require "sqlite3/constants"

module SQLite3
  class Value
    attr_reader :handle

    def initialize(db, handle)
      @driver = db.driver
      @handle = handle
    end

    def null?
      type == :null
    end

    def to_blob
      @driver.value_blob(@handle)
    end

    def length(utf16 = false)
      if utf16
        @driver.value_bytes16(@handle)
      else
        @driver.value_bytes(@handle)
      end
    end

    def to_f
      @driver.value_double(@handle)
    end

    def to_i
      @driver.value_int(@handle)
    end

    def to_int64
      @driver.value_int64(@handle)
    end

    def to_s(utf16 = false)
      @driver.value_text(@handle, utf16)
    end

    def type
      case @driver.value_type(@handle)
      when Constants::ColumnType::INTEGER then :int
      when Constants::ColumnType::FLOAT then :float
      when Constants::ColumnType::TEXT then :text
      when Constants::ColumnType::BLOB then :blob
      when Constants::ColumnType::NULL then :null
      end
    end
  end
end