require 'rubygems'
require 'bundler/setup'
require 'rspec/core/rake_task'
require 'fileutils'
require 'rubocop/rake_task'
require 'English'

desc 'Show help'
task :help do
  puts <<~EOF

  == SPEC ==

  usage: rake spec [spec=result_path]
  example:
    rake spec                       # check all unit tests status
    rake spec spec=job"             # check spec/job_spec.rb status

  == RUBOCOP ==

  usage: rake rubocop [file=pattern]
  example:
    rake rubocop file="lib/**/*.rb" # check all lib files

  EOF
end

RSpec::Core::RakeTask.new do |t|
  ENV['LKP_SRC'] ||= File.expand_path File.dirname(__FILE__).to_s

  puts "PWD = #{Dir.pwd}"
  puts "ENV['LKP_SRC'] = #{ENV['LKP_SRC']}"

  spec = ENV['spec'] || '*'
  t.pattern = "spec/**{,/*/**}/#{spec}_spec.rb"
end

if ENV['GENERATE_REPORTS'] == 'true'
  require 'ci/reporter/rake/rspec'
  task spec: 'ci:setup:rspec'
end

begin
  RuboCop::RakeTask.new(:rubocop) do |t|
    t.options = ['-D', '-c.rubocop.yml']
    t.patterns = [ENV['file']] if ENV['file']

    puts "PWD = #{Dir.pwd}"
    puts "rubocop.patterns = #{t.patterns}"
    puts "rubocop.options = #{t.options}"
  end
rescue StandardError => e
  puts e.to_s
end

def bash(cmd)
  output = `bash -c #{Shellwords.escape(cmd)}`
  puts output unless output.empty?

  raise "bash exitstatus: #{$CHILD_STATUS.exitstatus}" unless $CHILD_STATUS.success?
end

desc 'Run syntax check'
task :syntax do
  executables = `find -type f -executable ! -path "./.git*" ! -size +100k`.split("\n").join(' ')

  bash "grep -s -l '^#!/.*ruby$' #{executables} | xargs -n1 ruby -c >/dev/null"
  bash "grep -s -l '^#!/.*bash$' #{executables} | xargs -n1 bash -n"
  bash "grep -s -l '^#!/bin/sh$' #{executables} | xargs -n1 dash -n"

  puts 'syntax OK'
end

desc 'Run shellcheck'
task :shellcheck do
  executables = `find -type f -executable ! -path "./.git*" ! -size +100k | xargs grep -s -l -e '^#!/.*bash$' -e '^#!/bin/sh$'`.split("\n").join(' ')

  format = ENV['format'] || 'tty'

  base_cmd = "shellcheck -S warning -f #{format}"
  base_cmd += " -i #{ENV['code']}" if ENV['code']

  bash "#{base_cmd} #{executables}"

  puts 'shellcheck OK'
end

desc 'Run code check'
task code: %i[syntax shellcheck rubocop spec]