Tuya: add cover component (#2279)

esphome/components/tuya/cover/tuya_cover.cpp

@@ -0,0 +1,58 @@
+#include "esphome/core/log.h"
+#include "tuya_cover.h"
+
+namespace esphome {
+namespace tuya {
+
+static const char *const TAG = "tuya.cover";
+
+void TuyaCover::setup() {
+  this->value_range_ = this->max_value_ - this->min_value_;
+  if (this->position_id_.has_value()) {
+    this->parent_->register_listener(*this->position_id_, [this](const TuyaDatapoint &datapoint) {
+      auto pos = float(datapoint.value_uint - this->min_value_) / this->value_range_;
+      if (this->invert_position_)
+        pos = 1.0f - pos;
+      this->position = pos;
+      this->publish_state();
+    });
+  }
+}
+
+void TuyaCover::control(const cover::CoverCall &call) {
+  if (call.get_stop()) {
+    auto pos = this->position;
+    if (this->invert_position_)
+      pos = 1.0f - pos;
+    auto position_int = static_cast<uint32_t>(pos * this->value_range_);
+    position_int = position_int + this->min_value_;
+
+    parent_->set_integer_datapoint_value(*this->position_id_, position_int);
+  }
+  if (call.get_position().has_value()) {
+    auto pos = *call.get_position();
+    if (this->invert_position_)
+      pos = 1.0f - pos;
+    auto position_int = static_cast<uint32_t>(pos * this->value_range_);
+    position_int = position_int + this->min_value_;
+
+    parent_->set_integer_datapoint_value(*this->position_id_, position_int);
+  }
+
+  this->publish_state();
+}
+
+void TuyaCover::dump_config() {
+  ESP_LOGCONFIG(TAG, "Tuya Cover:");
+  if (this->position_id_.has_value())
+    ESP_LOGCONFIG(TAG, "   Position has datapoint ID %u", *this->position_id_);
+}
+
+cover::CoverTraits TuyaCover::get_traits() {
+  auto traits = cover::CoverTraits();
+  traits.set_supports_position(true);
+  return traits;
+}
+
+}  // namespace tuya
+}  // namespace esphome