#!/usr/bin/env ruby
# frozen_string_literal: true

require 'pathname'
require 'optparse'

module AnyCacheSpecRunner
  extend self

  def expand_gemfile_path(gemfile_name)
    File.expand_path(
      File.join('..', '..', 'gemfiles', gemfile_name),
      Pathname.new(__FILE__).realpath
    )
  end

  GEMFILES = {
    redis:                     expand_gemfile_path('redis.gemfile'),
    redis_store:               expand_gemfile_path('redis_store.gemfile'),
    dalli:                     expand_gemfile_path('dalli.gemfile'),
    active_support_with_redis: expand_gemfile_path('active_support_with_redis.gemfile'),
    active_support:            expand_gemfile_path('active_support.gemfile')
  }.freeze

  # rubocop:disable Metrics/MethodLength, Metrics/BlockLength
  def run!
    OptionParser.new do |opts|
      opts.banner = 'Usage: bin/rspec [options]'

      opts.on(
        '--test-redis',
        'Run specs with Redis cache storage'
      ) { run_redis_cache_specs! }

      opts.on(
        '--test-redis-store',
        'Run specs with Redis::Store cache storage'
      ) { run_redis_store_cache_specs! }

      opts.on(
        '--test-dalli',
        'Run specs with Dalli spec storage'
      ) { run_dalli_cache_specs! }

      opts.on(
        '--test-as-redis-cache-store',
        'Run specs with ActiveSupport::Cache::RedisCacheStore cache storage'
      ) { run_as_redis_cache_store_cache_specs! }

      opts.on(
        '--test-as-file-store',
        'Run specs with ActiveSupport::Cache::FileStore cache storage'
      ) { run_as_file_store_cache_specs! }

      opts.on(
        '--test-as-memory-store',
        'Run specs with ActiveSupport::Cache::MemoryStore cache storage'
      ) { run_as_memory_store_cache_specs! }

      opts.on(
        '-h', '--help',
        'Show this message'
      ) { puts opts }
    end.parse!
  end
  # rubocop:enable Metrics/MethodLength, Metrics/BlockLength

  private

  def run_redis_cache_specs!
    ENV['TEST_REDIS_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:redis]

    run_tests!
  end

  def run_redis_store_cache_specs!
    ENV['TEST_REDIS_STORE_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:redis_store]

    run_tests!
  end

  def run_dalli_cache_specs!
    ENV['TEST_DALLI_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:dalli]

    run_tests!
  end

  def run_as_redis_cache_store_cache_specs!
    ENV['TEST_AS_REDIS_CACHE_STORE_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:active_support_with_redis]

    run_tests!
  end

  def run_as_file_store_cache_specs!
    ENV['TEST_AS_FILE_STORE_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:active_support]

    run_tests!
  end

  def run_as_memory_store_cache_specs!
    ENV['TEST_AS_MEMORY_STORE_CACHE'] = 'true'
    ENV['BUNDLE_GEMFILE'] = GEMFILES[:active_support]

    run_tests!
  end

  def run_tests!
    require 'rubygems'
    require 'bundler/setup'
    load Gem.bin_path('rspec-core', 'rspec')
  end
end

AnyCacheSpecRunner.run!