text: //
  // Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  #include "td/telegram/Payments.h"
  
  #include "td/telegram/td_api.h"
  #include "td/telegram/telegram_api.h"
  
  #include "td/telegram/ContactsManager.h"
  #include "td/telegram/Global.h"
  #include "td/telegram/MessageId.h"
  #include "td/telegram/misc.h"
  #include "td/telegram/PasswordManager.h"
  #include "td/telegram/Td.h"
  #include "td/telegram/UpdatesManager.h"
  
  #include "td/utils/buffer.h"
  #include "td/utils/common.h"
  #include "td/utils/format.h"
  #include "td/utils/JsonBuilder.h"
  #include "td/utils/logging.h"
  #include "td/utils/misc.h"
  #include "td/utils/Status.h"
  
  namespace td {
  
  class SetBotShippingAnswerQuery : public Td::ResultHandler {
    Promise<Unit> promise_;
  
   public:
    explicit SetBotShippingAnswerQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
    }
  
    void send(int64 shipping_query_id, const string &error_message,
              vector<tl_object_ptr<telegram_api::shippingOption>> &&shipping_options) {
      int32 flags = 0;
      if (!error_message.empty()) {
        flags |= telegram_api::messages_setBotShippingResults::ERROR_MASK;
      }
      if (!shipping_options.empty()) {
        flags |= telegram_api::messages_setBotShippingResults::SHIPPING_OPTIONS_MASK;
      }
      send_query(G()->net_query_creator().create(create_storer(telegram_api::messages_setBotShippingResults(
          flags, shipping_query_id, error_message, std::move(shipping_options)))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::messages_setBotShippingResults>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      bool result = result_ptr.ok();
      if (!result) {
        LOG(INFO) << "Sending answer to a shipping query has failed";
      }
      promise_.set_value(Unit());
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class SetBotPreCheckoutAnswerQuery : public Td::ResultHandler {
    Promise<Unit> promise_;
  
   public:
    explicit SetBotPreCheckoutAnswerQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
    }
  
    void send(int64 pre_checkout_query_id, const string &error_message) {
      int32 flags = 0;
      if (!error_message.empty()) {
        flags |= telegram_api::messages_setBotPrecheckoutResults::ERROR_MASK;
      } else {
        flags |= telegram_api::messages_setBotPrecheckoutResults::SUCCESS_MASK;
      }
  
      send_query(G()->net_query_creator().create(create_storer(telegram_api::messages_setBotPrecheckoutResults(
          flags, false /*ignored*/, pre_checkout_query_id, error_message))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::messages_setBotPrecheckoutResults>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      bool result = result_ptr.ok();
      if (!result) {
        LOG(INFO) << "Sending answer to a pre-checkout query has failed";
      }
      promise_.set_value(Unit());
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  static tl_object_ptr<td_api::invoice> convert_invoice(tl_object_ptr<telegram_api::invoice> invoice) {
    CHECK(invoice != nullptr);
  
    vector<tl_object_ptr<td_api::labeledPricePart>> labeled_prices;
    labeled_prices.reserve(invoice->prices_.size());
    for (auto &labeled_price : invoice->prices_) {
      labeled_prices.push_back(
          make_tl_object<td_api::labeledPricePart>(std::move(labeled_price->label_), labeled_price->amount_));
    }
  
    bool is_test = (invoice->flags_ & telegram_api::invoice::TEST_MASK) != 0;
    bool need_name = (invoice->flags_ & telegram_api::invoice::NAME_REQUESTED_MASK) != 0;
    bool need_phone_number = (invoice->flags_ & telegram_api::invoice::PHONE_REQUESTED_MASK) != 0;
    bool need_email_address = (invoice->flags_ & telegram_api::invoice::EMAIL_REQUESTED_MASK) != 0;
    bool need_shipping_address = (invoice->flags_ & telegram_api::invoice::SHIPPING_ADDRESS_REQUESTED_MASK) != 0;
    bool send_phone_number_to_provider = (invoice->flags_ & telegram_api::invoice::PHONE_TO_PROVIDER_MASK) != 0;
    bool send_email_address_to_provider = (invoice->flags_ & telegram_api::invoice::EMAIL_TO_PROVIDER_MASK) != 0;
    bool is_flexible = (invoice->flags_ & telegram_api::invoice::FLEXIBLE_MASK) != 0;
    if (send_phone_number_to_provider) {
      need_phone_number = true;
    }
    if (send_email_address_to_provider) {
      need_email_address = true;
    }
    if (is_flexible) {
      need_shipping_address = true;
    }
  
