text: /*
   * Copyright (c) 2015 Cryptonomex, Inc., 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.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include <omo/chain/database.hpp>
  #include <omo/chain/global_property_object.hpp>
  #include <omo/chain/producer_object.hpp>
  
  namespace omo { namespace chain {
  
  using boost::container::flat_set;
  
  producer_id_type database::get_scheduled_producer(uint32_t slot_num)const
  {
     const dynamic_global_property_object& dpo = get_dynamic_global_properties();
     uint64_t current_aslot = dpo.current_aslot + slot_num;
     const auto& gpo = get<global_property_object>();
     return gpo.active_producers[ current_aslot % gpo.active_producers.size() ];
  }
  
  fc::time_point_sec database::get_slot_time(uint32_t slot_num)const
  {
     if( slot_num == 0 )
        return fc::time_point_sec();
  
     auto interval = block_interval();
     const dynamic_global_property_object& dpo = get_dynamic_global_properties();
  
     if( head_block_num() == 0 )
     {
        // n.b. first block is at genesis_time plus one block interval
        fc::time_point_sec genesis_time = dpo.time;
        return genesis_time + slot_num * interval;
     }
  
     int64_t head_block_abs_slot = head_block_time().sec_since_epoch() / interval;
     fc::time_point_sec head_slot_time(head_block_abs_slot * interval);
  
     const global_property_object& gpo = get_global_properties();
  
     if( dpo.dynamic_flags & dynamic_global_property_object::maintenance_flag )
        slot_num += gpo.parameters.maintenance_skip_slots;
  
     // "slot 0" is head_slot_time
     // "slot 1" is head_slot_time,
     //   plus maint interval if head block is a maint block
     //   plus block interval if head block is not a maint block
     return head_slot_time + (slot_num * interval);
  }
  
  uint32_t database::get_slot_at_time(fc::time_point_sec when)const
  {
     fc::time_point_sec first_slot_time = get_slot_time( 1 );
     if( when < first_slot_time )
        return 0;
     return (when - first_slot_time).to_seconds() / block_interval() + 1;
  }
  
  uint32_t database::producer_participation_rate()const
  {
     const dynamic_global_property_object& dpo = get_dynamic_global_properties();
     return uint64_t(OMO_100_PERCENT) * dpo.recent_slots_filled.popcount() / 128;
  }
  
  void database::update_producer_schedule()
  {
  }
  
  } }
  