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// Copyright 2022 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/ui/ash/holding_space/holding_space_suggestions_delegate.h"
#include <algorithm>
#include "ash/constants/ash_features.h"
#include "ash/public/cpp/holding_space/holding_space_file.h"
#include "base/containers/adapters.h"
#include "chrome/browser/ash/file_manager/path_util.h"
#include "chrome/browser/ash/file_suggest/file_suggest_keyed_service_factory.h"
#include "chrome/browser/profiles/profile.h"
namespace ash {
namespace {
// Returns the holding space item type that matches a given suggestion type.
HoldingSpaceItem::Type GetItemTypeFromSuggestionType(
FileSuggestionType suggestion_type) {
switch (suggestion_type) {
case FileSuggestionType::kDriveFile:
return HoldingSpaceItem::Type::kDriveSuggestion;
case FileSuggestionType::kLocalFile:
return HoldingSpaceItem::Type::kLocalSuggestion;
}
}
// Returns whether `item` represents a pinned file that also exists as a
// suggested file in `suggestions_by_type`.
bool ItemIsPinnedSuggestion(
const HoldingSpaceItem* item,
std::map<HoldingSpaceItem::Type, std::vector<base::FilePath>>&
suggestions_by_type) {
if (item->type() != HoldingSpaceItem::Type::kPinnedFile) {
return false;
}
for (const auto& [_, suggested_file_paths] : suggestions_by_type) {
if (base::Contains(suggested_file_paths, item->file().file_path)) {
return true;
}
}
return false;
}
} // namespace
HoldingSpaceSuggestionsDelegate::HoldingSpaceSuggestionsDelegate(
HoldingSpaceKeyedService* service,
HoldingSpaceModel* model)
: HoldingSpaceKeyedServiceDelegate(service, model) {
DCHECK(features::IsHoldingSpaceSuggestionsEnabled());
}
HoldingSpaceSuggestionsDelegate::~HoldingSpaceSuggestionsDelegate() = default;
void HoldingSpaceSuggestionsDelegate::RefreshSuggestions() {
MaybeFetchSuggestions(FileSuggestionType::kDriveFile);
MaybeFetchSuggestions(FileSuggestionType::kLocalFile);
}
void HoldingSpaceSuggestionsDelegate::RemoveSuggestions(
const std::vector<base::FilePath>& absolute_file_paths) {
FileSuggestKeyedServiceFactory::GetInstance()
->GetService(profile())
->RemoveSuggestionsAndNotify(absolute_file_paths);
}
void HoldingSpaceSuggestionsDelegate::OnHoldingSpaceItemsAdded(
const std::vector<const HoldingSpaceItem*>& items) {
if (std::ranges::any_of(items, [&](const HoldingSpaceItem* item) {
return item->IsInitialized() &&
ItemIsPinnedSuggestion(item, suggestions_by_type_);
})) {
// Update suggestions asynchronously to avoid updating suggestions along
// with other model updates.
MaybeScheduleUpdateSuggestionsInModel();
}
}
void HoldingSpaceSuggestionsDelegate::OnHoldingSpaceItemsRemoved(
const std::vector<const HoldingSpaceItem*>& items) {
if (std::ranges::any_of(items, [&](const HoldingSpaceItem* item) {
return item->IsInitialized() &&
ItemIsPinnedSuggestion(item, suggestions_by_type_);
})) {
// Update suggestions asynchronously to avoid updating suggestions along
// with other model updates.
MaybeScheduleUpdateSuggestionsInModel();
}
}
void HoldingSpaceSuggestionsDelegate::OnHoldingSpaceItemInitialized(
const HoldingSpaceItem* item) {
if (ItemIsPinnedSuggestion(item, suggestions_by_type_)) {
// Update suggestions asynchronously to avoid updating suggestions along
// with other model updates.
