Implement SQLite persistence layer (TDD)

- Add SQLite and UUID dependencies (go-sqlite3, google/uuid) - Create database connection with automatic migrations - Implement UserRepository with full CRUD operations - Implement HabitRepository with JSON serialization for arrays - Implement HabitEntryRepository with date range queries - Add comprehensive test coverage for all repositories - Fix User entity to default timezone to UTC when empty - All tests passing with TDD approach (Red-Green-Refactor)
2025-11-25 14:29:51 +01:00
parent 64bfe80806
commit 0977d3a58b
14 changed files with 1530 additions and 1 deletions
@@ -0,0 +1,133 @@
+package sqlite
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"habit-tracker-api/internal/domain/entities"
+	"habit-tracker-api/internal/shared/errors"
+
+	"github.com/google/uuid"
+)
+
+type UserRepository struct {
+	db *sql.DB
+}
+
+func NewUserRepository(db *sql.DB) *UserRepository {
+	return &UserRepository{db: db}
+}
+
+func (r *UserRepository) Create(ctx context.Context, user *entities.User) error {
+	user.ID = uuid.New().String()
+
+	query := `
+		INSERT INTO users (id, email, password_hash, timezone, created_at, updated_at)
+		VALUES (?, ?, ?, ?, ?, ?)
+	`
+
+	_, err := r.db.ExecContext(ctx, query,
+		user.ID,
+		user.Email,
+		user.PasswordHash,
+		user.Timezone,
+		user.CreatedAt,
+		user.UpdatedAt,
+	)
+
+	if err != nil {
+		if isUniqueConstraintError(err) {
+			return errors.ErrAlreadyExists
+		}
+		return fmt.Errorf("failed to create user: %w", err)
+	}
+
+	return nil
+}
+
+func (r *UserRepository) FindByID(ctx context.Context, id string) (*entities.User, error) {
+	query := `
+		SELECT id, email, password_hash, timezone, created_at, updated_at
+		FROM users
+		WHERE id = ?
+	`
+
+	var user entities.User
+	err := r.db.QueryRowContext(ctx, query, id).Scan(
+		&user.ID,
+		&user.Email,
+		&user.PasswordHash,
+		&user.Timezone,
+		&user.CreatedAt,
+		&user.UpdatedAt,
+	)
+
+	if err == sql.ErrNoRows {
+		return nil, errors.ErrNotFound
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to find user: %w", err)
+	}
+
+	return &user, nil
+}
+
+func (r *UserRepository) FindByEmail(ctx context.Context, email string) (*entities.User, error) {
+	query := `
+		SELECT id, email, password_hash, timezone, created_at, updated_at
+		FROM users
+		WHERE email = ?
+	`
+
+	var user entities.User
+	err := r.db.QueryRowContext(ctx, query, email).Scan(
+		&user.ID,
+		&user.Email,
+		&user.PasswordHash,
+		&user.Timezone,
+		&user.CreatedAt,
+		&user.UpdatedAt,
+	)
+
+	if err == sql.ErrNoRows {
+		return nil, errors.ErrNotFound
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to find user: %w", err)
+	}
+
+	return &user, nil
+}
+
+func (r *UserRepository) Update(ctx context.Context, user *entities.User) error {
+	query := `
+		UPDATE users
+		SET email = ?, password_hash = ?, timezone = ?, updated_at = ?
+		WHERE id = ?
+	`
+
+	result, err := r.db.ExecContext(ctx, query,
+		user.Email,
+		user.PasswordHash,
+		user.Timezone,
+		user.UpdatedAt,
+		user.ID,
+	)
+
+	if err != nil {
+		return fmt.Errorf("failed to update user: %w", err)
+	}
+
+	rows, _ := result.RowsAffected()
+	if rows == 0 {
+		return errors.ErrNotFound
+	}
+
+	return nil
+}
+
+func isUniqueConstraintError(err error) bool {
+	return err != nil && strings.Contains(err.Error(), "UNIQUE constraint failed")
+}