refactored main function

- moved logger into its own file
- moved code from main into its own function

src/feedback.rs

@@ -0,0 +1,70 @@
+use log::error;
+use rppal::pwm::Channel;
+use std::error::Error;
+use tokio::join;
+
+use crate::{
+    buzzer::{Buzzer, GPIOBuzzer},
+    led::{SpiLed, StatusLed},
+};
+
+#[cfg(feature = "mock_pi")]
+use crate::mock::{MockBuzzer, MockLed};
+
+const PWM_CHANNEL_BUZZER: Channel = Channel::Pwm0; //PWM0 = GPIO18/Physical pin 12
+
+pub struct Feedback<B: Buzzer, L: StatusLed> {
+    buzzer: B,
+    led: L,
+}
+
+impl<B: Buzzer, L: StatusLed> Feedback<B, L> {
+    pub async fn success(&mut self) {
+        let (buzzer_result, led_result) =
+            join!(self.buzzer.beep_ack(), self.led.turn_green_on_1s());
+
+        buzzer_result.unwrap_or_else(|err| {
+            error!("Failed to buzz: {err}");
+        });
+
+        led_result.unwrap_or_else(|err| {
+            error!("Failed to set LED: {err}");
+        });
+    }
+
+    pub async fn failure(&mut self) {
+        let (buzzer_result, led_result) = join!(self.buzzer.beep_nak(), self.led.turn_red_on_1s());
+
+        buzzer_result.unwrap_or_else(|err| {
+            error!("Failed to buzz: {err}");
+        });
+
+        led_result.unwrap_or_else(|err| {
+            error!("Failed to set LED: {err}");
+        });
+    }
+}
+
+#[cfg(feature = "mock_pi")]
+pub type FeedbackImpl = Feedback<MockBuzzer, MockLed>;
+#[cfg(not(feature = "mock_pi"))]
+pub type FeedbackImpl = Feedback<GPIOBuzzer, SpiLed>;
+
+impl FeedbackImpl {
+    pub fn new() -> Result<Self, Box<dyn Error>> {
+        #[cfg(feature = "mock_pi")]
+        {
+            Ok(Feedback {
+                buzzer: MockBuzzer {},
+                led: MockLed {},
+            })
+        }
+        #[cfg(not(feature = "mock_pi"))]
+        {
+            Ok(Feedback {
+                buzzer: GPIOBuzzer::new(PWM_CHANNEL_BUZZER)?,
+                led: SpiLed::new()?,
+            })
+        }
+    }
+}