#include "props/EntityPropertySection.h"

#include "params/ParamControls.h"

#include <QDoubleSpinBox>
#include <QFormLayout>
#include <QHBoxLayout>
#include <QCheckBox>
#include <QLabel>
#include <QLineEdit>
#include <QListWidget>
#include <QPushButton>
#include <QTextEdit>
#include <QTimer>
#include <QToolButton>
#include <QVBoxLayout>

namespace gui {

EntityPropertySection::EntityPropertySection(QWidget* parent)
    : PropertySectionWidget(parent) {
    auto* lay = new QVBoxLayout(this);
    lay->setContentsMargins(0, 0, 0, 0);
    lay->setSpacing(6);

    auto* form = new QFormLayout();
    form->setContentsMargins(0, 0, 0, 0);
    form->setSpacing(6);

    m_name = new QLineEdit(this);
    m_name->setPlaceholderText(QStringLiteral("显示名称"));
    m_name->setToolTip(QStringLiteral("仅显示用；内部 id 不变"));
    form->addRow(QStringLiteral("名称"), m_name);

    m_depth = new QLabel(QStringLiteral("-"), this);
    m_distScale = new QLabel(QStringLiteral("-"), this);
    for (QLabel* lab : {m_depth, m_distScale}) {
        lab->setTextInteractionFlags(Qt::TextSelectableByMouse);
    }
    form->addRow(QStringLiteral("深度"), m_depth);
    form->addRow(QStringLiteral("距离缩放"), m_distScale);

    m_pivot = new Vec2ParamControl(this);
    m_pivot->setToolTip(QStringLiteral("枢轴在世界坐标中的位置（限制在轮廓包络内），用于重定位局部原点"));
    form->addRow(QStringLiteral("中心坐标"), m_pivot);

    m_centroid = new Vec2ParamControl(this);
    m_centroid->setToolTip(QStringLiteral("实体几何质心的世界坐标；修改将整体平移实体"));
    form->addRow(QStringLiteral("位置"), m_centroid);

    m_userScale = new QDoubleSpinBox(this);
    m_userScale->setRange(0.05, 20.0);
    m_userScale->setDecimals(3);
    m_userScale->setSingleStep(0.05);
    m_userScale->setValue(1.0);
    m_userScale->setToolTip(QStringLiteral("人为整体缩放，与深度距离缩放相乘"));
    form->addRow(QStringLiteral("整体缩放"), m_userScale);

    m_ignoreDistanceScale = new QCheckBox(QStringLiteral("不受距离缩放影响"), this);
    m_ignoreDistanceScale->setToolTip(QStringLiteral("开启后实体不受深度驱动的距离缩放影响，仅受整体缩放影响（对话气泡默认开启）"));
    form->addRow(QStringLiteral("距离缩放"), m_ignoreDistanceScale);

    m_visible = new QCheckBox(QString(), this);
    m_visible->setChecked(true);
    m_visible->setToolTip(QStringLiteral("随帧变化：在当前帧切换会写入可见性关键帧（10帧淡入淡出）"));
    form->addRow(QStringLiteral("可见性"), m_visible);

    lay->addLayout(form);

    m_introHeader = new QWidget(this);
    auto* headLay = new QHBoxLayout(m_introHeader);
    headLay->setContentsMargins(0, 2, 0, 2);
    headLay->setSpacing(6);
    m_introToggle = new QToolButton(m_introHeader);
    m_introToggle->setAutoRaise(true);
    m_introToggle->setToolButtonStyle(Qt::ToolButtonTextOnly);
    m_introToggle->setCursor(Qt::PointingHandCursor);
    m_introToggle->setToolTip(QStringLiteral("展开或折叠介绍设置"));
    m_introToggle->setText(QStringLiteral("▶"));
    m_introToggle->setFixedWidth(22);
    auto* introTitleLab = new QLabel(QStringLiteral("介绍"), m_introHeader);
    introTitleLab->setStyleSheet(QStringLiteral("QLabel { font-weight: 600; }"));
    headLay->addWidget(m_introToggle, 0, Qt::AlignVCenter);
    headLay->addWidget(introTitleLab, 1, Qt::AlignVCenter);

    m_introContent = new QWidget(this);
    auto* introLay = new QVBoxLayout(m_introContent);
    introLay->setContentsMargins(8, 4, 0, 0);
    introLay->setSpacing(6);

    m_introTitle = new QLineEdit(m_introContent);
    m_introTitle->setPlaceholderText(QStringLiteral("标题"));
    introLay->addWidget(new QLabel(QStringLiteral("标题"), m_introContent));
    introLay->addWidget(m_introTitle);

    m_introBody = new QTextEdit(m_introContent);
    m_introBody->setPlaceholderText(QStringLiteral("正文（纯文本）"));
    m_introBody->setMaximumHeight(100);
    introLay->addWidget(new QLabel(QStringLiteral("正文"), m_introContent));
    introLay->addWidget(m_introBody);

