fix: try to better count lines

src/app.rs

@@ -19,22 +19,38 @@ impl History {
 	}
 
 	fn down(&mut self, x: u16) {
-		if self.count < self.height { return };
-		let delta = self.count - (self.height/2);
-		if self.offset >= delta { return }
-		self.offset += std::cmp::min(x, delta - self.offset);
+		if self.count < self.height {
+			self.offset = 0;
+			return;
+		}
+		let overflow = self.count - self.height;
+		if self.offset >= overflow { return }
+		self.offset += std::cmp::min(x, overflow - self.offset);
 	}
 
 	fn recalculate(&mut self) {
 		self.count = 0;
 		for line in &self.lines {
-			let len = (format!("{line}").len() as u16 / self.width) + 1;
+			let len = lines_needed_with_wrap(&format!("{line}"), self.width as usize) + 1;
 			self.count += len;
 		}
-		self.down(self.count);
+		self.down(self.count); // make sure we're to the bottom
 	}
 }
 
+fn lines_needed_with_wrap(txt: &str, width: usize) -> u16 {
+	let mut lines = 1;
+	let mut curr = 0;
+	for word in txt.split_whitespace() {
+		if curr + word.len() > width {
+			lines += 1;
+			curr = 0;
+		}
+		curr += word.len() + 1;
+	}
+	lines
+}
+
 
 pub async fn run<T: ratatui::backend::Backend>(term: &mut Terminal<T>, args: crate::Args) -> Result<(), Box<dyn std::error::Error>> {
 	let mut chat = Chat::register(&args.server, args.token).await?;