MaybeScheduleUpdateSuggestionsInModel();
}
}
void HoldingSpaceSuggestionsDelegate::OnPersistenceRestored() {
// Initialize `suggestions_by_type_` with the restored suggestions. The model
// items are iterated reversely so that the suggestions of the same category
// in `suggestions_by_type_` follow the relevance order.
DCHECK(suggestions_by_type_.empty());
for (const auto& item : base::Reversed(model()->items())) {
// Skip if `item` is not a suggestion.
if (HoldingSpaceItem::IsSuggestionType(item->type())) {
suggestions_by_type_[item->type()].push_back(item->file().file_path);
}
}
file_suggest_service_observation_.Observe(
FileSuggestKeyedServiceFactory::GetInstance()->GetService(profile()));
MaybeFetchSuggestions(FileSuggestionType::kDriveFile);
MaybeFetchSuggestions(FileSuggestionType::kLocalFile);
}
void HoldingSpaceSuggestionsDelegate::OnFileSuggestionUpdated(
FileSuggestionType type) {
MaybeFetchSuggestions(type);
}
void HoldingSpaceSuggestionsDelegate::MaybeFetchSuggestions(
FileSuggestionType type) {
// A data query on `type` has been sent so it is unnecessary to send a request
// again. Return early.
if (base::Contains(pending_fetches_, type)) {
return;
}
// Mark that the query for suggestions of `type` has been sent.
pending_fetches_.insert(type);
FileSuggestKeyedServiceFactory::GetInstance()
->GetService(profile())
->GetSuggestFileData(
type,
base::BindOnce(&HoldingSpaceSuggestionsDelegate::OnSuggestionsFetched,
weak_factory_.GetWeakPtr(), type));
}
void HoldingSpaceSuggestionsDelegate::MaybeScheduleUpdateSuggestionsInModel() {
// Return early if the task of updating model suggestions has been scheduled.
if (suggestion_update_timer_.IsRunning()) {
return;
}
suggestion_update_timer_.Start(
FROM_HERE, /*delay=*/base::TimeDelta(),
base::BindOnce(&HoldingSpaceSuggestionsDelegate::UpdateSuggestionsInModel,
weak_factory_.GetWeakPtr()));
}
void HoldingSpaceSuggestionsDelegate::OnSuggestionsFetched(
FileSuggestionType type,
const std::optional<std::vector<FileSuggestData>>& suggestions) {
// Mark that the suggestions of `type` have been fetched.
size_t deleted_size = pending_fetches_.erase(type);
DCHECK_EQ(1u, deleted_size);
if (!suggestions) {
return;
}
// Extract file paths from `suggestions`.
std::vector<base::FilePath> updated_suggestions(suggestions->size());
std::ranges::transform(*suggestions, updated_suggestions.begin(),
&FileSuggestData::file_path);
// No-op if `updated_suggestions` are unchanged.
const HoldingSpaceItem::Type item_type = GetItemTypeFromSuggestionType(type);
if (auto it = suggestions_by_type_.find(item_type);
it != suggestions_by_type_.end() && it->second == updated_suggestions) {
return;
}
// Update cache and model.
suggestions_by_type_[item_type] = std::move(updated_suggestions);
UpdateSuggestionsInModel();
}
void HoldingSpaceSuggestionsDelegate::UpdateSuggestionsInModel() {
std::vector<std::pair<HoldingSpaceItem::Type, base::FilePath>>
suggestion_items;
base::FilePath downloads_folder =
file_manager::util::GetDownloadsFolderForProfile(profile());
for (const auto& [type, suggested_file_paths] : suggestions_by_type_) {
for (const auto& file_path : suggested_file_paths) {
if (file_path != downloads_folder &&
!model()->ContainsItem(HoldingSpaceItem::Type::kPinnedFile,
file_path)) {
suggestion_items.emplace_back(type, file_path);
}
}
}
service()->SetSuggestions(suggestion_items);
}
} // namespace ash
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