Restructure printer code

showbits-thermal-printer/src/drawer.rs

@@ -0,0 +1,104 @@
+use tokio::sync::mpsc;
+
+use crate::printer::Printer;
+
+pub enum Command {
+    Stop,
+    Rip,
+    Test,
+    Text(String),
+    ChatMessage { username: String, content: String },
+}
+
+pub struct Drawer {
+    rx: mpsc::Receiver<Command>,
+    printer: Printer,
+}
+
+impl Drawer {
+    pub fn new(rx: mpsc::Receiver<Command>, printer: Printer) -> Self {
+        Self { rx, printer }
+    }
+
+    pub fn run(&mut self) -> anyhow::Result<()> {
+        while let Some(command) = self.rx.blocking_recv() {
+            if matches!(command, Command::Stop) {
+                break;
+            };
+
+            self.on_command(command)?;
+        }
+        Ok(())
+    }
+
+    fn on_command(&mut self, command: Command) -> anyhow::Result<()> {
+        match command {
+            Command::Stop => {} // Already handled one level above
+            Command::Rip => self.printer.rip()?,
+            Command::Test => todo!(),
+            Command::Text(_) => todo!(),
+            Command::ChatMessage { username, content } => todo!(),
+        }
+        Ok(())
+    }
+
+    // fn on_test(&mut self) -> anyhow::Result<()> {
+    //     self.printer.init()?;
+
+    //     let x = 48; // bytes
+    //     let y = 48; // dots
+
+    //     let m = 0;
+    //     let x_l = x as u8;
+    //     let x_h = (x >> 8) as u8;
+    //     let y_l = y as u8;
+    //     let y_h = (y >> 8) as u8;
+    //     let mut command = vec![0x1D, b'v', b'0', m, x_l, x_h, y_l, y_h];
+    //     for _y in 0..y {
+    //         for _x in 0..x {
+    //             // command.push((x + y) as u8);
+    //             command.push(0b0000_0011);
+    //         }
+    //     }
+    //     self.printer.custom(&command)?;
+
+    //     self.printer.print()?;
+
+    //     Ok(())
+    // }
+
+    // fn on_rip(&mut self) -> anyhow::Result<()> {
+    //     self.printer.init()?.feeds(6)?.print()?;
+    //     Ok(())
+    // }
+
+    // fn on_text(&mut self, text: String) -> anyhow::Result<()> {
+    //     let text = util::sanitize(&text);
+    //     self.printer.init()?.write(&text)?.print()?;
+    //     Ok(())
+    // }
+
+    // fn on_chat_message(&mut self, username: String, content: String) -> anyhow::Result<()> {
+    //     let username = util::sanitize(&username);
+    //     let content = util::sanitize(&content);
+
+    //     let username = username
+    //         .chars()
+    //         .map(|c| if c.is_ascii_whitespace() { '_' } else { c })
+    //         .take(16)
+    //         .collect::<String>();
+
+    //     let content = content.chars().take(300).collect::<String>();
+
+    //     self.printer
+    //         .init()?
+    //         .reverse(true)?
+    //         .write(&username)?
+    //         .reverse(false)?
+    //         .write(" ")?
+    //         .writeln(&content)?
+    //         .print()?;
+
+    //     Ok(())
+    // }
+}