class Fastlane::Actions::LcovAction

def self.author
  "thiagolioy"
end

def self.available_options
  [
    FastlaneCore::ConfigItem.new(key: :project_name,
                                 env_name: "FL_LCOV_PROJECT_NAME",
                                 description: "Name of the project"),
    FastlaneCore::ConfigItem.new(key: :scheme,
                                 env_name: "FL_LCOV_SCHEME",
                                 description: "Scheme of the project"),
    FastlaneCore::ConfigItem.new(key: :output_dir,
                                 env_name: "FL_LCOV_OUTPUT_DIR",
                                 description: "The output directory that coverage data will be stored. If not passed will use coverage_reports as default value",
                                 optional: true,
                                 is_string: true,
                                 default_value: "coverage_reports")
  ]
end

def self.derived_data_dir(options)
  pn = options[:project_name]
  sc = options[:scheme]
  initial_path = "#{Dir.home}/Library/Developer/Xcode/DerivedData/"
  end_path = "/Build/Intermediates/#{pn}.build/Debug-iphonesimulator/#{sc}.build/Objects-normal/i386/"
  match = find_project_dir(pn, initial_path)
  "#{initial_path}#{match}#{end_path}"
end

def self.description
  "Generates coverage data using lcov"
end

def self.exclude_dirs
  ["/Applications/*", "/Frameworks/*"]
end

def self.find_project_dir(project_name, path)
  `ls -t #{path}| grep #{project_name} | head -1`.to_s.gsub(/\n/, "")
end

def self.gen_cov(options)
  tmp_cov_file = "/tmp/coverage.info"
  output_dir = options[:output_dir]
  derived_data_path = derived_data_dir(options)
  system("lcov --capture --directory \"#{derived_data_path}\" --output-file #{tmp_cov_file}")
  system(gen_lcov_cmd(tmp_cov_file))
  system("genhtml #{tmp_cov_file} --output-directory #{output_dir}")
end

def self.gen_lcov_cmd(cov_file)
  cmd = "lcov "
  exclude_dirs.each do |e|
    cmd << "--remove #{cov_file} \"#{e}\" "
  end
  cmd << "--output #{cov_file} "
end

def self.is_supported?(platform)
  [:ios, :mac].include? platform
end

def self.run(options)
  unless Helper.test?
    raise 'lcov not installed, please install using `brew install lcov`'.red if `which lcov`.length == 0
  end
  gen_cov(options)
end