require 'rubygems'
require "features/support/extra_hooks.rb"
require 'time'
require 'rspec'

# Force UTF-8. Ruby will default to the system locale, and if it is
# non-UTF-8, String-methods will fail when operating on non-ASCII
# strings.
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8

def fatal_system(str)
  unless system(str)
    raise StandardError.new("Command exited with #{$?}")
  end
end

def git_exists?
  File.exists? '.git'
end

def create_git
  Dir.mkdir 'config'
  FileUtils.touch('config/base_branch')
  Dir.mkdir('config/APT_overlays.d')
  Dir.mkdir 'debian'
  File.open('debian/changelog', 'w') do |changelog|
    changelog.write(<<END_OF_CHANGELOG)
tails (0) stable; urgency=low

  * First release.

 -- Tails developers <tails@boum.org>  Mon, 30 Jan 2012 01:00:00 +0000
END_OF_CHANGELOG
  end

  fatal_system "git init --quiet"
  fatal_system "git config user.email 'tails@boum.org'"
  fatal_system "git config user.name 'Tails developers'"
  fatal_system "git add debian/changelog"
  fatal_system "git commit --quiet debian/changelog -m 'First release'"
  fatal_system "git branch -M stable"
  fatal_system "git branch testing stable"
  fatal_system "git branch devel stable"
  fatal_system "git branch feature/jessie devel"
end

def current_branch
  cmd = 'git rev-parse --symbolic-full-name --abbrev-ref HEAD'.split
  branch = cmd_helper(cmd).strip
  assert_not_equal("HEAD", branch, "We are in 'detached HEAD' state")
  return branch
end

# In order: if git HEAD is tagged, return its name; if a branch is
# checked out, return its name; otherwise we are in 'detached HEAD'
# state, and we return the empty string.
def describe_git_head
  cmd_helper("git describe --tags --exact-match #{current_commit}".split).strip
rescue Test::Unit::AssertionFailedError
  begin
    current_branch
  rescue Test::Unit::AssertionFailedError
    ""
  end
end

def current_commit
  cmd_helper('git rev-parse HEAD'.split).strip
end

def current_short_commit
  current_commit[0, 7]
end

RSpec::Matchers.define :have_suite do |suite|
  match do |string|
    # e.g.: `deb http://deb.tails.boum.org/ 0.10 main contrib non-free`
    %r{^deb +http://deb\.tails\.boum\.org/ +#{Regexp.escape(suite)} main}.match(string)
  end
  failure_message_for_should do |string|
    "expected the sources to include #{suite}\nCurrent sources : #{string}"
  end
  failure_message_for_should_not do |string|
    "expected the sources to exclude #{suite}\nCurrent sources : #{string}"
  end
  description do
    "expected an output with #{suite}"
  end
end