts.Height, imaging.Lanczos)
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} else {
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img = imaging.Resize(img, opts.Width, opts.Height, imaging.Lanczos)
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}
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default:
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// "resize" or empty: Resize preserves aspect ratio if one arg is 0.
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// If both are provided, it stretches unless we use Fill/Fit.
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// imaging.Resize stretches if both are non-zero.
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img = imaging.Resize(img, opts.Width, opts.Height, imaging.Lanczos)
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}
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}
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// Determine output format and filename
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ext := "." + strings.ToLower(opts.Format)
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if opts.Format == "" {
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ext = ".webp" // Default to WebP
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opts.Format = "webp"
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}
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// Generate filename
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filename := fmt.Sprintf("%s_%d%s", userID, time.Now().UnixNano(), ext)
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// Ensure directory exists
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if err := os.MkdirAll(uploadDir, 0755); err != nil {
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return "", fmt.Errorf("failed to create directory: %v", err)
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}
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fullPath := filepath.Join(uploadDir, filename)
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outFile, err := os.Create(fullPath)
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if err != nil {
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return "", fmt.Errorf("failed to create output file: %v", err)
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}
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defer outFile.Close()
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// Encode
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switch strings.ToLower(opts.Format) {
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case "jpg", "jpeg":
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quality := int(opts.Quality)
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if quality < 1 || quality > 100 {
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quality = 90
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}
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err = jpeg.Encode(outFile, img, &jpeg.Options{Quality: quality})
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case "png":
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err = png.Encode(outFile, img) // PNG is lossless
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case "webp", "":
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err = webp.Encode(outFile, img, &webp.Options{Lossless: false, Quality: opts.Quality})
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default:
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// Fallback to WebP
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err = webp.Encode(outFile, img, &webp.Options{Lossless: false, Quality: opts.Quality})
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}
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if err != nil {
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return "", fmt.Errorf("failed to encode image: %v", err)
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}
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// Return relative path
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relPath := filepath.Join(uploadDir, filename)
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if strings.HasPrefix(relPath, ".") {
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relPath = relPath[1:]
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}
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if !strings.HasPrefix(relPath, "/") {
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relPath = "/" + relPath
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}
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return relPath, nil
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}
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15
pkg/utils/password.go
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15
pkg/utils/password.go
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@@ -0,0 +1,15 @@
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package utils
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import (
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"golang.org/x/crypto/bcrypt"
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)
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func HashPassword(password string) (string, error) {
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bytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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return string(bytes), err
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}
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func CheckPasswordHash(password, hash string) bool {
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err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
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return err == nil
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}
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15
pkg/utils/token.go
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15
pkg/utils/token.go
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@@ -0,0 +1,15 @@
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package utils
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import (
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"crypto/rand"
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"encoding/hex"
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)
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// GenerateSecureToken returns a cryptographically random hex string (e.g. for email verification).
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func GenerateSecureToken(byteLength int) (string, error) {
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b := make([]byte, byteLength)
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if _, err := rand.Read(b); err != nil {
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return "", err
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}
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return hex.EncodeToString(b), nil
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}
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