Class: Dogfood::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/dogfood/cli.rb

Constant Summary collapse

UsageError = 
Class.new(StandardError)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/dogfood/cli.rb', line 9

def initialize(argv)
  @argv = argv
  @options = {
    output: default_output_path,
    days: 1,
    stories_per_day: (3..6),
    seed: nil,
    scenario: nil
  }
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/dogfood/cli.rb', line 20

def options
  @options
end

Instance Method Details

#parse! ⇒ Object 



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# File 'lib/dogfood/cli.rb', line 71

def parse!
  i = 0
  while i < @argv.length
    arg = @argv[i]
    case arg
    when "--pack"
      @options[:pack] = @argv[i + 1]
      i += 1
    when "--scenario"
      @options[:scenario] = @argv[i + 1]
      i += 1
    when "--list", "-l"
      @options[:list] = true
    when "--explain"
      val = @argv[i + 1]
      if val && !val.start_with?("-")
        @options[:explain] = val
        i += 1
      else
        @options[:explain] = true
      end
    when "--dry-run"
      @options[:dry_run] = true
    when "--random", "-r"
      @options[:seed] = Random.new_seed
    when /^--days(?:=(.+))?$/
      @options[:days] = ($1 || @argv[i + 1]).to_i
      i += 1 unless $1
    when /^--stories-per-day(?:=(.+))?$/
      @options[:stories_per_day] = parse_stories_per_day($1 || @argv[i + 1])
      i += 1 unless $1
    when /^--seed(?:=(.+))?$/
      @options[:seed] = ($1 || @argv[i + 1]).to_i
      i += 1 unless $1
    when /^--output(?:=(.+))?$/, "-o"
      @options[:output] = ($1 || @argv[i + 1])
      i += 1 unless $1
    when "--help", "-h"
      @options[:help] = true
    else
      @options[:scenario] ||= arg
    end
    i += 1
  end
end

#print_help ⇒ Object 



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# File 'lib/dogfood/cli.rb', line 117

def print_help
  puts <<~HELP
    Usage: dogfood [options] [scenario_name]

      --pack PATH              Ruby file that registers a Dogfood::Pack
                               (default: config/dogfood.rb in the current directory)
      --scenario NAME          Run a specific named scenario (otherwise: random mix)
      --days N                 Number of simulated days (default: 1)
      --stories-per-day N or M-N  Stories per day (default: 3-6)
      --seed N                 Set random seed for reproducibility
      --random                 Use a random seed (prints it)
      --output PATH, -o PATH   Output file path (default: tmp/dogfood/<timestamp>.md)
      --list, -l               List available scenarios
      --explain [NAME|FILE]    Print the stage/decision tree for a scenario name
                               or YAML file, no RNG
      --dry-run --scenario NAME  Same as --explain NAME
      --help, -h               Show help

    Examples:
      dogfood --list
      dogfood --explain supplemental_authorization
      dogfood supplemental_authorization --explain
      dogfood --scenario brake_repair_with_parts_order --days 3
  HELP
end

#run ⇒ Object 



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# File 'lib/dogfood/cli.rb', line 22

def run
  parse!

  if @options[:help]
    print_help
    return
  end

  @options[:pack] ||= default_pack_path
  unless @options[:pack] && File.exist?(@options[:pack])
    raise UsageError, "no --pack given and no config/dogfood.rb found in the current directory"
  end

  load_pack(@options[:pack])

  if @options[:list]
    list_scenarios
    return
  end

  if @options[:explain]
    target = @options[:explain] == true ? @options[:scenario] : @options[:explain]
    explain(target)
    return
  end

  if @options[:dry_run] && @options[:scenario]
    explain_scenario(@options[:scenario])
    return
  end

  generator = Dogfood::DayGenerator.new(
    pack: Dogfood::Pack.current,
    days: @options[:days],
    stories_per_day: @options[:stories_per_day],
    seed: @options[:seed],
    scenario: @options[:scenario]
  )
  result = generator.generate

  output = Dogfood::Renderer.new(result).render
  FileUtils.mkdir_p(File.dirname(@options[:output]))
  File.write(@options[:output], output)

  puts "Generated dogfood: #{@options[:output]}"
  puts "Days: #{result[:days].length}"
  puts "Seed: #{result[:seed]}"
end