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assistant_suggestions_controller_impl.cc
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assistant_suggestions_controller_impl.cc
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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/assistant/assistant_suggestions_controller_impl.h"
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include "ash/assistant/model/assistant_ui_model.h"
#include "ash/assistant/util/assistant_util.h"
#include "ash/assistant/util/deep_link_util.h"
#include "ash/assistant/util/resource_util.h"
#include "ash/public/cpp/assistant/controller/assistant_ui_controller.h"
#include "ash/public/cpp/assistant/conversation_starter.h"
#include "ash/public/cpp/assistant/conversation_starters_client.h"
#include "ash/shell.h"
#include "ash/strings/grit/ash_strings.h"
#include "base/rand_util.h"
#include "base/stl_util.h"
#include "base/unguessable_token.h"
#include "chromeos/services/assistant/public/cpp/assistant_prefs.h"
#include "chromeos/services/assistant/public/cpp/features.h"
#include "chromeos/services/libassistant/public/cpp/assistant_suggestion.h"
#include "ui/base/l10n/l10n_util.h"
namespace ash {
namespace {
using chromeos::assistant::AssistantSuggestion;
using chromeos::assistant::AssistantSuggestionType;
using chromeos::assistant::features::IsBetterOnboardingEnabled;
using chromeos::assistant::features::IsConversationStartersV2Enabled;
using chromeos::assistant::prefs::AssistantOnboardingMode;
// Conversation starters -------------------------------------------------------
constexpr int kMaxNumOfConversationStarters = 3;
bool IsAllowed(const ConversationStarter& conversation_starter) {
using Permission = ConversationStarter::Permission;
if (conversation_starter.RequiresPermission(Permission::kUnknown))
return false;
if (conversation_starter.RequiresPermission(Permission::kRelatedInfo) &&
!AssistantState::Get()->context_enabled().value_or(false)) {
return false;
}
return true;
}
AssistantSuggestion ToAssistantSuggestion(
const ConversationStarter& conversation_starter) {
AssistantSuggestion suggestion;
suggestion.id = base::UnguessableToken::Create();
suggestion.type = AssistantSuggestionType::kConversationStarter;
suggestion.text = conversation_starter.label();
if (conversation_starter.action_url().has_value())
suggestion.action_url = conversation_starter.action_url().value();
if (conversation_starter.icon_url().has_value())
suggestion.icon_url = conversation_starter.icon_url().value();
return suggestion;
}
} // namespace
// AssistantSuggestionsControllerImpl ------------------------------------------
AssistantSuggestionsControllerImpl::AssistantSuggestionsControllerImpl() {
// In conversation starters V2, we only update conversation starters when the
// Assistant UI is becoming visible so as to maximize freshness.
if (!IsConversationStartersV2Enabled())
UpdateConversationStarters();
assistant_controller_observation_.Observe(AssistantController::Get());
}
AssistantSuggestionsControllerImpl::~AssistantSuggestionsControllerImpl() =
default;
const AssistantSuggestionsModel* AssistantSuggestionsControllerImpl::GetModel()
const {
return &model_;
}
void AssistantSuggestionsControllerImpl::OnAssistantControllerConstructed() {
AssistantUiController::Get()->GetModel()->AddObserver(this);
AssistantState::Get()->AddObserver(this);
}
void AssistantSuggestionsControllerImpl::OnAssistantControllerDestroying() {
AssistantState::Get()->RemoveObserver(this);
AssistantUiController::Get()->GetModel()->RemoveObserver(this);
}
void AssistantSuggestionsControllerImpl::OnUiVisibilityChanged(
AssistantVisibility new_visibility,
AssistantVisibility old_visibility,
base::Optional<AssistantEntryPoint> entry_point,
base::Optional<AssistantExitPoint> exit_point) {
if (IsConversationStartersV2Enabled()) {
// When Assistant is starting a session, we update our cache of conversation
// starters so that they are as fresh as possible. Note that we may need to
// modify this logic later if latency becomes a concern.
