#include "addfrienddialog.h"


/////////////////////////////////////////
//表示一个好友搜索的结果
/////////////////////////////////////////
FriendResultItem::FriendResultItem(const UserInfo& userInfo)
    :userInfo(userInfo)
{
    // 1. 设置基本属性
    this->setFixedHeight(70);
    this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);

    // 2. 创建布局管理器
    QGridLayout* layout = new QGridLayout();
    layout->setVerticalSpacing(0);
    layout->setHorizontalSpacing(10);
    layout->setContentsMargins(0, 0, 20, 0);
    this->setLayout(layout);

    // 3. 创建头像
    QPushButton* avatarBtn = new QPushButton();
    avatarBtn->setFixedSize(50, 50);
    avatarBtn->setIconSize(QSize(50, 50));
    avatarBtn->setIcon(userInfo.avatar);

    // 4. 创建昵称
    QLabel* nameLabel = new QLabel();
    nameLabel->setFixedHeight(35);		// 整个 Item 高度是 70. 昵称和个性签名各自占一半.
    nameLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    nameLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
    nameLabel->setStyleSheet("QLabel { font-size: 16px; font-weight: 700;}");
    nameLabel->setText(userInfo.nickname);

    // 5. 创建个性签名
    QLabel* descLabel = new QLabel();
    descLabel->setFixedHeight(35);
    descLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    descLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
    descLabel->setStyleSheet("QLabel { font-size: 14px; }");
    descLabel->setText(userInfo.description);

    // 6. 创建添加好友按钮
    addBtn = new QPushButton();
    addBtn->setFixedSize(100, 40);
    addBtn->setText("添加好友");
    QString btnStyle = "QPushButton { border: none; background-color: rgb(137, 217, 97); color: rgb(255, 255, 255); border-radius: 10px;} ";
    btnStyle += "QPushButton:pressed { background-color: rgb(200, 200, 200); }";
    addBtn->setStyleSheet(btnStyle);

    // 7. 把上述内容, 添加到布局管理器中
    layout->addWidget(avatarBtn, 0, 0, 2, 1);
    layout->addWidget(nameLabel, 0, 1);
    layout->addWidget(descLabel, 1, 1);
    layout->addWidget(addBtn, 0, 2, 2, 1);

    // 8. 连接信号槽
    //connect(addBtn, &QPushButton::clicked, this, &FriendResultItem::clickAddBtn);

}

/////////////////////////////////////////
//整个搜索好友的窗口
/////////////////////////////////////////
AddFriendDialog::AddFriendDialog(QWidget *parent)
	: QDialog(parent)
{
    // 1. 设置基本属性
    this->setFixedSize(500, 500);
    this->setWindowTitle("添加好友");
    this->setWindowIcon(QIcon(":/resource/image/logo.png"));
    this->setStyleSheet("QDialog {background-color: rgb(255, 255, 255); }");
    this->setAttribute(Qt::WA_DeleteOnClose);	// 不要忘记这个属性!!!

    // 2. 添加布局管理器
    layout = new QGridLayout();
    layout->setSpacing(10);
    layout->setContentsMargins(20, 20, 20, 0);
    this->setLayout(layout);

    // 3. 创建搜索框
    searchEdit = new QLineEdit();
    searchEdit->setFixedHeight(50);
    searchEdit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    QString style = "QLineEdit { border: none; border-radius: 10px; font-size: 16px; color: rgb(129, 129, 129); background-color: rgb(240, 240, 240); padding-left: 5px;}";
    searchEdit->setStyleSheet(style);
    searchEdit->setPlaceholderText("按手机号/用户序号/昵称搜索");
    layout->addWidget(searchEdit, 0, 0, 1, 8);

    // 4. 创建搜索按钮
    QPushButton* searchBtn = new QPushButton();
    searchBtn->setFixedSize(50, 50);
    searchBtn->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
    searchBtn->setIconSize(QSize(30, 30));
    searchBtn->setIcon(QIcon(":/resource/image/search.png"));
    QString btnStyle = "QPushButton { border: none; background-color: rgb(240, 240, 240); border-radius: 10px; }";
    btnStyle += "QPushButton:hover { background-color: rgb(220, 220, 220); } QPushButton:pressed { background-color: rgb(200, 200, 200); } ";
    searchBtn->setStyleSheet(btnStyle);
    layout->addWidget(searchBtn, 0, 8, 1, 1);

    // 5. 添加滚动区域
    initResultArea();

    // 构造假的数据, 验证界面效果
#if TEST_UI
    QIcon avatar(":/resource/image/defaultAvatar.png");
    for (int i = 0; i < 20; ++i) {
        // new 出来这个对象, 再往 addResult 中添加. FriendResultItem 中持有了 UserInfo 的 const 引用. 需要确保引用是有效的引用
        UserInfo* userInfo = new UserInfo();
        userInfo->userId = QString::number(1000 + i);
        userInfo->nickname = "张三" + QString::number(i);
        userInfo->description = "这是一段个性签名";
        userInfo->avatar = avatar;
        this->addResult(*userInfo);
    }
#endif
//
//    // 6. 连接信号槽
//    connect(searchBtn, &QPushButton::clicked, this, &AddFriendDialog::clickSearchBtn);

}

void AddFriendDialog::initResultArea()
{
    // 1. 创建滚动区域对象
    QScrollArea* scrollArea = new QScrollArea();
    scrollArea->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    scrollArea->setWidgetResizable(true);
    scrollArea->horizontalScrollBar()->setStyleSheet("QScrollBar:horizontal {height: 0;} ");
    scrollArea->verticalScrollBar()->setStyleSheet("QScrollBar:vertical {width: 2px; background-color: rgb(255, 255, 255);}");
    scrollArea->setStyleSheet("QScrollArea { border: none; }");
    layout->addWidget(scrollArea, 1, 0, 1, 9);

    // 2. 创建 QWidget
    resultContainer = new QWidget();
    resultContainer->setObjectName("resultContainer");
    resultContainer->setStyleSheet("#resultContainer { background-color: rgb(255, 255, 255); } ");
    scrollArea->setWidget(resultContainer);

    // 3. 给这个 QWidget 里面添加元素, 需要给它创建垂直的布局管理器
    QVBoxLayout* vlayout = new QVBoxLayout();
    vlayout->setSpacing(0);
    vlayout->setContentsMargins(0, 0, 0, 0);
    resultContainer->setLayout(vlayout);

}

void AddFriendDialog::addResult(const UserInfo& userInfo)
{
    FriendResultItem* item = new FriendResultItem(userInfo);
    resultContainer->layout()->addWidget(item);
}

void AddFriendDialog::clear()
{
    // 从后向前遍历
    QVBoxLayout* layout = dynamic_cast<QVBoxLayout*>(resultContainer->layout());
    for (int i = layout->count() - 1; i >= 0; i--) {
        QLayoutItem* layoutItem = layout->takeAt(i);
        if (layoutItem == nullptr || layoutItem->widget() == nullptr) {
            continue;
        }
        //删除这里面所持有的元素
        delete layoutItem->widget();
    }
}

void AddFriendDialog::setSearchKey(const QString& searcheKey)
{
    searchEdit->setText(searcheKey);
}