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// Copyright 2020 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_QUERY_TILES_INTERNAL_TILE_MANAGER_H_
#define COMPONENTS_QUERY_TILES_INTERNAL_TILE_MANAGER_H_
#include <memory>
#include <string>
#include <vector>
#include "base/functional/callback.h"
#include "components/query_tiles/internal/store.h"
#include "components/query_tiles/internal/tile_group.h"
#include "components/query_tiles/internal/tile_types.h"
#include "components/query_tiles/tile.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace query_tiles {
// Manages the in-memory tile group and coordinates with storage layer.
class TileManager {
public:
using TileStore = Store<TileGroup>;
using TileGroupStatusCallback = base::OnceCallback<void(TileGroupStatus)>;
using GetTilesCallback = base::OnceCallback<void(std::vector<Tile>)>;
using TileCallback = base::OnceCallback<void(absl::optional<Tile>)>;
// Creates the instance.
static std::unique_ptr<TileManager> Create(
std::unique_ptr<TileStore> tile_store,
const std::string& accept_languages);
// Initializes the query tile store, loading them into memory after
// validating.
virtual void Init(TileGroupStatusCallback callback) = 0;
// Returns tiles to the caller in the given |locale|.
virtual void GetTiles(bool shuffle_tiles, GetTilesCallback callback) = 0;
// Returns the tile associated with |tile_id| to the caller.
virtual void GetTile(const std::string& tile_id,
bool shuffle_tiles,
TileCallback callback) = 0;
// Save the query tiles into database.
virtual void SaveTiles(std::unique_ptr<TileGroup> tile_group,
TileGroupStatusCallback callback) = 0;
// Delete everything in db. Used for debugging in WebUI only.
virtual TileGroupStatus PurgeDb() = 0;
// Dump the group. Used for debugging in WebUI only.
virtual TileGroup* GetTileGroup() = 0;
// Called when a tile is clicked.
virtual void OnTileClicked(const std::string& tile_id) = 0;
// Called when the final query is formed. |parent_tile_id| is the parent
// Id of the last tile, if it exists.
virtual void OnQuerySelected(
const absl::optional<std::string>& parent_tile_id,
const std::u16string& query_text) = 0;
TileManager();
virtual ~TileManager() = default;
TileManager(const TileManager& other) = delete;
TileManager& operator=(const TileManager& other) = delete;
// ------------------------Testing------------------------
virtual void SetAcceptLanguagesForTesting(
const std::string& accept_languages) = 0;
};
} // namespace query_tiles
#endif // COMPONENTS_QUERY_TILES_INTERNAL_TILE_MANAGER_H_
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