#coding=utf-8
module Mobile
  module Apis
    class Courses < Grape::API
      resource :courses do
        desc "获取所有课程"
        params do
          optional :school_id, type: Integer, desc: '传入学校id,返回该学校课程列表'
          requires :per_page_count, type: Integer, desc: '每页总数'
          requires :page, type: Integer, desc: '当前页码'
        end
        get do
          cs = CoursesService.new
          courses = cs.course_list(params)
          present :data, courses, with: Mobile::Entities::Course
          present :status, 0
        end

        desc "新建课程[TODO,待测试]"
        #current_user当前用户对象（不是id）
        # params[:course][:name]:课程名称
        #params[:course][:password]:密码
        #params[:course][:description]:描述
        #params[:course][:is_public]:是否公开1公开，0私有
        #params[:course][:open_student]:是否公开学生列表1公开，0不公开，不公开时非课程成员无法看到学生列表
        #params[:course][:course_type]:暂时默认给1值。
        #params[:term]：学期（秋季学期或春季学期）
        #params[:time]: 年份（例：2014）
        #params[:setup_time]：暂不传（貌似已经没用了）
        #params[:endup_time]: 暂不传（貌似已经没用了）
        #params[:class_period]:学时总数
        params do
          requires :token, type: String
          requires :name, type: String, desc: '课程名称'
          requires :password, type: String, desc: '密码'
          requires :description, type: String, desc: '描述'
          requires :is_public, type: Integer, desc: '是否公开 1公开 0私有'
          requires :open_student, type: Integer, desc: '是否公开学生列表1公开，0不公开，不公开时非课程成员无法看到学生列表'
          requires :course_type, type:Integer, desc: '暂时传1'
          requires :term, type: String, desc: '学期（秋季学期或春季学期）'
          requires :time, type: String, desc: '年份'
          requires :class_period, type: String, desc: '学时总数'
        end
        post do
          authenticate!
          cs = CoursesService.new
          cs_params = {
            course: params.reject{|k,v| [:term,:time,:class_period].include?(k)},
            term: params[:term],
            time: params[:time],
            class_period: params[:class_period]
          }
          courses = cs.create_course(cs_params, current_user)
          present :data, courses, with: Mobile::Entities::Course
          present :status, 0
        end

        desc "编辑课程[TODO,待测试]"
        params do
          requires :token, type: String
          requires :course_id, type: Integer, desc: '课程id'
          requires :name, type: String, desc: '课程名称'
          requires :password, type: String, desc: '密码'
          requires :description, type: String, desc: '描述'
          requires :is_public, type: Integer, desc: '是否公开 1公开 0私有'
          requires :open_student, type: Integer, desc: '是否公开学生列表1公开，0不公开，不公开时非课程成员无法看到学生列表'
          requires :course_type, type:Integer, desc: '暂时传1'
          requires :term, type: String, desc: '学期（秋季学期或春季学期）'
          requires :time, type: String, desc: '年份'
          requires :class_period, type: String, desc: '学时总数'
        end
        put do
          authenticate!
          cs = CoursesService.new
          cs_params = {
            course: params.reject{|k,v| [:term,:time,:class_period].include?(k)},
            term: params[:term],
            time: params[:time],
            class_period: params[:class_period]
          }
          course = ::Course.find(params[:course_id])
          cs.edit_course_authorize(current_user,course)
          course = cs.edit_course(cs_params, course,current_user)
          present :data, course, with: Mobile::Entities::Course
          present :status, 0
        end
        post do
        end

        desc "加入课程"
        params do
          requires :token, type: String
          requires :course_password, type: String
        end
        post ":id" do
          authenticate!
          cs = CoursesService.new
          status = cs.join_course({:object_id => params[:id],:course_password => params[:course_password]},current_user)
          out = {status: status[:state]}
          message = case status[:state]
          when 0; "加入成功"
          when 1; "密码错误"
          when 2; "课程已过期 请联系课程管理员重启课程。(在配置课程处)"
          when 3; "您已经加入了课程"
          when 4; "您加入的课程不存在"
          when 5; "您还未登录"
          else; "未知错误，请稍后再试"
          end
          out.merge(message: message)
        end

        desc "退出课程"
        params do
          requires :token, type: String
        end
        delete ":id" do
          authenticate!
          cs = CoursesService.new
          status = cs.exit_course({:object_id => params[:id]}, current_user)
          out = {status: status}
          message = case status
                      when 0; "退出成功"
                      when 1; "您不在课程中"
                      when 2; "您还未登录"
                      else; "未知错误，请稍后再试"
                    end
          out.merge(message: message)
        end

        desc "搜索课程"
        params do
          requires :name, type: String, desc: "课程名"
        end
        get 'search' do
          cs = CoursesService.new
          courses = cs.search_course(params)
          present :data, courses, with: Mobile::Entities::Course
          present :status, 0
        end

        desc "课程老师列表"
        params do
          requires :token, type: String
          requires :course_id, type: Integer, desc: "课程id"
        end
        get 'teachers' do
          cs = CoursesService.new
          teachers = cs.course_teacher_or_student_list({role: '1'}, params[:course_id],current_user)
          present :data, teachers, with: Mobile::Entities::User
          present :status, 0
        end

        desc "课程学生列表"
        params do
          requires :token, type: String
          requires :course_id, type: Integer, desc: "课程id"
        end
        get 'students' do
          cs = CoursesService.new
          students = cs.course_teacher_or_student_list({role: '2'}, params[:course_id],current_user)
          present :data, students, with: Mobile::Entities::User
          present :status, 0
        end

        desc "返回单个课程"
        params do
          requires :id, type: Integer
        end
        route_param :id do
          get do
            cs = CoursesService.new
            course = cs.show_course params,current_user
            #course = Course.find(params[:id])
            {status: 0, data: course}
          end
        end

      end
    end
  end
end