Ruby script to fetch current weather data from Open-Meteo and post it to EmonCMS over HTTP

emoncms-post-open-meteo.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

#
# Script to fetch current weather data from Open-Meteo
# and post it to EmonCMS over HTTP
#
# By Nicholas Humfrey <njh.me>
#

require 'json'
require 'net/http'
require 'uri'

EMONCMS_URL = 'https://emoncms.org/input/post'
EMONCMS_API_KEY = 'xxx'

uri = URI.parse('https://api.open-meteo.com/v1/forecast')
uri.query = URI.encode_www_form(
  latitude: '51.51',
  longitude: '-0.15',
  current: 'temperature_2m,relative_humidity_2m,wind_speed_10m',
  timezone: 'GMT',
  timeformat: 'unixtime',
  format: 'json'
)

response = Net::HTTP.get(uri)
current = JSON.parse(response, symbolize_names: true)[:current]
data = {
  temperature: current[:temperature_2m],
  relative_humidity: current[:relative_humidity_2m],
  wind_speed: current[:wind_speed_10m]
}

p data
emoncms_uri = URI.parse(EMONCMS_URL)
res = Net::HTTP.post_form(emoncms_uri,
                          node: 'open-meteo',
                          time: current[:time].to_s,
                          apikey: EMONCMS_API_KEY,
                          fulljson: data.to_json)

puts res.body