import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import automation
from esphome.components import output, sensor
from esphome.const import (
  CONF_ID,
  CONF_TRIGGER_ID
)


DEPENDENCIES=["sensor"]

chlorine_pump_ns = cg.esphome_ns.namespace('chlorine_pump')
ChlorinePump = chlorine_pump_ns.class_('ChlorinePump', cg.Component)

CONF_SENSOR = "sensor"
CONF_PUMP_OUT = "pump"
CONF_PUMP_CYCLE_TIME = "cycle_time"
CONF_PUMP_PROPORTIONAL_BAND = "proportional_band"
CONF_PUMP_VALUE = "on_pump_value"
CONF_CYCLE_START = "on_cycle_start"
CONF_DISABLE_CLOCK="disable_clock"
CONF_TARGET="target"
CONF_TARGET_LAMBDA="get_target"
CONF_PUMP_TIME_DIVIDER = "pump_time_divider"

def to_proportional_band(value):
  try:
    value = int(value)
  except (TypeError, ValueError):
    # pylint: disable=raise-missing-from
    raise cv.Invalid(f"")
  return cv.one_of(20, 50, 100, 150, 200, 300, 400)(value)

ChlorSensorOutputTrigger = chlorine_pump_ns.class_(
  "ChlorSensorOutputTrigger", automation.Trigger.template(cg.bool_, cg.int_)
)
ChlorSensorCycleTrigger = chlorine_pump_ns.class_(
  "ChlorSensorCycleTrigger", automation.Trigger.template(cg.int_, cg.int_)
)

PrimeAction = chlorine_pump_ns.class_("ChlorinePrime", automation.Action)
StartAction = chlorine_pump_ns.class_("ChlorineStart", automation.Action)
StopAction = chlorine_pump_ns.class_("ChlorineStop", automation.Action)
SetTargetAction = chlorine_pump_ns.class_("ChlorineSetTarget", automation.Action)
ManualDoseAction = chlorine_pump_ns.class_("ChlorineDose", automation.Action)

def validate_config(config):
  if (config.get(CONF_TARGET_LAMBDA, None) is not None) is not (config.get(CONF_TARGET, None) not in config):
    raise cv.Invalid("Either a fixed target or an get_target lambda must be set to get a target")
  return config

CONFIG_SCHEMA = cv.All(
  cv.COMPONENT_SCHEMA.extend({
    cv.GenerateID(): cv.declare_id(ChlorinePump),
    cv.Required(CONF_PUMP_OUT): cv.use_id(output.BinaryOutput),
    cv.Optional(CONF_SENSOR): cv.use_id(sensor.Sensor),
    cv.Optional(CONF_PUMP_CYCLE_TIME, default=360): cv.int_range(min=30, max=1400),
    cv.Optional(CONF_PUMP_PROPORTIONAL_BAND, default=200): to_proportional_band,
    cv.Optional(CONF_DISABLE_CLOCK, default=False): cv.boolean,
    cv.Optional(CONF_TARGET): cv.int_range(300, 1400),
    cv.Optional(CONF_PUMP_TIME_DIVIDER, 2): cv.float_range(1, 5),
    cv.Optional(CONF_TARGET_LAMBDA, 2): cv.templatable(cv.float_),
    cv.Optional(CONF_PUMP_VALUE): automation.validate_automation({
        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ChlorSensorOutputTrigger),
      }
    ),
    cv.Optional(CONF_CYCLE_START): automation.validate_automation({
        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ChlorSensorCycleTrigger),
      }
    ),
  }),
  validate_config
)



ACTION_SCHEMA = cv.Schema({
  cv.GenerateID(): cv.use_id(ChlorinePump)
})

@automation.register_action("chlorine_pump.prime", PrimeAction, ACTION_SCHEMA)
async def prime_action_to_code(config, action_id, template_arg, args):
  paren = await cg.get_variable(config[CONF_ID])
  return cg.new_Pvariable(action_id, template_arg, paren)

@automation.register_action("chlorine_pump.start", StartAction, ACTION_SCHEMA)
async def start_action_to_code(config, action_id, template_arg, args):
  paren = await cg.get_variable(config[CONF_ID])
  return cg.new_Pvariable(action_id, template_arg, paren)

@automation.register_action("chlorine_pump.stop", StopAction, ACTION_SCHEMA)
async def stop_action_to_code(config, action_id, template_arg, args):
  paren = await cg.get_variable(config[CONF_ID])
  return cg.new_Pvariable(action_id, template_arg, paren)

@automation.register_action("chlorine_pump.manual_dose", StopAction, ACTION_SCHEMA)
async def stop_action_to_code(config, action_id, template_arg, args):
  paren = await cg.get_variable(config[CONF_ID])
  return cg.new_Pvariable(action_id, template_arg, paren)

@automation.register_action("chlorine_pump.set_target", SetTargetAction, ACTION_SCHEMA.extend({
  cv.Required(CONF_TARGET): cv.templatable(cv.float_),
}))
async def number_set_to_code(config, action_id, template_arg, args):
    paren = await cg.get_variable(config[CONF_ID])
    var = cg.new_Pvariable(action_id, template_arg, paren)
    template_ = await cg.templatable(config[CONF_TARGET], args, float)
    cg.add(var.set_value(template_))
    return var

async def to_code(config):
  var = cg.new_Pvariable(config[CONF_ID])
  await cg.register_component(var, config)
  #yield mqtt.register_mqtt_component(var, config)
  
  #btnReset = yield cg.gpio_pin_expression(config[CONF_SENSOR_PIN])
  #cg.add(var.set_input_pin(btnReset))
  
  if CONF_SENSOR in config:
    sensor = await cg.get_variable(config[CONF_SENSOR])
    cg.add(var.set_sensor(sensor))
  
  pump_out = await cg.get_variable(config[CONF_PUMP_OUT])
  cg.add(var.set_pump_out(pump_out))
  
  cg.add(var.set_cycle_time(config[CONF_PUMP_CYCLE_TIME])) # Needs be configured before sensor
  
  cg.add(var.disable_clock(config[CONF_DISABLE_CLOCK]))
  #cycle_time = yield cg.get_variable(config[CONF_PUMP_CYCLE_TIME])
  
  #prop_band = yield cg.get_variable(config[CONF_PUMP_PROPORTIONAL_BAND])
  cg.add(var.set_prop_band(config[CONF_PUMP_PROPORTIONAL_BAND]))
  
  #cg.add(var.set_state(config[CONF_STATE]))
  if CONF_TARGET not in config:
    template_ = await cg.templatable(config[CONF_TARGET_LAMBDA], [], float)
    cg.add(var.set_target_lambda(template_))
  else:
    cg.add(var.set_target(config[CONF_TARGET]))
  
  
  if CONF_PUMP_VALUE in config:
    for conf in config.get(CONF_PUMP_VALUE, []):
      trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
      await automation.build_automation(trigger, [(bool, "pState"), (int, "pTime")], conf)
      
    for conf in config.get(CONF_CYCLE_START, []):
      trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
      await automation.build_automation(trigger, [(int, "tOn"), (int, "tOff")], conf)