// SPDX-License-Identifier: GPL-3.0-only
/*
 *  Prism Launcher - Minecraft Launcher
 *  Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
 *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, version 3.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 *      Copyright 2013-2021 MultiMC Contributors
 *
 *      Licensed under the Apache License, Version 2.0 (the "License");
 *      you may not use this file except in compliance with the License.
 *      You may obtain a copy of the License at
 *
 *          http://www.apache.org/licenses/LICENSE-2.0
 *
 *      Unless required by applicable law or agreed to in writing, software
 *      distributed under the License is distributed on an "AS IS" BASIS,
 *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *      See the License for the specific language governing permissions and
 *      limitations under the License.
 */

#include "ModFolderModel.h"

#include <FileSystem.h>
#include <QDebug>
#include <QFileSystemWatcher>
#include <QHeaderView>
#include <QIcon>
#include <QMimeData>
#include <QString>
#include <QStyle>
#include <QThreadPool>
#include <QUrl>
#include <QUuid>
#include <algorithm>

#include "Application.h"

#include "Json.h"
#include "minecraft/mod/tasks/LocalModParseTask.h"
#include "minecraft/mod/tasks/LocalResourceUpdateTask.h"
#include "modplatform/ModIndex.h"
#include "modplatform/flame/FlameAPI.h"
#include "modplatform/flame/FlameModIndex.h"

ModFolderModel::ModFolderModel(const QDir& dir, BaseInstance* instance, bool is_indexed, bool create_dir, QObject* parent)
    : ResourceFolderModel(QDir(dir), instance, is_indexed, create_dir, parent)
{
    m_column_names = QStringList({ "Enable", "Image", "Name", "Version", "Last Modified", "Provider", "Size", "Side", "Loaders",
                                   "Minecraft Versions", "Release Type" });
    m_column_names_translated = QStringList({ tr("Enable"), tr("Image"), tr("Name"), tr("Version"), tr("Last Modified"), tr("Provider"),
                                              tr("Size"), tr("Side"), tr("Loaders"), tr("Minecraft Versions"), tr("Release Type") });
    m_column_sort_keys = { SortType::ENABLED, SortType::NAME,        SortType::NAME,        SortType::VERSION,
                           SortType::DATE,    SortType::PROVIDER,    SortType::SIZE,        SortType::SIDE,
                           SortType::LOADERS, SortType::MC_VERSIONS, SortType::RELEASE_TYPE };
    m_column_resize_modes = { QHeaderView::Interactive, QHeaderView::Interactive, QHeaderView::Stretch,     QHeaderView::Interactive,
                              QHeaderView::Interactive, QHeaderView::Interactive, QHeaderView::Interactive, QHeaderView::Interactive,
                              QHeaderView::Interactive, QHeaderView::Interactive, QHeaderView::Interactive };
    m_columnsHideable = { false, true, false, true, true, true, true, true, true, true, true };
    m_columnsHiddenByDefault = { false, false, false, false, false, false, false, true, true, true, true };
}

QVariant ModFolderModel::data(const QModelIndex& index, int role) const
{
    if (!validateIndex(index))
        return {};

    int row = index.row();
    int column = index.column();

    switch (role) {
        case Qt::DisplayRole:
            switch (column) {
                case NameColumn:
                    return m_resources[row]->name();
                case VersionColumn: {
                    switch (at(row).type()) {
                        case ResourceType::FOLDER:
                            return tr("Folder");
                        case ResourceType::SINGLEFILE:
                            return tr("File");
                        default:
                            break;
                    }
                    return at(row).version();
                }
                case DateColumn:
                    return at(row).dateTimeChanged();
                case ProviderColumn: {
                    return at(row).provider();
                }
                case SideColumn: {
                    return at(row).side();
                }
                case LoadersColumn: {
                    return at(row).loaders();
                }
                case McVersionsColumn: {
                    return at(row).mcVersions();
                }
                case ReleaseTypeColumn: {
                    return at(row).releaseType();
                }
                case SizeColumn:
                    return at(row).sizeStr();
                default:
                    return QVariant();
            }