    return make_tl_object<td_api::invoice>(std::move(invoice->currency_), std::move(labeled_prices), is_test, need_name,
                                           need_phone_number, need_email_address, need_shipping_address,
                                           send_phone_number_to_provider, send_email_address_to_provider, is_flexible);
  }
  
  static tl_object_ptr<td_api::paymentsProviderStripe> convert_payment_provider(
      const string &native_provider_name, tl_object_ptr<telegram_api::dataJSON> native_parameters) {
    if (native_parameters == nullptr) {
      return nullptr;
    }
  
    if (native_provider_name == "stripe") {
      string data = native_parameters->data_;
      auto r_value = json_decode(data);
      if (r_value.is_error()) {
        LOG(ERROR) << "Can't parse json object \"" << native_parameters->data_ << "\": " << r_value.error();
        return nullptr;
      }
  
      auto value = r_value.move_as_ok();
      if (value.type() != JsonValue::Type::Object) {
        LOG(ERROR) << "Wrong JSON data \"" << native_parameters->data_ << '"';
        return nullptr;
      }
  
      auto r_need_country = get_json_object_bool_field(value.get_object(), "need_country", false);
      auto r_need_postal_code = get_json_object_bool_field(value.get_object(), "need_zip", false);
      auto r_need_cardholder_name = get_json_object_bool_field(value.get_object(), "need_cardholder_name", false);
      auto r_publishable_key = get_json_object_string_field(value.get_object(), "publishable_key", false);
  
      if (value.get_object().size() != 4 || r_need_country.is_error() || r_need_postal_code.is_error() ||
          r_need_cardholder_name.is_error() || r_publishable_key.is_error()) {
        LOG(WARNING) << "Unsupported JSON data \"" << native_parameters->data_ << '"';
        return nullptr;
      }
  
      return make_tl_object<td_api::paymentsProviderStripe>(r_publishable_key.move_as_ok(), r_need_country.move_as_ok(),
                                                            r_need_postal_code.move_as_ok(),
                                                            r_need_cardholder_name.move_as_ok());
    }
  
    return nullptr;
  }
  
  static tl_object_ptr<td_api::shippingAddress> convert_shipping_address(
      tl_object_ptr<telegram_api::postAddress> address) {
    if (address == nullptr) {
      return nullptr;
    }
    return make_tl_object<td_api::shippingAddress>(std::move(address->country_iso2_), std::move(address->state_),
                                                   std::move(address->city_), std::move(address->street_line1_),
                                                   std::move(address->street_line2_), std::move(address->post_code_));
  }
  
  static tl_object_ptr<telegram_api::postAddress> convert_shipping_address(
      tl_object_ptr<td_api::shippingAddress> address) {
    if (address == nullptr) {
      return nullptr;
    }
    return make_tl_object<telegram_api::postAddress>(std::move(address->country_code_), std::move(address->state_),
                                                     std::move(address->city_), std::move(address->street_line1_),
                                                     std::move(address->street_line2_), std::move(address->postal_code_));
  }
  
  static tl_object_ptr<td_api::orderInfo> convert_order_info(
      tl_object_ptr<telegram_api::paymentRequestedInfo> order_info) {
    if (order_info == nullptr) {
      return nullptr;
    }
    return make_tl_object<td_api::orderInfo>(std::move(order_info->name_), std::move(order_info->phone_),
                                             std::move(order_info->email_),
                                             convert_shipping_address(std::move(order_info->shipping_address_)));
  }
  
  static tl_object_ptr<td_api::labeledPricePart> convert_labeled_price(
      tl_object_ptr<telegram_api::labeledPrice> labeled_price) {
    CHECK(labeled_price != nullptr);
    return make_tl_object<td_api::labeledPricePart>(std::move(labeled_price->label_), labeled_price->amount_);
  }
  
