Huxley
901a769ee7
- Add GORM dependencies for SQLite and PostgreSQL - Create domain models (User, Session, File) with common errors - Implement repository interfaces and database layer with migrations - Update WebApp to bootstrap with database and repositories - Add comprehensive unit tests for repository methods - Update config structure to support multiple database drivers - Extend AGENTS.md with debugging principles and dependency rules
119 lines
3.2 KiB
Go
119 lines
3.2 KiB
Go
package repository
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import (
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"context"
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"errors"
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"strings"
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"gorm.io/gorm"
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"github.com/dhao2001/mygo/internal/model"
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)
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// isDuplicateKeyError checks if the error indicates a unique constraint violation.
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func isDuplicateKeyError(err error) bool {
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return errors.Is(err, gorm.ErrDuplicatedKey) || strings.Contains(strings.ToLower(err.Error()), "unique constraint failed")
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}
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// UserRepository provides access to user records.
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type UserRepository interface {
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Create(ctx context.Context, user *model.User) error
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FindByID(ctx context.Context, id string) (*model.User, error)
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FindByEmail(ctx context.Context, email string) (*model.User, error)
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FindByUsername(ctx context.Context, username string) (*model.User, error)
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Update(ctx context.Context, user *model.User) error
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Delete(ctx context.Context, id string) error
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List(ctx context.Context, offset, limit int) ([]model.User, int64, error)
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}
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type userRepository struct {
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db *gorm.DB
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}
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// NewUserRepository creates a UserRepository backed by GORM.
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func NewUserRepository(db *gorm.DB) UserRepository {
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return &userRepository{db: db}
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}
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func (r *userRepository) Create(ctx context.Context, user *model.User) error {
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result := r.db.WithContext(ctx).Create(user)
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if result.Error != nil {
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if isDuplicateKeyError(result.Error) {
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return model.ErrDuplicate
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}
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return result.Error
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}
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return nil
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}
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func (r *userRepository) FindByID(ctx context.Context, id string) (*model.User, error) {
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var user model.User
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result := r.db.WithContext(ctx).First(&user, "id = ?", id)
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if errors.Is(result.Error, gorm.ErrRecordNotFound) {
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return nil, model.ErrNotFound
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}
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if result.Error != nil {
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return nil, result.Error
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}
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return &user, nil
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}
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func (r *userRepository) FindByEmail(ctx context.Context, email string) (*model.User, error) {
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var user model.User
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result := r.db.WithContext(ctx).First(&user, "email = ?", email)
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if errors.Is(result.Error, gorm.ErrRecordNotFound) {
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return nil, model.ErrNotFound
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}
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if result.Error != nil {
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return nil, result.Error
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}
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return &user, nil
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}
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func (r *userRepository) FindByUsername(ctx context.Context, username string) (*model.User, error) {
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var user model.User
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result := r.db.WithContext(ctx).First(&user, "username = ?", username)
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if errors.Is(result.Error, gorm.ErrRecordNotFound) {
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return nil, model.ErrNotFound
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}
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if result.Error != nil {
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return nil, result.Error
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}
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return &user, nil
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}
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func (r *userRepository) Update(ctx context.Context, user *model.User) error {
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result := r.db.WithContext(ctx).Save(user)
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if result.Error != nil {
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if isDuplicateKeyError(result.Error) {
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return model.ErrDuplicate
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}
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return result.Error
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}
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return nil
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}
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func (r *userRepository) Delete(ctx context.Context, id string) error {
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result := r.db.WithContext(ctx).Delete(&model.User{}, "id = ?", id)
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if result.Error != nil {
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return result.Error
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}
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return nil
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}
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func (r *userRepository) List(ctx context.Context, offset, limit int) ([]model.User, int64, error) {
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var users []model.User
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var total int64
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if err := r.db.WithContext(ctx).Model(&model.User{}).Count(&total).Error; err != nil {
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return nil, 0, err
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}
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result := r.db.WithContext(ctx).Offset(offset).Limit(limit).Find(&users)
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if result.Error != nil {
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return nil, 0, result.Error
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}
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return users, total, nil
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}
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