Class: ForestLiana::OperatorDateIntervalParser

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

Constant Summary collapse

OPERATOR_PAST =
'past'
OPERATOR_FUTURE =
'future'
OPERATOR_TODAY =
'today'
OPERATOR_YESTERDAY =
'yesterday'
OPERATOR_PREVIOUS_WEEK =
'previous_week'
OPERATOR_PREVIOUS_MONTH =
'previous_month'
OPERATOR_PREVIOUS_QUARTER =
'previous_quarter'
OPERATOR_PREVIOUS_YEAR =
'previous_year'
OPERATOR_PREVIOUS_WEEK_TO_DATE =
'previous_week_to_date'
OPERATOR_PREVIOUS_MONTH_TO_DATE =
'previous_month_to_date'
OPERATOR_PREVIOUS_QUARTER_TO_DATE =
'previous_quarter_to_date'
OPERATOR_PREVIOUS_YEAR_TO_DATE =
'previous_year_to_date'
OPERATOR_PREVIOUS_X_DAYS =
'previous_x_days'
OPERATOR_PREVIOUS_X_DAYS_TO_DATE =
'previous_x_days_to_date'
OPERATOR_BEFORE_X_HOURS_AGO =
'before_x_hours_ago'
OPERATOR_AFTER_X_HOURS_AGO =
'after_x_hours_ago'
PERIODS =
{
  OPERATOR_YESTERDAY => { duration: 1, period: 'day' },
  OPERATOR_PREVIOUS_WEEK => { duration: 1, period: 'week' },
  OPERATOR_PREVIOUS_WEEK_TO_DATE => { duration: 1, period: 'week', to_date: true },
  OPERATOR_PREVIOUS_MONTH => { duration: 1, period: 'month' },
  OPERATOR_PREVIOUS_MONTH_TO_DATE => { duration: 1, period: 'month', to_date: true },
  OPERATOR_PREVIOUS_QUARTER => { duration: 3, period: 'month', period_of_time: 'quarter' },
  OPERATOR_PREVIOUS_QUARTER_TO_DATE => { duration: 3, period: 'month', period_of_time: 'quarter', to_date: true },
  OPERATOR_PREVIOUS_YEAR => { duration: 1, period: 'year' },
  OPERATOR_PREVIOUS_YEAR_TO_DATE => { duration: 1, period: 'year', to_date: true }
}
DATE_OPERATORS_HAVING_PREVIOUS_INTERVAL =
[
  OPERATOR_TODAY,
  OPERATOR_YESTERDAY,
  OPERATOR_PREVIOUS_WEEK,
  OPERATOR_PREVIOUS_MONTH,
  OPERATOR_PREVIOUS_QUARTER,
  OPERATOR_PREVIOUS_YEAR,
  OPERATOR_PREVIOUS_WEEK_TO_DATE,
  OPERATOR_PREVIOUS_MONTH_TO_DATE,
  OPERATOR_PREVIOUS_QUARTER_TO_DATE,
  OPERATOR_PREVIOUS_YEAR_TO_DATE,
  OPERATOR_PREVIOUS_X_DAYS,
  OPERATOR_PREVIOUS_X_DAYS_TO_DATE
]
DATE_OPERATORS =
DATE_OPERATORS_HAVING_PREVIOUS_INTERVAL.concat [
  OPERATOR_FUTURE,
  OPERATOR_PAST,
  OPERATOR_BEFORE_X_HOURS_AGO,
  OPERATOR_AFTER_X_HOURS_AGO
]

Instance Method Summary collapse

Constructor Details

#initialize(timezone) ⇒ OperatorDateIntervalParser

Returns a new instance of OperatorDateIntervalParser.


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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 56

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

Instance Method Details

#ensure_integer_value(value) ⇒ Object


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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 160

def ensure_integer_value(value)
  unless value.is_a?(Integer) || /\A[-+]?\d+\z/.match(value)
    raise ForestLiana::Errors::HTTP422Error.new('\'value\' should be an Integer')
  end
end

#get_date_filter(operator, value) ⇒ Object


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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 73

def get_date_filter(operator, value)
  return nil unless is_date_operator? operator

  filter = case operator
    when OPERATOR_FUTURE
      ">= '#{Time.now}'"
    when OPERATOR_PAST
      "<= '#{Time.now}'"
    when OPERATOR_TODAY
      "BETWEEN '#{to_client_timezone(Time.now.beginning_of_day)}' " +
        "AND '#{to_client_timezone(Time.now.end_of_day)}'"
    when OPERATOR_PREVIOUS_X_DAYS
      ensure_integer_value(value)
      "BETWEEN '" +
        "#{to_client_timezone(Integer(value).day.ago.beginning_of_day)}'" +
        " AND '#{to_client_timezone(1.day.ago.end_of_day)}'"
    when OPERATOR_PREVIOUS_X_DAYS_TO_DATE
      ensure_integer_value(value)
      "BETWEEN '" +
        "#{to_client_timezone((Integer(value) - 1).day.ago.beginning_of_day)}'" +
        " AND '#{Time.now}'"
    when OPERATOR_BEFORE_X_HOURS_AGO
      ensure_integer_value(value)
      "< '#{(Integer(value)).hour.ago}'"
    when OPERATOR_AFTER_X_HOURS_AGO
      ensure_integer_value(value)
      "> '#{(Integer(value)).hour.ago}'"
  end

  if filter != nil
    return filter
  end

  duration = PERIODS[operator][:duration]
  period = PERIODS[operator][:period]
  period_of_time = PERIODS[operator][:period_of_time] || period
  to_date = PERIODS[operator][: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_date_filter_for_previous_interval(operator, value) ⇒ Object


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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 123

def get_date_filter_for_previous_interval(operator, value)
  return nil unless has_previous_interval? operator

  case operator
  when OPERATOR_TODAY
    return "BETWEEN '#{to_client_timezone(1.day.ago.beginning_of_day)}' AND " +
      "'#{to_client_timezone(1.day.ago.end_of_day)}'"
  when OPERATOR_PREVIOUS_X_DAYS
    ensure_integer_value(value)
    return "BETWEEN '" +
      "#{to_client_timezone((Integer(value) * 2).day.ago.beginning_of_day)}'" +
      " AND '#{to_client_timezone((Integer(value) + 1).day.ago.end_of_day)}'"
  when OPERATOR_PREVIOUS_X_DAYS_TO_DATE
    ensure_integer_value(value)
    return "BETWEEN '" +
      "#{to_client_timezone(((Integer(value) * 2) - 1).day.ago.beginning_of_day)}'" +
      " AND '#{to_client_timezone(Integer(value).day.ago)}'"
  end

  duration = PERIODS[operator][:duration]
  period = PERIODS[operator][:period]
  period_of_time = PERIODS[operator][:period_of_time] || period
  to_date = PERIODS[operator][: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?(operator) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 64

def has_previous_interval?(operator)
  DATE_OPERATORS_HAVING_PREVIOUS_INTERVAL.include? operator
end

#is_date_operator?(operator) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 60

def is_date_operator?(operator)
  DATE_OPERATORS.include? operator
end

#to_client_timezone(date) ⇒ Object


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# File 'app/services/forest_liana/operator_date_interval_parser.rb', line 68

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