#include "choose.h"
#include "ai.h"
#include "login.h"
#include "marketing.h"

#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QDebug>
#include <QPixmap>
#include <QPainter>
#include <QLinearGradient>
#include <QFont>
#include <QTextToSpeech>
#include <QMediaPlayer>
#include <QMediaPlaylist>
#include <QScrollArea>
#include <QUrl>

// ================= GradientLabel =================
void GradientLabel::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing);

    QFont font = this->font();
    painter.setFont(font);

    QRect rect = this->rect().adjusted(contentsMargins().left(),
                                       contentsMargins().top(),
                                       -contentsMargins().right(),
                                       -contentsMargins().bottom());
    QString text = this->text();

    QLinearGradient gradient(0, 0, rect.width(), 0);
    gradient.setColorAt(0, QColor("#ff9a9e"));
    gradient.setColorAt(0.5, QColor("#ff6a95"));
    gradient.setColorAt(1, QColor("#fad0c4"));

    painter.setPen(QPen(QBrush(gradient), 0));
    painter.drawText(rect, alignment(), text);
}

// ================= choose 构造函数 =================
choose::choose(QWidget *parent)
    : QWidget(parent), aiPage(nullptr), loginPage(nullptr), marketingPage(nullptr)
{
    // 播放背景音乐
    QMediaPlaylist *musicList = new QMediaPlaylist(this);
    musicList->addMedia(QUrl::fromLocalFile("D:/sparking111dui/111/park/yun.wav"));
    QMediaPlayer *soundPlayer = new QMediaPlayer(this);
    soundPlayer->setPlaylist(musicList);
    soundPlayer->play();
    musicList->setPlaybackMode(QMediaPlaylist::CurrentItemInLoop);
    soundPlayer->setVolume(80);

    // 固定窗口大小
    resize(550, 400);
    setMinimumSize(550, 400);
    setMaximumSize(550, 400);

    // 背景图片
    photoLabel = new QLabel(this);
    photoLabel->setScaledContents(false);
    photoLabel->setGeometry(0, 0, width(), height());
    photoLabel->setAlignment(Qt::AlignCenter);
    QPixmap pixmap(":/choose.jpg");
    if (!pixmap.isNull()) {
        photoLabel->setPixmap(pixmap.scaled(photoLabel->size(),
                                            Qt::IgnoreAspectRatio,
                                            Qt::SmoothTransformation));
    } else {
        qDebug() << "图片加载失败，请检查路径";
    }

    // 顶部渐变文字
    titleLabel = new GradientLabel(this);
    titleLabel->setText("请选择您的角色");
    QFont titleFont("微软雅黑", 25, QFont::Bold);
    titleLabel->setFont(titleFont);
    titleLabel->setAlignment(Qt::AlignVCenter);

    QHBoxLayout *titleLayout = new QHBoxLayout();
    titleLayout->addSpacing(30);
    titleLayout->addWidget(titleLabel);
    titleLayout->addStretch();

    // 公告区域使用滚动条
    announcementLabel = new QLabel;
    announcementLabel->setWordWrap(true);
    announcementLabel->setText("停车场公告：\n"
                               "1. 请规范停放，车身完全入位，勿占消防通道、应急出口及他人专属车位。\n"
                               "2. 勿在车内存放现金、首饰等贵重物品，锁车后确认门窗是否关好。\n"
                               "3. 场内禁鸣笛、限速5km/h，儿童与宠物需成人全程看护。\n"
                               "4. 若遇车辆剐蹭、设备故障，联系管理员（电话：88888888）协助处理。\n"
                               "5. 遇暴雨、大风等恶劣天气，建议选择地下停车场或空旷且安全区域，避免车辆受损。\n"
                               "感谢您的理解与配合，祝您出行平安！");

    announcementLabel->setStyleSheet(
        "color: #000000;"
        "background: qlineargradient(x1:0, y1:0, x2:0, y2:1, "
        "stop:0 #fff0f2, stop:0.5 #fff5f8, stop:1 #fffafb);"
        "font: 11px '微软雅黑';"
        "padding: 5px;"
        "border-radius: 10px;"
    );

    scrollArea = new QScrollArea(this);
    scrollArea->setWidgetResizable(true);
    scrollArea->setWidget(announcementLabel);
    scrollArea->setFixedSize(300, 140);  // 公告可视区域
    scrollArea->move(width() - 320, 80);
    scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
    scrollArea->setStyleSheet(
        "QScrollArea {"
        "background: transparent;"
        "border: none;"
        "border-radius: 10px;"
        "}"
        "QScrollBar:vertical {"
        "width: 6px;"
        "background: transparent;"
        "margin: 0px;"
        "}"
        "QScrollBar::handle:vertical {"
        "background: rgba(200,200,200,150);"
        "border-radius: 3px;"
        "}"
    );

