require 'knapsack_pro'
require 'tty-prompt'

def step_for_rspec(prompt)
  prompt.say "Step for RSpec", color: :yellow
  prompt.say "Add at the beginning of your spec/spec_helper.rb:"

  prompt.say %{
require 'knapsack_pro'
KnapsackPro::Adapters::RSpecAdapter.bind
  }, color: :cyan
end

def step_for_minitest(prompt)
  prompt.say "Step for Minitest", color: :yellow
  prompt.say "Add at the beginning of your test/test_helper.rb:"

  prompt.say %{
require 'knapsack_pro'
knapsack_pro_adapter = KnapsackPro::Adapters::MinitestAdapter.bind
knapsack_pro_adapter.set_test_helper_path(__FILE__)
  }, color: :cyan
end

def step_for_cucumber(prompt)
  prompt.say "Step for Cucumber", color: :yellow
  prompt.say "Create file features/support/knapsack_pro.rb and add there:"

  prompt.say %{
require 'knapsack_pro'
KnapsackPro::Adapters::CucumberAdapter.bind
  }, color: :cyan
end

def step_for_spinach(prompt)
  prompt.say "Step for Spinach", color: :yellow
  prompt.say "Create file features/support/knapsack_pro.rb and add there:"

  prompt.say %{
require 'knapsack_pro'
KnapsackPro::Adapters::SpinachAdapter.bind
  }, color: :cyan
end

def step_for_vcr(prompt)
  prompt.say "Step for VCR/WebMock/FakeWeb gems", color: :yellow
  prompt.say "Add Knapsack Pro API subdomain to ignore hosts"
  prompt.say "in spec/spec_helper.rb or wherever is your VCR configuration:"

  prompt.say %{
require 'vcr'
VCR.configure do |config|
  config.hook_into :webmock # or :fakeweb
  config.ignore_hosts('localhost', '127.0.0.1', '0.0.0.0', 'api.knapsackpro.com')
end

# add below when you hook into webmock
require 'webmock/rspec'
WebMock.disable_net_connect!(:allow => ['api.knapsackpro.com'])

# add below when you use FakeWeb
require 'fakeweb'
FakeWeb.allow_net_connect = %r[^https?://api\.knapsackpro\.com]
  }, color: :cyan

  puts

  prompt.say "Ensure you have require false in Gemfile for webmock gem when VCR is hook into it. Thanks to that webmock configuration in spec_helper.rb is loaded properly."

  prompt.say %{
group :test do
  gem 'vcr'
  gem 'webmock', require: false
  gem 'fakeweb', require: false # example when you use fakeweb
end
  }, color: :cyan
end

def step_for_ci_circle(prompt, answers)
  prompt.say "Step for https://circleci.com", color: :yellow
  prompt.say "Update circle.yml in your project:"

  str = ''
  answers[:testing_tools].each do |tool|
    str << %{
    # Step for #{tool}
    - bundle exec rake knapsack_pro:#{tool}:
        parallel: true # Caution: there are 8 spaces indentation!
    }
  end

  prompt.say((%{
test:
  override:} + str), color: :cyan)

  puts
  set_api_tokens_on_ci(prompt, answers)
end

def step_for_ci_travis(prompt, answers)
  prompt.say "Step for https://travis-ci.org", color: :yellow
  prompt.say "You can parallelize your builds across virtual machines with travis matrix feature."
  prompt.say "https://docs.travis-ci.com/user/speeding-up-the-build/#Parallelizing-your-builds-across-virtual-machines"
  puts
  prompt.say "Update .travis.yml"

  prompt.say %{
script:
  }, color: :cyan

  answers[:testing_tools].each do |tool|
    prompt.say %{
  # Step for #{tool}
  - "bundle exec rake knapsack_pro:#{tool}"
    }, color: :cyan
  end

  prompt.say %{
env:
  global:
    - KNAPSACK_PRO_CI_NODE_TOTAL=2
  }, color: :cyan

  prompt.say %{
  matrix:
    - KNAPSACK_PRO_CI_NODE_INDEX=0
    - KNAPSACK_PRO_CI_NODE_INDEX=1
  }, color: :cyan

  puts
  prompt.say "If you want more parallel jobs then update accordingly:"
  tip_ci_node_total_and_index(prompt)

  puts
  prompt.say "Open travis settings in web interface to add there Knapsack Pro API token."
  puts
  set_api_tokens_on_ci(prompt, answers)
end

def step_for_ci_buildkite(prompt, answers)
  prompt.say "Step for https://buildkite.com", color: :yellow
  prompt.say "Please configure the parallelism parameter in your build step and run the appropiate command in your build:"

  answers[:testing_tools].each do |tool|
    prompt.say %{
# Step for #{tool}
bundle exec rake knapsack_pro:#{tool}
    }, color: :cyan
  end

  puts
  set_api_tokens_on_ci(prompt, answers)
end

def step_for_ci_semaphore(prompt, answers)
  prompt.say "Step for https://semaphoreci.com", color: :yellow
  prompt.say "Set knapsack pro command for each parallel thread. Here is example:"

  answers[:testing_tools].each do |tool|
    puts
    prompt.say "Step for #{tool}"
    prompt.say %{
# Thread 1
bundle exec rake knapsack_pro:#{tool}

