From 9caad95da239473f4e4014feabb3f82d909e5961 Mon Sep 17 00:00:00 2001
From: TuDatTr <tuan-dat.tran@tudattr.dev>
Date: Thu, 1 Dec 2022 22:17:40 +0100
Subject: [PATCH] Added solution for AoC 2022/1

Signed-off-by: TuDatTr <tuan-dat.tran@tudattr.dev>
---
 .gitignore                                  |    1 +
 2022/day-1_calorie_counting/.gitignore      |    1 +
 2022/day-1_calorie_counting/Cargo.lock      |  493 ++++
 2022/day-1_calorie_counting/Cargo.toml      |   16 +-
 2022/day-1_calorie_counting/input/input.txt | 2252 +++++++++++++++++++
 2022/day-1_calorie_counting/src/bin.rs      |   46 +
 2022/day-1_calorie_counting/src/cli.rs      |   10 +
 2022/day-1_calorie_counting/src/lib.rs      |   91 +
 2022/day-1_calorie_counting/src/main.rs     |    3 -
 README.md                                   |    7 +-
 create_readme.sh                            |    3 +
 11 files changed, 2914 insertions(+), 9 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 2022/day-1_calorie_counting/.gitignore
 create mode 100644 2022/day-1_calorie_counting/Cargo.lock
 create mode 100644 2022/day-1_calorie_counting/input/input.txt
 create mode 100644 2022/day-1_calorie_counting/src/bin.rs
 create mode 100644 2022/day-1_calorie_counting/src/cli.rs
 create mode 100644 2022/day-1_calorie_counting/src/lib.rs
 delete mode 100644 2022/day-1_calorie_counting/src/main.rs
 create mode 100755 create_readme.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c41cc9e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/2022/day-1_calorie_counting/.gitignore b/2022/day-1_calorie_counting/.gitignore
new file mode 100644
index 0000000..c41cc9e
--- /dev/null
+++ b/2022/day-1_calorie_counting/.gitignore
@@ -0,0 +1 @@
+/target
\ No newline at end of file
diff --git a/2022/day-1_calorie_counting/Cargo.lock b/2022/day-1_calorie_counting/Cargo.lock
new file mode 100644
index 0000000..3e363c8
--- /dev/null
+++ b/2022/day-1_calorie_counting/Cargo.lock
@@ -0,0 +1,493 @@
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diff --git a/2022/day-1_calorie_counting/Cargo.toml b/2022/day-1_calorie_counting/Cargo.toml
index 7aba72f..437b449 100644
--- a/2022/day-1_calorie_counting/Cargo.toml
+++ b/2022/day-1_calorie_counting/Cargo.toml
@@ -3,6 +3,20 @@ name = "day-1_calorie_counting"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[profile.release]
+lto = true
+codegen-units = 1
+debug = 1
+
+[lib]
+name = "calorie_counting_lib"
+path = "src/lib.rs"
+
+[[bin]]
+name = "calorie_counting_bin"
+path = "src/bin.rs"
 
 [dependencies]
+clap = {version = "4.0.22", features = ["derive"]}
+tracing = "0.1"
+tracing-subscriber = {version = "0.3.16", features = ["env-filter"]}
\ No newline at end of file
diff --git a/2022/day-1_calorie_counting/input/input.txt b/2022/day-1_calorie_counting/input/input.txt
new file mode 100644
index 0000000..46bf59e
--- /dev/null
+++ b/2022/day-1_calorie_counting/input/input.txt
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diff --git a/2022/day-1_calorie_counting/src/bin.rs b/2022/day-1_calorie_counting/src/bin.rs
new file mode 100644
index 0000000..3b70522
--- /dev/null
+++ b/2022/day-1_calorie_counting/src/bin.rs
@@ -0,0 +1,46 @@
+use calorie_counting_lib::*;
+use std::path::PathBuf;
+use std::collections::BinaryHeap;
+use clap::Parser;
+use tracing::{info, debug};
+use crate::cli::Cli;
+
+mod cli;
+
+/// Finds the Elf carrying the most Calories.
+/// Outputs how many total Calories that Elf is carrying.
+fn task_1a(input: &PathBuf) {
+    debug!("Running task 1a");
+    let file_path = input;
+    let content = calorie_counting_lib::read_file(file_path).unwrap();
+    let splits = content.split("\n\n");
+    
+    println!("{}", splits.map(|s| Elf::new(s).total_calories()).max().unwrap());
+}
+
+/// Finds the top three Elves carrying the most Calories.
+/// Outputs how many Calories those Elves are carrying in total.
