module Backend::Db
  Clear.enum UserRole, :teacher, :student

  struct UserRole
    # API representation of the enum
    def to_api : Api::Schema::UserRole
      case self
      when Student
        Api::Schema::UserRole::Student
      when Teacher
        Api::Schema::UserRole::Teacher
      else
        raise "Invalid enum value for UserRole"
      end
    end

    # DB representation of the enum
    def self.from_api(role : Api::Schema::UserRole) : self
      role.to_db
    end
  end

  class User
    include Clear::Model
    self.table = :users

    primary_key type: :serial

    column username : String
    column password_hash : Crypto::Bcrypt::Password
    column first_name : String
    column last_name : String
    column role : UserRole
    column admin : Bool = false

    has_one student : Student?, foreign_key: :user_id
    has_one teacher : Teacher?, foreign_key: :user_id

    has_many tokens : Token, foreign_key: :user_id

    def password=(x : String)
      self.password_hash = Crypto::Bcrypt::Password.create(x)
    end
  end
end