first version of aoc helper

.ruby-version

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+3.1.2

Gemfile

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+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem 'tty-prompt'
+gem 'tty-file'
+gem "colorize", "~> 0.8.1"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    colorize (0.8.1)
+    diff-lcs (1.5.0)
+    pastel (0.8.0)
+      tty-color (~> 0.5)
+    tty-color (0.6.0)
+    tty-cursor (0.7.1)
+    tty-file (0.10.0)
+      diff-lcs (~> 1.3)
+      pastel (~> 0.8)
+      tty-prompt (~> 0.22)
+    tty-prompt (0.23.1)
+      pastel (~> 0.8)
+      tty-reader (~> 0.8)
+    tty-reader (0.9.0)
+      tty-cursor (~> 0.7)
+      tty-screen (~> 0.8)
+      wisper (~> 2.0)
+    tty-screen (0.8.1)
+    wisper (2.0.1)
+
+PLATFORMS
+  arm64-darwin-21
+
+DEPENDENCIES
+  colorize (~> 0.8.1)
+  tty-file
+  tty-prompt
+
+BUNDLED WITH
+   2.3.22

app/main.rb

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+require "tty-prompt"
+require_relative "tasks/new_day"
+require_relative "tasks/part_two"
+
+prompt = TTY::Prompt.new
+
+day = prompt.ask("Name the day (1-24)") do |q|
+  q.in("1-24")
+end
+selected = prompt.select("What do you want to do", "New day":0, "Add part 2 to a day":1)
+
+if selected == 0
+  new_day(prompt, day)
+elsif selected == 1
+  part_two(prompt, day)
+end

app/tasks/new_day.rb

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+require "tty-prompt"
+require "tty-file"
+require "ostruct"
+
+def new_day(prompt, day)
+  input = prompt.multiline("Example input").join("")
+  print input
+  result = prompt.ask("Example result")
+
+  day_name = "day_#{day}"
+  
+  TTY::File.copy_directory("app/templates","#{day_name}")
+
+  TTY::File.replace_in_file "#{day_name}/run.rb", /%day_name%/, day_name
+  TTY::File.replace_in_file "#{day_name}/test.rb", /%day_name%/, day_name
+  TTY::File.replace_in_file "#{day_name}/test.rb", /%example_result%/, result 
+  TTY::File.replace_in_file "#{day_name}/test.rb", /%example_input%/, input 
+
+  puts "Done - run with:"
+  puts "ruby #{day_name}/test.rb"
+end

app/tasks/part_two.rb

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+require "tty-prompt"
+
+def part_two(prompt, day)
+  prompt.say("part two not yet supported")
+end

app/templates/impl.rb

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+#prepare the input which is a string containing new lines
+def parse(input)
+  data = []
+  input.each_line do |line|
+    data << line
+  end
+  data
+end
+
+# result should a single string or integer
+def calculate(data)
+  result = ""
+  data.each do |d|
+    result = d
+  end
+  result
+end

app/templates/run.rb

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+require_relative "impl"
+
+def print(result)
+  if result.is_a? Array
+    result.map! {|l| "#{l}\n" } 
+  end
+  
+  puts result
+end
+
+def run
+  puts "running your implementation"
+  input = File.new("%day_name%/data").read
+  data = parse(input)
+  result = calculate(data)
+  print(result)
+end
+
+run

app/templates/test.rb

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+require_relative "impl"
+
+INPUT = <<~IN
+%example_input%
+IN
+
+RESULT = %example_result%
+
+def test_example
+  parsed = parse(INPUT)
+  result = calculate(parsed)
+
+  if result == RESULT
+    puts "Test successful. Now run with real input"
+    puts "ruby %day_name%/run.rb"
+  else
+    puts "Test failed"
+    puts "expected \"#{RESULT}\" got \"#{result}\""
+  end
+end
+
+test_example

readme.md

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+## Helper for solving Advent of Code days
+
+run `ruby app/main.rb`
+
+name the day
+first input is the example input
+second input is the examples result
+
+this will generate everything needed to start coding the day
+
+tbd part2