  static tl_object_ptr<td_api::shippingOption> convert_shipping_option(
      tl_object_ptr<telegram_api::shippingOption> shipping_option) {
    if (shipping_option == nullptr) {
      return nullptr;
    }
  
    return make_tl_object<td_api::shippingOption>(std::move(shipping_option->id_), std::move(shipping_option->title_),
                                                  transform(std::move(shipping_option->prices_), convert_labeled_price));
  }
  
  static tl_object_ptr<telegram_api::paymentRequestedInfo> convert_order_info(
      tl_object_ptr<td_api::orderInfo> order_info) {
    if (order_info == nullptr) {
      return nullptr;
    }
    int32 flags = 0;
    if (!order_info->name_.empty()) {
      flags |= telegram_api::paymentRequestedInfo::NAME_MASK;
    }
    if (!order_info->phone_number_.empty()) {
      flags |= telegram_api::paymentRequestedInfo::PHONE_MASK;
    }
    if (!order_info->email_address_.empty()) {
      flags |= telegram_api::paymentRequestedInfo::EMAIL_MASK;
    }
    if (order_info->shipping_address_ != nullptr) {
      flags |= telegram_api::paymentRequestedInfo::SHIPPING_ADDRESS_MASK;
    }
    return make_tl_object<telegram_api::paymentRequestedInfo>(
        flags, std::move(order_info->name_), std::move(order_info->phone_number_), std::move(order_info->email_address_),
        convert_shipping_address(std::move(order_info->shipping_address_)));
  }
  
  static tl_object_ptr<td_api::savedCredentials> convert_saved_credentials(
      tl_object_ptr<telegram_api::paymentSavedCredentialsCard> saved_credentials) {
    if (saved_credentials == nullptr) {
      return nullptr;
    }
    return make_tl_object<td_api::savedCredentials>(std::move(saved_credentials->id_),
                                                    std::move(saved_credentials->title_));
  }
  
  class GetPaymentFormQuery : public Td::ResultHandler {
    Promise<tl_object_ptr<td_api::paymentForm>> promise_;
  
   public:
    explicit GetPaymentFormQuery(Promise<tl_object_ptr<td_api::paymentForm>> &&promise) : promise_(std::move(promise)) {
    }
  
    void send(ServerMessageId server_message_id) {
      send_query(
          G()->net_query_creator().create(create_storer(telegram_api::payments_getPaymentForm(server_message_id.get()))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_getPaymentForm>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      auto payment_form = result_ptr.move_as_ok();
      LOG(INFO) << "Receive payment form: " << to_string(payment_form);
  
      td->contacts_manager_->on_get_users(std::move(payment_form->users_));
  
      bool can_save_credentials =
          (payment_form->flags_ & telegram_api::payments_paymentForm::CAN_SAVE_CREDENTIALS_MASK) != 0;
      bool need_password = (payment_form->flags_ & telegram_api::payments_paymentForm::PASSWORD_MISSING_MASK) != 0;
      promise_.set_value(make_tl_object<td_api::paymentForm>(
          convert_invoice(std::move(payment_form->invoice_)), std::move(payment_form->url_),
          convert_payment_provider(payment_form->native_provider_, std::move(payment_form->native_params_)),
          convert_order_info(std::move(payment_form->saved_info_)),
          convert_saved_credentials(std::move(payment_form->saved_credentials_)), can_save_credentials, need_password));
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class ValidateRequestedInfoQuery : public Td::ResultHandler {
    Promise<tl_object_ptr<td_api::validatedOrderInfo>> promise_;
  
   public:
    explicit ValidateRequestedInfoQuery(Promise<tl_object_ptr<td_api::validatedOrderInfo>> &&promise)
        : promise_(std::move(promise)) {
    }
  
