package auth

import (
	"billit/internal/database"
)

// DBUserStore adapts database.Service to auth.UserStore interface
type DBUserStore struct {
	db database.Service
}

// NewDBUserStore creates a new user store backed by the database
func NewDBUserStore(db database.Service) *DBUserStore {
	return &DBUserStore{db: db}
}

// CreateUser creates a new user
func (s *DBUserStore) CreateUser(email, passwordHash string) (*User, error) {
	dbUser, err := s.db.CreateUser(email, passwordHash)
	if err != nil {
		return nil, err
	}
	return &User{
		ID:             dbUser.ID,
		Email:          dbUser.Email,
		Password:       dbUser.Password,
		CompanyDetails: dbUser.CompanyDetails,
		BankDetails:    dbUser.BankDetails,
		CreatedAt:      dbUser.CreatedAt,
	}, nil
}

// GetUserByEmail retrieves a user by email
func (s *DBUserStore) GetUserByEmail(email string) (*User, error) {
	dbUser, err := s.db.GetUserByEmail(email)
	if err != nil {
		return nil, err
	}
	if dbUser == nil {
		return nil, nil
	}
	return &User{
		ID:             dbUser.ID,
		Email:          dbUser.Email,
		Password:       dbUser.Password,
		CompanyDetails: dbUser.CompanyDetails,
		BankDetails:    dbUser.BankDetails,
		CreatedAt:      dbUser.CreatedAt,
	}, nil
}

// GetUserByID retrieves a user by ID
func (s *DBUserStore) GetUserByID(id string) (*User, error) {
	dbUser, err := s.db.GetUserByID(id)
	if err != nil {
		return nil, err
	}
	if dbUser == nil {
		return nil, nil
	}
	return &User{
		ID:             dbUser.ID,
		Email:          dbUser.Email,
		Password:       dbUser.Password,
		CompanyDetails: dbUser.CompanyDetails,
		BankDetails:    dbUser.BankDetails,
		CreatedAt:      dbUser.CreatedAt,
	}, nil
}