#include "FTBPage.h"
#include "ui_FTBPage.h"

#include "MultiMC.h"
#include "FolderInstanceProvider.h"
#include "dialogs/CustomMessageBox.h"
#include "dialogs/NewInstanceDialog.h"
#include "modplatform/ftb/FtbPackDownloader.h"
#include "modplatform/ftb/FtbPackInstallTask.h"
#include <FtbListModel.h>

FTBPage::FTBPage(NewInstanceDialog* dialog, QWidget *parent)
	: QWidget(parent), dialog(dialog), ui(new Ui::FTBPage)
{
	ui->setupUi(this);
	ftbPackDownloader = new FtbPackDownloader();

	connect(ftbPackDownloader, &FtbPackDownloader::ready, this, &FTBPage::ftbPackDataDownloadSuccessfully);
	connect(ftbPackDownloader, &FtbPackDownloader::packFetchFailed, this, &FTBPage::ftbPackDataDownloadFailed);

	filterModel = new FtbFilterModel(this);
	listModel = new FtbListModel(this);
	filterModel->setSourceModel(listModel);

	ui->packList->setModel(filterModel);
	ui->packList->setSortingEnabled(true);
	ui->packList->header()->hide();
	ui->packList->setIndentation(0);

	filterModel->setSorting(FtbFilterModel::Sorting::ByName);

	for(int i = 0; i < filterModel->getAvailableSortings().size(); i++)
	{
		ui->sortByBox->addItem(filterModel->getAvailableSortings().keys().at(i));
	}

	ui->sortByBox->setCurrentText(filterModel->getAvailableSortings().key(filterModel->getCurrentSorting()));

	connect(ui->sortByBox, &QComboBox::currentTextChanged, this, &FTBPage::onSortingSelectionChanged);
	connect(ui->packVersionSelection, &QComboBox::currentTextChanged, this, &FTBPage::onVersionSelectionItemChanged);
	connect(ui->packList->selectionModel(), &QItemSelectionModel::currentChanged, this, &FTBPage::onPackSelectionChanged);

	ui->modpackInfo->setOpenExternalLinks(true);
}

FTBPage::~FTBPage()
{
	delete ui;
	if(ftbPackDownloader)
	{
		ftbPackDownloader->deleteLater();
	}
}

bool FTBPage::shouldDisplay() const
{
	return true;
}

void FTBPage::openedImpl()
{
	if(!initialized)
	{
		ftbPackDownloader->fetchModpacks(false);
		initialized = true;
	}
	suggestCurrent();
}

void FTBPage::suggestCurrent()
{
	if(isOpened)
	{
		if(!selected.broken)
		{
			dialog->setSuggestedPack(selected.name, new FtbPackInstallTask(selected, selectedVersion));
		}
		else
		{
			dialog->setSuggestedPack();
		}
	}
}

FtbPackDownloader *FTBPage::getFtbPackDownloader()
{
	return ftbPackDownloader;
}

void FTBPage::ftbPackDataDownloadSuccessfully()
{
	listModel->fill(ftbPackDownloader->getModpacks());
}

void FTBPage::ftbPackDataDownloadFailed()
{
	qDebug() << "Stuff went missing while grabbing FTB pack list or something...";
}

void FTBPage::onPackSelectionChanged(QModelIndex now, QModelIndex prev)
{
	ui->packVersionSelection->clear();
	FtbModpack selectedPack = filterModel->data(now, Qt::UserRole).value<FtbModpack>();

	ui->modpackInfo->setHtml("Pack by <b>" + selectedPack.author + "</b>" + "<br>Minecraft " + selectedPack.mcVersion + "<br>"
				"<br>" + selectedPack.description + "<ul><li>" + selectedPack.mods.replace(";", "</li><li>") + "</li></ul>");

	bool currentAdded = false;

	for(int i = 0; i < selectedPack.oldVersions.size(); i++)
	{
		if(selectedPack.currentVersion == selectedPack.oldVersions.at(i))
		{
			currentAdded = true;
		}
		ui->packVersionSelection->addItem(selectedPack.oldVersions.at(i));
	}

	if(!currentAdded)
	{
		ui->packVersionSelection->addItem(selectedPack.currentVersion);
	}

	selected = selectedPack;
	suggestCurrent();
}

void FTBPage::onVersionSelectionItemChanged(QString data)
{
	if(data.isNull() || data.isEmpty())
	{
		selectedVersion = "";
		return;
	}

	selectedVersion = data;
}

FtbModpack FTBPage::getSelectedModpack()
{
	return selected;
}

QString FTBPage::getSelectedVersion()
{
	return selectedVersion;
}

void FTBPage::onSortingSelectionChanged(QString data)
{
	filterModel->setSorting(filterModel->getAvailableSortings().value(data));
}