    void send(ServerMessageId server_message_id, tl_object_ptr<telegram_api::paymentRequestedInfo> requested_info,
              bool allow_save) {
      int32 flags = 0;
      if (allow_save) {
        flags |= telegram_api::payments_validateRequestedInfo::SAVE_MASK;
      }
      if (requested_info == nullptr) {
        requested_info = make_tl_object<telegram_api::paymentRequestedInfo>();
        requested_info->flags_ = 0;
      }
      send_query(G()->net_query_creator().create(create_storer(telegram_api::payments_validateRequestedInfo(
          flags, false /*ignored*/, server_message_id.get(), std::move(requested_info)))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_validateRequestedInfo>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      auto validated_order_info = result_ptr.move_as_ok();
      LOG(INFO) << "Receive validated order info: " << to_string(validated_order_info);
  
      promise_.set_value(make_tl_object<td_api::validatedOrderInfo>(
          std::move(validated_order_info->id_),
          transform(std::move(validated_order_info->shipping_options_), convert_shipping_option)));
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class SendPaymentFormQuery : public Td::ResultHandler {
    Promise<tl_object_ptr<td_api::paymentResult>> promise_;
  
   public:
    explicit SendPaymentFormQuery(Promise<tl_object_ptr<td_api::paymentResult>> &&promise)
        : promise_(std::move(promise)) {
    }
  
    void send(ServerMessageId server_message_id, const string &order_info_id, const string &shipping_option_id,
              tl_object_ptr<telegram_api::InputPaymentCredentials> input_credentials) {
      CHECK(input_credentials != nullptr);
      int32 flags = 0;
      if (!order_info_id.empty()) {
        flags |= telegram_api::payments_sendPaymentForm::REQUESTED_INFO_ID_MASK;
      }
      if (!shipping_option_id.empty()) {
        flags |= telegram_api::payments_sendPaymentForm::SHIPPING_OPTION_ID_MASK;
      }
      send_query(G()->net_query_creator().create(create_storer(telegram_api::payments_sendPaymentForm(
          flags, server_message_id.get(), order_info_id, shipping_option_id, std::move(input_credentials)))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_sendPaymentForm>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      auto payment_result = result_ptr.move_as_ok();
      LOG(INFO) << "Receive payment result: " << to_string(payment_result);
  
      switch (payment_result->get_id()) {
        case telegram_api::payments_paymentResult::ID: {
          auto result = move_tl_object_as<telegram_api::payments_paymentResult>(payment_result);
          G()->td().get_actor_unsafe()->updates_manager_->on_get_updates(std::move(result->updates_));
          promise_.set_value(make_tl_object<td_api::paymentResult>(true, string()));
          return;
        }
        case telegram_api::payments_paymentVerficationNeeded::ID: {
          auto result = move_tl_object_as<telegram_api::payments_paymentVerficationNeeded>(payment_result);
          promise_.set_value(make_tl_object<td_api::paymentResult>(false, std::move(result->url_)));
          return;
        }
        default:
          UNREACHABLE();
      }
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class GetPaymentReceiptQuery : public Td::ResultHandler {
    Promise<tl_object_ptr<td_api::paymentReceipt>> promise_;
  
   public:
    explicit GetPaymentReceiptQuery(Promise<tl_object_ptr<td_api::paymentReceipt>> &&promise)
        : promise_(std::move(promise)) {
    }
  
    void send(ServerMessageId server_message_id) {
      send_query(G()->net_query_creator().create(
          create_storer(telegram_api::payments_getPaymentReceipt(server_message_id.get()))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_getPaymentReceipt>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      auto payment_receipt = result_ptr.move_as_ok();
      LOG(INFO) << "Receive payment receipt: " << to_string(payment_receipt);
  
      td->contacts_manager_->on_get_users(std::move(payment_receipt->users_));
  
