class InstanceController < ApplicationController
  def create
    zone = create_instance_params
    public_id = Nanoid.generate(size: 6)
    name = Spicy::Proton.pair(" ")
    password = Nanoid.generate(size: 3, alphabet: "0123456789")
    instance = Instance.new(zone: zone, public_id: public_id, name: name, password: password)
    if instance.save
      @id = instance.public_id
      @password = instance.password
      render "set_password"
    end
  end

  def show
    @instance = Instance.includes(:pops).find_by(public_id: show_instance_params)
    @forecast = Weather.forecast(@instance.zone.to_sym)
  end

  def pop
    instance_id, nm, pwd = pop_instance_params
    parent_instance = Instance.find_by(public_id: instance_id)
    if parent_instance.password == pwd
      pop = Pop.new(instance_id: parent_instance.id, name: nm)
      if pop.save
        @instance = Instance.includes(:pops).find_by(public_id: instance_id)
        @forecast = Weather.forecast(@instance.zone.to_sym)
        render partial: "list", locals: { instance: @instance, forecast: @forecast }
      end
    end
  end

  def reset
    instance_id, nm, pwd = pop_instance_params
    parent_instance = Instance.find_by(public_id: instance_id)
    if parent_instance.password == pwd
      Pop.delete_by(instance_id: parent_instance.id, name: nm)
      @instance = Instance.includes(:pops).find_by(public_id: instance_id)
      @forecast = Weather.forecast(@instance.zone.to_sym)
      render partial: "list", locals: { instance: @instance, forecast: @forecast }
    end
  end

  def authenticate
    password, instance = auth_params
    inst = Instance.find_by(public_id: instance)
    if password == inst.password
      @id = inst.public_id
      @password = inst.password
      render "set_password"
    end
  end

  private

  def create_instance_params
    params.expect(:zone)
  end

  def show_instance_params
    params.expect(:public_id)
  end

  def pop_instance_params
    params.expect(:instance, :nm, :pwd)
  end

  def auth_params
    params.expect(:password, :instance)
  end
end