forgeplus/app/controllers/forks_controller.rb

class ForksController < ApplicationController
  before_action :require_login
  before_action :require_profile_completed, only: [:create]
  before_action :load_project
  before_action :authenticate_project!, :authenticate_user!

  def create
    @new_project = Projects::ForkService.new(current_user, @project, params[:organization], params[:new_name], params[:new_identifier]).call
  end

  private
  def authenticate_project!
    if current_user&.id == @project.user_id
      render_result(-1, "自己不能fork自己的项目")
    elsif @project.fork_users.where(user_id: current_user.id).present?
      fork = @project.fork_users.find_by(user_id: current_user.id)
      render json: { status: 0, id: fork.fork_project_id,  identifier: fork.fork_project&.identifier, message: "fork失败，你已拥有了这个项目 #{fork.fork_project&.identifier}" }
      return
    elsif Project.exists?(user_id: current_user.id, identifier: @project.identifier)
      render_result(0, "fork失败，你已拥有了这个项目")
    end
    # return if current_user != @project.owner
    # render_result(-1, "自己不能fork自己的项目")
  end

  def authenticate_user!
    return if @project.is_public
    return if @project.member?(current_user) || current_user.admin?
    render_forbidden('你没有权限操作')
  end
end