proposal_factory.hpp

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#ifndef IROHA_PROPOSAL_FACTORY_HPP
#define IROHA_PROPOSAL_FACTORY_HPP

#include <memory>

#include <boost/range/any_range.hpp>
#include "common/result.hpp"
#include "interfaces/common_objects/types.hpp"

namespace shared_model {
  namespace interface {
    class Proposal;

    class ProposalFactory {
     public:
      template <typename T>
      using FactoryResult = iroha::expected::Result<T, std::string>;

      using TransactionsCollectionType =
          boost::any_range<Transaction,
                           boost::forward_traversal_tag,
                           const Transaction &>;

      virtual FactoryResult<std::unique_ptr<Proposal>> createProposal(
          types::HeightType height,
          types::TimestampType created_time,
          TransactionsCollectionType transactions) = 0;

      virtual ~ProposalFactory() = default;
    };
  }  // namespace interface
}  // namespace shared_model

#endif  // IROHA_PROPOSAL_FACTORY_HPP