defmodule Weather do
	def start do
		spawn(fn -> loop(nil) end)
	end

	defp loop(data) do
		new_data = receive do
			message -> process(message, data)
		end
		loop(new_data)
	end

	defp process({:weather, location}, _data) do
		HTTPoison.get! "https://api.openweathermap.org/data/2.5/weather?q=#{location}&appid=f4a0eee4b5e6bc6d8cbb956e511528de&units=metric"
	end

	defp process({:value, client}, data) do
		send(client, {:response, data})
		data
	end

	defp show_result(server) do
		send(server, {:value, self()})
		receive do
			{:response, data} -> data
		end
	end

	def get_weather(server, location) do
		send(server, {:weather ,location})
		show_result(server)
	end
end