|
| 1 | +package dao |
| 2 | + |
| 3 | +import ( |
| 4 | + "OPP/auth/api" |
| 5 | + "OPP/auth/db" |
| 6 | + "context" |
| 7 | + "errors" |
| 8 | + "fmt" |
| 9 | + "strings" |
| 10 | +) |
| 11 | + |
| 12 | +var ( |
| 13 | + ErrUserAlreadyExists = errors.New("user already exists") |
| 14 | + ErrInvalidUser = errors.New("invalid user data") |
| 15 | + ErrUserNotFound = errors.New("user not found") |
| 16 | + ErrInvalidPassword = errors.New("invalid password") |
| 17 | +) |
| 18 | + |
| 19 | +type UserDao struct { |
| 20 | + db db.DB |
| 21 | +} |
| 22 | + |
| 23 | +func NewUserDao() *UserDao { |
| 24 | + return &UserDao{ |
| 25 | + db: *db.GetDB(), |
| 26 | + } |
| 27 | +} |
| 28 | + |
| 29 | +func (d *UserDao) GetUsers(c context.Context, limit *int, offset *int) []api.UserResponse { |
| 30 | + query := "SELECT username, name, surname, email FROM users LIMIT $1 OFFSET $2" |
| 31 | + params := []any{20, 0} |
| 32 | + if limit != nil { |
| 33 | + params[0] = *limit |
| 34 | + } |
| 35 | + if offset != nil { |
| 36 | + params[1] = *offset |
| 37 | + } |
| 38 | + |
| 39 | + var users []api.UserResponse |
| 40 | + rows, err := d.db.Query(c, query, params...) |
| 41 | + if err != nil { |
| 42 | + fmt.Printf("db error: %v\n", err.Error()) |
| 43 | + return users |
| 44 | + } |
| 45 | + defer rows.Close() |
| 46 | + |
| 47 | + for rows.Next() { |
| 48 | + var user api.UserResponse |
| 49 | + if err := rows.Scan(&user.Username, &user.Name, &user.Surname, &user.Email); err != nil { |
| 50 | + fmt.Printf("row scan error: %v\n", err.Error()) |
| 51 | + continue |
| 52 | + } |
| 53 | + users = append(users, user) |
| 54 | + } |
| 55 | + return users |
| 56 | +} |
| 57 | + |
| 58 | +func (d *UserDao) AddUser(c context.Context, user api.UserRequest) error { |
| 59 | + query := "INSERT INTO users (username, name, surname, email, password, role) VALUES ($1, $2, $3, $4, $5, $6)" |
| 60 | + _, err := d.db.Exec(c, query, user.Username, user.Name, user.Surname, user.Email, user.Password, user.Role) |
| 61 | + if err != nil { |
| 62 | + if strings.Contains(err.Error(), "UNIQUE constraint failed") { |
| 63 | + return ErrUserAlreadyExists |
| 64 | + } |
| 65 | + return fmt.Errorf("failed to add user: %w", err) |
| 66 | + } |
| 67 | + return nil |
| 68 | +} |
| 69 | + |
| 70 | +func (d *UserDao) GetUser(c context.Context, username string) (*api.UserResponse, error) { |
| 71 | + query := "SELECT username, name, surname, email FROM users WHERE username = $1" |
| 72 | + rows, err := d.db.Query(c, query, username) |
| 73 | + if err != nil { |
| 74 | + return nil, fmt.Errorf("db error: %w", err) |
| 75 | + } |
| 76 | + defer rows.Close() |
| 77 | + |
| 78 | + var user api.UserResponse |
| 79 | + if rows.Next() { |
| 80 | + if err := rows.Scan(&user.Username, &user.Name, &user.Surname, &user.Email); err != nil { |
| 81 | + return nil, fmt.Errorf("failed to scan user: %w", err) |
| 82 | + } |
| 83 | + return &user, nil |
| 84 | + } |
| 85 | + return nil, ErrUserNotFound |
| 86 | +} |
| 87 | + |
| 88 | +func (d *UserDao) GetUserRole(c context.Context, username string) (api.UserRequestRole, error) { |
| 89 | + query := "SELECT role FROM users WHERE username = $1" |
| 90 | + rows, err := d.db.Query(c, query, username) |
| 91 | + if err != nil { |
| 92 | + return "", fmt.Errorf("db error: %w", err) |
| 93 | + } |
| 94 | + defer rows.Close() |
| 95 | + |
| 96 | + var role api.UserRequestRole |
| 97 | + if rows.Next() { |
| 98 | + if err := rows.Scan(&role); err != nil { |
| 99 | + return "", fmt.Errorf("failed to scan user role: %w", err) |
| 100 | + } |
| 101 | + return role, nil |
| 102 | + } |
| 103 | + return "", ErrUserNotFound |
| 104 | +} |
| 105 | + |
| 106 | +func (d *UserDao) CheckPassword(c context.Context, username string, password string) error { |
| 107 | + query := "SELECT password FROM users WHERE username = $1" |
| 108 | + rows, err := d.db.Query(c, query, username) |
| 109 | + if err != nil { |
| 110 | + return fmt.Errorf("db error: %w", err) |
| 111 | + } |
| 112 | + defer rows.Close() |
| 113 | + |
| 114 | + var storedPassword string |
| 115 | + if rows.Next() { |
| 116 | + if err := rows.Scan(&storedPassword); err != nil { |
| 117 | + return fmt.Errorf("failed to scan password: %w", err) |
| 118 | + } |
| 119 | + if storedPassword != password { |
| 120 | + return ErrInvalidPassword |
| 121 | + } |
| 122 | + return nil |
| 123 | + } |
| 124 | + return ErrUserNotFound |
| 125 | +} |
| 126 | + |
| 127 | +func (d *UserDao) DeleteAllUsers(c context.Context) error { |
| 128 | + query := "DELETE FROM users" |
| 129 | + _, err := d.db.Exec(c, query) |
| 130 | + if err != nil { |
| 131 | + return fmt.Errorf("failed to delete all users: %w", err) |
| 132 | + } |
| 133 | + return nil |
| 134 | +} |
| 135 | + |
| 136 | +func (d *UserDao) DeleteUser(c context.Context, username string) error { |
| 137 | + query := "DELETE FROM users WHERE username = $1" |
| 138 | + result, err := d.db.Exec(c, query, username) |
| 139 | + if err != nil { |
| 140 | + return fmt.Errorf("failed to delete user: %w", err) |
| 141 | + } |
| 142 | + |
| 143 | + rowsAffected := result.RowsAffected() |
| 144 | + if rowsAffected == 0 { |
| 145 | + return ErrUserNotFound |
| 146 | + } |
| 147 | + return nil |
| 148 | +} |
| 149 | + |
| 150 | +func (d *UserDao) UpdateUser(c context.Context, username string, user api.UserRequest) error { |
| 151 | + query := "UPDATE users SET name = $1, surname = $2, email = $3 WHERE username = $4" |
| 152 | + result, err := d.db.Exec(c, query, user.Name, user.Surname, user.Email, username) |
| 153 | + if err != nil { |
| 154 | + if strings.Contains(err.Error(), "UNIQUE constraint failed") { |
| 155 | + return ErrUserAlreadyExists |
| 156 | + } |
| 157 | + return fmt.Errorf("failed to update user: %w", err) |
| 158 | + } |
| 159 | + |
| 160 | + rowsAffected := result.RowsAffected() |
| 161 | + if rowsAffected == 0 { |
| 162 | + return ErrUserNotFound |
| 163 | + } |
| 164 | + return nil |
| 165 | +} |
0 commit comments