+fn task_1b(input: &PathBuf) {
+    debug!("Running task 1b");
+    let file_path = input;
+    let content = calorie_counting_lib::read_file(file_path).unwrap();
+    let splits = content.split("\n\n");
+    let mut heap = splits.map(|s| Elf::new(s).total_calories()).collect::<BinaryHeap<_>>();
+
+    let mut top_three = Vec::new();
+    for _ in 0..3 {
+        if let Some(c) = heap.pop() {
+            top_three.push(c);
+        }
+    }
+    println!("{}", top_three.iter().sum::<u64>());
+}
+
+pub fn main() {
+    tracing_subscriber::fmt::init();
+    debug!("Running with debugging level logging");
+
+    let args = Cli::parse();
+    task_1a(&args.input);
+    task_1b(&args.input);
+}
diff --git a/2022/day-1_calorie_counting/src/cli.rs b/2022/day-1_calorie_counting/src/cli.rs
new file mode 100644
index 0000000..78647a6
--- /dev/null
+++ b/2022/day-1_calorie_counting/src/cli.rs
@@ -0,0 +1,10 @@
+use clap::Parser;
+use std::path::PathBuf;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about="CLI tool to output latency at a given gps location.", long_about = None)]
+pub struct Cli {
+    /// Path to the input file.
+    #[arg(short, long)]
+    pub input: PathBuf,
+}
diff --git a/2022/day-1_calorie_counting/src/lib.rs b/2022/day-1_calorie_counting/src/lib.rs
new file mode 100644
index 0000000..b540a04
--- /dev/null
+++ b/2022/day-1_calorie_counting/src/lib.rs
@@ -0,0 +1,91 @@
+use std::fs::File;
+use std::io::{Write, Read};
+use std::path::Path;
+use std::fmt;
+use tracing::{info, debug};
+
+pub fn create_file(path: &Path, content: String) {
+    debug!("Creating file");
+    let mut file = File::create(path).unwrap();
+    let _ = file.write_all(content.as_bytes());
+}
+
+pub fn read_file(path: &Path) -> std::io::Result<String> {
+    debug!("Reading file");
+    let mut file = File::open(path)?;
+    let mut contents = String::new();
+    let _ = file.read_to_string(&mut contents)?;
+    Ok(contents.trim().to_string())
+}
+
+#[derive(Debug, Clone)]
+pub struct Elf {
+    _input: String,
+    calories: Vec<u64>,
+}
+
+impl Elf {
+    pub fn new (input: &str) -> Self {
+        let cal: Vec<u64> = input.split('\n')
+            .map(|i| i.parse::<u64>().unwrap())
+            .collect();
+        Self { _input: input.to_string(), calories: cal }
+    }
+
+    pub fn total_calories(self) -> u64 {
+        self.calories.iter().sum()
+    }
+}
+
+impl fmt::Display for Elf{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "Elf: {:?}", self.calories)
+    }
+}
+
+// pub fn get_calories() -> std::io::Result<Vec<Elf>> {
+//     let content = read_file(Path::new("input.txt"))?;
+// }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs::remove_file;
+    use std::str::from_utf8;
+
+    const PATH: &str = "input.txt";
+    const CONTENT: &[u8; 55] = b"1000\n2000\n3000\n\n4000\n\n5000\n6000\n\n7000\n8000\n9000\n\n10000\n";
+
+    fn create_test_setup() {
+        let file_path = Path::new(PATH);
+        let original = CONTENT;
+        create_file(file_path, from_utf8(original).unwrap().to_string());
+    }
+
+    fn cleanup_test_setup() {
+        let _ = remove_file(&Path::new(PATH));
+    }
+    /// Test if we corretly read file input.
+    #[test]
+    fn file_io() {
+        create_test_setup();
+        let content = read_file(&Path::new(PATH));
+        cleanup_test_setup();
+        assert_eq!(from_utf8(CONTENT).unwrap(), content.unwrap().to_string());
+    }   
+
+    /// Test if the calculation of calories each elf is carrying is correct.
+    #[test]
+    fn elf_calories() {
+        create_test_setup();
+        let content = read_file(&Path::new(PATH)).unwrap();
+        let file_path = Path::new("input.txt");
+        let content = calorie_counting_lib::read_file(file_path).unwrap();
+        let splits = content.split("\n\n");
+        let result_vec = Vec::<u64>::new();
+        for elf in splits.map(|s| Elf::new(s)) {
+            result_vec.push(elf.total_calories());
+        }
+        cleanup_test_setup();
+    }
+}
diff --git a/2022/day-1_calorie_counting/src/main.rs b/2022/day-1_calorie_counting/src/main.rs
deleted file mode 100644
index e7a11a9..0000000
--- a/2022/day-1_calorie_counting/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}
diff --git a/README.md b/README.md
index 536cd36..1b8c744 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,8 @@
-# Advent of Code
-
+#Advent of Code
 ```
 .
 ├── 2022
 │   └── day-1_calorie_counting
-│       ├── Cargo.toml
-│       └── src
-│           └── main.rs
+├── create_readme.sh
 └── README.md
 ```
diff --git a/create_readme.sh b/create_readme.sh
new file mode 100755
index 0000000..248cde0
--- /dev/null
+++ b/create_readme.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo -e "#Advent of Code\n\`\`\`\n$(tree -L 2|head -n -1)\n\`\`\`" > README.md