grouped_orders_plugin.hpp

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/*
 * Copyright (c) 2018 Abit More, and contributors.
 *
 * The MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * THE SOFTWARE.
 */
#pragma once

#include <graphene/app/plugin.hpp>
#include <graphene/chain/database.hpp>

namespace graphene { namespace grouped_orders {
using namespace chain;

struct limit_order_group_key
{
   limit_order_group_key( const uint16_t g, const price& p ) : group(g), min_price(p) {}
   limit_order_group_key() {}

   uint16_t      group = 0; 
   price         min_price;

   friend bool operator < ( const limit_order_group_key& a, const limit_order_group_key& b )
   {
      // price is ordered descendingly, same as limit_order_index
      return std::tie( a.group, b.min_price ) < std::tie( b.group, a.min_price );
   }
   friend bool operator == ( const limit_order_group_key& a, const limit_order_group_key& b )
   {
      return std::tie( a.group, a.min_price ) == std::tie( b.group, b.min_price );
   }
};

struct limit_order_group_data
{
   limit_order_group_data( const price& p, const share_type s ) : max_price(p), total_for_sale(s) {}
   limit_order_group_data() {}

   price         max_price;
   share_type    total_for_sale; 
};

namespace detail
{
    class grouped_orders_plugin_impl;
}

class grouped_orders_plugin : public graphene::app::plugin
{
   public:
      explicit grouped_orders_plugin(graphene::app::application& app);
      ~grouped_orders_plugin() override;

      std::string plugin_name()const override;
      void plugin_set_program_options(
         boost::program_options::options_description& cli,
         boost::program_options::options_description& cfg) override;
      void plugin_initialize(
         const boost::program_options::variables_map& options) override;
      void plugin_startup() override;

      const flat_set<uint16_t>&   tracked_groups()const;

      const map< limit_order_group_key, limit_order_group_data >& limit_order_groups();

   private:
      std::unique_ptr<detail::grouped_orders_plugin_impl> my;
};

} } //graphene::grouped_orders

FC_REFLECT( graphene::grouped_orders::limit_order_group_key, (group)(min_price) )
FC_REFLECT( graphene::grouped_orders::limit_order_group_data, (max_price)(total_for_sale) )