147 lines
3.3 KiB
Go
147 lines
3.3 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"counter/internal/domain/entities"
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"counter/internal/domain/repositories"
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)
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// UserRepository implements the UserRepository interface for PostgreSQL
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type UserRepository struct {
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db *sql.DB
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}
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// NewUserRepository creates a new user repository
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func NewUserRepository(db *sql.DB) repositories.UserRepository {
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return &UserRepository{db: db}
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}
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// Create creates a new user
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func (r *UserRepository) Create(ctx context.Context, user *entities.User) error {
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query := `
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INSERT INTO users (username, email, password)
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VALUES ($1, $2, $3)
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RETURNING id, created_at, updated_at
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`
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err := r.db.QueryRowContext(ctx, query, user.Username, user.Email, user.Password).
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Scan(&user.ID, &user.CreatedAt, &user.UpdatedAt)
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if 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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// FindByID finds a user by ID
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func (r *UserRepository) FindByID(ctx context.Context, id int) (*entities.User, error) {
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query := `
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SELECT id, username, email, password, created_at, updated_at
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FROM users
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WHERE id = $1
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`
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user := &entities.User{}
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err := r.db.QueryRowContext(ctx, query, id).
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Scan(&user.ID, &user.Username, &user.Email, &user.Password, &user.CreatedAt, &user.UpdatedAt)
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if err == sql.ErrNoRows {
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return nil, entities.ErrUserNotFound
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}
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if err != nil {
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return nil, err
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}
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return user, nil
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}
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// FindByUsername finds a user by username
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func (r *UserRepository) FindByUsername(ctx context.Context, username string) (*entities.User, error) {
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query := `
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SELECT id, username, email, password, created_at, updated_at
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FROM users
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WHERE username = $1
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`
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user := &entities.User{}
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err := r.db.QueryRowContext(ctx, query, username).
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Scan(&user.ID, &user.Username, &user.Email, &user.Password, &user.CreatedAt, &user.UpdatedAt)
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if err == sql.ErrNoRows {
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return nil, entities.ErrUserNotFound
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}
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if err != nil {
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return nil, err
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}
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return user, nil
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}
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// FindByEmail finds a user by email
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func (r *UserRepository) FindByEmail(ctx context.Context, email string) (*entities.User, error) {
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query := `
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SELECT id, username, email, password, created_at, updated_at
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FROM users
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WHERE email = $1
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`
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user := &entities.User{}
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err := r.db.QueryRowContext(ctx, query, email).
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Scan(&user.ID, &user.Username, &user.Email, &user.Password, &user.CreatedAt, &user.UpdatedAt)
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if err == sql.ErrNoRows {
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return nil, entities.ErrUserNotFound
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}
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if err != nil {
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return nil, err
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}
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return user, nil
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}
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// Update updates a user
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func (r *UserRepository) Update(ctx context.Context, user *entities.User) error {
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query := `
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UPDATE users
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SET username = $1, email = $2, password = $3, updated_at = CURRENT_TIMESTAMP
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WHERE id = $4
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RETURNING updated_at
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`
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err := r.db.QueryRowContext(ctx, query, user.Username, user.Email, user.Password, user.ID).
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Scan(&user.UpdatedAt)
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if err == sql.ErrNoRows {
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return entities.ErrUserNotFound
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}
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if 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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// Delete deletes a user
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func (r *UserRepository) Delete(ctx context.Context, id int) error {
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query := `DELETE FROM users WHERE id = $1`
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result, err := r.db.ExecContext(ctx, query, id)
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if err != nil {
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return err
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}
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rowsAffected, err := result.RowsAffected()
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if err != nil {
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return err
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}
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if rowsAffected == 0 {
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return entities.ErrUserNotFound
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}
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return nil
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}
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