if (assistant::util::IsStartingSession(new_visibility, old_visibility)) {
UpdateConversationStarters();
return;
}
// When Assistant is finishing a session, we clear our cache of conversation
// starters so that, when the next session begins, we won't show stale
// conversation starters while we fetch fresh ones.
if (assistant::util::IsFinishingSession(new_visibility)) {
conversation_starters_weak_factory_.InvalidateWeakPtrs();
model_.SetConversationStarters({});
}
return;
}
DCHECK(!IsConversationStartersV2Enabled());
// When Assistant is finishing a session, we update our cache of conversation
// starters so that they're fresh for the next launch.
if (assistant::util::IsFinishingSession(new_visibility))
UpdateConversationStarters();
}
void AssistantSuggestionsControllerImpl::OnAssistantContextEnabled(
bool enabled) {
// We currently assume that the context setting is not being modified while
// Assistant UI is visible.
DCHECK_NE(AssistantVisibility::kVisible,
AssistantUiController::Get()->GetModel()->visibility());
// In conversation starters V2, we only update conversation starters when
// Assistant UI is becoming visible so as to maximize freshness.
if (IsConversationStartersV2Enabled())
return;
UpdateConversationStarters();
}
void AssistantSuggestionsControllerImpl::OnAssistantOnboardingModeChanged(
AssistantOnboardingMode onboarding_mode) {
// Onboarding suggestions are only applicable if the feature is enabled.
if (IsBetterOnboardingEnabled())
UpdateOnboardingSuggestions();
}
void AssistantSuggestionsControllerImpl::UpdateConversationStarters() {
// If conversation starters V2 is enabled, we'll fetch a fresh set of
// conversation starters from the server.
if (IsConversationStartersV2Enabled()) {
FetchConversationStarters();
return;
}
// Otherwise we'll use a locally provided set of conversation starters.
ProvideConversationStarters();
}
void AssistantSuggestionsControllerImpl::FetchConversationStarters() {
DCHECK(IsConversationStartersV2Enabled());
// Invalidate any requests that are already in flight.
conversation_starters_weak_factory_.InvalidateWeakPtrs();
// Fetch a fresh set of conversation starters from the server (via the
// dedicated ConversationStartersClient).
ConversationStartersClient::Get()->FetchConversationStarters(base::BindOnce(
[](const base::WeakPtr<AssistantSuggestionsControllerImpl>& self,
std::vector<ConversationStarter>&& conversation_starters) {
if (!self)
return;
// Remove any conversation starters which we determine to not be allowed
// based on the required permissions that they specify. Note that this
// no-ops if the collection is empty.
base::EraseIf(conversation_starters,
[](const ConversationStarter& conversation_starter) {
return !IsAllowed(conversation_starter);
});
// When the server doesn't respond with any conversation starters that
// we can present, we'll fallback to the locally provided set.
if (conversation_starters.empty()) {
self->ProvideConversationStarters();
return;
}
// The number of conversation starters should not exceed our maximum.
while (conversation_starters.size() > kMaxNumOfConversationStarters)
conversation_starters.pop_back();
// We need to transform our conversation starters into the type that is
// understood by the suggestions model...
std::vector<AssistantSuggestion> suggestions;
std::transform(conversation_starters.begin(),
conversation_starters.end(),
std::back_inserter(suggestions), ToAssistantSuggestion);
// ...and we update our cache.
self->model_.SetConversationStarters(std::move(suggestions));
},
conversation_starters_weak_factory_.GetWeakPtr()));
}
void AssistantSuggestionsControllerImpl::ProvideConversationStarters() {
std::vector<AssistantSuggestion> conversation_starters;
// Adds a conversation starter for the given |message_id| and |action_url|.
auto AddConversationStarter = [&conversation_starters](
int message_id, GURL action_url = GURL()) {
AssistantSuggestion starter;
starter.id = base::UnguessableToken::Create();
starter.type = AssistantSuggestionType::kConversationStarter;
starter.text = l10n_util::GetStringUTF8(message_id);
starter.action_url = action_url;
conversation_starters.push_back(std::move(starter));
};
// Always show the "What can you do?" conversation starter.
