/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */

#include <GemRepo/GemRepoInspector.h>
#include <GemRepo/GemRepoItemDelegate.h>

#include <QFrame>
#include <QLabel>
#include <QVBoxLayout>
#include <QIcon>

namespace O3DE::ProjectManager
{
    GemRepoInspector::GemRepoInspector(GemRepoModel* model, QWidget* parent)
        : QScrollArea(parent)
        , m_model(model)
    {
        setObjectName("gemRepoInspector");
        setWidgetResizable(true);
        setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

        m_mainWidget = new QWidget();
        setWidget(m_mainWidget);

        m_mainLayout = new QVBoxLayout();
        m_mainLayout->setMargin(15);
        m_mainLayout->setAlignment(Qt::AlignTop);
        m_mainWidget->setLayout(m_mainLayout);

        InitMainWidget();

        connect(m_model->GetSelectionModel(), &QItemSelectionModel::selectionChanged, this, &GemRepoInspector::OnSelectionChanged);
        Update({});
    }

    void GemRepoInspector::OnSelectionChanged(const QItemSelection& selected, [[maybe_unused]] const QItemSelection& deselected)
    {
        const QModelIndexList selectedIndices = selected.indexes();
        if (selectedIndices.empty())
        {
            Update({});
            return;
        }

        Update(selectedIndices[0]);
    }

    void GemRepoInspector::Update(const QModelIndex& modelIndex)
    {
        if (!modelIndex.isValid())
        {
            m_mainWidget->hide();
        }

        // Repo name and url link
        m_nameLabel->setText(m_model->GetName(modelIndex));
        m_repoLinkLabel->setText(m_model->GetRepoUri(modelIndex));
        m_repoLinkLabel->SetUrl(m_model->GetRepoUri(modelIndex));

        // Repo summary
        m_summaryLabel->setText(m_model->GetSummary(modelIndex));
        m_summaryLabel->adjustSize();

        // Additional information
        if (m_model->HasAdditionalInfo(modelIndex))
        {
            m_addInfoTitleLabel->show();
            m_addInfoTextLabel->show();

            m_addInfoSpacer->changeSize(0, 20, QSizePolicy::Fixed, QSizePolicy::Fixed);

            m_addInfoTextLabel->setText(m_model->GetAdditionalInfo(modelIndex));
        }
        else
        {
            m_addInfoTitleLabel->hide();
            m_addInfoTextLabel->hide();

            m_addInfoSpacer->changeSize(0, 0, QSizePolicy::Fixed, QSizePolicy::Fixed);
        }

        // Included Gems
        m_includedGems->Update(tr("Included Gems"), "", m_model->GetIncludedGemNames(modelIndex));

        m_mainWidget->adjustSize();
        m_mainWidget->show();
    }

    void GemRepoInspector::InitMainWidget()
    {
        // Repo name and url link
        m_nameLabel = new QLabel();
        m_nameLabel->setObjectName("gemRepoInspectorNameLabel");
        m_mainLayout->addWidget(m_nameLabel);

        m_repoLinkLabel = new LinkLabel(tr("Repo Url"), QUrl(), 12, this);
        m_mainLayout->addWidget(m_repoLinkLabel);
        m_mainLayout->addSpacing(5);

        // Repo summary
        m_summaryLabel = new QLabel();
        m_summaryLabel->setObjectName("gemRepoInspectorBodyLabel");
        m_summaryLabel->setWordWrap(true);
        m_summaryLabel->setTextInteractionFlags(Qt::TextBrowserInteraction);
        m_summaryLabel->setOpenExternalLinks(true);
        m_mainLayout->addWidget(m_summaryLabel);
        m_mainLayout->addSpacing(20);

        // Separating line
        QFrame* hLine = new QFrame();
        hLine->setFrameShape(QFrame::HLine);
        hLine->setObjectName("horizontalSeparatingLine");
        m_mainLayout->addWidget(hLine);
        m_mainLayout->addSpacing(10);

        // Additional information
        m_addInfoTitleLabel = new QLabel();
        m_addInfoTitleLabel->setObjectName("gemRepoInspectorAddInfoTitleLabel");
        m_addInfoTitleLabel->setText(tr("Additional Information"));
        m_mainLayout->addWidget(m_addInfoTitleLabel);

        m_addInfoTextLabel = new QLabel();
        m_addInfoTextLabel->setObjectName("gemRepoInspectorBodyLabel");
        m_addInfoTextLabel->setWordWrap(true);
        m_addInfoTextLabel->setTextInteractionFlags(Qt::TextBrowserInteraction);
        m_addInfoTextLabel->setOpenExternalLinks(true);
        m_mainLayout->addWidget(m_addInfoTextLabel);

        // Conditional spacing for additional info section
        m_addInfoSpacer = new QSpacerItem(0, 0, QSizePolicy::Expanding);
        m_mainLayout->addSpacerItem(m_addInfoSpacer);

        // Included Gems
        m_includedGems = new GemsSubWidget();
        m_mainLayout->addWidget(m_includedGems);
        m_mainLayout->addSpacing(20);
    }
} // namespace O3DE::ProjectManager