// SPDX-FileCopyrightText: 2023 Joshua Goins <josh@redstrate.com>
// SPDX-License-Identifier: GPL-3.0-or-later

#include "hashdatabase.h"

#include <QSqlError>
#include <physis.hpp>

HashDatabase::HashDatabase(QObject *parent)
    : QObject(parent)
{
    m_db = QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"));
    m_db.setDatabaseName(QStringLiteral("customdb.db"));

    if (!m_db.open()) {
        qFatal() << "Failed to open custom db!";
    }

    QSqlQuery query;
    query.exec(QStringLiteral("CREATE TABLE IF NOT EXISTS folder_hashes (hash INTEGER PRIMARY KEY, name TEXT NOT NULL)"));
    query.exec(QStringLiteral("CREATE TABLE IF NOT EXISTS file_hashes (hash INTEGER PRIMARY KEY, name TEXT NOT NULL)"));
}

void HashDatabase::addFolder(QString folder)
{
    std::string folderStd = folder.toStdString();

    QSqlQuery query;
    query.prepare(
        QStringLiteral("REPLACE INTO folder_hashes (hash, name) "
                       "VALUES (?, ?)"));
    query.addBindValue(physis_generate_partial_hash(folderStd.c_str()));
    query.addBindValue(folder);
    query.exec();
}

void HashDatabase::addFile(QString file)
{
    QString filename = file;
    if (file.contains(QStringLiteral("/"))) {
        int lastSlash = file.lastIndexOf(QStringLiteral("/"));
        filename = file.sliced(lastSlash + 1, file.length() - lastSlash - 1);
    }

    qInfo() << filename;

    std::string folderStd = filename.toStdString();

    QSqlQuery query;
    query.prepare(
        QStringLiteral("REPLACE INTO file_hashes (hash, name) "
                       "VALUES (?, ?)"));
    query.addBindValue(physis_generate_partial_hash(folderStd.c_str()));
    query.addBindValue(filename);
    query.exec();
}

QVector<QString> HashDatabase::getKnownFolders()
{
    QSqlQuery query;
    query.exec(QStringLiteral("SELECT name FROM folder_hashes"));

    QVector<QString> folders;
    while (query.next()) {
        QString country = query.value(0).toString();
        folders.push_back(country);
    }

    return folders;
}

bool HashDatabase::knowsFile(const uint32_t i)
{
    QSqlQuery query;
    query.prepare(QStringLiteral("SELECT COUNT(1) FROM file_hashes WHERE hash = ?;"));
    query.addBindValue(i);
    query.exec();

    query.next();

    return query.value(0) == 1;
}

QString HashDatabase::getFilename(const uint32_t i)
{
    QSqlQuery query;
    query.prepare(QStringLiteral("SELECT name FROM file_hashes WHERE hash = ?;"));
    query.addBindValue(i);
    query.exec();

    query.next();

    return query.value(0).toString();
}