Start day 7 part 1

day7/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day7"
+version = "0.1.0"

day7/Cargo.toml

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+[package]
+name = "day7"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day7/src/main.rs

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+use std::collections::HashMap;
+
+const MAX_DIR_SIZE: u128 = 100_000;
+
+#[derive(Debug)]
+struct File {
+    name: String,
+    size: u128,
+}
+
+impl File {
+    fn new<T: ToString + ?Sized>(raw_line: &T) -> Self {
+        let raw = raw_line.to_string();
+        let parts: Vec<&str> = raw.split(' ').collect();
+        let size = parts[0].parse::<u128>().unwrap();
+        let name = parts[1].to_string();
+
+        File { name, size }
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+#[derive(Debug)]
+struct Dir {
+    parent: String,
+    name: String,
+    files: Vec<File>,
+    dirs: Vec<String>,
+}
+
+impl Dir {
+    fn new<T: ToString + ?Sized>(parent: &T, name: &T) -> Self {
+        Dir {
+            parent: parent.to_string(),
+            name: name.to_string(),
+            files: Vec::new(),
+            dirs: Vec::new(),
+        }
+    }
+
+    fn get_loose_files_size(&self) -> u128 {
+        self.files
+            .iter()
+            .map(|file| file.size)
+            .reduce(|accum, item| accum + item)
+            .unwrap()
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+struct DirMap {
+    current_path: String,
+    map: HashMap<String, Dir>,
+}
+
+impl DirMap {
+    fn new() -> Self {
+        DirMap {
+            current_path: "/".to_string(),
+            map: HashMap::new(),
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+fn main() {
+    let file_str = include_str!("input.txt");
+    let path_map = DirMap::new();
+}