From 19d34d9263bb5236aa649ce99270024e3440060c Mon Sep 17 00:00:00 2001
From: Julius de Jeu <julius@voidcorp.nl>
Date: Wed, 1 Dec 2021 17:07:17 +0100
Subject: [PATCH] Day1

---
 .gitignore  |    2 +
 Cargo.lock  |  171 +++++
 Cargo.toml  |   10 +
 input/day1  | 2000 +++++++++++++++++++++++++++++++++++++++++++++++++++
 src/day.rs  |    5 +
 src/day1.rs |   71 ++
 src/main.rs |   62 ++
 7 files changed, 2321 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 input/day1
 create mode 100644 src/day.rs
 create mode 100644 src/day1.rs
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6b39d31
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+.idea/
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..c528bd5
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,171 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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+
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+ "clap",
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+ "winapi",
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..8cce6d1
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "aoc2021"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = "2.34.0"
+chrono = "0.4.19"
diff --git a/input/day1 b/input/day1
new file mode 100644
index 0000000..fc5ed31
--- /dev/null
+++ b/input/day1
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\ No newline at end of file
diff --git a/src/day.rs b/src/day.rs
new file mode 100644
index 0000000..2076cbf
--- /dev/null
+++ b/src/day.rs
@@ -0,0 +1,5 @@
+pub trait Day {
+    fn init(content: String) -> Self where Self: Sized;
+    fn part1(&self) -> String;
+    fn part2(&self) -> String;
+}
\ No newline at end of file
diff --git a/src/day1.rs b/src/day1.rs
new file mode 100644
index 0000000..8e61700
--- /dev/null
+++ b/src/day1.rs
@@ -0,0 +1,71 @@
+use std::fs::read_to_string;
+
+#[derive(Eq, PartialEq, Ord, PartialOrd, Clone)]
+pub struct Day1(Vec<i32>);
+
+impl crate::day::Day for Day1 {
+    fn init(f: String) -> Self {
+        let v = f.split('\n').map(|x| x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+        Self(v)
+    }
+
+    fn part1(&self) -> String {
+        let (a, _) = self.0.iter().fold((0, -1), increments);
+        format!("{}", a)
+    }
+
+    fn part2(&self) -> String {
+        let ws = self.0.windows(3).map(|a| a.iter().fold(0, std::ops::Add::add)).collect::<Vec<i32>>();
+        let (a, _) = ws.iter().fold((0, -1), increments);
+        format!("{}", a)
+    }
+}
+
+
+fn increments((a, b): (i32, i32), c: &i32) -> (i32, i32) {
+    let c = *c;
+    if b == -1 {
+        (a, c)
+    } else if c > b {
+        (a + 1, c)
+    } else {
+        (a, c)
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+    use std::fs::read_to_string;
+    use super::Day1;
+    use crate::day::Day;
+
+    #[test]
+    pub fn part1_real() {
+        let f = read_to_string("./input/day1").expect("Could not load input");
+        let d = Day1::init(f);
+        assert_eq!("1466", d.part1())
+    }
+
+    #[test]
+    pub fn part2_real() {
+        let f = read_to_string("./input/day1").expect("Could not load input");
+        let d = Day1::init(f);
+        assert_eq!("1491", d.part2())
+    }
+
+    #[test]
+    pub fn part1_test() {
+        let v = vec![199, 200, 208, 210, 200, 207, 240, 269, 260, 263];
+        let strs = v.iter().map(i32::to_string).collect::<Vec<String>>().join("\n");
+        let d = Day1::init(strs);
+        assert_eq!("7", d.part1())
+    }
+
+    #[test]
+    pub fn part2_test() {
+        let v = vec![199, 200, 208, 210, 200, 207, 240, 269, 260, 263];
+        let strs = v.iter().map(i32::to_string).collect::<Vec<String>>().join("\n");
+        let d = Day1::init(strs);
+        assert_eq!("5", d.part2())
+    }
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..6bcd23b
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,62 @@
+use std::fs::read_to_string;
+use std::time::SystemTime;
+use chrono::Datelike;
+use clap::{App, Arg, SubCommand};
+use crate::day1::Day1;
+use crate::day::Day;
+
+mod day;
+mod day1;
+
+fn load_input(day: &str) -> String {
+    read_to_string(format!("./input/day{}", day)).expect("Could not load input")
+}
+
+fn run_day(days: &Vec<Box<dyn Day>>, day: usize) {
+    if let Some(d) = days.get(day - 1) {
+        let day_code = d.clone();
+        println!("Running day {}!", day);
+        println!("\tPart 1: {}", d.part1());
+        println!("\tPart 2: {}", day_code.part2());
+    } else {
+        eprintln!("Day {} is not available!", day);
+    }
+}
+
+fn main() {
+    let matches = App::new("AOC Time!")
+        .version("1.0")
+        .author("J00LZ")
+        .about("How to overengineer AOC in a single program...")
+        .arg(Arg::with_name("v")
+            .short("v")
+            .multiple(true)
+            .help("Sets the level of verbosity"))
+        .arg(Arg::with_name("all")
+            .short("a")
+            .long("all")
+            .help("run all available days"))
+        .arg(Arg::with_name("DAY")
+            .takes_value(true)
+            .multiple(true))
+        .get_matches();
+
+    let days: Vec<Box<dyn Day>> = vec![Box::new(Day1::init(load_input("1")))];
+
+    let verbosity = matches.occurrences_of("v");
+    if matches.is_present("all") {
+        let l = days.len();
+        println!("running {} days!", l);
+        for v in 1..l + 1 {
+            run_day(&days, v);
+        }
+    } else if let Some(d) = matches.values_of("DAY") {
+        let d = d.map(|x| x.parse::<i32>().expect("Did not provide an int!"));
+        for v in d {
+            run_day(&days, v as usize);
+        }
+    } else {
+        let v = chrono::Local::now().day();
+        run_day(&days, v as usize)
+    }
+}