    m_introImages = new QListWidget(m_introContent);
    m_introImages->setMinimumHeight(72);
    m_introImages->setToolTip(QStringLiteral("配图相对路径列表；使用下方按钮从文件添加"));
    introLay->addWidget(new QLabel(QStringLiteral("配图"), m_introContent));
    introLay->addWidget(m_introImages);

    auto* imgRow = new QHBoxLayout();
    m_btnIntroAddImage = new QPushButton(QStringLiteral("添加配图…"), m_introContent);
    m_btnIntroRemoveImage = new QPushButton(QStringLiteral("移除选中"), m_introContent);
    imgRow->addWidget(m_btnIntroAddImage);
    imgRow->addWidget(m_btnIntroRemoveImage);
    introLay->addLayout(imgRow);

    m_introVideo = new QLineEdit(m_introContent);
    m_introVideo->setPlaceholderText(QStringLiteral("可选：视频相对路径（如 assets/entities/xxx.mp4）"));
    introLay->addWidget(new QLabel(QStringLiteral("视频路径（预留）"), m_introContent));
    introLay->addWidget(m_introVideo);

    lay->addWidget(m_introHeader);
    lay->addWidget(m_introContent);
    lay->addStretch(1);

    m_introContent->setVisible(false);

    m_introSaveTimer = new QTimer(this);
    m_introSaveTimer->setSingleShot(true);
    connect(m_introSaveTimer, &QTimer::timeout, this, [this]() {
        if (!m_introBulkUpdate) {
            emit introContentEdited();
        }
    });

    connect(m_introToggle, &QToolButton::clicked, this, [this]() {
        setIntroSectionExpanded(!m_introContent->isVisible());
    });

    connect(m_name, &QLineEdit::editingFinished, this, [this]() {
        if (m_name) {
            emit displayNameCommitted(m_name->text());
        }
    });
    connect(m_pivot, &Vec2ParamControl::valueChanged, this, &EntityPropertySection::pivotEdited);
    connect(m_centroid, &Vec2ParamControl::valueChanged, this, &EntityPropertySection::centroidEdited);
    connect(m_userScale, qOverload<double>(&QDoubleSpinBox::valueChanged), this, &EntityPropertySection::userScaleEdited);
    connect(m_ignoreDistanceScale, &QCheckBox::toggled, this, &EntityPropertySection::ignoreDistanceScaleToggled);
    connect(m_visible, &QCheckBox::toggled, this, &EntityPropertySection::visibleToggled);

    connect(m_introTitle, &QLineEdit::textChanged, this, [this](const QString&) { scheduleIntroPersist(); });
    connect(m_introBody, &QTextEdit::textChanged, this, [this]() { scheduleIntroPersist(); });
    connect(m_introVideo, &QLineEdit::textChanged, this, [this](const QString&) { scheduleIntroPersist(); });

    connect(m_btnIntroAddImage, &QPushButton::clicked, this, &EntityPropertySection::introAddImageRequested);
    connect(m_btnIntroRemoveImage, &QPushButton::clicked, this, [this]() {
        if (!m_introImages || !m_introImages->currentItem()) {
            return;
        }
        delete m_introImages->takeItem(m_introImages->currentRow());
        scheduleIntroPersist();
    });
}

void EntityPropertySection::setIntroSectionExpanded(bool expanded) {
    if (!m_introContent || !m_introToggle) {
        return;
    }
    m_introContent->setVisible(expanded);
    m_introToggle->setText(expanded ? QStringLiteral("▼") : QStringLiteral("▶"));
}

void EntityPropertySection::scheduleIntroPersist() {
    if (m_introBulkUpdate || !m_introSaveTimer) {
        return;
    }
    m_introSaveTimer->start(400);
}

void EntityPropertySection::clearDisconnected() {
    if (m_introSaveTimer) {
        m_introSaveTimer->stop();
    }
    m_introBulkUpdate = true;
    setEditingEnabled(false);
    if (m_name) {
        m_name->blockSignals(true);
        m_name->clear();
        m_name->blockSignals(false);
    }
    if (m_depth) m_depth->setText(QStringLiteral("-"));
    if (m_distScale) m_distScale->setText(QStringLiteral("-"));
    if (m_pivot) m_pivot->setValue(0.0, 0.0);
    if (m_centroid) m_centroid->setValue(0.0, 0.0);
    if (m_userScale) {
        m_userScale->blockSignals(true);
        m_userScale->setValue(1.0);
        m_userScale->blockSignals(false);
    }
    if (m_ignoreDistanceScale) {
        m_ignoreDistanceScale->blockSignals(true);
        m_ignoreDistanceScale->setChecked(false);
        m_ignoreDistanceScale->blockSignals(false);
    }
    if (m_visible) {
        m_visible->blockSignals(true);
        m_visible->setChecked(true);
        m_visible->blockSignals(false);
    }
    if (m_introTitle) {
        m_introTitle->blockSignals(true);
        m_introTitle->clear();
        m_introTitle->blockSignals(false);
    }
    if (m_introBody) {
        m_introBody->blockSignals(true);
        m_introBody->clear();
        m_introBody->blockSignals(false);
    }
    if (m_introVideo) {
        m_introVideo->blockSignals(true);
        m_introVideo->clear();
        m_introVideo->blockSignals(false);
    }
    if (m_introImages) m_introImages->clear();
    setIntroSectionExpanded(false);
    m_introBulkUpdate = false;
}

