#!/usr/bin/env ruby

require "rubygems"
require "optparse"
$:.unshift "#{File.dirname(__FILE__)}/../lib"
$:.unshift "#{File.dirname(__FILE__)}/../test"

#require "logstash/test_syntax"
#require "logstash/filters/test_date"
#require "logstash/filters/test_multiline"

def check_lib(lib, provider, optional=true, message=nil)
  begin
    require lib
    puts "+ Found #{optional ? "optional" : "required"} library '#{lib}'"
    return { :optional => optional, :found => true }
  rescue LoadError => e
    puts "- Missing #{optional ? "optional" : "required"} library '#{lib}' - try 'gem install #{provider}'#{optional ? " if you want this library" : ""}. #{message}"
    return { :optional => optional, :found => false }
  end
end

def report_ruby_version
  puts "Running #{RUBY_VERSION}p#{RUBY_PATCHLEVEL} on #{RUBY_PLATFORM}"
end

def check_libraries
  results = []
  results << check_lib("em-http-request", "em-http-request", true,
            "needed for ElasticSearch input, output, and logstash-web support.")
  results << check_lib("em-mongo", "em-mongo", true,
            "needed for the mongodb output.")
  results << check_lib("grok", "jls-grok", true,
            "needed for the grok filter.")
  results << check_lib("em-websocket", "em-websocket", true,
            "needed for websocket output")
  results << check_lib("rack", "rack", true,
            "needed for logstash-web")
  results << check_lib("amqp", "amqp", true,
            "needed for AMQP input and output")
  results << check_lib("sinatra/async", "async_sinatra", true,
            "needed for logstash-web")
  results << check_lib("uuidtools", "uuidtools", true,
            "needed for AMQP input and output")
  results << check_lib("ap", "awesome_print", true,
            "improve logstash debug logging output")
  results << check_lib("eventmachine", "eventmachine", false,
            "required for logstash to function")

  missing_required = results.count { |r| !r[:optional] and !r[:found] }
  if missing_required == 0
    puts "All required libraries found :)"
  else
    suffix = (missing_required > 1) ? "ies" : "y"
    puts "FATAL: Missing #{missing_required} required librar#{suffix}"
    return false
  end

  return true
end

def run_tests
  require "#{File.dirname(__FILE__)}/../test/run"
  return Test::Unit::AutoRunner.run
end

def main(args)
  report_ruby_version
  if !check_libraries
    puts "Library check failed."
    return 1
  end

  if !run_tests
    puts "Test suite failed."
    return 1
  end

  return 0
end

exit(main(ARGV))