AddConversationStarter(IDS_ASH_ASSISTANT_CHIP_WHAT_CAN_YOU_DO);
// If enabled, always show the "What's on my screen?" conversation starter.
if (AssistantState::Get()->context_enabled().value_or(false)) {
AddConversationStarter(IDS_ASH_ASSISTANT_CHIP_WHATS_ON_MY_SCREEN,
assistant::util::CreateWhatsOnMyScreenDeepLink());
}
// The rest of the conversation starters will be shuffled...
std::vector<int> shuffled_message_ids;
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_IM_BORED);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_OPEN_FILES);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_PLAY_MUSIC);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_SEND_AN_EMAIL);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_SET_A_REMINDER);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_WHATS_ON_MY_CALENDAR);
shuffled_message_ids.push_back(IDS_ASH_ASSISTANT_CHIP_WHATS_THE_WEATHER);
base::RandomShuffle(shuffled_message_ids.begin(), shuffled_message_ids.end());
// ...and added until we have no more than |kMaxNumOfConversationStarters|.
for (int i = 0;
conversation_starters.size() < kMaxNumOfConversationStarters &&
i < static_cast<int>(shuffled_message_ids.size());
++i) {
AddConversationStarter(shuffled_message_ids[i]);
}
model_.SetConversationStarters(std::move(conversation_starters));
}
void AssistantSuggestionsControllerImpl::UpdateOnboardingSuggestions() {
DCHECK(IsBetterOnboardingEnabled());
auto CreateIconResourceLink = [](int message_id) {
switch (message_id) {
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_CONVERSION:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kConversionPath);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_KNOWLEDGE:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kPersonPinCircle);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_KNOWLEDGE_EDU:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kStraighten);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_LANGUAGE:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kTranslate);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_MATH:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kCalculate);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_PERSONALITY:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kSentimentVerySatisfied);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_PRODUCTIVITY:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kTimer);
case IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_TECHNICAL:
return assistant::util::CreateIconResourceLink(
assistant::util::IconName::kScreenshot);
default:
NOTREACHED();
return GURL();
}
};
std::vector<AssistantSuggestion> onboarding_suggestions;
using chromeos::assistant::AssistantBetterOnboardingType;
auto AddSuggestion = [&CreateIconResourceLink, &onboarding_suggestions](
int message_id, AssistantBetterOnboardingType type) {
onboarding_suggestions.emplace_back();
auto& suggestion = onboarding_suggestions.back();
suggestion.id = base::UnguessableToken::Create();
suggestion.type = AssistantSuggestionType::kBetterOnboarding;
suggestion.better_onboarding_type = type;
suggestion.text = l10n_util::GetStringUTF8(message_id);
suggestion.icon_url = CreateIconResourceLink(message_id);
suggestion.action_url = GURL();
};
switch (AssistantState::Get()->onboarding_mode().value_or(
AssistantOnboardingMode::kDefault)) {
case AssistantOnboardingMode::kEducation:
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_MATH,
AssistantBetterOnboardingType::kMath);
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_KNOWLEDGE_EDU,
AssistantBetterOnboardingType::kKnowledgeEdu);
break;
case AssistantOnboardingMode::kDefault:
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_CONVERSION,
AssistantBetterOnboardingType::kConversion);
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_KNOWLEDGE,
AssistantBetterOnboardingType::kKnowledge);
break;
}
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_PRODUCTIVITY,
AssistantBetterOnboardingType::kProductivity);
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_PERSONALITY,
AssistantBetterOnboardingType::kPersonality);
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_LANGUAGE,
AssistantBetterOnboardingType::kLanguage);
AddSuggestion(IDS_ASH_ASSISTANT_ONBOARDING_SUGGESTION_TECHNICAL,
AssistantBetterOnboardingType::kTechnical);
model_.SetOnboardingSuggestions(std::move(onboarding_suggestions));
}
} // namespace ash