Separated formatting

src/formatting.rs

@@ -0,0 +1,120 @@
+use crate::types::{ActivePosition, WatchListItem};
+
+pub trait Formatted {
+    fn get_formatted(&self) -> Vec<String>;
+}
+
+impl Formatted for WatchListItem {
+    fn get_formatted(&self) -> Vec<String> {
+        vec![
+            format!("\x1b[35m{}\x1b[0m", self.symbol.to_string()),
+            format_f64(self.price),
+            format!(
+                "{} {}",
+                if self.trend.is_sign_positive() {
+                    "\x1b[32m▲\x1b[0m"
+                } else {
+                    "\x1b[31m▼\x1b[0m"
+                },
+                format_f64(self.trend.abs())
+            ),
+        ]
+    }
+}
+
+impl Formatted for ActivePosition {
+    fn get_formatted(&self) -> Vec<String> {
+        vec![
+            format!("\x1b[35m{}\x1b[0m", self.symbol.to_string()),
+            format_f64(self.amount),
+            format!(
+                "{} {}",
+                if self.profit.is_sign_positive() {
+                    "\x1b[32m▲\x1b[0m"
+                } else {
+                    "\x1b[31m▼\x1b[0m"
+                },
+                format_f64(self.profit.abs())
+            ),
+        ]
+    }
+}
+
+impl<T: Formatted> Formatted for Vec<T> {
+    fn get_formatted(&self) -> Vec<String> {
+        let mut output = Vec::new();
+
+        let rows: Vec<Vec<String>> = self.iter().map(|v| v.get_formatted()).collect();
+
+        if rows.is_empty() {
+            return output;
+        }
+
+        let column_count = rows.iter().map(|r| r.len()).max().unwrap_or(0);
+
+        let mut widths = vec![0; column_count];
+
+        for row in &rows {
+            for (i, col) in row.iter().enumerate() {
+                widths[i] = widths[i].max(col.len());
+            }
+        }
+
+        for row in rows {
+            let mut row_out = String::new();
+
+            for (col_idx, col) in row.iter().enumerate() {
+                let width = widths[col_idx];
+
+                row_out.push_str(&format!("{:>width$}", col, width = width));
+
+                if col_idx + 1 != row.len() {
+                    row_out.push_str("  ");
+                }
+            }
+
+            output.push(row_out);
+        }
+
+        output
+    }
+}
+
+pub fn apply_padding(mut items: Vec<String>) -> Vec<String> {
+    for item in &mut items {
+        item.insert(0, ' ');
+    }
+
+    items
+}
+
+pub fn format_f64(value: f64) -> String {
+    let val = value.to_string();
+    let parts: Vec<&str> = val.split('.').collect();
+
+    let int = parts[0].to_string();
+    let negative = int.starts_with('-');
+
+    let start = if negative { 1 } else { 0 };
+    let mut result = String::new();
+
+    for (i, c) in int[start..].chars().rev().enumerate() {
+        if i > 0 && i % 3 == 0 {
+            result.push(',');
+        }
+        result.push(c);
+    }
+
+    let mut formatted: String = result.chars().rev().collect();
+
+    if negative {
+        formatted.insert(0, '-');
+    }
+
+    if parts.len() > 1 {
+        formatted.push('.');
+        formatted.push_str(parts[1]);
+    }
+
+    formatted
+}