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#include "pending_transaction.h"

#include <stdexcept>
#include "backend.h"
#include "byte_slice.h"   // monero/contrib/epee/include
#include "cryptonote_basic/cryptonote_format_utils.h" // monero/src
#include "error.h"
#include "numeric.h"
#include "string_tools.h" // monero/contrib/epee/include


namespace lwsf { namespace internal
{
  namespace
  {
    cryptonote::transaction get_tx(expect<cryptonote::transaction>&& source)
    {
      if (source)
        return {std::move(*source)};
      return {};
    }
  }
  pending_transaction::pending_transaction(std::shared_ptr<backend::wallet> wallet, std::string error, std::vector<std::shared_ptr<backend::transaction>> local)
    : wallet_(std::move(wallet)), local_(std::move(local)), error_(std::move(error))
  {
    if (!wallet_)
      throw std::invalid_argument{"lwsf::internal::pending_transaction cannot be given nullptr backend"};

    for (const auto& e : local)
    {
      if (!e)
        throw std::invalid_argument{"lwsf::internal::pending_transaction cannot be given nullptr backend::transaction"};
    }
  }

  pending_transaction::~pending_transaction()
  {}

  int pending_transaction::status() const
  {
    return error_.empty() ? Status_Ok : Status_Error;
  }

  bool pending_transaction::commit(const std::string &filename, bool)
  {
    // saving to file not yet implemented
    if (!error_.empty() || !filename.empty())
      return false;

    for (auto e : local_)
    {
      const std::error_code error = wallet_->send_tx(e->raw_bytes.clone());
      if (error)
      {
        error_ = error.message();
        return false;
      }
      const boost::lock_guard<boost::mutex> lock{wallet_->sync};
      auto entry = wallet_->primary.txes.try_emplace(e->id).first;
      if (!entry->second)
        entry->second = std::move(e);
    }

    return true;
  }

  std::uint64_t pending_transaction::amount() const
  {
    safe_uint64_t out{};
    for (const auto& e : local_)
      out += e->amount;
    return out;
  }

  std::uint64_t pending_transaction::fee() const
  {
    safe_uint64_t out{};
    for (const auto& e : local_)
      out += e->fee;
    return out;
  }

  std::vector<std::string> pending_transaction::txid() const
  {
    std::vector<std::string> out;
    for (const auto& e : local_)
      out.push_back(epee::to_hex::string(epee::as_byte_span(e->id)));
    return out;
  }
}} // lwsf // internal