class Crispr::CLI

Handles argument parsing and invokes the mutation and runner logic.
Provides the command-line interface for the Crispr gem.

def self.run(argv = ARGV) 

def self.run(argv = ARGV)
  command = argv.shift
  case command
  when "run"
    input_path = argv.shift
    unless input_path && File.exist?(input_path)
      puts "Error: Please specify a valid Ruby file or directory to mutate."
      exit 1
    end
    paths = File.directory?(input_path) ? Dir.glob("#{input_path}/**/*.rb") : [input_path]
    reporter = Crispr::Reporter.new
    paths.each do |path|
      source = File.read(path)
      mutator = Crispr::Mutator.new(source)
      mutations = mutator.mutations
      if mutations.empty?
        puts "No mutations found in #{path}."
        next
      end
      mutations.each_with_index do |mutated, index|
        puts "Running mutation #{index + 1}/#{mutations.size} on #{path}..."
        killed = Crispr::Runner.run_mutation(path: path, mutated_source: mutated)
        reporter.record(killed: killed)
        puts killed ? "💥 Mutation killed" : "⚠️ Mutation survived"
      end
    end
    summary = reporter.summary
    puts
    puts "Mutations: #{summary[:mutations]}"
    puts "💥 Killed: #{summary[:killed]}"
    puts "⚠️ Survived: #{summary[:survived]}"
    puts "Score: #{summary[:score]}%"
  else
    puts "Usage: crispr run path/to/file.rb"
    exit 1
  end
end