Automatically operate the bath light and fan

automation_bath.rb

require "influxdb"

def current_value(field,location,device="none")
    host = 'hostname.local'
    database = 'home-sensor'
    influxdb = InfluxDB::Client.new database,:host => host

    # query
    result = influxdb.query "select value from #{field} where location='#{location}' order by desc limit 1 tz('Japan')"

    begin
      time, value = result[0]["values"][0]["time"], result[0]["values"][0]["value"]
    rescue Exception => e
      puts "[ERROR] Not found data in influxdb"
      puts "result:"
      puts result
      exit!
    end

    return time, value

end

# Bath conditions
def continuous_using?
  # post query
  time, door_open_percent = current_value("ocaction", "5")

  # last door open or close time
  y, m, day, hur, min, sec = time.split(/-|T| |:|\./)
  last_oc_time = Time.new(y, m, day, hur, min, sec)

  if (Time.now - last_oc_time) > ($suspend_min * 60)
    # more than 5 minutes passed since the last action
    # door open or close
    return door_open_percent == 0 ?  true  :  false
  else
    # less than 5 minutes from last action
    return false
  end
  
end

def not_continuous_using?
  # post query
  time, door_open_percent = current_value("ocaction", "5")

  # last door open or close time
  y, m, day, hur, min, sec = time.split(/-|T| |:|\./)
  last_oc_time = Time.new(y, m, day, hur, min, sec)

  if (Time.now - last_oc_time) > ($suspend_min * 60)
    # more than 5 minutes passed since the last action
    # door open or close
    return door_open_percent == 0 ?  false  :  true
  else
    # less than 5 minutes from last action
    return false
  end
  
end

def using?
  door_open_percent = `#{CMD} Get Door_5`.to_i
  return door_open_percent == 0 ?  true  :  false
end

def dark?
  lux = `#{CMD} Get LightSensor_5`.to_i
  return lux < 200 ?  true  :  false
end

def bright?
  lux = `#{CMD} Get LightSensor_5`.to_i
  return lux > 700 ?  true  :  false
end

def hot?
  temperature = `#{CMD} Get Temperature_5`.to_i
  return temperature >= 30 ?  true  :  false
end

def cold?
  temperature = `#{CMD} Get Temperature_5`.to_i
  return temperature <= 15 ?  true  :  false
end

def damp?
  humidity = `#{CMD} Get Humidity_5`.to_i
  return humidity >= 70 ?  true  :  false
end

def dry?
  humidity = `#{CMD} Get Humidity_5`.to_i
  return humidity <= 47 ?  true  :  false
end

def fan_enable?
  fan = `#{CMD} Get Fan_5`.to_i
  return fan == 1 ?  true  :  false
end

def light_enable?
  light = `#{CMD} Get Light_5`.to_i
  return light == 1 ?  true  :  false
end

def conditions_test

  print "using?\t"
  puts using?

  print "continuous using?\t"
  puts continuous_using?

  print "not continuous using?\t"
  puts not_continuous_using?

  print "dark?\t"
  puts dark?

  print "bright?\t"
  puts bright?

  print "hot?\t"
  puts hot?

  print "cold?\t"
  puts cold?

  print "damp?\t"
  puts damp?

  print "dry?\t"
  puts dry?

  print "fan_enable?\t"
  puts fan_enable?

  print "light_enable?\t"
  puts light_enable?

end

# Bath device
def light (a=true, rule_id)
  if a && !light_enable?
    `#{CMD} Set Light_5 On true`
    log(rule_id, "LIGHT_ON")
  elsif !a && light_enable?
    `#{CMD} Set Light_5 On false`
    log(rule_id, "LIGHT_OFF")
  end
end

def fan (a=true, rule_id)
  if a && !fan_enable?
    `#{CMD} Set Fan_5 On true`
    log(rule_id, "FAN_ON")
  elsif !a && fan_enable?
    `#{CMD} Set Fan_5 On false`
    log(rule_id, "FAN_OFF")
  end
end

# Log
def log (rule_id, operation)
  m = Time.now.to_s + ", " + rule_id.to_s + ", " + operation
  puts m
  open("#{WD}/auto_bath.log", "a"){|f|f.puts m}

  inflxu_send(rule_id, operation)
end

def inflxu_send (rule_id, operation)
  `curl -i -XPOST '#{INFLUX_ADD}/write?db=home-sensor' --data-binary 'automation,operation=#{operation},location=5 value=#{rule_id}'`
end

WD = "~/.homebridge"
CMD = "ruby #{WD}/cmd4.rb"
VERSION = "20181017"
INFLUX_ADD = "http://hostname.local:8086"

$suspend_min = 5

conditions_test if ARGV[0] == "c"

# Automation rule
light(true, 1) if using? && dark?
light(false, 2) if not_continuous_using? && light_enable?
fan(true, 3) if using? && hot?
fan(false, 4) if using? && !hot?
fan(true, 5) if !using? && damp?
fan(false, 6) if !using? && dry?