# encoding: utf-8
#
# Copyright (c) 2014-2016 TechnoPark Corp.
# Copyright (c) 2014-2016 Yegor Bugayenko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the 'Software'), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

require 'filemagic'
require 'pdd/source'
require 'rake/file_list'

module PDD
  # Code base abstraction
  class Sources
    # Ctor.
    # +dir+:: Directory with source code files
    def initialize(dir, ptns = [])
      @dir = dir
      @exclude = ptns
      @magic = FileMagic.new(FileMagic::MAGIC_MIME)
    end

    # Fetch all sources.
    def fetch
      files = Rake::FileList.new(File.join(@dir, '**/*')) do |list|
        @exclude.each do |ptn|
          Rake::FileList.new(File.join(@dir, ptn)).each do |f|
            list.exclude(f)
          end
        end
      end.to_a
      PDD.log.info "#{files.size} file(s) found"
      types = [%r{^text/}, %r{application/xml}]
      files
        .select { |f| types.index { |re| @magic.file(f) =~ re } }
        .map do |file|
          VerboseSource.new(
            file,
            Source.new(file, file[@dir.length + 1, file.length])
          )
        end
    end

    def exclude(ptn)
      Sources.new(@dir, @exclude.push(ptn))
    end
  end
end