      UserId payments_provider_user_id(payment_receipt->provider_id_);
      if (!payments_provider_user_id.is_valid()) {
        LOG(ERROR) << "Receive invalid payments provider " << payments_provider_user_id;
        payments_provider_user_id = UserId();
      }
  
      promise_.set_value(make_tl_object<td_api::paymentReceipt>(
          payment_receipt->date_,
          G()->td().get_actor_unsafe()->contacts_manager_->get_user_id_object(payments_provider_user_id,
                                                                              "paymentReceipt"),
          convert_invoice(std::move(payment_receipt->invoice_)), convert_order_info(std::move(payment_receipt->info_)),
          convert_shipping_option(std::move(payment_receipt->shipping_)),
          std::move(payment_receipt->credentials_title_)));
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class GetSavedInfoQuery : public Td::ResultHandler {
    Promise<tl_object_ptr<td_api::orderInfo>> promise_;
  
   public:
    explicit GetSavedInfoQuery(Promise<tl_object_ptr<td_api::orderInfo>> &&promise) : promise_(std::move(promise)) {
    }
  
    void send() {
      send_query(G()->net_query_creator().create(create_storer(telegram_api::payments_getSavedInfo())));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_getSavedInfo>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      auto saved_info = result_ptr.move_as_ok();
      LOG(INFO) << "Receive saved info: " << to_string(saved_info);
      promise_.set_value(convert_order_info(std::move(saved_info->saved_info_)));
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  class ClearSavedInfoQuery : public Td::ResultHandler {
    Promise<Unit> promise_;
  
   public:
    explicit ClearSavedInfoQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
    }
  
    void send(bool clear_credentials, bool clear_order_info) {
      CHECK(clear_credentials || clear_order_info);
      int32 flags = 0;
      if (clear_credentials) {
        flags |= telegram_api::payments_clearSavedInfo::CREDENTIALS_MASK;
      }
      if (clear_order_info) {
        flags |= telegram_api::payments_clearSavedInfo::INFO_MASK;
      }
      send_query(G()->net_query_creator().create(
          create_storer(telegram_api::payments_clearSavedInfo(flags, false /*ignored*/, false /*ignored*/))));
    }
  
    void on_result(uint64 id, BufferSlice packet) override {
      auto result_ptr = fetch_result<telegram_api::payments_clearSavedInfo>(packet);
      if (result_ptr.is_error()) {
        return on_error(id, result_ptr.move_as_error());
      }
  
      promise_.set_value(Unit());
    }
  
    void on_error(uint64 id, Status status) override {
      promise_.set_error(std::move(status));
    }
  };
  
  bool operator==(const LabeledPricePart &lhs, const LabeledPricePart &rhs) {
    return lhs.label == rhs.label && lhs.amount == rhs.amount;
  }
  
  bool operator!=(const LabeledPricePart &lhs, const LabeledPricePart &rhs) {
    return !(lhs == rhs);
  }
  
  StringBuilder &operator<<(StringBuilder &string_builder, const LabeledPricePart &labeled_price_part) {
    return string_builder << "[" << labeled_price_part.label << ": " << labeled_price_part.amount << "]";
  }
  
  bool operator==(const Invoice &lhs, const Invoice &rhs) {
    return lhs.is_test == rhs.is_test && lhs.need_name == rhs.need_name &&
           lhs.need_phone_number == rhs.need_phone_number && lhs.need_email_address == rhs.need_email_address &&
           lhs.need_shipping_address == rhs.need_shipping_address &&
           lhs.send_phone_number_to_provider == rhs.send_phone_number_to_provider &&
           lhs.send_email_address_to_provider == rhs.send_email_address_to_provider &&
           lhs.is_flexible == rhs.is_flexible && lhs.currency == rhs.currency && lhs.price_parts == rhs.price_parts;
  }
  
  bool operator!=(const Invoice &lhs, const Invoice &rhs) {
    return !(lhs == rhs);
  }
  
  StringBuilder &operator<<(StringBuilder &string_builder, const Invoice &invoice) {
    return string_builder << "[" << (invoice.is_flexible ? "Flexible" : "") << (invoice.is_test ? "Test" : "")
                          << "Invoice" << (invoice.need_name ? ", needs name" : "")
                          << (invoice.need_phone_number ? ", needs phone number" : "")
                          << (invoice.need_email_address ? ", needs email address" : "")
                          << (invoice.need_shipping_address ? ", needs shipping address" : "")
                          << (invoice.send_phone_number_to_provider ? ", sends phone number to provider" : "")
                          << (invoice.send_email_address_to_provider ? ", sends email address to provider" : "") << " in "
                          << invoice.currency << " with price parts " << format::as_array(invoice.price_parts) << "]";
  }
  
  bool operator==(const ShippingAddress &lhs, const ShippingAddress &rhs) {
    return lhs.country_code == rhs.country_code && lhs.state == rhs.state && lhs.city == rhs.city &&
           lhs.street_line1 == rhs.street_line1 && lhs.street_line2 == rhs.street_line2 &&
           lhs.postal_code == rhs.postal_code;
  }
  
  bool operator!=(const ShippingAddress &lhs, const ShippingAddress &rhs) {
    return !(lhs == rhs);
  }
  
