/* Copyright 2013-2018 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 "AccountListPage.h"
#include "ui_AccountListPage.h"

#include <QItemSelectionModel>

#include <QDebug>

#include "net/NetJob.h"
#include "net/URLConstants.h"
#include "Env.h"

#include "dialogs/ProgressDialog.h"
#include "dialogs/LoginDialog.h"
#include "dialogs/CustomMessageBox.h"
#include "dialogs/SkinUploadDialog.h"
#include "tasks/Task.h"
#include "minecraft/auth/YggdrasilTask.h"

#include "MultiMC.h"

AccountListPage::AccountListPage(QWidget *parent)
	: QWidget(parent), ui(new Ui::AccountListPage)
{
	ui->setupUi(this);
	ui->tabWidget->tabBar()->hide();

	m_accounts = MMC->accounts();

	ui->listView->setModel(m_accounts.get());
	ui->listView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);

	// Expand the account column
	ui->listView->header()->setSectionResizeMode(1, QHeaderView::Stretch);

	QItemSelectionModel *selectionModel = ui->listView->selectionModel();

	connect(selectionModel, &QItemSelectionModel::selectionChanged,
			[this](const QItemSelection &sel, const QItemSelection &dsel)
	{ updateButtonStates(); });

	connect(m_accounts.get(), SIGNAL(listChanged()), SLOT(listChanged()));
	connect(m_accounts.get(), SIGNAL(activeAccountChanged()), SLOT(listChanged()));

	updateButtonStates();
}

AccountListPage::~AccountListPage()
{
	delete ui;
}

void AccountListPage::listChanged()
{
	updateButtonStates();
}

void AccountListPage::on_addAccountBtn_clicked()
{
	addAccount(tr("Please enter your Mojang or Minecraft account username and password to add "
				  "your account."));
}

void AccountListPage::on_rmAccountBtn_clicked()
{
	QModelIndexList selection = ui->listView->selectionModel()->selectedIndexes();
	if (selection.size() > 0)
	{
		QModelIndex selected = selection.first();
		m_accounts->removeAccount(selected);
	}
}

void AccountListPage::on_setDefaultBtn_clicked()
{
	QModelIndexList selection = ui->listView->selectionModel()->selectedIndexes();
	if (selection.size() > 0)
	{
		QModelIndex selected = selection.first();
		MojangAccountPtr account =
			selected.data(MojangAccountList::PointerRole).value<MojangAccountPtr>();
		m_accounts->setActiveAccount(account->username());
	}
}

void AccountListPage::on_noDefaultBtn_clicked()
{
	m_accounts->setActiveAccount("");
}

void AccountListPage::updateButtonStates()
{
	// If there is no selection, disable buttons that require something selected.
	QModelIndexList selection = ui->listView->selectionModel()->selectedIndexes();

	ui->rmAccountBtn->setEnabled(selection.size() > 0);
	ui->setDefaultBtn->setEnabled(selection.size() > 0);
	ui->uploadSkinBtn->setEnabled(selection.size() > 0);

	ui->noDefaultBtn->setDown(m_accounts->activeAccount().get() == nullptr);
}

void AccountListPage::addAccount(const QString &errMsg)
{
	// TODO: The login dialog isn't quite done yet
	MojangAccountPtr account = LoginDialog::newAccount(this, errMsg);

	if (account != nullptr)
	{
		m_accounts->addAccount(account);
		if (m_accounts->count() == 1)
			m_accounts->setActiveAccount(account->username());

		// Grab associated player skins
		auto job = new NetJob("Player skins: " + account->username());

		for (AccountProfile profile : account->profiles())
		{
			auto meta = Env::getInstance().metacache()->resolveEntry("skins", profile.id + ".png");
			auto action = Net::Download::makeCached(QUrl("https://" + URLConstants::SKINS_BASE + profile.id + ".png"), meta);
			job->addNetAction(action);
			meta->setStale(true);
		}

		job->start();
	}
}

void AccountListPage::on_uploadSkinBtn_clicked()
{
	QModelIndexList selection = ui->listView->selectionModel()->selectedIndexes();
	if (selection.size() > 0)
	{
		QModelIndex selected = selection.first();
		MojangAccountPtr account = selected.data(MojangAccountList::PointerRole).value<MojangAccountPtr>();
		SkinUploadDialog dialog(account, this);
		dialog.exec();
	}
}