HabitatMap/AirCasting

# files format:
# locations aqsid|parameter|site_code|site_name|status|agency_id|agency_name|epa_region|latitude|longitude|elevation|timezone|country|msa_code|msa_name|state_code|state_name|county_code|county_name
# measurements date|time|aqsid|location|timezone|parameter|unit|value|attribution
# documentation:
# locations https://docs.airnowapi.org/docs/MonitoringSiteFactSheet.pdf
# measurements https://docs.airnowapi.org/docs/HourlyDataFactSheet.pdf

class AirNow::ParseFiles
  def self.parse_locations(data)
    data.split("\n").map do |line|
      parts = line.split('|')
      {
        parameter: parts[1],
        aqsid: parts[0],
        location: parts[3],
        latitude: parts[8].to_f,
        longitude: parts[9].to_f,
      }
    end
  end

  def self.parse_hourly_data(data, locations)
    data.split("\n").map do |line|
      parts = line.split('|').map(&:strip)

      location = locations.find { |loc| parts[2] == (loc[:aqsid]) }
      next unless location

      {
        date: parts[0],
        time: parts[1],
        location: location[:location],
        time_zone: parts[4],
        parameter: parts[5],
        value: parts[7].to_f,
        latitude: location[:latitude],
        longitude: location[:longitude],
      }
    end.compact
  end
end