  StringBuilder &operator<<(StringBuilder &string_builder, const ShippingAddress &shipping_address) {
    return string_builder << "[Address " << tag("country_code", shipping_address.country_code)
                          << tag("state", shipping_address.state) << tag("city", shipping_address.city)
                          << tag("street_line1", shipping_address.street_line1)
                          << tag("street_line2", shipping_address.street_line2)
                          << tag("postal_code", shipping_address.postal_code) << "]";
  }
  
  unique_ptr<ShippingAddress> get_shipping_address(tl_object_ptr<telegram_api::postAddress> address) {
    if (address == nullptr) {
      return nullptr;
    }
    return make_unique<ShippingAddress>(std::move(address->country_iso2_), std::move(address->state_),
                                        std::move(address->city_), std::move(address->street_line1_),
                                        std::move(address->street_line2_), std::move(address->post_code_));
  }
  
  tl_object_ptr<td_api::shippingAddress> get_shipping_address_object(
      const unique_ptr<ShippingAddress> &shipping_address) {
    if (shipping_address == nullptr) {
      return nullptr;
    }
    return make_tl_object<td_api::shippingAddress>(shipping_address->country_code, shipping_address->state,
                                                   shipping_address->city, shipping_address->street_line1,
                                                   shipping_address->street_line2, shipping_address->postal_code);
  }
  
  bool operator==(const OrderInfo &lhs, const OrderInfo &rhs) {
    return lhs.name == rhs.name && lhs.phone_number == rhs.phone_number && lhs.email_address == rhs.email_address &&
           ((lhs.shipping_address == nullptr && rhs.shipping_address == nullptr) ||
            (lhs.shipping_address != nullptr && rhs.shipping_address != nullptr &&
             *lhs.shipping_address == *rhs.shipping_address));
  }
  
  bool operator!=(const OrderInfo &lhs, const OrderInfo &rhs) {
    return !(lhs == rhs);
  }
  
  StringBuilder &operator<<(StringBuilder &string_builder, const OrderInfo &order_info) {
    string_builder << "[OrderInfo " << tag("name", order_info.name) << tag("phone_number", order_info.phone_number)
                   << tag("email_address", order_info.email_address);
    if (order_info.shipping_address != nullptr) {
      string_builder << *order_info.shipping_address;
    }
    return string_builder << "]";
  }
  
  unique_ptr<OrderInfo> get_order_info(tl_object_ptr<telegram_api::paymentRequestedInfo> order_info) {
    if (order_info == nullptr || order_info->flags_ == 0) {
      return nullptr;
    }
    return make_unique<OrderInfo>(std::move(order_info->name_), std::move(order_info->phone_),
                                  std::move(order_info->email_),
                                  get_shipping_address(std::move(order_info->shipping_address_)));
  }
  
  tl_object_ptr<td_api::orderInfo> get_order_info_object(const unique_ptr<OrderInfo> &order_info) {
    if (order_info == nullptr) {
      return nullptr;
    }
    return make_tl_object<td_api::orderInfo>(order_info->name, order_info->phone_number, order_info->email_address,
                                             get_shipping_address_object(order_info->shipping_address));
  }
  
  bool operator==(const ShippingOption &lhs, const ShippingOption &rhs) {
    return lhs.id == rhs.id && lhs.title == rhs.title && lhs.price_parts == rhs.price_parts;
  }
  
  bool operator!=(const ShippingOption &lhs, const ShippingOption &rhs) {
    return !(lhs == rhs);
  }
  
