require 'singleton'
require_relative 'star_source'
require_relative 'git_source'
module KCommercial
  module Resources
    class SourceManager
      include Singleton
      # The shared manager
      # @return [CocoaDepot::Resources::SourceManager]
      def self.shared
        SourceManager.instance
      end


      def home_dir
        @home_dir ||= Pathname.new(ENV['CP_HOME_DIR'] || '~/.cocoadepot-resources').expand_path
        @home_dir.mkpath unless @home_dir.exist?
        @home_dir
      end

      def repos_dir
        @repos_dir ||= home_dir.join('repos')
        @repos_dir.mkpath unless @repos_dir.exist?
        @repos_dir
      end

      def sources
        @sources ||= {}
      end

      def source_with_url(url)
        if is_git_url(url)
          name = name_for_git_url(url)
          path = repos_dir.join(name)
          sources[name] ||= GitSource.new(url, path)
        else
          name = name_for_platform_url(url)
          path = repos_dir.join(name)
          sources[name] ||= StarSource.new(url, path)
        end
        sources[name]
      end
      # url是否是git仓库
      def  is_git_url(url)
        regexp = Regexp.new('(?:git|ssh|https?|git@[-\w.]+):(\/\/)?(.*?)(\.git)(\/?|\#[-\d\w._]+?)$')
        return regexp.match(url)
      end
      # 获取git资源仓库名字
      def name_for_git_url(url)
        base_from_host_and_path = lambda do |host, path|
          if host && !host.empty?
            base = host.split('.')[-2] || host
            base += '-'
          else
            base = ''
          end

          base + path.gsub(/.git$/, '').gsub(%r{^/}, '').split('/').join('-')
        end

        case url.to_s.downcase
        when %r{github.com[:/]+(.+)/(.+)}
          base = Regexp.last_match[1]
        when %r{^\S+@(\S+)[:/]+(.+)$}
          host, path = Regexp.last_match.captures
          base = base_from_host_and_path[host, path]
        when URI.regexp
          url = URI(url.downcase)
          base = base_from_host_and_path[url.host, url.path]
        else
          base = url.to_s.downcase
        end

        name = base
        name
      end
      # 获取资源平台名字
      def name_for_platform_url(url)
        hash = Hash.new("")
        if url.index('?')
          str = url.split('?')[1]
          if str.split('&')
            array = str.split('&')
            array.each do |item|
              hash[item.split('=')[0]] = item.split('=')[1]
            end
          end
        end
        return "exploration_#{hash['space']}"
      end
    end
  end
end