module StoresHelper
	def attachFromUrl attachment
		container = attachment.container
		case container.class.to_s
		when 'Message'
			board_message_path(container.board, container)
		when 'Issue'
			issue_path(container)
		when 'Document'
			document_path container
		when 'HomeworkAttach'
			bid_path(container.bid)
		when 'Memo'
			forum_memo_path(container.forum, container)
		when 'News'
			news_path(container)
		when 'Project'
			project_files_path(container)
    when 'Course'
      course_files_path(container)
		when 'Version'
			# version_path(container)
			project_files_path(container.project)
		when 'WikiPage'
			project_wiki_path(container.project)
		when 'Bid'
			bid_path(container)
		else
			Rails.logger.error "ERROR: StoresHelper#attachUrl unkown type ==> #{container}"
			'#'
		end
	end

	def result_come_from attachment
		come_from_local(attachment).join(" > ").html_safe
	end

	private

	WORD_LIMIT = 100
	def come_from_local attachment
		container = attachment.container
		case container.class.to_s
		when 'Message'
			# '项目 > zzz > 论坛 > 帖子xxx'
			# topic_str = container.project.project_type == 0 ? l(:label_board) : l(:label_new_course)

			course = container.course
			project = container.project
			if course.nil? # container is belongs to Project
				topic_list = link_to l(:label_board), project_boards_path(container.project)
				topic_item = link_to container.subject.truncate(WORD_LIMIT, omission: '...'), board_message_path(container.board, container), title: container.subject
				project_link(container.project).push(topic_list, topic_item)
			else # container is belongs to Course
				topic_list = link_to l(:label_course_news), course_boards_path(course)
				topic_item = link_to container.try(:subject).to_s.truncate(WORD_LIMIT, omission: '...'), board_message_path(container.board, container), title: container.subject
				project_link(course).push(topic_list, topic_item)
			end
		when 'Issue'
			# '项目 > zzz > 缺陷 > 问题xxx'
			issue_list = link_to l(:label_project_issues),  project_issues_path(container.project)
			issue_item = link_to container.subject.truncate(WORD_LIMIT, omission: '...'), issue_path(container), title: container.subject
			project_link(container.project).push(issue_list, issue_item)
		when 'Document'
			# '项目 > zzz > 文档 > 文档xxx'
			doc_list = link_to l(:label_document), project_documents_path(container.project)
			doc_item = link_to container.title.truncate(WORD_LIMIT, omission: '...'), document_path(container), title: container.title
			project_link(container.project).push(doc_list, doc_item)
		when 'News'
			# '课程 > zzz > 新闻 > 新闻xxx'
			course = container.course
			project = container.project
			if course.nil? # container is belongs to Project
				news_list = link_to l(:label_news), project_news_index_path(container.project)
				news_item = link_to container.title.truncate(WORD_LIMIT, omission: '...'), news_path(container), title: container.title
				project_link(container.project).push(news_list, news_item)
			else # container is belongs to Course
				news_list = link_to l(:label_course_news), course_news_index_path(course)
				news_item = link_to container.title.truncate(WORD_LIMIT, omission: '...'), news_path(container), title: container.title
				project_link(course).push(news_list, news_item)
			end

		when 'Project'
			# '项目 > zzz '
			file_str = container.project.project_type == 0 ? l(:project_module_files) : l(:label_course_file)
			files_list = link_to file_str, project_files_path(container.project)
			project_link(container).push(files_list)
		when 'Course'
			files_list = link_to l(:label_course_file), course_files_path(container)
			project_link(container).push(files_list)
		when 'Version'
			# '项目 > zzz > 里程碑 > xxx'
			ver_list = link_to l(:label_roadmap), project_roadmap_path(container.project)
			files_list = link_to l(:label_course_file), project_files_path(container.project)
			ver_item = link_to container.name.truncate(WORD_LIMIT, omission: '...'), version_path(container), title: container.name
			project_link(container.project).push(ver_list, files_list, ver_item)
		when 'WikiPage'
			# '项目 > zzz > 维基 > xxx' 有点问题
			wiki_list = link_to l(:label_wiki), project_wiki_path(container.project)
			project_link(container.project).push(wiki_list)
		when 'HomeworkAttach'
			# '课程 > zzz > 作业 > 作业xxx'
			bid_link(container.bid)
		when 'Memo'
			# '贴吧 > 讨论区 > 帖子 xxx'
			return [link_to(attachment.id, '#')] if container.forum.nil?
			forums_list = link_to l(:label_forum), forums_path
			memo_list = link_to container.forum.name, forum_path(container.forum)
			memo_item = link_to container.subject,  forum_memo_path(container.forum, container)
			[forums_list, memo_list, memo_item]
		when 'Bid'
			# '竞赛 > xxx '
			bid_link(container)
		else
			Rails.logger.error "ERROR: attachment type unkown. file:#{__FILE__}, line:#{__LINE__}"
			Rails.logger.error "#{container.class.to_s}"
			[link_to('unkown', '')]
		end
	rescue ActionController::RoutingError => e
		Rails.logger.error "ERROR: RoutingError #{e}"
		[link_to('unkown', '')]
	end


	def bid_link bid
		bid_list = nil
		bid_item = nil
		case bid.reward_type
		when 1 # 众包 
			bid_list = link_to l(:label_requirement_enterprise_list), calls_path
			bid_item = link_to bid.name, respond_path(bid)
		when 2 # 竞赛
			bid_list = link_to l(:label_contest_list), contest_path
			bid_item = link_to bid.name, respond_path(bid)
		when 3 # 作业
			if bid.courses.first.nil?
				Rails.logger.error  "ERROR: attachment type unkown #bid_link/when 3" 
				return [link_to('unkown', '#')] 
			end
			bid_list = link_to l(:label_homework), homework_course_path(bid.courses.first)
			bid_item = link_to bid.name, respond_path(bid)
			return project_link(bid.courses.first).push(bid_list, bid_item)
		else
			xxx
		end
		[bid_list, bid_item]
	end


	def project_link project
		if project.nil?
			Rails.logger.error  "ERROR: attachment type unkown #project_link project.nil? file: #{__FILE__}, line: #{__LINE__}" 
			return [link_to('unkown', '')]
		end
		project_list = nil
		klass = project.class.to_s
		case klass
		when "Project"
			project_list = link_to l(:label_project_plural), projects_path
			project_item = link_to project.to_s, project_path(project)
			[project_list, project_item]
		when "Course"
			course_list = link_to l(:label_new_course), courses_path
			course_item = link_to project.name, course_path(project)
			[course_list, course_item]
		else
			Rails.logger.error "[StoresHelper]: #{klass}   ======================================="
			[]
		end

	end
end