module NorthernPike

# File lib/northern_pike.rb, line 37
def self.easting_northing_to_lat_lng(easting:, northing:)
  location = GlobalConvert::Location.new(
    input: {
      projection: :osgb36,
      lon: easting,
      lat: northing
    },
    output: {
      projection: :wgs84
    }
  )
  { lat: (location.lat * 180 / Math::PI), lng: (location.lon * 180 / Math::PI) }
end

# File lib/northern_pike.rb, line 22
def self.lat_lng_to_os_ref(lat:, lng:)
    location = GlobalConvert::Location.new(
        input: {
            projection: :wgs84,
            lon: (Math::PI * lng.to_f / 180),
            lat: (Math::PI * lat.to_f / 180)
        },
        output: {
            projection: :osgb36
        }
    )

    { os_map_ref: OsMapRef::Location.for("#{location.lon},#{location.lat}").map_reference }
end

# File lib/northern_pike.rb, line 7
def self.os_ref_to_lat_lng(os_ref:)
    os_location = OsMapRef::Location.for os_ref
    location = GlobalConvert::Location.new(
        input: {
            projection: :osgb36,
            lon: os_location.easting.to_i,
            lat: os_location.northing.to_i
        },
        output: {
            projection: :wgs84
        }
    )
    { lat: (location.lat * 180 / Math::PI), lng: (location.lon * 180 / Math::PI) }
end