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# frozen_string_literal: true
module Gitlab
module Graphql
module Pagination
module Keyset
module Conditions
class BaseCondition
# @param [Arel::Table] arel_table for the relation being ordered
# @param [Array<OrderInfo>] order_list of extracted orderings
# @param [Array] values from the decoded cursor
# @param [Array<String>] operators determining sort comparison
# @param [Symbol] before_or_after indicates whether we want
# items :before the cursor or :after the cursor
def initialize(arel_table, order_list, values, operators, before_or_after)
@arel_table = arel_table
@order_list = order_list
@values = values
@operators = operators
@before_or_after = before_or_after
@before_or_after = :after unless [:after, :before].include?(@before_or_after)
end
def build
raise NotImplementedError
end
private
attr_reader :arel_table, :order_list, :values, :operators, :before_or_after
def table_condition(order_info, value, operator)
if order_info.named_function
target = order_info.named_function
if target.try(:name)&.casecmp('lower') == 0
value = value&.downcase
end
else
target = arel_table[order_info.attribute_name]
end
case operator
when '>'
target.gt(value)
when '<'
target.lt(value)
when '='
target.eq(value)
when 'is_null'
target.eq(nil)
when 'is_not_null'
target.not_eq(nil)
end
end
end
end
end
end
end
end
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