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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 CONTENT_BROWSER_AI_ECHO_AI_MANAGER_IMPL_H_
#define CONTENT_BROWSER_AI_ECHO_AI_MANAGER_IMPL_H_
#include <variant>
#include "base/no_destructor.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/render_frame_host.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote_set.h"
#include "third_party/blink/public/mojom/ai/ai_language_model.mojom-forward.h"
#include "third_party/blink/public/mojom/ai/ai_language_model.mojom.h"
#include "third_party/blink/public/mojom/ai/ai_manager.mojom.h"
#include "third_party/blink/public/mojom/ai/model_download_progress_observer.mojom.h"
namespace content {
// The implementation of `blink::mojom::AIManager` that creates session which
// only echoes back the prompt text used for testing, and all the parameters
// will be set using the default value.
class EchoAIManagerImpl : public blink::mojom::AIManager {
public:
// The context size for EchoAIManagerImpl is intentionally set to a small
// value so we can easily simulate the context overflow scenario.
static constexpr int kMaxContextSizeInTokens = 1000;
EchoAIManagerImpl(const EchoAIManagerImpl&) = delete;
EchoAIManagerImpl& operator=(const EchoAIManagerImpl&) = delete;
~EchoAIManagerImpl() override;
static void Create(mojo::PendingReceiver<blink::mojom::AIManager> receiver);
private:
friend base::NoDestructor<EchoAIManagerImpl>;
EchoAIManagerImpl();
// `blink::mojom::AIManager` implementation.
void CanCreateLanguageModel(
blink::mojom::AILanguageModelCreateOptionsPtr options,
CanCreateLanguageModelCallback callback) override;
void CreateLanguageModel(
mojo::PendingRemote<blink::mojom::AIManagerCreateLanguageModelClient>
client,
blink::mojom::AILanguageModelCreateOptionsPtr options) override;
void CanCreateSummarizer(blink::mojom::AISummarizerCreateOptionsPtr options,
CanCreateSummarizerCallback callback) override;
void CreateSummarizer(
mojo::PendingRemote<blink::mojom::AIManagerCreateSummarizerClient> client,
blink::mojom::AISummarizerCreateOptionsPtr options) override;
void GetLanguageModelParams(GetLanguageModelParamsCallback callback) override;
void CanCreateWriter(blink::mojom::AIWriterCreateOptionsPtr options,
CanCreateWriterCallback callback) override;
void CreateWriter(
mojo::PendingRemote<blink::mojom::AIManagerCreateWriterClient> client,
blink::mojom::AIWriterCreateOptionsPtr options) override;
void CanCreateRewriter(blink::mojom::AIRewriterCreateOptionsPtr options,
CanCreateRewriterCallback callback) override;
void CreateRewriter(
mojo::PendingRemote<blink::mojom::AIManagerCreateRewriterClient> client,
blink::mojom::AIRewriterCreateOptionsPtr options) override;
void CanCreateProofreader(blink::mojom::AIProofreaderCreateOptionsPtr options,
CanCreateProofreaderCallback callback) override;
void CreateProofreader(
mojo::PendingRemote<blink::mojom::AIManagerCreateProofreaderClient>
client,
blink::mojom::AIProofreaderCreateOptionsPtr options) override;
void AddModelDownloadProgressObserver(
mojo::PendingRemote<blink::mojom::ModelDownloadProgressObserver>
observer_remote) override;
template <typename CanCreateCallback>
void CanCreateClient(CanCreateCallback callback);
template <typename AIClientRemote,
typename AIPendingRemote,
typename EchoAIClient>
void CreateClient(mojo::Remote<AIClientRemote> client_remote);
template <typename AICreateOptions, typename CanCreateCallback>
void CanCreateWritingAssistanceClient(AICreateOptions options,
CanCreateCallback callback);
template <typename AICreateOptions,
typename AIClientRemote,
typename AIPendingRemote,
typename EchoAIClient>
void CreateWritingAssistanceClient(mojo::PendingRemote<AIClientRemote> client,
AICreateOptions options);
template <typename AIClientRemote,
typename AIPendingRemote,
typename EchoAIClient>
void ReturnAIClientCreationResult(mojo::Remote<AIClientRemote> client_remote);
void ReturnAILanguageModelCreationResult(
mojo::Remote<blink::mojom::AIManagerCreateLanguageModelClient>
client_remote,
blink::mojom::AILanguageModelSamplingParamsPtr sampling_params,
base::flat_set<blink::mojom::AILanguageModelPromptType>
enabled_input_types,
uint32_t initial_input_usage);
void DoMockDownloadingAndReturn(base::OnceClosure callback);
// The mocked download status of an imagined foundational model.
bool model_downloaded_ = false;
mojo::RemoteSet<blink::mojom::ModelDownloadProgressObserver>
download_progress_observers_;
mojo::ReceiverSet<blink::mojom::AIManager> receivers_;
base::WeakPtrFactory<EchoAIManagerImpl> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_AI_ECHO_AI_MANAGER_IMPL_H_
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