Add new component for Tuya dimmers (#743)

* Add new component for Tuya dimmers

* Update code

* Class naming

* Log output

* Fixes

* Lint

* Format

* Fix test

* log setting datapoint values

* remove in_setup_ and fix datapoint handling


Co-authored-by: Samuel Sieb <samuel@sieb.net>
Co-authored-by: Otto Winter <otto@otto-winter.com>

esphome/components/tuya/light/__init__.py

@@ -0,0 +1,38 @@
+from esphome.components import light
+import esphome.config_validation as cv
+import esphome.codegen as cg
+from esphome.const import CONF_OUTPUT_ID, CONF_MIN_VALUE, CONF_MAX_VALUE
+from .. import tuya_ns, CONF_TUYA_ID, Tuya
+
+DEPENDENCIES = ['tuya']
+
+CONF_DIMMER_DATAPOINT = "dimmer_datapoint"
+CONF_SWITCH_DATAPOINT = "switch_datapoint"
+
+TuyaLight = tuya_ns.class_('TuyaLight', light.LightOutput, cg.Component)
+
+CONFIG_SCHEMA = light.BRIGHTNESS_ONLY_LIGHT_SCHEMA.extend({
+    cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(TuyaLight),
+    cv.GenerateID(CONF_TUYA_ID): cv.use_id(Tuya),
+    cv.Required(CONF_DIMMER_DATAPOINT): cv.uint8_t,
+    cv.Optional(CONF_SWITCH_DATAPOINT): cv.uint8_t,
+    cv.Optional(CONF_MIN_VALUE): cv.int_,
+    cv.Optional(CONF_MAX_VALUE): cv.int_,
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_OUTPUT_ID])
+    yield cg.register_component(var, config)
+    yield light.register_light(var, config)
+
+    if CONF_DIMMER_DATAPOINT in config:
+        cg.add(var.set_dimmer_id(config[CONF_DIMMER_DATAPOINT]))
+    if CONF_SWITCH_DATAPOINT in config:
+        cg.add(var.set_switch_id(config[CONF_SWITCH_DATAPOINT]))
+    if CONF_MIN_VALUE in config:
+        cg.add(var.set_min_value(config[CONF_MIN_VALUE]))
+    if CONF_MAX_VALUE in config:
+        cg.add(var.set_max_value(config[CONF_MAX_VALUE]))
+    paren = yield cg.get_variable(config[CONF_TUYA_ID])
+    cg.add(var.set_tuya_parent(paren))