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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_LIVE_CAPTION_TRANSLATION_DISPATCHER_H_
#define COMPONENTS_LIVE_CAPTION_TRANSLATION_DISPATCHER_H_
#include <memory>
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/types/expected.h"
#include "components/live_caption/translation_util.h"
#include "components/soda/constants.h"
#include "media/mojo/mojom/speech_recognition_result.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/data_decoder/public/cpp/data_decoder.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
namespace content {
class BrowserContext;
} // namespace content
namespace network {
class SimpleURLLoader;
} // namespace network
namespace captions {
///////////////////////////////////////////////////////////////////////////////
// Live Translate Dispatcher
//
// Sends out the request to Cloud Translate API. The owning class provides the
// API key which is used to call the service.
//
class TranslationDispatcher {
public:
TranslationDispatcher(std::string api_key,
content::BrowserContext* browser_context);
TranslationDispatcher(const TranslationDispatcher&) = delete;
TranslationDispatcher& operator=(const TranslationDispatcher&) = delete;
~TranslationDispatcher();
void GetTranslation(const std::string& result,
std::string source_language,
std::string target_language,
TranslateEventCallback callback);
private:
void ResetURLLoaderFactory();
void OnURLLoadComplete(TranslateEventCallback callback,
std::optional<std::string> response_body);
void EmitError(TranslateEventCallback callback,
const std::string& string) const;
// Called when the data decoder service provides parsed JSON data for a server
// response.
void OnResponseJsonParsed(TranslateEventCallback callback,
data_decoder::DataDecoder::ValueOrError result);
const std::string api_key_;
raw_ptr<content::BrowserContext> browser_context_;
mojo::Remote<network::mojom::URLLoaderFactory> url_loader_factory_;
std::unique_ptr<network::SimpleURLLoader> url_loader_;
data_decoder::DataDecoder data_decoder_;
base::WeakPtrFactory<TranslationDispatcher> weak_factory_{this};
};
} // namespace captions
#endif // COMPONENTS_LIVE_CAPTION_TRANSLATION_DISPATCHER_H_
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