    // 按钮
    btnAI = new QPushButton("车主", this);
    btnLogin = new QPushButton("系统管理员", this);
    btnMarketing = new QPushButton("系统运营商", this);

    QString btnStyle = R"(
        QPushButton {
            background-color: qlineargradient(x1:0, y1:0, x2:1, y2:1,
                                              stop:0 #ff9a9e, stop:1 #fad0c4);
            color: white;
            font: bold 15px "微软雅黑";
            border-radius: 10px;
            padding: 8px 5px;
        }
        QPushButton:hover {
            background-color: qlineargradient(x1:0, y1:0, x2:1, y2:1,
                                              stop:0 #fad0c4, stop:1 #ff9a9e);
        }
        QPushButton:pressed {
            background-color: #f78ca0;
        }
    )";

    btnAI->setStyleSheet(btnStyle);
    btnLogin->setStyleSheet(btnStyle);
    btnMarketing->setStyleSheet(btnStyle);

    btnAI->setFixedSize(120,50);
    btnLogin->setFixedSize(120,50);
    btnMarketing->setFixedSize(120,50);

    QVBoxLayout *vLayout = new QVBoxLayout(this);
    vLayout->addSpacing(150);
    vLayout->addLayout(titleLayout);
    vLayout->addSpacing(42);

    QHBoxLayout *hLayout = new QHBoxLayout();
    hLayout->addStretch();
    hLayout->addWidget(btnAI);
    hLayout->addSpacing(30);
    hLayout->addWidget(btnLogin);
    hLayout->addSpacing(30);
    hLayout->addWidget(btnMarketing);
    hLayout->addStretch();

    vLayout->addLayout(hLayout);
    vLayout->addStretch(1);
    vLayout->setContentsMargins(0, 0, 0, 0);
    setLayout(vLayout);

    btnAI->raise();
    btnLogin->raise();
    btnMarketing->raise();
    titleLabel->raise();
    scrollArea->raise();

    // 语音播报
    tts = new QTextToSpeech(this);
    tts->say("请选择您的角色");

    // 信号槽
    connect(btnAI, &QPushButton::clicked, this, &choose::openAIPage);
    connect(btnLogin, &QPushButton::clicked, this, &choose::openLoginPage);
    connect(btnMarketing, &QPushButton::clicked, this, &choose::openMarketingPage);
}

choose::~choose()
{
    aiPage = nullptr;
    loginPage = nullptr;
    marketingPage = nullptr;
}

void choose::resizeEvent(QResizeEvent *event)
{
    photoLabel->setGeometry(0, 0, width(), height());
    QPixmap pixmap(":/choose.jpg");
    if (!pixmap.isNull()) {
        photoLabel->setPixmap(pixmap.scaled(photoLabel->size(),
                                            Qt::IgnoreAspectRatio,
                                            Qt::SmoothTransformation));
    }

    // 滚动公告自适应
    if (scrollArea) {
        scrollArea->move(width() - 320, 80);
    }

    QWidget::resizeEvent(event);
}

// 打开子页面
void choose::openAIPage()
{
    tts->say("您选择了车主");
    if (!aiPage) aiPage = new ai(nullptr, this);
    aiPage->show();
    this->hide();
}

void choose::openLoginPage()
{
    tts->say("您选择了系统管理员");
    if (!loginPage) loginPage = new login(nullptr, this);
    loginPage->show();
    this->hide();
}

void choose::openMarketingPage()
{
    tts->say("您选择了系统运营商");
    if (!marketingPage) marketingPage = new marketing(nullptr, this);
    marketingPage->show();
    this->hide();
}

// 设置公告文本（动态修改）
void choose::setAnnouncementText(const QString &text)
{
    if (!announcementLabel) return;
    announcementLabel->setText(text);
    announcementLabel->adjustSize();
}