module CmAdmin::ViewHelpers::FormHelper

def form_with_all_fields(resource, method)
  columns = resource.class.columns.dup
  table_name = resource.model_name.collection
  columns.reject! { |i| REJECTABLE.include?(i.name) }
  url = CmAdmin::Engine.mount_path + "/#{table_name}/#{resource.id}"
  set_form_for_fields(resource, columns, url, method)
end

def form_with_mentioned_fields(resource, available_fields, method)
  # columns = resource.class.columns.select { |i| available_fields.map(&:field_name).include?(i.name.to_sym) }
  table_name = resource.model_name.collection
  # columns.reject! { |i| REJECTABLE.include?(i.name) }
  url = CmAdmin::Engine.mount_path + "/#{table_name}/#{resource.id}"
  set_form_for_fields(resource, available_fields, url, method)
end

def generate_form(resource, cm_model)
  if resource.new_record?
    action = :new
    method = :post
  else
    action = :edit
    method = :patch
  end
  if cm_model.available_fields[action].empty?
    return form_with_all_fields(resource, method)
  else
    return form_with_mentioned_fields(resource, cm_model.available_fields[action], method)
  end
end

def set_form_for_fields(resource, available_fields_hash, url, method)
  form_for(resource, url: url, method: method, html: { class: "cm_#{resource.class.name.downcase}_form" } ) do |f|
    if params[:referrer]
      concat f.text_field "referrer", class: "normal-input", hidden: true, value: params[:referrer], name: 'referrer'
    end
    if params[:polymorphic_name].present?
      concat f.text_field params[:polymorphic_name] + '_type', class: "normal-input", hidden: true, value: params[:associated_class].classify
      concat f.text_field params[:polymorphic_name] + '_id', class: "normal-input", hidden: true, value: params[:associated_id]
    elsif params[:associated_class] && params[:associated_id]
      concat f.text_field params[:associated_class] + '_id', class: "normal-input", hidden: true, value: params[:associated_id]
    end
    available_fields_hash.each do |key, fields_array|
      if key == :fields
        fields_array.each do |field|
          next unless field.display_if.call(f.object)
          if field.input_type.eql?(:hidden)
            concat input_field_for_column(f, field)
          else
            concat(content_tag(:div, class: "input-wrapper #{field.disabled ? 'disabled' : ''}") do
              concat f.label field.label, field.label, class: "field-label"
              concat tag.br
              concat(content_tag(:div, class: "datetime-wrapper") do
                concat input_field_for_column(f, field)
              end)
              concat tag.p resource.errors[field.field_name].first if resource.errors[field.field_name].present?
            end)
          end
        end
      else
        concat(render partial: '/cm_admin/main/nested_table_form', locals: {f: f, table_name: key})
      end
    end
    concat tag.br
    concat f.submit 'Save', class: 'cta-btn mt-3 form_submit', data: {form_class: "cm_#{f.object.class.name.downcase}_form"}
  end
end