feat: enhance gateway channel management with serial command handling and gateway ID updates

Signed-off-by: Tony <tonylu@tony-cloud.com>

components/dali_domain/include/dali_domain.hpp

@@ -192,6 +192,8 @@ class DaliDomainService {
                        std::optional<uint8_t> level) const;
   bool applyAddressSettings(uint8_t gateway_id, int short_address,
                             const DaliAddressSettingsSnapshot& settings) const;
+  std::optional<uint8_t> gatewayIdForChannelIndex(uint8_t channel_index) const;
+  bool updateChannelGatewayId(uint8_t channel_index, uint8_t gateway_id);
   bool updateChannelName(uint8_t gateway_id, std::string_view name);
   bool allocateAllAddr(uint8_t gateway_id, int start_address = 0) const;
   void stopAllocAddr(uint8_t gateway_id) const;
@@ -212,6 +214,7 @@ class DaliDomainService {
   DaliChannel* findChannelByGateway(uint8_t gateway_id);
   const DaliChannel* findChannelByGateway(uint8_t gateway_id) const;
   DaliChannel* findChannelByIndex(uint8_t channel_index);
+  const DaliChannel* findChannelByIndex(uint8_t channel_index) const;
   const DaliChannel* findChannelByHardwareBus(uint8_t bus_id) const;
   bool hasSerialPort(int uart_port) const;
   esp_err_t startSerialRxTask(DaliChannel& channel);

components/dali_domain/src/dali_domain.cpp

@@ -635,6 +635,31 @@ std::vector<DaliChannelInfo> DaliDomainService::channelInfo() const {
   return info;
 }
 
+std::optional<uint8_t> DaliDomainService::gatewayIdForChannelIndex(uint8_t channel_index) const {
+  const auto* channel = findChannelByIndex(channel_index);
+  if (channel == nullptr) {
+    return std::nullopt;
+  }
+  return channel->config.gateway_id;
+}
+
+bool DaliDomainService::updateChannelGatewayId(uint8_t channel_index, uint8_t gateway_id) {
+  auto* channel = findChannelByIndex(channel_index);
+  if (channel == nullptr) {
+    return false;
+  }
+  for (const auto& other : channels_) {
+    if (other.get() != channel && other->config.gateway_id == gateway_id) {
+      return false;
+    }
+  }
+  channel->config.gateway_id = gateway_id;
+  if (channel->dali != nullptr) {
+    channel->dali = std::make_unique<Dali>(*channel->comm, gateway_id, channel->config.name);
+  }
+  return true;
+}
+
 void DaliDomainService::addRawFrameSink(std::function<void(const DaliRawFrame& frame)> sink) {
   if (!sink) {
     return;
@@ -1674,6 +1699,15 @@ DaliDomainService::DaliChannel* DaliDomainService::findChannelByIndex(uint8_t ch
   return it == channels_.end() ? nullptr : it->get();
 }
 
+const DaliDomainService::DaliChannel* DaliDomainService::findChannelByIndex(
+    uint8_t channel_index) const {
+  const auto it = std::find_if(channels_.begin(), channels_.end(),
+                               [channel_index](const auto& channel) {
+                                 return channel->config.channel_index == channel_index;
+                               });
+  return it == channels_.end() ? nullptr : it->get();
+}
+
 const DaliDomainService::DaliChannel* DaliDomainService::findChannelByHardwareBus(
     uint8_t bus_id) const {
   const auto it = std::find_if(channels_.begin(), channels_.end(), [bus_id](const auto& channel) {