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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/telegram/ReactionType.h"
#include "td/telegram/misc.h"
#include "td/utils/algorithm.h"
#include "td/utils/as.h"
#include "td/utils/base64.h"
#include "td/utils/crypto.h"
#include "td/utils/emoji.h"
#include "td/utils/logging.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/utf8.h"
namespace td {
static int64 get_custom_emoji_id(const string &reaction) {
auto r_decoded = base64_decode(Slice(&reaction[1], reaction.size() - 1));
CHECK(r_decoded.is_ok());
CHECK(r_decoded.ok().size() == 8);
return as<int64>(r_decoded.ok().c_str());
}
static string get_custom_emoji_string(int64 custom_emoji_id) {
char s[8];
as<int64>(&s) = custom_emoji_id;
return PSTRING() << '#' << base64_encode(Slice(s, 8));
}
ReactionType::ReactionType(string &&emoji) : reaction_(std::move(emoji)) {
}
ReactionType::ReactionType(const telegram_api::object_ptr<telegram_api::Reaction> &reaction) {
if (reaction == nullptr) {
return;
}
switch (reaction->get_id()) {
case telegram_api::reactionEmpty::ID:
break;
case telegram_api::reactionEmoji::ID:
reaction_ = static_cast<const telegram_api::reactionEmoji *>(reaction.get())->emoticon_;
if (is_custom_reaction() || is_paid_reaction()) {
reaction_ = string();
}
break;
case telegram_api::reactionCustomEmoji::ID:
reaction_ =
get_custom_emoji_string(static_cast<const telegram_api::reactionCustomEmoji *>(reaction.get())->document_id_);
break;
case telegram_api::reactionPaid::ID:
reaction_ = "$";
break;
default:
UNREACHABLE();
break;
}
}
ReactionType::ReactionType(const td_api::object_ptr<td_api::ReactionType> &type) {
if (type == nullptr) {
return;
}
switch (type->get_id()) {
case td_api::reactionTypeEmoji::ID: {
const string &emoji = static_cast<const td_api::reactionTypeEmoji *>(type.get())->emoji_;
if (!check_utf8(emoji)) {
break;
}
reaction_ = emoji;
if (is_custom_reaction() || is_paid_reaction()) {
reaction_ = string();
break;
}
break;
}
case td_api::reactionTypeCustomEmoji::ID:
reaction_ =
get_custom_emoji_string(static_cast<const td_api::reactionTypeCustomEmoji *>(type.get())->custom_emoji_id_);
break;
case td_api::reactionTypePaid::ID:
reaction_ = "$";
break;
default:
UNREACHABLE();
break;
}
}
ReactionType ReactionType::paid() {
ReactionType reaction_type;
reaction_type.reaction_ = "$";
return reaction_type;
}
vector<ReactionType> ReactionType::get_reaction_types(
const vector<telegram_api::object_ptr<telegram_api::Reaction>> &reactions) {
return transform(reactions, [](const auto &reaction) { return ReactionType(reaction); });
}
vector<ReactionType> ReactionType::get_reaction_types(
const vector<td_api::object_ptr<td_api::ReactionType>> &reactions) {
return transform(reactions, [](const auto &reaction) { return ReactionType(reaction); });
}
vector<telegram_api::object_ptr<telegram_api::Reaction>> ReactionType::get_input_reactions(
const vector<ReactionType> &reaction_types) {
return transform(reaction_types,
[](const ReactionType &reaction_type) { return reaction_type.get_input_reaction(); });
}
vector<td_api::object_ptr<td_api::ReactionType>> ReactionType::get_reaction_types_object(
const vector<ReactionType> &reaction_types, bool paid_reactions_available) {
vector<td_api::object_ptr<td_api::ReactionType>> result;
result.reserve(reaction_types.size() + (paid_reactions_available ? 1 : 0));
if (paid_reactions_available) {
result.push_back(paid().get_reaction_type_object());
}
