/*
 * 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 <graphene/chain/database.hpp>
#include <graphene/chain/account_object.hpp>
#include <graphene/chain/proposal_object.hpp>
#include <graphene/chain/hardfork.hpp>

namespace graphene { namespace chain {

bool proposal_object::is_authorized_to_execute( database& db ) const
{
   transaction_evaluation_state dry_run_eval( &db );

   try {
      verify_authority( proposed_transaction.operations, 
                        available_key_approvals,
                        [&]( account_id_type id ){ return &id(db).active; },
                        [&]( account_id_type id ){ return &id(db).owner;  },
                        [&]( account_id_type id, const operation& op ){
                           return db.get_account_custom_authorities(id, op); },
                        MUST_IGNORE_CUSTOM_OP_REQD_AUTHS( db.head_block_time() ),
                        db.get_global_properties().parameters.max_authority_depth,
                        true, /* allow committee */
                        available_active_approvals,
                        available_owner_approvals );
   } 
   catch ( const fc::exception& e )
   {
      return false;
   }
   return true;
}

void required_approval_index::object_inserted( const object& obj )
{
    assert( dynamic_cast<const proposal_object*>(&obj) );
    const proposal_object& p = static_cast<const proposal_object&>(obj);

    for( const auto& a : p.required_active_approvals )
       _account_to_proposals[a].insert( p.id );
    for( const auto& a : p.required_owner_approvals )
       _account_to_proposals[a].insert( p.id );
    for( const auto& a : p.available_active_approvals )
       _account_to_proposals[a].insert( p.id );
    for( const auto& a : p.available_owner_approvals )
       _account_to_proposals[a].insert( p.id );
}

void required_approval_index::remove( account_id_type a, proposal_id_type p )
{
    auto itr = _account_to_proposals.find(a);
    if( itr != _account_to_proposals.end() )
    {
        itr->second.erase( p );
        if( itr->second.empty() )
            _account_to_proposals.erase( itr->first );
    }
}

void required_approval_index::object_removed( const object& obj )
{
    assert( dynamic_cast<const proposal_object*>(&obj) );
    const proposal_object& p = static_cast<const proposal_object&>(obj);

    for( const auto& a : p.required_active_approvals )
       remove( a, p.id );
    for( const auto& a : p.required_owner_approvals )
       remove( a, p.id );
    for( const auto& a : p.available_active_approvals )
       remove( a, p.id );
    for( const auto& a : p.available_owner_approvals )
       remove( a, p.id );
}

} } // graphene::chain

GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::proposal_object )
