# frozen_string_literal: true

class ApplicationRecord < ActiveRecord::Base
  primary_abstract_class

  module ApiMethods
    extend ActiveSupport::Concern

    def as_json(options = {})
      options ||= {}
      options[:except] ||= []
      options[:except] += hidden_attributes

      options[:methods] ||= []
      options[:methods] += method_attributes

      super(options)
    end

    def serializable_hash(*args)
      hash = super(*args)
      hash.transform_keys { |key| key.delete("?") }
    end

    protected

    def hidden_attributes
      %i[uploader_ip_addr updater_ip_addr creator_ip_addr user_ip_addr ip_addr]
    end

    def method_attributes
      []
    end
  end

  module UserMethods
    def belongs_to_creator(options = {})
      field = options.delete(:field) || :creator
      class_eval do
        belongs_to(field, **options.merge(class_name: "APIUser"))
        before_validation(on: :create) do |rec|
          rec.send("#{field}_id=", CurrentUser.id) if rec.send("#{field}_id").nil?
          rec.send("#{field}_ip_addr=", CurrentUser.ip_addr) if rec.respond_to?(:"#{field}_ip_addr=") && rec.send("#{field}_ip_addr").nil?
        end
      end
    end
  end

  module SearchMethods
    def attribute_matches(attribute, value, **)
      return all if value.nil?

      column = column_for_attribute(attribute)
      case column.sql_type_metadata.type
      when :boolean
        boolean_attribute_matches(attribute, value, **)
      when :integer, :datetime
        numeric_attribute_matches(attribute, value, **)
      when :string, :text
        text_attribute_matches(attribute, value, **)
      else
        raise(ArgumentError, "unhandled attribute type")
      end
    end

    def boolean_attribute_matches(attribute, value)
      if value.to_s.truthy?
        value = true
      elsif value.to_s.falsy?
        value = false
      else
        raise(ArgumentError, "value must be truthy or falsy")
      end

      where(attribute => value)
    end

    # range: "5", ">5", "<5", ">=5", "<=5", "5..10", "5,6,7"
    def numeric_attribute_matches(attribute, range)
      column = column_for_attribute(attribute)
      qualified_column = "#{table_name}.#{column.name}"
      parsed_range = ParseValue.range(range, column.type)

      add_range_relation(parsed_range, qualified_column)
    end

    def add_range_relation(arr, field)
      return all if arr.nil?

      case arr[0]
      when :eq
        if arr[1].is_a?(Time)
          where("#{field} between ? and ?", arr[1].beginning_of_day, arr[1].end_of_day)
        else
          where(["#{field} = ?", arr[1]])
        end
      when :gt
        where(["#{field} > ?", arr[1]])
      when :gte
        where(["#{field} >= ?", arr[1]])
      when :lt
        where(["#{field} < ?", arr[1]])
      when :lte
        where(["#{field} <= ?", arr[1]])
      when :in
        where(["#{field} in (?)", arr[1]])
      when :between
        where(["#{field} BETWEEN ? AND ?", arr[1], arr[2]])
      else
        all
      end
    end

    def text_attribute_matches(attribute, value, convert_to_wildcard: false)
      column = column_for_attribute(attribute)
      qualified_column = "#{table_name}.#{column.name}"
      value = "*#{value}*" if convert_to_wildcard && value.exclude?("*")

      if value =~ /\*/
        where("lower(#{qualified_column}) LIKE :value ESCAPE E'\\\\'", value: value.downcase.to_escaped_for_sql_like)
      else
        where("to_tsvector(:ts_config, #{qualified_column}) @@ plainto_tsquery(:ts_config, :value)", ts_config: "english", value: value)
      end
    end

    def apply_basic_order(params)
      case params[:order]
      when "id_asc"
        order(id: :asc)
      when "id_desc"
        order(id: :desc)
      else
        default_order
      end
    end

    def default_order
      order(id: :desc)
    end

    def search(params)
      params ||= {}

      q = all
      q = q.attribute_matches(:id, params[:id])
      q = q.attribute_matches(:created_at, params[:created_at]) if attribute_names.include?("created_at")
      q = q.attribute_matches(:updated_at, params[:updated_at]) if attribute_names.include?("updated_at")

      q
    end
  end

  include ApiMethods
  extend SearchMethods
  extend UserMethods
end