This is my solutions for the Advent of Code challenges. I have been doing this in c# to improve my skills in the language. The latest challenge can be seen here:

This repositiory is based on the AoC template by encse. All credits to him for the template.

• Based on .NET 9 and C# 13
• AngleSharp is used for problem download
• git-crypt to store the input files in an encrypted form
• the optional Memento Inputs extension for Visual Studio Code

1. Clone the repo
2. Install .NET
3. Install and initialize git-crypt:

> brew install git-crypt
> cd repo-dir
> git-crypt init
> git-crypt export-key ~/aoc-crypt.key

Don't commit aoc-crypt.key into a public repo, back it up in some protected place. If you need to clone your repo later you will need to unlock it using this key such as:

> git clone ...
> cd repo-dir
> git-crypt unlock ~/aoc-crypt.key

4. export your SESSION cookie from the adventofcode.com site in your terminal as an env variable:

> export SESSION=djsaksjakshkja...

5. Get help with dotnet run and start coding.

Usage: dotnet run [arguments]
1) To run the solutions and admire your advent calendar:
 [year]/[day|all] Solve the specified problems
 today Shortcut to the above
 [year] Solve the whole year
 all Solve everything
 calendars Show the calendars
 init [this .git repo] [sslSalt] ([sslPassword]) Initialize the current folder
2) To start working on new problems:
login to https://adventofcode.com, then copy your session cookie, and export
it in your console like this
 export SESSION=73a37e9a72a...
then run the app with
 update [year]/[day] Prepares a folder for the given day, updates the input,
 the readme and creates a solution template.
 update today Shortcut to the above.
3) To upload your answer:
set up your SESSION variable as above.
 upload [year]/[day] Upload the answer for the selected year and day.
 upload today Shortcut to the above.

If you prefer, you can work directly in VSCode as well.

Open the command Palette (⇧ ⌘ P), select Tasks: Run Task then e.g. update today.

Work on part 1. Check the solution with the upload today task. Continue with part 2.

Note: this feature relies on the "Memento Inputs" extension to store your session cookie, you need to set it up in advance from the Command Palette with Install Extensions.