From fbfffff512f5901cacd94a5d0af3792602bf2976 Mon Sep 17 00:00:00 2001
From: Lars Martens <lars@martens.red>
Date: Sat, 19 Nov 2022 21:11:26 +0100
Subject: [PATCH] Add convenient project base

---
 .gitignore |  3 +++
 Cargo.lock | 25 +++++++++++++++++++++++++
 Cargo.toml |  7 +++++++
 README.md  | 31 +++++++++++++++++++++++++++++++
 justfile   | 38 ++++++++++++++++++++++++++++++++++++++
 src/lib.rs | 10 ++++++++++
 6 files changed, 114 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 README.md
 create mode 100644 justfile
 create mode 100644 src/lib.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..623dc87
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+output/
+.env
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..b66cb4e
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,25 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aoc2022"
+version = "0.0.0"
+dependencies = [
+ "itertools",
+]
+
+[[package]]
+name = "either"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
+
+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0187458
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "aoc2022"
+version = "0.0.0"
+edition = "2021"
+
+[dependencies]
+itertools = "0.10.5"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..01903dc
--- /dev/null
+++ b/README.md
@@ -0,0 +1,31 @@
+# Advent Of Code 2022
+
+My solutions for [Advent Of Code](https://adventofcode.com) 2022.
+
+## Usage
+
+This project uses [`just`](https://github.com/casey/just) to speed up some commands. For some commands to work (like downloading puzzle input or submitting a solution) a session token needs to be provided in the `AOC_SESSION` environment variable. The easiest way to set it is to create the file `.env` with `AOC_SESSION=your token` inside in the root of this repository. The token can be received by reading the session cookie from the AOC website.
+
+Download the puzzle input, create a file for the current day and open it in vscode:
+
+```shell
+just begin        # Prepare the current day
+just day=09 begin # Prepare day 9
+```
+
+Run:
+
+```shell
+just        # Runs the current day
+just day=09 # Runs day 9
+```
+
+After running a puzzle the output is saved to `output/XX.log`. This log will be read when submitting puzzles:
+
+```shell
+just submit 1        # Submit the first half of a puzzle
+just submit 2        # Submit the second half of a puzzle
+just day=09 submit 2 # Submit the second half of the puzzle for day 9
+```
+
+Submit looks for a line containing `level-1-solution=123` to submit 123 as the solution to level 1. There is a convenience function `solved_level_1` in `lib.rs` you can use to avoid printing this line manually.
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..f3134eb
--- /dev/null
+++ b/justfile
@@ -0,0 +1,38 @@
+set dotenv-load
+
+day := `date +%d`
+dayWithout0 := trim_start_match(day, "0")
+year := "2022"
+file := "src/bin/" + day + ".rs"
+
+# Format, lint, and run the program for today.
+run: _output-folder
+    rustfmt src/bin/{{day}}.rs
+    cargo clippy
+    # Hide warning here because we just ran clippy
+    RUSTFLAGS=-Awarnings cargo run --release --bin {{day}} | tee "output/{{day}}.log"
+
+# Begin working on todays problem. Downloads input, creates template and opens the problem and code.
+begin: _input-folder
+    echo "use aoc2022::*;\n\nconst INPUT: &str = include_str!(\"../../input/{{day}}\");\n\nfn main() {\n\n}" >> {{file}}
+    curl --silent "https://adventofcode.com/{{year}}/day/{{dayWithout0}}/input" -H "Cookie: session=$AOC_SESSION" > "input/{{day}}"
+    code {{file}}
+    open "https://adventofcode.com/{{year}}/day/{{dayWithout0}}"
+
+# Submit a solution from the previously run program for the given level (1 or 2).
+submit level:
+    # Find the solution and pass it to the _submit command.
+    just _submit {{level}} $(pcregrep -o1 "^level-{{level}}-solution=(.*)$" output/{{day}}.log)
+
+_submit level solution:
+    curl --silent "https://adventofcode.com/{{year}}/day/{{dayWithout0}}/answer" \
+        -X "POST" \
+        -H "Cookie: session=$AOC_SESSION" \
+        --data "level={{level}}&answer={{solution}}" \
+        | xmllint --html --xpath "//main" - 2> /dev/null
+
+_output-folder:
+    mkdir -p output
+
+_input-folder:
+    mkdir -p input
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..1585a14
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,10 @@
+/// Remember the passed value as the solution for the current puzzle.
+/// Prints a specially formatted line so that the solution can be found from the justfile.
+pub fn solved_level_1<S: ToString>(s: S) {
+    println!("level-1-solution={}", s.to_string());
+}
+
+/// See [solved_level_1].
+pub fn solved_level_2<S: ToString>(s: S) {
+    println!("level-2-solution={}", s.to_string());
+}