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#include "adapter.h"
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
#include <QDebug>
#include <QtConcurrent/QtConcurrent>
void logWrapper(const char *str, void *data)
{
auto f = *reinterpret_cast<std::function<void(std::string)>*>(data);
f(std::string{str});
}
NissyAdapter::NissyAdapter()
{
// TODO: this list must be kept in sync with UI code, it is a bit ugly
std::vector<std::string> solverNames {
"h48h0k4",
"h48h1k2",
"h48h2k2",
"h48h3k2",
"h48h7k2",
};
for (auto s : solverNames)
initSolver(s);
writeLog = [&](std::string str) {
emit appendLog(QString::fromStdString(str));
};
nissy::set_logger(&logWrapper, &writeLog);
}
void NissyAdapter::initSolver(const std::string& s) {
auto se = nissy::solver::get(s);
if (std::holds_alternative<nissy::error>(se)) {
qDebug("Error loading solver!");
return;
}
auto ss = std::get<nissy::solver>(se);
solvers.push_back(ss);
}
bool NissyAdapter::loadSolverData(nissy::solver& solver) {
if (solver.data_checked)
return true;
std::filesystem::path filePath("./tables/" + solver.id);
if (!std::filesystem::exists(filePath)) {
logLine("Data file for solver " + solver.name + " not found, "
"generating it...");
auto err = solver.generate_data();
if (!err.ok()) {
emit solverError(QString("Error generating data!"));
return false;
}
std::filesystem::create_directory("./tables/");
std::ofstream ofs(filePath, std::ios::binary);
ofs.write(reinterpret_cast<char *>(solver.data.data()),
solver.size);
ofs.close();
logLine("Data generated succesfully");
} else {
logLine("Reading data for solver " + solver.name +
" from file");
std::ifstream ifs(filePath, std::ios::binary);
solver.read_data(ifs);
ifs.close();
logLine("Data loaded");
}
logLine("Checking data integrity "
"(this is done only once per solver per session)...");
if (!solver.check_data().ok()) {
emit solverError(QString("Error reading data!"));
return false;
}
logLine("Data checked");
return true;
}
Q_INVOKABLE bool NissyAdapter::isValidScramble(QString qscr)
{
nissy::cube c;
return c.move(qscr.toStdString()).ok();
}
Q_INVOKABLE void NissyAdapter::requestSolve(
QString scramble,
QString solver,
int minmoves,
int maxmoves,
int maxsolutions,
int optimal
)
{
nissy::cube c;
if (!c.move(scramble.toStdString()).ok()) {
emit solverError(QString("Unexpected error: invalid scramble"));
return;
}
nissy::solver *ss = nullptr;
for (auto& s : solvers)
if (s.name == solver)
ss = &s;
if (ss == nullptr) {
std::string msg = "Error: solver '" + solver.toStdString()
+ "' not available";
emit solverError(QString::fromStdString(msg));
return;
}
SolveOptions opts{c, ss, (unsigned)minmoves, (unsigned)maxmoves,
(unsigned)maxsolutions, (unsigned)optimal};
auto _ = QtConcurrent::run(&NissyAdapter::startSolve, this, opts);
return;
}
void NissyAdapter::startSolve(SolveOptions opts)
{
loadSolverData(*opts.solver);
auto result = opts.solver->solve(opts.cube, nissy::nissflag::NORMAL,
opts.minmoves, opts.maxmoves, opts.maxsolutions, opts.optimal, 8);
if (!result.err.ok()) {
std::string msg = "Error computing solutions: " +
std::to_string(result.err.value);
emit solverError(QString::fromStdString(msg));
return;
}
auto& sols = result.solutions;
if (sols.size() == 0) {
emit solutionsReady("No solution found", "");
} else {
std::stringstream hs;
hs << "Found " << sols.size() << " solution"
<< (sols.size() > 1 ? "s:" : ":");
std::stringstream ss;
for (auto s : sols) {
auto n = nissy::count_moves(s).value;
ss << s << " (" << n << ")" << std::endl; // TODO: remove last newline
}
emit solutionsReady(QString::fromStdString(hs.str()),
QString::fromStdString(ss.str()));
}
}
void NissyAdapter::logLine(std::string str)
{
std::stringstream ss;
ss << str << std::endl;
writeLog(ss.str());
}
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