  StringBuilder &operator<<(StringBuilder &string_builder, const ShippingOption &shipping_option) {
    return string_builder << "[ShippingOption " << shipping_option.id << " " << shipping_option.title
                          << " with price parts " << format::as_array(shipping_option.price_parts) << "]";
  }
  
  void answer_shipping_query(int64 shipping_query_id, vector<tl_object_ptr<td_api::shippingOption>> &&shipping_options,
                             const string &error_message, Promise<Unit> &&promise) {
    vector<tl_object_ptr<telegram_api::shippingOption>> options;
    for (auto &option : shipping_options) {
      if (option == nullptr) {
        return promise.set_error(Status::Error(400, "Shipping option must not be empty"));
      }
      if (!clean_input_string(option->id_)) {
        return promise.set_error(Status::Error(400, "Shipping option id must be encoded in UTF-8"));
      }
      if (!clean_input_string(option->title_)) {
        return promise.set_error(Status::Error(400, "Shipping option title must be encoded in UTF-8"));
      }
  
      vector<tl_object_ptr<telegram_api::labeledPrice>> prices;
      for (auto &price_part : option->price_parts_) {
        if (price_part == nullptr) {
          return promise.set_error(Status::Error(400, "Shipping option price part must not be empty"));
        }
        if (!clean_input_string(price_part->label_)) {
          return promise.set_error(Status::Error(400, "Shipping option price part label must be encoded in UTF-8"));
        }
  
        prices.push_back(make_tl_object<telegram_api::labeledPrice>(std::move(price_part->label_), price_part->amount_));
      }
  
      options.push_back(make_tl_object<telegram_api::shippingOption>(std::move(option->id_), std::move(option->title_),
                                                                     std::move(prices)));
    }
  
    G()->td()
        .get_actor_unsafe()
        ->create_handler<SetBotShippingAnswerQuery>(std::move(promise))
        ->send(shipping_query_id, error_message, std::move(options));
  }
  
  void answer_pre_checkout_query(int64 pre_checkout_query_id, const string &error_message, Promise<Unit> &&promise) {
    G()->td()
        .get_actor_unsafe()
        ->create_handler<SetBotPreCheckoutAnswerQuery>(std::move(promise))
        ->send(pre_checkout_query_id, error_message);
  }
  
  void get_payment_form(ServerMessageId server_message_id, Promise<tl_object_ptr<td_api::paymentForm>> &&promise) {
    G()->td().get_actor_unsafe()->create_handler<GetPaymentFormQuery>(std::move(promise))->send(server_message_id);
  }
  
  void validate_order_info(ServerMessageId server_message_id, tl_object_ptr<td_api::orderInfo> order_info,
                           bool allow_save, Promise<tl_object_ptr<td_api::validatedOrderInfo>> &&promise) {
    if (order_info != nullptr) {
      if (!clean_input_string(order_info->name_)) {
        return promise.set_error(Status::Error(400, "Name must be encoded in UTF-8"));
      }
      if (!clean_input_string(order_info->phone_number_)) {
        return promise.set_error(Status::Error(400, "Phone number must be encoded in UTF-8"));
      }
      if (!clean_input_string(order_info->email_address_)) {
        return promise.set_error(Status::Error(400, "Email address must be encoded in UTF-8"));
      }
      if (order_info->shipping_address_ != nullptr) {
        if (!clean_input_string(order_info->shipping_address_->country_code_)) {
          return promise.set_error(Status::Error(400, "Country code must be encoded in UTF-8"));
        }
        if (!clean_input_string(order_info->shipping_address_->state_)) {
          return promise.set_error(Status::Error(400, "State must be encoded in UTF-8"));
        }
        if (!clean_input_string(order_info->shipping_address_->city_)) {
          return promise.set_error(Status::Error(400, "City must be encoded in UTF-8"));
        }
        if (!clean_input_string(order_info->shipping_address_->street_line1_)) {
          return promise.set_error(Status::Error(400, "Street address must be encoded in UTF-8"));
        }
        if (!clean_input_string(order_info->shipping_address_->street_line2_)) {
          return promise.set_error(Status::Error(400, "Street address must be encoded in UTF-8"));
        }
        if (!clean_input_string(order_info->shipping_address_->postal_code_)) {
          return promise.set_error(Status::Error(400, "Postal code must be encoded in UTF-8"));
        }
      }
    }
  
