feat: 初步增加 Windows 支持

src/atx/serial_relay.rs

@@ -0,0 +1,141 @@
+use async_trait::async_trait;
+use std::io::Write;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::{Arc, Mutex};
+use std::time::Duration;
+use tokio::time::sleep;
+use tracing::{debug, info};
+
+use super::traits::{validate_serial_config, AtxKeyBackend, SharedSerialHandle};
+use super::types::AtxKeyConfig;
+use crate::error::{AppError, Result};
+
+pub struct SerialRelayBackend {
+    config: AtxKeyConfig,
+    serial_handle: Mutex<Option<SharedSerialHandle>>,
+    initialized: AtomicBool,
+}
+
+impl SerialRelayBackend {
+    pub fn new(config: AtxKeyConfig) -> Self {
+        Self {
+            config,
+            serial_handle: Mutex::new(None),
+            initialized: AtomicBool::new(false),
+        }
+    }
+
+    pub fn new_with_shared_serial(config: AtxKeyConfig, serial_handle: SharedSerialHandle) -> Self {
+        Self {
+            config,
+            serial_handle: Mutex::new(Some(serial_handle)),
+            initialized: AtomicBool::new(false),
+        }
+    }
+
+    pub fn open_shared_serial(device: &str, baud_rate: u32) -> Result<SharedSerialHandle> {
+        let port = serialport::new(device, baud_rate)
+            .timeout(Duration::from_millis(100))
+            .open()
+            .map_err(|e| AppError::Internal(format!("Serial port open failed: {}", e)))?;
+        Ok(Arc::new(Mutex::new(port)))
+    }
+
+    fn send_command(&self, on: bool) -> Result<()> {
+        let channel = u8::try_from(self.config.pin).map_err(|_| {
+            AppError::Config(format!(
+                "Serial relay channel {} exceeds max {}",
+                self.config.pin,
+                u8::MAX
+            ))
+        })?;
+
+        let state = if on { 1 } else { 0 };
+        let checksum = 0xA0u8.wrapping_add(channel).wrapping_add(state);
+        let cmd = [0xA0, channel, state, checksum];
+
+        let serial_handle = self
+            .serial_handle
+            .lock()
+            .unwrap()
+            .as_ref()
+            .cloned()
+            .ok_or_else(|| AppError::Internal("Serial relay not initialized".to_string()))?;
+        let mut port = serial_handle.lock().unwrap();
+
+        port.write_all(&cmd)
+            .map_err(|e| AppError::Internal(format!("Serial relay write failed: {}", e)))?;
+        port.flush()
+            .map_err(|e| AppError::Internal(format!("Serial relay flush failed: {}", e)))?;
+
+        Ok(())
+    }
+}
+
+#[async_trait]
+impl AtxKeyBackend for SerialRelayBackend {
+    async fn init(&mut self) -> Result<()> {
+        validate_serial_config(&self.config)?;
+
+        info!(
+            "Initializing Serial relay ATX backend on {} channel {}",
+            self.config.device, self.config.pin
+        );
+
+        let existing_handle = self.serial_handle.lock().unwrap().as_ref().cloned();
+        if existing_handle.is_none() {
+            let shared = Self::open_shared_serial(&self.config.device, self.config.baud_rate)?;
+            *self.serial_handle.lock().unwrap() = Some(shared);
+        }
+
+        self.send_command(false)?;
+        self.initialized.store(true, Ordering::Relaxed);
+
+        debug!(
+            "Serial relay channel {} configured successfully",
+            self.config.pin
+        );
+        Ok(())
+    }
+
+    async fn pulse(&self, duration: Duration) -> Result<()> {
+        if !self.is_initialized() {
+            return Err(AppError::Internal(
+                "Serial relay not initialized".to_string(),
+            ));
+        }
+
+        info!(
+            "Pulse serial relay on {} pin {}",
+            self.config.device, self.config.pin
+        );
+        self.send_command(true)?;
+        sleep(duration).await;
+        self.send_command(false)?;
+        Ok(())
+    }
+
+    async fn shutdown(&mut self) -> Result<()> {
+        if !self.is_initialized() {
+            return Ok(());
+        }
+
+        let _ = self.send_command(false);
+        *self.serial_handle.lock().unwrap() = None;
+        self.initialized.store(false, Ordering::Relaxed);
+        Ok(())
+    }
+
+    fn is_initialized(&self) -> bool {
+        self.initialized.load(Ordering::Relaxed)
+    }
+}
+
+impl Drop for SerialRelayBackend {
+    fn drop(&mut self) {
+        if self.is_initialized() {
+            let _ = self.send_command(false);
+        }
+        *self.serial_handle.lock().unwrap() = None;
+    }
+}