chore: remove old auth.go

internal/auth/auth.go

@@ -1,141 +0,0 @@
-package auth
-
-import (
-	"context"
-	"crypto/rand"
-	"database/sql"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"net/http"
-	"time"
-
-	"github.com/google/uuid"
-	"golang.org/x/crypto/bcrypt"
-
-	"malago/internal/database"
-)
-
-var (
-	ErrInvalidCredentials = errors.New("invalid username or password")
-	ErrUserExists         = errors.New("username already exists")
-	ErrNotAuthenticated   = errors.New("not authenticated")
-)
-
-type Service struct {
-	db database.Querier
-}
-
-func NewService(db database.Querier) *Service {
-	return &Service{db: db}
-}
-
-// generateSessionToken generates a secure random 32-byte token.
-func generateSessionToken() (string, error) {
-	b := make([]byte, 32)
-	if _, err := rand.Read(b); err != nil {
-		return "", err
-	}
-	return base64.URLEncoding.EncodeToString(b), nil
-}
-
-func (s *Service) RegisterUser(ctx context.Context, username, password string) (*database.User, error) {
-	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
-	if err != nil {
-		return nil, fmt.Errorf("failed to hash password: %w", err)
-	}
-
-	id := uuid.New().String()
-	user, err := s.db.CreateUser(ctx, database.CreateUserParams{
-		ID:           id,
-		Username:     username,
-		PasswordHash: string(hash),
-	})
-	if err != nil {
-		// Assuming unique constraint failure for username
-		return nil, ErrUserExists
-	}
-
-	return &user, nil
-}
-
-func (s *Service) Login(ctx context.Context, username, password string) (*database.Session, error) {
-	user, err := s.db.GetUserByUsername(ctx, username)
-	if err != nil {
-		if errors.Is(err, sql.ErrNoRows) {
-			return nil, ErrInvalidCredentials
-		}
-		return nil, fmt.Errorf("failed to lookup user: %w", err)
-	}
-
-	if err := bcrypt.CompareHashAndPassword([]byte(user.PasswordHash), []byte(password)); err != nil {
-		return nil, ErrInvalidCredentials
-	}
-
-	token, err := generateSessionToken()
-	if err != nil {
-		return nil, fmt.Errorf("failed to generate session token: %w", err)
-	}
-
-	expiresAt := time.Now().Add(30 * 24 * time.Hour) // 30 days
-	session, err := s.db.CreateSession(ctx, database.CreateSessionParams{
-		ID:        token,
-		UserID:    user.ID,
-		ExpiresAt: expiresAt,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("failed to create session: %w", err)
-	}
-
-	return &session, nil
-}
-
-func (s *Service) Logout(ctx context.Context, sessionID string) error {
-	return s.db.DeleteSession(ctx, sessionID)
-}
-
-func (s *Service) ValidateSession(ctx context.Context, sessionID string) (*database.User, error) {
-	session, err := s.db.GetSession(ctx, sessionID)
-	if err != nil {
-		if errors.Is(err, sql.ErrNoRows) {
-			return nil, ErrNotAuthenticated
-		}
-		return nil, fmt.Errorf("failed to get session: %w", err)
-	}
-
-	if time.Now().After(session.ExpiresAt) {
-		_ = s.db.DeleteSession(ctx, sessionID)
-		return nil, ErrNotAuthenticated
-	}
-
-	user, err := s.db.GetUser(ctx, session.UserID)
-	if err != nil {
-		return nil, fmt.Errorf("failed to get user for session: %w", err)
-	}
-
-	return &user, nil
-}
-
-func SetSessionCookie(w http.ResponseWriter, sessionID string, expiresAt time.Time) {
-	http.SetCookie(w, &http.Cookie{
-		Name:     "session_id",
-		Value:    sessionID,
-		Expires:  expiresAt,
-		HttpOnly: true,
-		Secure:   false, // False for local development without TLS
-		SameSite: http.SameSiteLaxMode,
-		Path:     "/",
-	})
-}
-
-func ClearSessionCookie(w http.ResponseWriter) {
-	http.SetCookie(w, &http.Cookie{
-		Name:     "session_id",
-		Value:    "",
-		Expires:  time.Unix(0, 0),
-		HttpOnly: true,
-		Secure:   false, // False for local development without TLS
-		SameSite: http.SameSiteLaxMode,
-		Path:     "/",
-	})
-}