Module: Service::TimeZone

Defined in:
lib/service/time_zone.rb

Constant Summary collapse

ZONES = 
{
  'ao' => 'Africa/Casablanca', # Angola
  'bw' => 'Africa/Harare', # Botswana
  'cd' => 'Africa/Casablanca', # Democratic Republic of the Congo
  'sz' => 'Africa/Harare', # Eswatini
  'gh' => 'Atlantic/Azores', # Ghana
  'intl' => 'Atlantic/Azores', # International (Generic UTC)
  'ci' => 'Atlantic/Azores', # Ivory Coast
  'je' => 'Europe/London',          # Jersey
  'ke' => 'Africa/Nairobi',         # Kenya
  'ls' => 'Africa/Harare',          # Maseru Lesotho
  'mw' => 'Africa/Harare', # Malawi
  'mu' => 'Asia/Muscat', # Mauritius
  'mz' => 'Africa/Harare', # Mozambique
  'na' => 'Africa/Harare', # Namibia
  'ng' => 'Africa/Casablanca', # Nigeria
  'za' => 'Africa/Harare', # South Africa
  'tz' => 'Africa/Nairobi', # Tanzania
  'ug' => 'Africa/Nairobi', # Uganda
  'zm' => 'Africa/Nairobi', # Zambia
  'zw' => 'Africa/Harare', # Zimbabwe
  'us' => 'America/Los_Angeles'
}

Class Method Summary collapse

Class Method Details

.duration_in_hours(start_day, start_hour, end_day, end_hour) ⇒ Object

Raises:

  • (ArgumentError) 


49
50
51
52
53
54
55
56
57
58
59
60
 
# File 'lib/service/time_zone.rb', line 49

def self.duration_in_hours(start_day, start_hour, end_day, end_hour)
  start_index = Date::DAYNAMES.index(start_day.capitalize)
  end_index = Date::DAYNAMES.index(end_day.capitalize)

  raise ArgumentError, 'Invalid day provided' if start_index.nil? || end_index.nil?

  end_index += 7 if start_index > end_index

  start_hours = start_index * 24 + start_hour.to_i
  end_hours = end_index * 24 + end_hour.to_i
  end_hours - start_hours
end

.iso8601(country_code:, local_time:) ⇒ Object

return the local time in the country return nil if country_code is not found in [ZONES]



36
37
38
39
 
# File 'lib/service/time_zone.rb', line 36

def self.iso8601(country_code:, local_time:)
  zone_id = ZONES[country_code] || 'GMT'
  iso8601_with_zone_id(zone_id, local_time)
end

.iso8601_with_zone_id(zone_id, local_time) ⇒ Object

Format the time to ISO 8601 with the zone identifier (example: “America/New_York”)



43
44
45
46
47
 
# File 'lib/service/time_zone.rb', line 43

def self.iso8601_with_zone_id(zone_id, local_time)
  zone = ActiveSupport::TimeZone[zone_id]
  datetime = zone.local(local_time.year, local_time.month, local_time.day, local_time.hour, local_time.minute)
  datetime.iso8601 + "[#{zone.name}]"
end