day02 task2 - still poor but working 😓

day02/src/main.rs

@@ -3,8 +3,9 @@ use std::io::{self, BufRead};
 use std::path::Path;
 
 fn main() {
-    let mut depth = 0;
-    let mut pos_h = 0;
+    let mut depth: i32 = 0;
+    let mut pos_h: i32 = 0;
+    let mut aim: i32 = 0;
     if let Ok(lines) = read_lines("./data/input") {
         for line in lines {
             if let Ok(str) = line {
@@ -12,21 +13,27 @@ fn main() {
                 let direction = words[0];
                 let number = words[1].parse::<i32>().unwrap();
 
-                match direction {
-                    "down" => depth = depth + number,
-                    "up" => depth = depth - number,
-                    "forward" => pos_h = pos_h + number,
-                    _ => eprintln!("UNKNOWN!!!!!"),
-
+                if direction == "down" {
+                    aim += number;
+                } else if direction == "up" {
+                    aim -= number;
+                } else if direction == "forward" {
+                    depth += number * aim;
+                    pos_h += number;
+                } else {
+                    eprintln!("UNKNOWN!!!!!")
                 }
             }
         }
     }
-    println!("{}", depth * pos_h);
+    let result = depth * pos_h;
+    println!("{}", result);
 }
 
 fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
-where P: AsRef<Path>, {
+where
+    P: AsRef<Path>,
+{
     let file = File::open(filename)?;
     Ok(io::BufReader::new(file).lines())
 }