use sunrise/sunset times to control Hue lights

flux

@@ -0,0 +1,33 @@
+#!/usr/bin/env ruby 
+
+require 'date'
+require 'json'
+
+TIMES = JSON.parse(File.read(File.expand_path('../sun-yyj.json', __FILE__)))['sunsets']
+SETTINGS = {
+  'twilight' => 'sunrise',
+  'sunrise'  => 'morning',
+  'sunset'  => 'sunset',
+  'night'  => 'night',
+}
+
+date = Date.today
+month = date.month.to_s
+day = date.day.to_s
+if times = TIMES[month][day]
+  time = Time.now
+  hour, min = time.hour, time.min
+  padded_min = min < 10 ? "0#{min}" : "#{min}"
+  now = "#{hour}:#{padded_min}"
+  if found = times.detect { |k, v| now == v }
+    name = found[0]
+    if setting = SETTINGS[name]
+      puts "lights #{setting} - 3000"
+      exec "lights #{setting} - 3000"
+    else
+      raise "Unsure how to change lights for \"#{name}\""
+    end
+  end
+else
+  raise "Cannot find today's date (#{date}) in times: #{times.inspect}"
+end

lights

@@ -36,10 +36,16 @@ TEMPS = {
 TEMPS['sunny'] = TEMPS['bright']
 TEMPS['overcast'] = TEMPS['cloudy']
 
-setting = ARGV.first
+setting = ARGV[0]
+brightness = ARGV[1] || 80
+transition = ARGV[2]
 Huemote.set_ip '192.168.0.2'
 lights = LIGHT_NAMES.map { |name| Huemote::Light.find(name) }
 
+def kelvin_to_mireds(temp)
+  [[1_000_000 / temp, 154].max, 500].min
+end
+
 case setting
 when 'off'
   lights.each(&:off!)
@@ -48,17 +54,20 @@ when 'on'
 else
   lights.each(&:on!)
   attrs = TEMPS[setting] || {
-    brightness: (ARGV[1] || 80).to_i,
     temp: setting.to_i,
+    brightness: brightness.to_i,
   }
+  if transition
+    # tenths of a second
+    attrs[:transitiontime] = transition.to_i
+  end
   if attrs
-    lights.each do |l|
-      if attrs[:brightness]
-        l.brightness(attrs[:brightness])
-      end
+    attrs[:bri] = attrs.delete(:brightness)
     if attrs[:temp]
-        l.kelvin(attrs[:temp])
+      attrs[:ct] = kelvin_to_mireds(attrs.delete(:temp))
     end
+    lights.each do |l|
+      l.send(:set!, attrs)
     end
   else
     puts "Unknown setting: #{setting}"