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# frozen_string_literal: true
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require "date"
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class AcademicYear < ActiveRecord::Base
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include FriendlyId
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friendly_id :range, use: [:slugged]
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scope :by_range, -> { all.map { |academic_year| [academic_year.range, academic_year] }.to_h }
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scope :of_year, ->(range) { all.select { |ay| ay.range.start_with?(range) } }
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def self.range_from_date(date, ranges)
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year = parse_year_range(date:)
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range = ranges.find { |item| item.downcase == "#{year.start}-#{year.end.to_s[2, 3]} #{year.season.downcase}" }
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range ||= ranges.find { |item| item.downcase == "#{year.start}-#{year.end.to_s[2, 3]}" }
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range
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end
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def formatted_range
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years = range.split("-").map(&:split).flatten
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"#{years.first} – 20#{years.second} #{years[2]}".chomp
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end
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def range_without_season
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range.scan(/[\d-]/).join
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end
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private
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def self.parse_year_range(date:)
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year = date.year
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ayr = if date.month > 6
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AcademicYearRange.new(year, year + 1)
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else
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AcademicYearRange.new(year - 1, year)
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end
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ayr.season = if in_fall?(date, ayr)
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"Fall"
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else
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"Spring"
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end
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ayr
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end
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def self.in_fall?(date, ayr)
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date.between?(Date.parse("#{ayr.start}-7-1"), last_sunday(2, ayr.end) - 1)
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end
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# returns a Date object being the last sunday of the given month/year
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# month: integer between 1 and 12
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def self.last_sunday(month, year)
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# get the last day of the month
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date = Date.new year, month, -1
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# subtract number of days we are ahead of sunday
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date -= date.wday
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end
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private_class_method :in_fall?
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private_class_method :parse_year_range
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end
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AcademicYearRange = Struct.new(:start, :end, :season)
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