class LibrariesController < ApplicationController
  layout 'base_library'

  before_filter :require_login, :except => [:index]

  def index
    libraries = Library.where(nil)

    libraries =
      if params[:type] == 'mine'
        libraries.where(user_id: current_user.id).order('created_at desc')
      else
        libraries.where(status: :published).order('visited_count desc')
      end

    search = params[:search].to_s.strip
    libraries = libraries.where('title LIKE :search OR uuid LIKE :search', search: "%#{search}%") if search.present?

    per_page = params[:per_page].to_i <= 0 ? 20 : params[:per_page].to_i
    @libraries = paginateHelper libraries.includes(user: :user_extensions), per_page
  end

  def show
    @library = Library.find(params[:id])
    return render_403 unless admin_or_self? || @library.published?

    @library_applies = @library.library_applies.where(status: :refused).order('created_at desc')
    @library.increment_visited_count!
  end

  def new
    @library = current_user.libraries.new
  end

  def create
    @library = current_user.libraries.new
    Libraries::SaveService.new(@library, current_user, form_params).call
    if with_publish?
      Libraries::SubmitService.new(@library).call
      redirect_to publish_success_libraries_path
    else
      flash[:message] = '保存成功'
      render 'new'
    end
  rescue ActiveRecord::RecordInvalid => _
    render 'new'
  rescue Libraries::SubmitService::Error => ex
    flash[:message] = ex.message
    render 'new'
  end

  def edit
    @library = current_library
    redirect_to library_path(id: @library.id) unless @library.editable?
  end

  def update
    @library = current_library
    Libraries::SaveService.new(@library, current_user, form_params).call
    if with_publish?
      Libraries::SubmitService.new(@library).call
      redirect_to publish_success_libraries_path
    else
      flash[:message] = '保存成功'
      render 'edit'
    end
  rescue ActiveRecord::RecordInvalid => _
    render 'edit'
  rescue Libraries::SubmitService::Error => ex
    flash[:message] = ex.message
    render 'edit'
  end

  def publish
    Libraries::SubmitService.new(current_library).call
    render json: { status: 0 }
  rescue Libraries::SubmitService::Error => ex
    render json: { status: 0, message: ex.message }
  end

  def publish_success
  end

  private

  def current_library
    @_current_library ||= current_user.libraries.find(params[:id])
  end

  def form_params
    @_form_params ||= begin
      hash = params[:library].presence || {}
      hash[:attachment_ids] = (params[:attachments].presence || []).values.map{|h| h[:attachment_id]}
      hash
    end
  end

  def with_publish?
    params[:apply_publish].to_s == 'true'
  end

  def admin_or_self?
    @library.user_id == current_user.id || current_user.admin?
  end
end