Class: GameOfGithubLife::DateCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/game_of_github_life/date_calculator.rb

Constant Summary collapse

NUMBER_OF_COLUMNS = 
53
DAYS_IN_WEEK = 
7
DAY = 
60 * 60 * 24

Class Method Summary collapse

Class Method Details

.date_by_cell(x, y, year: nil) ⇒ Object

time for cell with x cells left and y cells down from top-left cell in contributions calendar for given (or current) year



22
23
24
25
26
27
28
29
30
31
 
# File 'lib/game_of_github_life/date_calculator.rb', line 22

def date_by_cell(x, y, year: nil)
  unless (0...DAYS_IN_WEEK).cover?(x)
    raise ArgumentError, "x = #{x} should in 0...#{DAYS_IN_WEEK}"
  end
  unless (0...NUMBER_OF_COLUMNS).cover?(y)
    raise ArgumentError, "y = #{y} should in 0...#{NUMBER_OF_COLUMNS}"
  end

  start_date(year) + DAY * (x + DAYS_IN_WEEK * y)
end

.start_date(year = nil) ⇒ Object

time for top-left cell in contributions calendar for given (or current) year



9
10
11
12
13
14
15
16
17
18
 
# File 'lib/game_of_github_life/date_calculator.rb', line 9

def start_date(year = nil)
  now = Time.now
  date = if year
           Time.new(year, 1, 1, 12) - DAY * DAYS_IN_WEEK
         else
           Time.new(now.year - 1, now.month, now.day, 12)
         end

  date + DAY * (DAYS_IN_WEEK - date.wday)
end