void EntityPropertySection::applyState(const EntityPropertyUiState& s) {
    if (m_introSaveTimer) {
        m_introSaveTimer->stop();
    }
    m_introBulkUpdate = true;

    setEditingEnabled(true);
    if (m_name) {
        m_name->blockSignals(true);
        m_name->setText(s.displayName);
        m_name->blockSignals(false);
    }
    if (m_depth) m_depth->setText(QString::number(s.depthZ));
    if (m_distScale) m_distScale->setText(s.distanceScaleText);
    if (m_pivot) m_pivot->setValue(s.pivot.x(), s.pivot.y());
    if (m_centroid) m_centroid->setValue(s.centroid.x(), s.centroid.y());
    if (m_userScale) {
        m_userScale->blockSignals(true);
        m_userScale->setValue(s.userScale);
        m_userScale->blockSignals(false);
    }
    if (m_ignoreDistanceScale) {
        m_ignoreDistanceScale->blockSignals(true);
        m_ignoreDistanceScale->setChecked(s.ignoreDistanceScale);
        m_ignoreDistanceScale->blockSignals(false);
    }
    if (m_visible) {
        m_visible->blockSignals(true);
        m_visible->setChecked(s.visible);
        m_visible->blockSignals(false);
    }
    if (m_introTitle) {
        m_introTitle->blockSignals(true);
        m_introTitle->setText(s.intro.title);
        m_introTitle->blockSignals(false);
    }
    if (m_introBody) {
        m_introBody->blockSignals(true);
        m_introBody->setPlainText(s.intro.bodyText);
        m_introBody->blockSignals(false);
    }
    if (m_introVideo) {
        m_introVideo->blockSignals(true);
        m_introVideo->setText(s.intro.videoPathRelative);
        m_introVideo->blockSignals(false);
    }
    if (m_introImages) {
        m_introImages->clear();
        for (const QString& p : s.intro.imagePathsRelative) {
            if (!p.isEmpty()) {
                auto* it = new QListWidgetItem(p, m_introImages);
                it->setData(Qt::UserRole, p);
            }
        }
    }
    setIntroSectionExpanded(false);
    m_introBulkUpdate = false;
}

void EntityPropertySection::appendIntroImagePath(const QString& relativePath) {
    if (!m_introImages || relativePath.isEmpty()) {
        return;
    }
    auto* it = new QListWidgetItem(relativePath, m_introImages);
    it->setData(Qt::UserRole, relativePath);
    scheduleIntroPersist();
}

core::EntityIntroContent EntityPropertySection::introSnapshot() const {
    core::EntityIntroContent out;
    if (m_introTitle) {
        out.title = m_introTitle->text();
    }
    if (m_introBody) {
        out.bodyText = m_introBody->toPlainText();
    }
    if (m_introVideo) {
        out.videoPathRelative = m_introVideo->text().trimmed();
    }
    if (m_introImages) {
        for (int i = 0; i < m_introImages->count(); ++i) {
            const QString p = m_introImages->item(i)->data(Qt::UserRole).toString();
            if (!p.isEmpty()) {
                out.imagePathsRelative.push_back(p);
            }
        }
    }
    return out;
}

void EntityPropertySection::setEditingEnabled(bool on) {
    if (m_name) m_name->setEnabled(on);
    if (m_pivot) m_pivot->setEnabled(on);
    if (m_centroid) m_centroid->setEnabled(on);
    if (m_userScale) m_userScale->setEnabled(on);
    if (m_ignoreDistanceScale) m_ignoreDistanceScale->setEnabled(on);
    if (m_visible) m_visible->setEnabled(on);
    if (m_introHeader) m_introHeader->setEnabled(on);
    if (m_introToggle) m_introToggle->setEnabled(on);
    if (m_introTitle) m_introTitle->setEnabled(on);
    if (m_introBody) m_introBody->setEnabled(on);
    if (m_introVideo) m_introVideo->setEnabled(on);
    if (m_introImages) m_introImages->setEnabled(on);
    if (m_btnIntroAddImage) m_btnIntroAddImage->setEnabled(on);
    if (m_btnIntroRemoveImage) m_btnIntroRemoveImage->setEnabled(on);
}

}  // namespace gui