module CmPageBuilder::Rails
  class Page < ApplicationRecord
    belongs_to :container, polymorphic: true
    has_many :page_components, dependent: :destroy

    accepts_nested_attributes_for :page_components, allow_destroy: true

    def get_components
      page_components.with_attached_component_attachment.select(:id, :uuid, :component_type, :position, :content).map do |component|
        json_component = component.as_json.transform_keys! {|key| key.camelize(:lower)}
        json_component["id"] = component[:uuid]
        json_component["component_attachment"] = _get_attachment(component)
        json_component
      end
    end

    def duplicate
      dupl = self.dup
      dupl.page_components = self.page_components.map do |pc|
        pc.duplicate
      end
      dupl
    end

    def save_content(component_json)
      components = JSON.parse component_json
      deleted_components = page_components.where.not(
        uuid: components.map { |component| component["id"] }
      )
      deleted_components.delete_all
      components.each do |component|
        _save_component(component)
      end
    end

    def _get_attachment(component)
      attachment = component.component_attachment.attachment
      if attachment
        attachment_data = {
          filename: attachment.filename.to_s,
          url: attachment.service_url
        }
        dimensions = attachment.blob.metadata
        if dimensions['width']
          dimensions['orientation'] =
            if dimensions['width'] > dimensions['height']
              'landscape'
            else
              'portrait'
            end
          attachment_data["dimensions"] = dimensions
        end
        attachment_data
      end
    end

    def _save_component(component)
      page_component = page_components.find_or_initialize_by(uuid: component["id"])
      signed_id = component.dig("component_attachment", "signed_id")
      component_data = {
        content: component["content"],
        position: component["position"],
        component_type: component["componentType"]
      }
      component_data[:component_attachment] = signed_id if signed_id
      page_component.update!(component_data)
    end
  end
end