        case Qt::ToolTipRole:
            if (column == NameColumn) {
                if (at(row).isSymLinkUnder(instDirPath())) {
                    return m_resources[row]->internal_id() +
                           tr("\nWarning: This resource is symbolically linked from elsewhere. Editing it will also change the original."
                              "\nCanonical Path: %1")
                               .arg(at(row).fileinfo().canonicalFilePath());
                }
                if (at(row).isMoreThanOneHardLink()) {
                    return m_resources[row]->internal_id() +
                           tr("\nWarning: This resource is hard linked elsewhere. Editing it will also change the original.");
                }
            }
            return m_resources[row]->internal_id();
        case Qt::DecorationRole: {
            if (column == NameColumn && (at(row).isSymLinkUnder(instDirPath()) || at(row).isMoreThanOneHardLink()))
                return APPLICATION->getThemedIcon("status-yellow");
            if (column == ImageColumn) {
                return at(row).icon({ 32, 32 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding);
            }
            return {};
        }
        case Qt::SizeHintRole:
            if (column == ImageColumn) {
                return QSize(32, 32);
            }
            return {};
        case Qt::CheckStateRole:
            switch (column) {
                case ActiveColumn:
                    return at(row).enabled() ? Qt::Checked : Qt::Unchecked;
                default:
                    return QVariant();
            }
        default:
            return QVariant();
    }
}

QVariant ModFolderModel::headerData(int section, [[maybe_unused]] Qt::Orientation orientation, int role) const
{
    switch (role) {
        case Qt::DisplayRole:
            switch (section) {
                case ActiveColumn:
                case NameColumn:
                case VersionColumn:
                case DateColumn:
                case ProviderColumn:
                case ImageColumn:
                case SideColumn:
                case LoadersColumn:
                case McVersionsColumn:
                case ReleaseTypeColumn:
                case SizeColumn:
                    return columnNames().at(section);
                default:
                    return QVariant();
            }

        case Qt::ToolTipRole:
            switch (section) {
                case ActiveColumn:
                    return tr("Is the mod enabled?");
                case NameColumn:
                    return tr("The name of the mod.");
                case VersionColumn:
                    return tr("The version of the mod.");
                case DateColumn:
                    return tr("The date and time this mod was last changed (or added).");
                case ProviderColumn:
                    return tr("The source provider of the mod.");
                case SideColumn:
                    return tr("On what environment the mod is running.");
                case LoadersColumn:
                    return tr("The mod loader.");
                case McVersionsColumn:
                    return tr("The supported minecraft versions.");
                case ReleaseTypeColumn:
                    return tr("The release type.");
                case SizeColumn:
                    return tr("The size of the mod.");
                default:
                    return QVariant();
            }
        default:
            return QVariant();
    }
    return QVariant();
}

int ModFolderModel::columnCount(const QModelIndex& parent) const
{
    return parent.isValid() ? 0 : NUM_COLUMNS;
}

Task* ModFolderModel::createParseTask(Resource& resource)
{
    return new LocalModParseTask(m_next_resolution_ticket, resource.type(), resource.fileinfo());
}

bool ModFolderModel::isValid()
{
    return m_dir.exists() && m_dir.isReadable();
}

void ModFolderModel::onParseSucceeded(int ticket, QString mod_id)
{
    auto iter = m_active_parse_tasks.constFind(ticket);
    if (iter == m_active_parse_tasks.constEnd())
        return;

    int row = m_resources_index[mod_id];

    auto parse_task = *iter;
    auto cast_task = static_cast<LocalModParseTask*>(parse_task.get());

    Q_ASSERT(cast_task->token() == ticket);

    auto resource = find(mod_id);

    auto result = cast_task->result();
    if (result && resource)
        resource->finishResolvingWithDetails(std::move(result->details));

    emit dataChanged(index(row), index(row, columnCount(QModelIndex()) - 1));
}