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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
namespace Ui {
class InputField;
} // namespace Ui
namespace Main {
class Session;
} // namespace Main
namespace Data {
void ApplyPeerCloudDraft(
not_null<Main::Session*> session,
PeerId peerId,
MsgId topicRootId,
const MTPDdraftMessage &draft);
void ClearPeerCloudDraft(
not_null<Main::Session*> session,
PeerId peerId,
MsgId topicRootId,
TimeId date);
enum class PreviewState : char {
Allowed,
Cancelled,
EmptyOnEdit,
};
struct Draft {
Draft() = default;
Draft(
const TextWithTags &textWithTags,
MsgId msgId,
MsgId topicRootId,
const MessageCursor &cursor,
PreviewState previewState,
mtpRequestId saveRequestId = 0);
Draft(
not_null<const Ui::InputField*> field,
MsgId msgId,
MsgId topicRootId,
PreviewState previewState,
mtpRequestId saveRequestId = 0);
TimeId date = 0;
TextWithTags textWithTags;
MsgId msgId = 0; // replyToId for message draft, editMsgId for edit draft
MsgId topicRootId = 0;
MessageCursor cursor;
PreviewState previewState = PreviewState::Allowed;
mtpRequestId saveRequestId = 0;
};
class DraftKey {
public:
[[nodiscard]] static constexpr DraftKey None() {
return 0;
}
[[nodiscard]] static constexpr DraftKey Local(MsgId topicRootId) {
return (topicRootId < 0 || topicRootId >= ServerMaxMsgId)
? None()
: (topicRootId ? topicRootId.bare : kLocalDraftIndex);
}
[[nodiscard]] static constexpr DraftKey LocalEdit(MsgId topicRootId) {
return (topicRootId < 0 || topicRootId >= ServerMaxMsgId)
? None()
: ((topicRootId ? topicRootId.bare : kLocalDraftIndex)
+ kEditDraftShift);
}
[[nodiscard]] static constexpr DraftKey Cloud(MsgId topicRootId) {
return (topicRootId < 0 || topicRootId >= ServerMaxMsgId)
? None()
: topicRootId
? (kCloudDraftShift + topicRootId.bare)
: kCloudDraftIndex;
}
[[nodiscard]] static constexpr DraftKey Scheduled() {
return kScheduledDraftIndex;
}
[[nodiscard]] static constexpr DraftKey ScheduledEdit() {
return kScheduledDraftIndex + kEditDraftShift;
}
[[nodiscard]] static constexpr DraftKey FromSerialized(qint64 value) {
return value;
}
[[nodiscard]] constexpr qint64 serialize() const {
return _value;
}
[[nodiscard]] static constexpr DraftKey FromSerializedOld(int32 value) {
return !value
? None()
: (value == kLocalDraftIndex + kEditDraftShiftOld)
? LocalEdit(0)
: (value == kScheduledDraftIndex + kEditDraftShiftOld)
? ScheduledEdit()
: (value > 0 && value < 0x4000'0000)
? Local(MsgId(value))
: (value > kEditDraftShiftOld
&& value < kEditDraftShiftOld + 0x4000'000)
? LocalEdit(int64(value - kEditDraftShiftOld))
: None();
}
[[nodiscard]] constexpr bool isLocal() const {
return (_value == kLocalDraftIndex)
|| (_value > 0 && _value < ServerMaxMsgId.bare);
}
[[nodiscard]] constexpr bool isCloud() const {
return (_value == kCloudDraftIndex)
|| (_value > kCloudDraftShift
&& _value < kCloudDraftShift + ServerMaxMsgId.bare);
}
[[nodiscard]] constexpr MsgId topicRootId() const {
const auto max = ServerMaxMsgId.bare;
if (_value > kCloudDraftShift && _value < kCloudDraftShift + max) {
return (_value - kCloudDraftShift);
} else if (_value > kEditDraftShift && _value < kEditDraftShift + max) {
return (_value - kEditDraftShift);
} else if (_value > 0 && _value < max) {
return _value;
}
return 0;
}
friend inline constexpr auto operator<=>(DraftKey, DraftKey) = default;
inline explicit operator bool() const {
return _value != 0;
}
private:
constexpr DraftKey(int64 value) : _value(value) {
}
static constexpr auto kLocalDraftIndex = -1;
static constexpr auto kCloudDraftIndex = -2;
static constexpr auto kScheduledDraftIndex = -3;
static constexpr auto kEditDraftShift = ServerMaxMsgId.bare;
static constexpr auto kCloudDraftShift = 2 * ServerMaxMsgId.bare;
static constexpr auto kEditDraftShiftOld = 0x3FFF'FFFF;
int64 _value = 0;
};
using HistoryDrafts = base::flat_map<DraftKey, std::unique_ptr<Draft>>;
[[nodiscard]] inline bool DraftStringIsEmpty(const QString &text) {
for (const auto &ch : text) {
if (!ch.isSpace()) {
return false;
}
}
return true;
}
[[nodiscard]] inline bool DraftIsNull(const Draft *draft) {
return !draft
|| (!draft->msgId && DraftStringIsEmpty(draft->textWithTags.text));
}
[[nodiscard]] inline bool DraftsAreEqual(const Draft *a, const Draft *b) {
const auto aIsNull = DraftIsNull(a);
const auto bIsNull = DraftIsNull(b);
if (aIsNull) {
return bIsNull;
} else if (bIsNull) {
return false;
}
return (a->textWithTags == b->textWithTags)
&& (a->msgId == b->msgId)
&& (a->previewState == b->previewState);
}
} // namespace Data
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