// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/payments/content/android_payment_app.h"

#include <utility>

#include "base/check.h"
#include "components/payments/core/method_strings.h"
#include "components/payments/core/native_error_strings.h"
#include "components/payments/core/payer_data.h"
#include "content/public/browser/web_contents.h"

namespace payments {

AndroidPaymentApp::AndroidPaymentApp(
    const std::set<std::string>& payment_method_names,
    std::unique_ptr<std::map<std::string, std::set<std::string>>>
        stringified_method_data,
    const GURL& top_level_origin,
    const GURL& payment_request_origin,
    const std::string& payment_request_id,
    std::unique_ptr<AndroidAppDescription> description,
    base::WeakPtr<AndroidAppCommunication> communication,
    content::GlobalRenderFrameHostId frame_routing_id,
    const std::optional<base::UnguessableToken>& twa_instance_identifier)
    : PaymentApp(/*icon_resource_id=*/0, PaymentApp::Type::NATIVE_MOBILE_APP),
      stringified_method_data_(std::move(stringified_method_data)),
      top_level_origin_(top_level_origin),
      payment_request_origin_(payment_request_origin),
      payment_request_id_(payment_request_id),
      description_(std::move(description)),
      communication_(communication),
      frame_routing_id_(frame_routing_id),
      payment_app_token_(base::UnguessableToken::Create()),
      payment_app_open_(false),
      twa_instance_identifier_(twa_instance_identifier) {
  DCHECK(!payment_method_names.empty());
  DCHECK_EQ(payment_method_names.size(), stringified_method_data_->size());
  DCHECK_EQ(*payment_method_names.begin(),
            stringified_method_data_->begin()->first);
  DCHECK(description_);
  DCHECK(!description_->package.empty());
  DCHECK_EQ(1U, description_->activities.size());
  DCHECK(!description_->activities.front()->name.empty());

  app_method_names_ = payment_method_names;
}

AndroidPaymentApp::~AndroidPaymentApp() {
  if (payment_app_open_) {
    AbortPaymentApp(base::DoNothing());
  }
}

void AndroidPaymentApp::InvokePaymentApp(base::WeakPtr<Delegate> delegate) {
  // Browser is closing, so no need to invoke a callback.
  if (!communication_)
    return;

  content::RenderFrameHost* rfh =
      content::RenderFrameHost::FromID(frame_routing_id_);
  if (!rfh || !rfh->IsActive())
    return;
  content::WebContents* web_contents =
      content::WebContents::FromRenderFrameHost(rfh);
  if (!web_contents)
    return;

  payment_app_open_ = true;
  communication_->InvokePaymentApp(
      description_->package, description_->activities.front()->name,
      *stringified_method_data_, top_level_origin_, payment_request_origin_,
      payment_request_id_, payment_app_token_, web_contents,
      twa_instance_identifier_,
      base::BindOnce(&AndroidPaymentApp::OnPaymentAppResponse,
                     weak_ptr_factory_.GetWeakPtr(), delegate));
}

bool AndroidPaymentApp::IsCompleteForPayment() const {
  return true;
}

bool AndroidPaymentApp::CanPreselect() const {
  return true;
}

std::u16string AndroidPaymentApp::GetMissingInfoLabel() const {
  NOTREACHED();
}

bool AndroidPaymentApp::HasEnrolledInstrument() const {
  return true;
}

bool AndroidPaymentApp::NeedsInstallation() const {
  return false;
}

std::string AndroidPaymentApp::GetId() const {
  return description_->package;
}

std::u16string AndroidPaymentApp::GetLabel() const {
  return std::u16string();
}

std::u16string AndroidPaymentApp::GetSublabel() const {
  return std::u16string();
}

const SkBitmap* AndroidPaymentApp::icon_bitmap() const {
  return nullptr;
}

bool AndroidPaymentApp::IsValidForModifier(const std::string& method) const {
  bool is_valid = false;
  IsValidForPaymentMethodIdentifier(method, &is_valid);
  return is_valid;
}

base::WeakPtr<PaymentApp> AndroidPaymentApp::AsWeakPtr() {
  return weak_ptr_factory_.GetWeakPtr();
}

bool AndroidPaymentApp::HandlesShippingAddress() const {
  return false;
}

bool AndroidPaymentApp::HandlesPayerName() const {
  return false;
}

bool AndroidPaymentApp::HandlesPayerEmail() const {
  return false;
}

bool AndroidPaymentApp::HandlesPayerPhone() const {
  return false;
}

bool AndroidPaymentApp::IsWaitingForPaymentDetailsUpdate() const {
  return false;
}

void AndroidPaymentApp::UpdateWith(
    mojom::PaymentRequestDetailsUpdatePtr details_update) {
  // TODO(crbug.com/40106647): Support payment method, shipping address, and
  // shipping option change events.
}

void AndroidPaymentApp::OnPaymentDetailsNotUpdated() {}

void AndroidPaymentApp::AbortPaymentApp(
    base::OnceCallback<void(bool)> abort_callback) {
  if (!communication_ || !payment_app_open_) {
    std::move(abort_callback).Run(false);
    return;
  }

  payment_app_open_ = false;

  communication_->AbortPaymentApp(payment_app_token_,
                                  std::move(abort_callback));
}

bool AndroidPaymentApp::IsPreferred() const {
  // This class used only on Chrome OS, where the only Android payment app
  // available is the trusted web application (TWA) that launched this instance
  // of Chrome with a TWA specific payment method, so this app should be
  // preferred.
#if BUILDFLAG(IS_CHROMEOS)
  DCHECK_EQ(1U, GetAppMethodNames().size());
  DCHECK_EQ(methods::kGooglePlayBilling, *GetAppMethodNames().begin());
  return true;
#else
  NOTREACHED();
#endif  // BUILDFLAG(IS_CHROMEOS)
}

void AndroidPaymentApp::OnPaymentAppResponse(
    base::WeakPtr<Delegate> delegate,
    const std::optional<std::string>& error_message,
    bool is_activity_result_ok,
    const std::string& payment_method_identifier,
    const std::string& stringified_details) {
  payment_app_open_ = false;
  if (!delegate)
    return;

  if (error_message.has_value()) {
    delegate->OnInstrumentDetailsError(error_message.value());
    return;
  }

  if (!is_activity_result_ok) {
    delegate->OnInstrumentDetailsError(errors::kUserClosedPaymentApp);
    return;
  }

  delegate->OnInstrumentDetailsReady(payment_method_identifier,
                                     stringified_details, PayerData());
}

}  // namespace payments