Class: ForestLiana::OperatorDateIntervalParser

Inherits:
Object
  • Object
show all
Defined in:
app/services/forest_liana/operator_date_interval_parser.rb

Constant Summary collapse

PERIODS = 
{
  :$yesterday => { duration: 1, period: 'day' },
  :$previousWeek => { duration: 1, period: 'week' },
  :$previousMonth => { duration: 1, period: 'month' },
  :$previousQuarter => { duration: 3, period: 'month',
                        period_of_time: 'quarter' },
  :$previousYear => { duration: 1, period: 'year' },
  :$weekToDate => { duration: 1, period: 'week', to_date: true },
  :$monthToDate => { duration: 1, period: 'month', to_date: true },
  :$quarterToDate => { duration: 3, period: 'month',
                      period_of_time: 'quarter', to_date: true },
  :$yearToDate => { duration: 1, period: 'year', to_date: true }
}
PERIODS_PAST = 
'$past'
PERIODS_FUTURE = 
'$future'
PERIODS_TODAY = 
'$today'
PERIODS_PREVIOUS_X_DAYS = 
/^\$previous(\d+)Days$/
PERIODS_X_DAYS_TO_DATE = 
/^\$(\d+)DaysToDate$/
PERIODS_X_HOURS_BEFORE = 
/^\$(\d+)HoursBefore$/
PERIODS_X_HOURS_AFTER = 
/^\$(\d+)HoursAfter$/

Instance Method Summary collapse

Constructor Details

#initialize(value, timezone) ⇒ OperatorDateIntervalParser

Returns a new instance of OperatorDateIntervalParser.



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 26

def initialize(value, timezone)
  @value = value
  @timezone_offset = Time.now.in_time_zone(timezone).utc_offset / 3600
end

Instance Method Details

#get_interval_date_filter ⇒ Object 



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 72

def get_interval_date_filter
  return nil unless is_interval_date_value()

  return ">= '#{Time.now}'" if @value == PERIODS_FUTURE
  return "<= '#{Time.now}'" if @value == PERIODS_PAST

  if @value == PERIODS_TODAY
    return "BETWEEN '#{to_client_timezone(Time.now.beginning_of_day)}' " +
      "AND '#{to_client_timezone(Time.now.end_of_day)}'"
  end

  match = PERIODS_PREVIOUS_X_DAYS.match(@value)
  if match && match[1]
    return "BETWEEN '" +
      "#{to_client_timezone(Integer(match[1]).day.ago.beginning_of_day)}'" +
      " AND '#{to_client_timezone(1.day.ago.end_of_day)}'"
  end

  match = PERIODS_X_DAYS_TO_DATE.match(@value)
  if match && match[1]
    return "BETWEEN '" +
      "#{to_client_timezone((Integer(match[1]) - 1).day.ago.beginning_of_day)}'" +
      " AND '#{Time.now}'"
  end

  match = PERIODS_X_HOURS_BEFORE.match(@value)
  if match && match[1]
    return "< '#{to_client_timezone((Integer(match[1])).hour.ago)}'"
  end

  match = PERIODS_X_HOURS_AFTER.match(@value)
  if match && match[1]
    return "> '#{to_client_timezone((Integer(match[1])).hour.ago)}'"
  end

  duration = PERIODS[@value.to_sym][:duration]
  period = PERIODS[@value.to_sym][:period]
  period_of_time = PERIODS[@value.to_sym][:period_of_time] ||
    PERIODS[@value.to_sym][:period]
  to_date = PERIODS[@value.to_sym][:to_date]

  if to_date
    from = to_client_timezone(Time.now.send("beginning_of_#{period_of_time}"))
    to = Time.now
  else
    from = to_client_timezone(duration.send(period).ago
      .send("beginning_of_#{period_of_time}"))
    to = to_client_timezone(1.send(period).ago
      .send("end_of_#{period_of_time}"))
  end
  "BETWEEN '#{from}' AND '#{to}'"
end

#get_interval_date_filter_for_previous_interval ⇒ Object 



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 125

def get_interval_date_filter_for_previous_interval
  return nil unless has_previous_interval()

  if @value == PERIODS_TODAY
    return "BETWEEN '#{to_client_timezone(1.day.ago.beginning_of_day)}' AND " +
      "'#{to_client_timezone(1.day.ago.end_of_day)}'"
  end

  match = PERIODS_PREVIOUS_X_DAYS.match(@value)
  if match && match[1]
    return "BETWEEN '" +
      "#{to_client_timezone((Integer(match[1]) * 2).day.ago.beginning_of_day)}'" +
      " AND '#{to_client_timezone((Integer(match[1]) + 1).day.ago.end_of_day)}'"
  end

  match = PERIODS_X_DAYS_TO_DATE.match(@value)
  if match && match[1]
    return "BETWEEN '" +
      "#{to_client_timezone(((Integer(match[1]) * 2) - 1).day.ago.beginning_of_day)}'" +
      " AND '#{to_client_timezone(Integer(match[1]).day.ago)}'"
  end

  duration = PERIODS[@value.to_sym][:duration]
  period = PERIODS[@value.to_sym][:period]
  period_of_time = PERIODS[@value.to_sym][:period_of_time] ||
    PERIODS[@value.to_sym][:period]
  to_date = PERIODS[@value.to_sym][:to_date]

  if to_date
    from = to_client_timezone((duration).send(period).ago
             .send("beginning_of_#{period_of_time}"))
    to = to_client_timezone((duration).send(period).ago)
  else
    from = to_client_timezone((duration * 2).send(period).ago
             .send("beginning_of_#{period_of_time}"))
    to = to_client_timezone((1 + duration).send(period).ago
          .send("end_of_#{period_of_time}"))
  end
  "BETWEEN '#{from}' AND '#{to}'"
end

#has_previous_interval ⇒ Object 



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 52

def has_previous_interval
  return false if @value.nil?
  return true if PERIODS[@value.to_sym]

  return true if PERIODS_TODAY == @value

  match = PERIODS_PREVIOUS_X_DAYS.match(@value)
  return true if match && match[1]

  match = PERIODS_X_DAYS_TO_DATE.match(@value)
  return true if match && match[1]

  false
end

#is_interval_date_value ⇒ Object 



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 31

def is_interval_date_value
  return false if @value.nil?
  return true if PERIODS[@value.to_sym]

  return true if [PERIODS_PAST, PERIODS_FUTURE, PERIODS_TODAY].include? @value

  match = PERIODS_PREVIOUS_X_DAYS.match(@value)
  return true if match && match[1]

  match = PERIODS_X_DAYS_TO_DATE.match(@value)
  return true if match && match[1]

  match = PERIODS_X_HOURS_BEFORE.match(@value)
  return true if match && match[1]

  match = PERIODS_X_HOURS_AFTER.match(@value)
  return true if match && match[1]

  false
end

#to_client_timezone(date) ⇒ Object 



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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 67

def to_client_timezone(date)
  # NOTICE: By default, Rails store the dates without timestamp in the database.
  date - @timezone_offset.hours
end