89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/telegram/files/FileId.h"
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#include "td/telegram/files/FileManager.h"
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#include "td/telegram/files/FileSourceId.h"
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#include "td/telegram/td_api.h"
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#include "td/actor/actor.h"
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#include "td/actor/PromiseFuture.h"
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#include "td/utils/common.h"
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#include "td/utils/Status.h"
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namespace td {
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class DownloadManager : public Actor {
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public:
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// creates, but do not starts the actor
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static unique_ptr<DownloadManager> create();
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struct Counters {
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int64 total_size{};
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int32 total_count{};
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int64 downloaded_size{};
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bool operator==(const Counters &other) const {
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return total_size == other.total_size && total_count == other.total_count &&
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downloaded_size == other.downloaded_size;
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}
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td_api::object_ptr<td_api::updateFileDownloads> get_update_file_downloads_object() const;
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template <class StorerT>
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void store(StorerT &storer) const;
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template <class ParserT>
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void parse(ParserT &parser);
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};
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// to make DownloadManager testable all interactions with G() must be hidden in this probably monstrous interface
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class Callback {
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public:
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virtual ~Callback() = default;
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virtual void update_counters(Counters counters) = 0;
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virtual void update_file_removed(FileId file_id) = 0;
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virtual void start_file(FileId file_id, int8 priority, uint64 link_token) = 0;
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virtual void pause_file(FileId file_id) = 0;
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virtual void delete_file(FileId file_id) = 0;
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virtual FileId dup_file_id(FileId file_id) = 0;
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virtual FileView get_file_view(FileId file_id) = 0;
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virtual td_api::object_ptr<td_api::fileDownload> get_file_download_object(FileId file_id,
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FileSourceId file_source_id,
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int32 add_date, int32 complete_date,
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bool is_paused) = 0;
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};
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//
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// public interface for user
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//
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// sets callback to handle all updates
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virtual void set_callback(unique_ptr<Callback> callback) = 0;
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// files are always added in is_paused = false state
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virtual Status add_file(FileId file_id, FileSourceId file_source_id, string search_text, int8 priority) = 0;
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virtual Status change_search_text(FileId file_id, FileSourceId file_source_id, string search_text) = 0;
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virtual Status toggle_is_paused(FileId file_id, bool is_paused) = 0;
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virtual Status toggle_all_is_paused(bool is_paused) = 0;
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virtual void search(string query, bool only_active, bool only_completed, string offset, int32 limit,
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Promise<td_api::object_ptr<td_api::foundFileDownloads>> promise) = 0;
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virtual Status remove_file(FileId file_id, FileSourceId file_source_id, bool delete_from_cache) = 0;
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virtual Status remove_all_files(bool only_active, bool only_completed, bool delete_from_cache) = 0;
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//
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// private interface to handle all kinds of updates
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//
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virtual void update_file_download_state(FileId internal_file_id, int64 download_size, int64 size, bool is_paused) = 0;
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virtual void update_file_deleted(FileId internal_file_id) = 0;
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};
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} // namespace td
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