feat: 实现用户注册功能，包括数据库表结构、gRPC 服务和业务逻辑

backend/services/user-svc/internal/repository/repo.go

@@ -0,0 +1,126 @@
+package repository
+
+import (
+	"database/sql"
+	"time"
+
+	"backend/services/user-svc/internal/domain"
+	"backend/shared/pkg/errors"
+
+	"github.com/google/uuid"
+	"golang.org/x/crypto/bcrypt"
+)
+
+type UserRepository struct {
+	db *sql.DB
+}
+
+func NewUserRepository(db *sql.DB) *UserRepository {
+	return &UserRepository{db: db}
+}
+
+// Register 用户注册
+func (r *UserRepository) Register(req *domain.RegisterRequest) (*domain.RegisterResponse, error) {
+	// 开启事务
+	tx, err := r.db.Begin()
+	if err != nil {
+		return nil, errors.WrapError(err, "failed to begin transaction")
+	}
+
+	// 检查账号是否已存在
+	var exists bool
+	query := "SELECT EXISTS(SELECT 1 FROM user_login_account WHERE account = $1 AND deleted = false)"
+	if err := tx.QueryRow(query, req.Account).Scan(&exists); err != nil {
+		tx.Rollback()
+		return nil, errors.WrapError(err, "failed to check account existence")
+	}
+
+	if exists {
+		tx.Rollback()
+		return nil, errors.ErrConflict
+	}
+
+	// 创建用户
+	userID := uuid.New()
+	now := time.Now()
+
+	userQuery := "INSERT INTO user_main (id, deleted, create_time, update_time) VALUES ($1, $2, $3, $4)"
+	if _, err := tx.Exec(userQuery, userID, false, now, now); err != nil {
+		tx.Rollback()
+		return nil, errors.WrapError(err, "failed to create user")
+	}
+
+	// 创建登录账号
+	accountID := uuid.New()
+	accountQuery := "INSERT INTO user_login_account (id, user_id, account, deleted, create_time, update_time) VALUES ($1, $2, $3, $4, $5, $6)"
+	if _, err := tx.Exec(accountQuery, accountID, userID, req.Account, false, now, now); err != nil {
+		tx.Rollback()
+		return nil, errors.WrapError(err, "failed to create login account")
+	}
+
+	// 加密密码
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+	if err != nil {
+		tx.Rollback()
+		return nil, errors.WrapError(err, "failed to hash password")
+	}
+
+	// 创建密码记录
+	passwordID := uuid.New()
+	passwordQuery := "INSERT INTO user_login_password (id, user_id, password, deleted, create_time, update_time) VALUES ($1, $2, $3, $4, $5, $6)"
+	if _, err := tx.Exec(passwordQuery, passwordID, userID, string(hashedPassword), false, now, now); err != nil {
+		tx.Rollback()
+		return nil, errors.WrapError(err, "failed to create password record")
+	}
+
+	// 提交事务
+	if err := tx.Commit(); err != nil {
+		return nil, errors.WrapError(err, "failed to commit transaction")
+	}
+
+	return &domain.RegisterResponse{
+		UserID:  userID,
+		Account: req.Account,
+	}, nil
+}
+
+// GetUserByAccount 根据账号获取用户信息
+func (r *UserRepository) GetUserByAccount(account string) (*domain.User, *domain.UserLoginAccount, *domain.UserLoginPassword, error) {
+	// 获取登录账号
+	var accountRecord domain.UserLoginAccount
+	accountQuery := "SELECT id, user_id, account, deleted, create_time, update_time FROM user_login_account WHERE account = $1 AND deleted = false"
+	if err := r.db.QueryRow(accountQuery, account).Scan(
+		&accountRecord.ID, &accountRecord.UserID, &accountRecord.Account, &accountRecord.Deleted, &accountRecord.CreateTime, &accountRecord.UpdateTime,
+	); err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil, nil, errors.ErrNotFound
+		}
+		return nil, nil, nil, errors.WrapError(err, "failed to get login account")
+	}
+
+	// 获取用户信息
+	var user domain.User
+	userQuery := "SELECT id, deleted, create_time, update_time FROM user_main WHERE id = $1 AND deleted = false"
+	if err := r.db.QueryRow(userQuery, accountRecord.UserID).Scan(
+		&user.ID, &user.Deleted, &user.CreateTime, &user.UpdateTime,
+	); err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil, nil, errors.ErrNotFound
+		}
+		return nil, nil, nil, errors.WrapError(err, "failed to get user")
+	}
+
+	// 获取密码记录
+	var passwordRecord domain.UserLoginPassword
+	passwordQuery := "SELECT id, user_id, password, deleted, create_time, update_time FROM user_login_password WHERE user_id = $1 AND deleted = false"
+	if err := r.db.QueryRow(passwordQuery, accountRecord.UserID).Scan(
+		&passwordRecord.ID, &passwordRecord.UserID, &passwordRecord.Password, &passwordRecord.Deleted, &passwordRecord.CreateTime, &passwordRecord.UpdateTime,
+	); err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil, nil, errors.ErrNotFound
+		}
+		return nil, nil, nil, errors.WrapError(err, "failed to get password record")
+	}
+
+	return &user, &accountRecord, &passwordRecord, nil
+}