module PatternQueryHelper

# File lib/pattern_query_helper.rb, line 20
def self.run_active_record_query(active_record_call, query_helpers, valid_columns=[], single_record=false)
  run_sql_query(active_record_call.model, active_record_call.to_sql, {}, query_helpers, valid_columns, single_record)
end

# File lib/pattern_query_helper.rb, line 10
def self.run_sql_query(model, query, query_params, query_helpers, valid_columns=[], single_record=false)
  if single_record
    single_record_sql_query(model, query, query_params, query_helpers, valid_columns)
  elsif query_helpers[:per_page] || query_helpers[:page]
    paginated_sql_query(model, query, query_params, query_helpers, valid_columns)
  else
    sql_query(model, query, query_params, query_helpers, valid_columns)
  end
end

# File lib/pattern_query_helper.rb, line 26
def self.paginated_sql_query(model, query, query_params, query_helpers, valid_columns)
  query_helpers = parse_helpers(query_helpers, valid_columns)

  query_config = {
    model: model,
    query: query,
    query_params: query_params,
    page: query_helpers[:pagination][:page],
    per_page: query_helpers[:pagination][:per_page],
    filter_string: query_helpers[:filters][:filter_string],
    filter_params: query_helpers[:filters][:filter_params],
    sort_string: query_helpers[:sorting],
  }

  data = PatternQueryHelper::Sql.sql_query(query_config)
  data = PatternQueryHelper::Associations.load_associations(data, query_helpers[:associations], query_helpers[:as_json])
  count = PatternQueryHelper::Sql.sql_query_count(data)
  data.map! { |d| d.except(PatternQueryHelper::Sql::QUERY_COUNT_COLUMN) } if query_config[:page] or query_config[:per_page]
  pagination = PatternQueryHelper::Pagination.create_pagination_payload(count, query_helpers[:pagination])

  {
    pagination: pagination,
    data: data
  }
end

# File lib/pattern_query_helper.rb, line 92
def self.parse_helpers(query_helpers, valid_columns)
  valid_columns_map = {}
  valid_columns.each do |c|
    valid_columns_map["#{c}"] = c
  end
  filtering = PatternQueryHelper::Filtering.create_filters(filters: query_helpers[:filter], valid_columns_map: valid_columns_map)
  sorting = PatternQueryHelper::Sorting.parse_sorting_params(query_helpers[:sort], valid_columns)
  associations = PatternQueryHelper::Associations.process_association_params(query_helpers[:include])
  pagination = PatternQueryHelper::Pagination.parse_pagination_params(query_helpers[:page], query_helpers[:per_page])
  as_json = query_helpers[:as_json]

  {
    filters: filtering,
    sorting: sorting,
    associations: associations,
    pagination: pagination,
    as_json: as_json
  }
end

# File lib/pattern_query_helper.rb, line 72
def self.single_record_sql_query(model, query, query_params, query_helpers, valid_columns)
  query_helpers = parse_helpers(query_helpers, valid_columns)

  query_config = {
    model: model,
    query: query,
    query_params: query_params,
    filter_string: query_helpers[:filters][:filter_string],
    filter_params: query_helpers[:filters][:filter_params],
    sort_string: query_helpers[:sorting],
  }

  data = PatternQueryHelper::Sql.single_record_query(query_config)
  data = PatternQueryHelper::Associations.load_associations(data, query_helpers[:associations], query_helpers[:as_json])

  {
    data: data
  }
end

# File lib/pattern_query_helper.rb, line 52
def self.sql_query(model, query, query_params, query_helpers, valid_columns)
  query_helpers = parse_helpers(query_helpers, valid_columns)

  query_config = {
    model: model,
    query: query,
    query_params: query_params,
    filter_string: query_helpers[:filters][:filter_string],
    filter_params: query_helpers[:filters][:filter_params],
    sort_string: query_helpers[:sorting],
  }

  data = PatternQueryHelper::Sql.sql_query(query_config)
  data = PatternQueryHelper::Associations.load_associations(data, query_helpers[:associations], query_helpers[:as_json])

  {
    data: data
  }
end