    G()->td()
        .get_actor_unsafe()
        ->create_handler<ValidateRequestedInfoQuery>(std::move(promise))
        ->send(server_message_id, convert_order_info(std::move(order_info)), allow_save);
  }
  
  void send_payment_form(ServerMessageId server_message_id, const string &order_info_id, const string &shipping_option_id,
                         const tl_object_ptr<td_api::InputCredentials> &credentials,
                         Promise<tl_object_ptr<td_api::paymentResult>> &&promise) {
    CHECK(credentials != nullptr);
  
    tl_object_ptr<telegram_api::InputPaymentCredentials> input_credentials;
    switch (credentials->get_id()) {
      case td_api::inputCredentialsSaved::ID: {
        auto credentials_saved = static_cast<const td_api::inputCredentialsSaved *>(credentials.get());
        auto credentials_id = credentials_saved->saved_credentials_id_;
        if (!clean_input_string(credentials_id)) {
          return promise.set_error(Status::Error(400, "Credentials id must be encoded in UTF-8"));
        }
        auto temp_password_state =
            G()->td().get_actor_unsafe()->password_manager_->get_actor_unsafe()->get_temp_password_state_sync();
        if (!temp_password_state.has_temp_password) {
          return promise.set_error(Status::Error(400, "Temporary password required to use saved credentials"));
        }
  
        input_credentials = make_tl_object<telegram_api::inputPaymentCredentialsSaved>(
            std::move(credentials_id), BufferSlice(temp_password_state.temp_password));
        break;
      }
      case td_api::inputCredentialsNew::ID: {
        auto credentials_new = static_cast<const td_api::inputCredentialsNew *>(credentials.get());
        int32 flags = 0;
        if (credentials_new->allow_save_) {
          flags |= telegram_api::inputPaymentCredentials::SAVE_MASK;
        }
  
        input_credentials = make_tl_object<telegram_api::inputPaymentCredentials>(
            flags, false /*ignored*/, make_tl_object<telegram_api::dataJSON>(credentials_new->data_));
        break;
      }
      case td_api::inputCredentialsAndroidPay::ID: {
        auto credentials_android_pay = static_cast<const td_api::inputCredentialsAndroidPay *>(credentials.get());
        input_credentials = make_tl_object<telegram_api::inputPaymentCredentialsAndroidPay>(
            make_tl_object<telegram_api::dataJSON>(credentials_android_pay->data_), string());
        break;
      }
      case td_api::inputCredentialsApplePay::ID: {
        auto credentials_apple_pay = static_cast<const td_api::inputCredentialsApplePay *>(credentials.get());
        input_credentials = make_tl_object<telegram_api::inputPaymentCredentialsApplePay>(
            make_tl_object<telegram_api::dataJSON>(credentials_apple_pay->data_));
        break;
      }
      default:
        UNREACHABLE();
    }
  
    G()->td()
        .get_actor_unsafe()
        ->create_handler<SendPaymentFormQuery>(std::move(promise))
        ->send(server_message_id, order_info_id, shipping_option_id, std::move(input_credentials));
  }
  
  void get_payment_receipt(ServerMessageId server_message_id, Promise<tl_object_ptr<td_api::paymentReceipt>> &&promise) {
    G()->td().get_actor_unsafe()->create_handler<GetPaymentReceiptQuery>(std::move(promise))->send(server_message_id);
  }
  
  void get_saved_order_info(Promise<tl_object_ptr<td_api::orderInfo>> &&promise) {
    G()->td().get_actor_unsafe()->create_handler<GetSavedInfoQuery>(std::move(promise))->send();
  }
  
  void delete_saved_order_info(Promise<Unit> &&promise) {
    G()->td().get_actor_unsafe()->create_handler<ClearSavedInfoQuery>(std::move(promise))->send(false, true);
  }
  
  void delete_saved_credentials(Promise<Unit> &&promise) {
    G()->td().get_actor_unsafe()->create_handler<ClearSavedInfoQuery>(std::move(promise))->send(true, false);
  }
  
  }  // namespace td
  