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#include "commands/lua.hpp"
#include <memory>
#include <sol/forward.hpp>
#include <sol/load_result.hpp>
#include <sol/protected_function_result.hpp>
#include <sol/state.hpp>
#include <sol/table.hpp>
#include <string>
#include "bundle.hpp"
#include "commands/request.hpp"
#include "commands/response.hpp"
#include "commands/response_error.hpp"
#include "schemas/user.hpp"
#include "utils/chrono.hpp"
#include "utils/string.hpp"
namespace bot::command::lua {
namespace library {
void add_bot_library(std::shared_ptr<sol::state> state) {
state->set_function("bot_get_compiler_version", []() {
std::string info;
#ifdef __cplusplus
info.append("C++" + std::to_string(__cplusplus).substr(2, 2));
#endif
#ifdef __VERSION__
info.append(" (gcc " +
bot::utils::string::split_text(__VERSION__, ' ')[0] + ")");
#endif
return info;
});
state->set_function("bot_get_uptime", []() {
auto now = std::chrono::steady_clock::now();
auto duration = now - START_TIME;
auto seconds =
std::chrono::duration_cast<std::chrono::seconds>(duration).count();
return static_cast<long long>(seconds);
});
state->set_function("bot_get_memory_usage", []() {
struct rusage usage;
getrusage(RUSAGE_SELF, &usage);
return usage.ru_maxrss;
});
state->set_function("bot_get_compile_time",
[]() { return BOT_COMPILED_TIMESTAMP; });
state->set_function("bot_get_version", []() { return BOT_VERSION; });
}
void add_time_library(std::shared_ptr<sol::state> state) {
state->set_function("time_current", []() {
return static_cast<long long>(
std::chrono::duration_cast<std::chrono::seconds>(
std::chrono::steady_clock::now().time_since_epoch())
.count());
});
state->set_function("time_humanize", [](const int ×tamp) {
return utils::chrono::format_timestamp(timestamp);
});
}
}
std::string parse_lua_response(const sol::table &r, sol::object &res) {
if (res.get_type() == sol::type::function) {
sol::function f = res.as<sol::function>();
sol::object o = f(r);
return parse_lua_response(r, o);
} else if (res.get_type() == sol::type::string) {
return {"🌑 " + res.as<std::string>()};
} else if (res.get_type() == sol::type::number) {
return {"🌑 " + std::to_string(res.as<double>())};
} else if (res.get_type() == sol::type::boolean) {
return {"🌑 " + std::to_string(res.as<bool>())};
} else {
// should it be ResponseException?
return "Empty or unsupported response";
}
}
command::Response run_safe_lua_script(const Request &request,
const InstanceBundle &bundle,
const std::string &script) {
// shared_ptr is unnecessary here, but my library needs it.
std::shared_ptr<sol::state> state = std::make_shared<sol::state>();
state->open_libraries(sol::lib::base, sol::lib::table, sol::lib::string);
library::add_bot_library(state);
library::add_time_library(state);
sol::load_result s = state->load("return " + script);
if (!s.valid()) {
s = state->load(script);
}
if (!s.valid()) {
sol::error err = s;
throw ResponseException<ResponseError::LUA_EXECUTION_ERROR>(
request, bundle.localization, std::string(err.what()));
}
sol::protected_function_result res = s();
if (!res.valid()) {
sol::error err = s;
throw ResponseException<ResponseError::LUA_EXECUTION_ERROR>(
request, bundle.localization, std::string(err.what()));
}
sol::object o = res;
return parse_lua_response(request.as_lua_table(state), o);
}
LuaCommand::LuaCommand(std::shared_ptr<sol::state> luaState,
const std::string &script) {
this->luaState = luaState;
sol::table data = luaState->script(script);
this->name = data["name"];
this->delay = data["delay_sec"];
sol::table subcommands = data["subcommands"];
for (auto &k : subcommands) {
sol::object value = k.second;
if (value.is<std::string>()) {
this->subcommands.push_back(value.as<std::string>());
}
}
std::string rights_text = data["minimal_rights"];
if (rights_text == "suspended") {
this->level = schemas::PermissionLevel::SUSPENDED;
} else if (rights_text == "user") {
this->level = schemas::PermissionLevel::USER;
} else if (rights_text == "vip") {
this->level = schemas::PermissionLevel::VIP;
} else if (rights_text == "moderator") {
this->level = schemas::PermissionLevel::MODERATOR;
} else if (rights_text == "broadcaster") {
this->level = schemas::PermissionLevel::BROADCASTER;
} else {
this->level = schemas::PermissionLevel::USER;
}
this->handle = data["handle"];
}
Response LuaCommand::run(const InstanceBundle &bundle,
const Request &request) const {
sol::object response = this->handle(request.as_lua_table(this->luaState));
if (response.is<std::string>()) {
return {response.as<std::string>()};
} else if (response.is<sol::table>()) {
sol::table tbl = response.as<sol::table>();
std::vector<std::string> items;
for (auto &kv : tbl) {
sol::object value = kv.second;
if (value.is<std::string>()) {
items.push_back(value.as<std::string>());
}
}
return items;
}
return {};
}
}
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