From d00d157fb5214eba50460a994befcea69e018a61 Mon Sep 17 00:00:00 2001
From: Ty <ty@blahaj.land>
Date: Fri, 1 Dec 2023 22:34:54 -0700
Subject: [PATCH] Actual cli + day2 moment

---
 Cargo.lock      | 1299 +++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml      |    4 +
 src/day1/mod.rs |    8 +-
 src/day2/mod.rs |  100 ++++
 src/main.rs     |   60 ++-
 src/utils.rs    |    8 +
 6 files changed, 1465 insertions(+), 14 deletions(-)
 create mode 100644 src/day2/mod.rs
 create mode 100644 src/utils.rs

diff --git a/Cargo.lock b/Cargo.lock
index c0c9382..139a1b5 100644
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+]
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+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
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+ "windows_i686_msvc 0.52.0",
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+]
diff --git a/Cargo.toml b/Cargo.toml
index ac5e7d9..f5e8546 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,3 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+clap = { version = "4.4.10", features = ["derive"] }
+regex = "1.10.2"
+reqwest = "0.11.22"
+tokio = { version = "1.34.0", features = ["macros", "rt-multi-thread"] }
diff --git a/src/day1/mod.rs b/src/day1/mod.rs
index d01db50..56db338 100644
--- a/src/day1/mod.rs
+++ b/src/day1/mod.rs
@@ -1,6 +1,4 @@
-pub fn part1() {
-    let input = include_str!("input.txt");
-
+pub fn part1(input: String) {
     let mut values = Vec::<usize>::new();
 
     for line in input.lines() {
@@ -12,9 +10,7 @@ pub fn part1() {
     println!("{}", values.into_iter().reduce(|acc, e| acc + e).unwrap());
 }
 
-pub fn part2() {
-    let input = include_str!("input.txt");
-
+pub fn part2(input: String) {
     let mut values = Vec::<usize>::new();
 
     for line in input.lines() {
diff --git a/src/day2/mod.rs b/src/day2/mod.rs
new file mode 100644
index 0000000..5fd8d1d
--- /dev/null
+++ b/src/day2/mod.rs
@@ -0,0 +1,100 @@
+use regex::Regex;
+
+#[derive(Debug)]
+struct Game {
+    id: usize,
+    picks: Vec<CubeCombo>
+}
+
+#[derive(Debug)]
+struct CubeCombo {
+    red: usize,
+    blue: usize,
+    green: usize
+}
+
+fn parse_games(input: String) -> Vec<Game> {
+    let game_re = Regex::new(r"Game (\d+): (.+)").unwrap();
+    let pick_re = Regex::new(r"(?<first>\d+ (?:red|green|blue))(?:, (?<second>\d+ (?:red|green|blue)))?(?:, (?<third>\d+ (?:red|green|blue)))?").unwrap();
+    let mut games = Vec::<Game>::new();
+
+    for line in input.lines() {
+        let line = line.to_string();
+        let captures = game_re.captures(&line).unwrap();
+        let mut game = Game {
+            id: captures.get(1).unwrap().as_str().parse().unwrap(),
+            picks: vec![]
+        };
+        let picks = captures.get(2).unwrap().as_str().split("; ");
+        for pick in picks {
+            let captures = pick_re.captures(pick).unwrap();
+            let captures = vec![
+                captures.name("first"),
+                captures.name("second"),
+                captures.name("third"),
+            ];
+            let mut pick = CubeCombo {
+                red: 0,
+                blue: 0,
+                green: 0
+            };
+
+            for capture in captures.iter().filter(|e| e.is_some()).map(|e| e.unwrap()) {
+                let split = capture.as_str().split(" ").collect::<Vec<_>>();
+                match split[1] {
+                    "red" => pick.red = split[0].parse().unwrap(),
+                    "blue" => pick.blue = split[0].parse().unwrap(),
+                    "green" => pick.green = split[0].parse().unwrap(),
+                    _ => panic!("impossible wtf")
+                }
+            }
+
+            game.picks.push(pick);
+        }
+        games.push(game);
+    }
+
+    games
+}
+
+pub fn part1(input: String) {
+    let games = parse_games(input);
+
+    // Sum the illegal game IDs
+    let sum = games
+        .iter()
+        .filter(|g| 
+            g.picks.iter().all(|pick| pick.red <= 12 && pick.blue <= 14 && pick.green <= 13 )
+        )
+        .fold(0, |acc, e| acc + e.id);
+    println!("{sum}");
+}
+
+pub fn part2(input: String) {
+    let games = parse_games(input);
+    
+    // Calculate the least amount of dice possible for all games
+    let sum = games.iter().map(|game| {
+        let mut combo = CubeCombo {
+            red: 0,
+            green: 0,
+            blue: 0
+        };
+
+        for pick in &game.picks {
+            if combo.red < pick.red {
+                combo.red = pick.red;
+            }
+            if combo.green < pick.green {
+                combo.green = pick.green;
+            }
+            if combo.blue < pick.blue {
+                combo.blue = pick.blue;
+            }
+        }
+
+        combo
+    }).fold(0, |acc, combo| acc + (combo.red * combo.blue * combo.green));
+
+    println!("{sum}");
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 12aedd0..98c636e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,57 @@
+use clap::{Parser, Subcommand};
+
+pub mod utils;
 pub mod day1;
+pub mod day2;
 
-fn main() {
-    let args = std::env::args().collect::<Vec<_>>();
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+struct Cli {
+    /// Sets the cookie to send to fetch input data
+    #[arg(short, long, value_name = "AUTH")]
+    auth: String,
+    /// The subcommand to run
+    #[command(subcommand)]
+    subcommand: Subcommands
+}
 
-    let day = args[1].as_str();
-    let part = args[2].as_str();
-
-    match day {
-        "1" => match part { "1" => day1::part1(), "2" => day1::part2(), _ => panic!("Invalid part #") },
-        _ => panic!("Invalid day #")
+#[derive(Subcommand)]
+enum Subcommands {
+    /// Solves the specified part for the specified day, after fetching the input
+    Solve {
+        /// The day to solve for
+        day: u8,
+        /// The part to solve for
+        part: u8
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let cli = Cli::parse();
+    let client = reqwest::Client::new();
+
+    match cli.subcommand {
+        Subcommands::Solve { day, part } => {
+            let response = client
+                .get(format!("https://adventofcode.com/2023/day/{day}/input"))
+                .header("Cookie", format!("session={auth}", auth = cli.auth))
+                .send()
+                .await
+                .unwrap()
+                .text()
+                .await
+                .unwrap()
+                .trim_end()
+                .to_owned();
+
+            match (day, part) {
+                (1, 1) => day1::part1(response),
+                (1, 2) => day1::part2(response),
+                (2, 1) => day2::part1(response),
+                (2, 2) => day2::part2(response),
+                _ => panic!("Invalid day or part #")
+            }
+        },
     }
 }
diff --git a/src/utils.rs b/src/utils.rs
new file mode 100644
index 0000000..63af3d9
--- /dev/null
+++ b/src/utils.rs
@@ -0,0 +1,8 @@
+pub enum CoroutineYield {
+    Data,
+    Output(String)
+}
+
+pub enum CoroutineYieldResponse {
+    Data(String),
+}
\ No newline at end of file