for (auto &reaction_type : reaction_types) {
result.push_back(reaction_type.get_reaction_type_object());
}
return result;
}
telegram_api::object_ptr<telegram_api::Reaction> ReactionType::get_input_reaction() const {
if (is_empty()) {
return telegram_api::make_object<telegram_api::reactionEmpty>();
}
if (is_custom_reaction()) {
return telegram_api::make_object<telegram_api::reactionCustomEmoji>(get_custom_emoji_id(reaction_));
}
if (is_paid_reaction()) {
return telegram_api::make_object<telegram_api::reactionPaid>();
}
return telegram_api::make_object<telegram_api::reactionEmoji>(reaction_);
}
td_api::object_ptr<td_api::ReactionType> ReactionType::get_reaction_type_object() const {
if (is_empty()) {
return nullptr;
}
if (is_custom_reaction()) {
return td_api::make_object<td_api::reactionTypeCustomEmoji>(get_custom_emoji_id(reaction_));
}
if (is_paid_reaction()) {
return td_api::make_object<td_api::reactionTypePaid>();
}
return td_api::make_object<td_api::reactionTypeEmoji>(reaction_);
}
td_api::object_ptr<td_api::updateDefaultReactionType> ReactionType::get_update_default_reaction_type() const {
if (is_empty()) {
return nullptr;
}
return td_api::make_object<td_api::updateDefaultReactionType>(get_reaction_type_object());
}
uint64 ReactionType::get_hash() const {
if (is_custom_reaction()) {
return static_cast<uint64>(get_custom_emoji_id(reaction_));
} else {
return get_md5_string_hash(remove_emoji_selectors(reaction_));
}
}
bool ReactionType::is_custom_reaction() const {
return reaction_[0] == '#';
}
bool ReactionType::is_paid_reaction() const {
return reaction_ == "$";
}
bool ReactionType::is_active_reaction(
const FlatHashMap<ReactionType, size_t, ReactionTypeHash> &active_reaction_pos) const {
return !is_empty() && (is_custom_reaction() || is_paid_reaction() || active_reaction_pos.count(*this) > 0);
}
bool operator<(const ReactionType &lhs, const ReactionType &rhs) {
if (lhs.is_paid_reaction()) {
return !rhs.is_paid_reaction();
}
if (rhs.is_paid_reaction()) {
return false;
}
return lhs.reaction_ < rhs.reaction_;
}
bool operator==(const ReactionType &lhs, const ReactionType &rhs) {
return lhs.reaction_ == rhs.reaction_;
}
StringBuilder &operator<<(StringBuilder &string_builder, const ReactionType &reaction_type) {
if (reaction_type.is_empty()) {
return string_builder << "empty reaction";
}
if (reaction_type.is_custom_reaction()) {
return string_builder << "custom reaction " << get_custom_emoji_id(reaction_type.reaction_);
}
if (reaction_type.is_paid_reaction()) {
return string_builder << "paid reaction";
}
return string_builder << "reaction " << reaction_type.reaction_;
}
int64 get_reaction_types_hash(const vector<ReactionType> &reaction_types) {
vector<uint64> numbers;
for (auto &reaction_type : reaction_types) {
if (reaction_type.is_custom_reaction()) {
auto custom_emoji_id = static_cast<uint64>(get_custom_emoji_id(reaction_type.get_string()));
numbers.push_back(custom_emoji_id >> 32);
numbers.push_back(custom_emoji_id & 0xFFFFFFFF);
} else {
if (reaction_type.is_paid_reaction()) {
LOG(ERROR) << "Have paid reaction";
}
auto emoji = remove_emoji_selectors(reaction_type.get_string());
unsigned char hash[16];
md5(emoji, {hash, sizeof(hash)});
auto get = [hash](int num) {
return static_cast<uint32>(hash[num]);
};
numbers.push_back(0);
numbers.push_back(static_cast<int32>((get(0) << 24) + (get(1) << 16) + (get(2) << 8) + get(3)));
}
}
return get_vector_hash(numbers);
}
} // namespace td
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