botanicus/scheduled-format

# frozen_string_literal: true

class Task
  attr_reader :body, :time_frame, :start_time, :tags

  # Create a new scheduled task.
  #
  # @param body [String] the task description.
  # @param start_time [Hour] when the task starts.
  # @param time_frame [String] name, initials or an abbreviation of a time frame
  #   to which the task will be scheduled.
  # @param tags [Array<Symbol>] list of tags.
  def initialize(body:, time_frame: nil, start_time: nil, tags: Array.new)
    @body, @time_frame, @start_time, @tags = body, time_frame, start_time, tags

    raise ArgumentError, "Body cannot be empty." if body.empty?

    if start_time && !start_time.is_a?(Hour)
      raise ArgumentError, "Hour instance was expected, got #{start_time.class}"
    end

    if !tags.empty? && tags.any? { |tag| !tag.is_a?(Symbol) }
      raise ArgumentError, "Tags are supposed to be an array of symbols."
    end
  end

  # Format task in the {Pomodoro::Formats::Scheduled scheduled task list format}.
  # @since 0.2
  def to_s
    [
      '-',
      ("[#{@time_frame}]" if @time_frame),
      ("[#{@start_time}]" if @start_time),
      @body.to_s, *@tags.map { |tag| "##{tag}" }
    ].compact.join(' ')
  end
end

export { Task }