# Thread 2
bundle exec rake knapsack_pro:#{tool}
    }, color: :cyan
  end

  puts
  set_api_tokens_on_ci(prompt, answers)
end

def step_for_ci_snap_ci(prompt, answers)
  prompt.say "Step for https://snap-ci.com", color: :yellow
  prompt.say "Please configure number of workers for your project in configuration settings in order to enable parallelism."
  prompt.say "Next thing is to set below commands to be executed in your stage:"

  answers[:testing_tools].each do |tool|
    prompt.say %{
# Step for #{tool}
bundle exec rake knapsack_pro:#{tool}
    }, color: :cyan
  end

  puts
  set_api_tokens_on_ci(prompt, answers)
end

def step_for_ci_other(prompt, answers)
  prompt.say "Step for other CI provider", color: :yellow
  prompt.say "Set below global variables on your CI server."
  puts

  prompt.say "Git installed on the CI server will be used to determine branch name and current commit hash."

  prompt.say %{
KNAPSACK_PRO_REPOSITORY_ADAPTER=git
  }, color: :cyan
  puts

prompt.say "Path to the project repository on CI server, for instance:"
  prompt.say %{
KNAPSACK_PRO_PROJECT_DIR=/home/ubuntu/my-app-repository
  }, color: :cyan
  puts

  prompt.say "You can learn more about those variables here:"
  prompt.say "https://github.com/KnapsackPro/knapsack_pro-ruby#when-you-set-global-variable-knapsack_pro_repository_adaptergit-required-when-ci-provider-is-not-supported"
  puts

  set_api_tokens_on_ci(prompt, answers)

  # set test run command on CI server
  prompt.say "Set test run command on CI server", color: :yellow
  prompt.say "You must set command responsible for running tests for each CI node."
  prompt.say "Let's assume you have 2 CI nodes. Here are commands you need to run for each CI node."

  answers[:testing_tools].each do |tool|
    puts
    prompt.say "Step for #{tool}"
    prompt.say %{
# Command for first CI node
$ KNAPSACK_PRO_CI_NODE_TOTAL=2 KNAPSACK_PRO_CI_NODE_INDEX=0 bundle exec rake knapsack_pro:#{tool}

# Command for second CI node
$ KNAPSACK_PRO_CI_NODE_TOTAL=2 KNAPSACK_PRO_CI_NODE_INDEX=1 bundle exec rake knapsack_pro:#{tool}
    }, color: :cyan
  end
  puts
  prompt.say "If you have more CI nodes then update accordingly:"
  tip_ci_node_total_and_index(prompt)
  puts
end

def tip_ci_node_total_and_index(prompt)
  prompt.say %{
KNAPSACK_PRO_CI_NODE_TOTAL - total number of your CI nodes
KNAPSACK_PRO_CI_NODE_INDEX - starts from 0, it's index of each CI node
  }, color: :cyan
end

def set_api_tokens_on_ci(prompt, answers)
  prompt.say "Set API token", color: :yellow
  prompt.say "You must set different API token on your CI server for each test suite you have:"
  puts

  str = ''
  answers[:testing_tools].each do |tool|
    str << "KNAPSACK_PRO_TEST_SUITE_TOKEN_#{tool.upcase}\n"
  end
  prompt.say str, color: :cyan

  prompt.say "You can generate more API tokens after sign in on https://knapsackpro.com"
  puts
end

namespace :knapsack_pro do
  task :install do
    prompt = TTY::Prompt.new
    answers = {}

    puts
    prompt.say "Welcome to knapsack_pro gem installer."
    puts

    TESTING_TOOLS_CHOICES = {
      'RSpec' => :rspec,
      'Minitest' => :minitest,
      'Cucumber' => :cucumber,
      'Spinach' => :spinach,
    }
    answers[:testing_tools] = []
    while answers[:testing_tools].empty?
      answers[:testing_tools] = prompt.multi_select("Choose your testing tools:", TESTING_TOOLS_CHOICES)
    end

    answers[:has_vcr] = prompt.yes?('Do you use VCR, WebMock or FakeWeb gem?')

    CI_PROVIDER_CHOICES = {
      'https://circleci.com' => :circle,
      'https://travis-ci.org' => :travis,
      'https://buildkite.com' => :buildkite,
      'https://semaphoreci.com' => :semaphore,
      'https://snap-ci.com' => :snap_ci,
      'other' => :other,
    }
    answers[:ci] = prompt.select("What is your CI provider?", CI_PROVIDER_CHOICES)

    puts

    # Instructions how to set up the gem
    puts
    puts
    prompt.say "###### Please follow below instructions to finish configuration ######", color: :green
    puts

    answers[:testing_tools].each do |tool|
      send("step_for_#{tool}", prompt)
      puts
    end

    if answers[:has_vcr]
      step_for_vcr(prompt)
      puts
    end

    send("step_for_ci_#{answers[:ci]}", prompt, answers)

    prompt.say "Now you are ready to use the gem!"
    prompt.say "Please push a new commit to repository so knapsack_pro gem will record time execution of your test suite."
    prompt.say "Your second test suite run on CI will be parallelized with optimal test suite split."
    puts
    puts
    prompt.say "Later you may want to learn about Queue Mode and how to enable it:"
    prompt.say "https://github.com/KnapsackPro/knapsack_pro-ruby#queue-mode"
    puts
    puts
    prompt.say "You can learn more about custom configuration and other features:"
    prompt.say "https://knapsackpro.com/features"
    prompt.say "https://github.com/KnapsackPro/knapsack_pro-ruby#table-of-contents"
    puts
    prompt.say "###### Please follow above instructions to finish configuration ######", color: :green
  end
end