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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/api/experimental_actor/experimental_actor_api.h"
#include <cstdint>
#include <optional>
#include <vector>
#include "base/check.h"
#include "base/strings/string_split.h"
#include "base/version_info/channel.h"
#include "chrome/browser/actor/actor_keyed_service.h"
#include "chrome/browser/actor/actor_keyed_service_factory.h"
#include "chrome/browser/actor/task_id.h"
#include "chrome/browser/ai/ai_data_keyed_service.h"
#include "chrome/browser/extensions/chrome_extension_function_details.h"
#include "chrome/browser/extensions/extension_tab_util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/common/extensions/api/experimental_actor.h"
#include "components/optimization_guide/proto/features/actions_data.pb.h"
#include "components/optimization_guide/proto/features/model_prototyping.pb.h"
#include "components/sessions/content/session_tab_helper.h"
#include "extensions/common/features/feature_channel.h"
namespace extensions {
namespace {
// Converts a session tab id to a tab handle.
int32_t ConvertSessionTabIdToTabHandle(
int32_t session_tab_id,
content::BrowserContext* browser_context) {
content::WebContents* web_contents = nullptr;
if (!ExtensionTabUtil::GetTabById(session_tab_id, browser_context,
/*include_incognito=*/true,
&web_contents)) {
return tabs::TabHandle::Null().raw_value();
}
tabs::TabInterface* tab =
tabs::TabInterface::MaybeGetFromContents(web_contents);
// Can be null for pre-render web-contents.
// TODO(crbug.com/369319589): Remove this logic.
if (!tab) {
return tabs::TabHandle::Null().raw_value();
}
return tab->GetHandle().raw_value();
}
// Converts a tab handle to a session tab id.
int32_t ConvertTabHandleToSessionTabId(
int32_t tab_handle,
content::BrowserContext* browser_context) {
tabs::TabInterface* tab = tabs::TabHandle(tab_handle).Get();
if (!tab) {
return api::tabs::TAB_ID_NONE;
}
return sessions::SessionTabHelper::IdForTab(tab->GetContents()).id();
}
} // namespace
ExperimentalActorApiFunction::ExperimentalActorApiFunction() = default;
ExperimentalActorApiFunction::~ExperimentalActorApiFunction() = default;
bool ExperimentalActorApiFunction::PreRunValidation(std::string* error) {
#if !BUILDFLAG(ENABLE_GLIC)
*error = "Actions not supported for this build configuration.";
return false;
#else
if (GetCurrentChannel() == version_info::Channel::STABLE &&
!AiDataKeyedService::IsExtensionAllowlistedForStable(extension_id())) {
*error = "API access not allowed on this channel.";
return false;
}
if (!AiDataKeyedService::IsExtensionAllowlistedForActions(extension_id())) {
*error = "Actions API access restricted for this extension.";
return false;
}
auto* actor_service = actor::ActorKeyedService::Get(browser_context());
if (!actor_service) {
*error = "Incognito profile not supported.";
return false;
}
return true;
#endif
}
ExperimentalActorStartTaskFunction::ExperimentalActorStartTaskFunction() =
default;
ExperimentalActorStartTaskFunction::~ExperimentalActorStartTaskFunction() =
default;
ExtensionFunction::ResponseAction ExperimentalActorStartTaskFunction::Run() {
auto params = api::experimental_actor::StartTask::Params::Create(args());
EXTENSION_FUNCTION_VALIDATE(params);
optimization_guide::proto::BrowserStartTask task;
if (!task.ParseFromArray(params->start_task_proto.data(),
params->start_task_proto.size())) {
return RespondNow(
Error("Parsing optimization_guide::proto::BrowserStartTask failed."));
}
// Convert from extension tab ids to TabHandles.
int32_t tab_handle =
ConvertSessionTabIdToTabHandle(task.tab_id(), browser_context());
task.set_tab_id(tab_handle);
auto* actor_service = actor::ActorKeyedService::Get(browser_context());
actor_service->StartTask(
std::move(task),
base::BindOnce(&ExperimentalActorStartTaskFunction::OnTaskStarted, this));
return RespondLater();
}
void ExperimentalActorStartTaskFunction::OnTaskStarted(
optimization_guide::proto::BrowserStartTaskResult task) {
std::vector<uint8_t> data_buffer(task.ByteSizeLong());
task.SerializeToArray(&data_buffer[0], task.ByteSizeLong());
Respond(ArgumentList(api::experimental_actor::StartTask::Results::Create(
std::move(data_buffer))));
}
ExperimentalActorStopTaskFunction::ExperimentalActorStopTaskFunction() =
default;
ExperimentalActorStopTaskFunction::~ExperimentalActorStopTaskFunction() =
default;
ExtensionFunction::ResponseAction ExperimentalActorStopTaskFunction::Run() {
auto params = api::experimental_actor::StopTask::Params::Create(args());
EXTENSION_FUNCTION_VALIDATE(params);
auto* actor_service = actor::ActorKeyedService::Get(browser_context());
actor_service->StopTask(actor::TaskId(params->task_id));
return RespondNow(
ArgumentList(api::experimental_actor::StopTask::Results::Create()));
}
ExperimentalActorExecuteActionFunction::
ExperimentalActorExecuteActionFunction() = default;
ExperimentalActorExecuteActionFunction::
~ExperimentalActorExecuteActionFunction() = default;
ExtensionFunction::ResponseAction
ExperimentalActorExecuteActionFunction::Run() {
#if !BUILDFLAG(ENABLE_GLIC)
return RespondNow(
Error("Execute action not supported for this build configuration."));
#else
auto params = api::experimental_actor::ExecuteAction::Params::Create(args());
EXTENSION_FUNCTION_VALIDATE(params);
optimization_guide::proto::BrowserAction action;
if (!action.ParseFromArray(params->browser_action_proto.data(),
params->browser_action_proto.size())) {
return RespondNow(
Error("Parsing optimization_guide::proto::BrowserAction failed."));
}
int32_t tab_handle =
ConvertSessionTabIdToTabHandle(action.tab_id(), browser_context());
action.set_tab_id(tab_handle);
auto* actor_service =
actor::ActorKeyedServiceFactory::GetActorKeyedService(browser_context());
actor_service->ExecuteAction(
std::move(action),
base::BindOnce(
&ExperimentalActorExecuteActionFunction::OnResponseReceived, this));
return RespondLater();
#endif
}
void ExperimentalActorExecuteActionFunction::OnResponseReceived(
optimization_guide::proto::BrowserActionResult response) {
// Convert from tab handle to session tab id.
int32_t session_tab_id =
ConvertTabHandleToSessionTabId(response.tab_id(), browser_context());
response.set_tab_id(session_tab_id);
std::vector<uint8_t> data_buffer(response.ByteSizeLong());
if (!data_buffer.empty()) {
response.SerializeToArray(&data_buffer[0], response.ByteSizeLong());
}
Respond(ArgumentList(api::experimental_actor::ExecuteAction::Results::Create(
std::move(data_buffer))));
}
} // namespace extensions
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