#include "mainwindow.h"
#include "plotwidget.h"
#include "udpreceiver.h"
#include "datamanager.h"

#include <QApplication>
#include <QStatusBar>
#include <QSplitter>
#include <QScrollArea>
#include <QDebug>
#include <QDir>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , m_udpReceiver(new UdpReceiver(this))
    , m_dataManager(new DataManager(this))
    , m_isReceiving(false)
    , m_packetCount(0)
{
    setWindowTitle("AiAnalysis - AI数据实时分析");
    setupUi();

    // UDP数据接收
    connect(m_udpReceiver, &UdpReceiver::dataReceived, this, &MainWindow::onDataReceived);
    connect(m_udpReceiver, &UdpReceiver::errorOccurred, this, [this](const QString &err) {
        QMessageBox::warning(this, "错误", err);
    });
}

MainWindow::~MainWindow()
{
    stopReceiving();
}

void MainWindow::setupUi()
{
    QWidget *centralWidget = new QWidget(this);
    setCentralWidget(centralWidget);

    QVBoxLayout *mainLayout = new QVBoxLayout(centralWidget);
    mainLayout->setContentsMargins(8, 8, 8, 8);
    mainLayout->setSpacing(6);

    // ========== 顶部控制栏 ==========
    QHBoxLayout *controlLayout = new QHBoxLayout();

    QLabel *portLabel = new QLabel("UDP端口:");
    portLabel->setStyleSheet("color: #ccc; font-size: 13px;");

    m_portEdit = new QLineEdit();
    m_portEdit->setPlaceholderText("输入端口号");
    m_portEdit->setMaximumWidth(120);
    m_portEdit->setStyleSheet(
        "QLineEdit { background: #2a2a3e; color: #fff; border: 1px solid #555; "
        "border-radius: 4px; padding: 4px 8px; font-size: 13px; }"
    );

    m_startStopBtn = new QPushButton("开始监听");
    m_startStopBtn->setStyleSheet(
        "QPushButton { background: #2ecc71; color: #fff; border: none; "
        "border-radius: 4px; padding: 6px 20px; font-size: 13px; font-weight: bold; }"
        "QPushButton:hover { background: #27ae60; }"
    );
    connect(m_startStopBtn, &QPushButton::clicked, this, &MainWindow::onStartStop);

    m_openFileBtn = new QPushButton("打开文件");
    m_openFileBtn->setStyleSheet(
        "QPushButton { background: #3498db; color: #fff; border: none; "
        "border-radius: 4px; padding: 6px 16px; font-size: 13px; }"
        "QPushButton:hover { background: #2980b9; }"
    );
    connect(m_openFileBtn, &QPushButton::clicked, this, &MainWindow::onOpenFile);

    m_clearBtn = new QPushButton("清除");
    m_clearBtn->setStyleSheet(
        "QPushButton { background: #e74c3c; color: #fff; border: none; "
        "border-radius: 4px; padding: 6px 16px; font-size: 13px; }"
        "QPushButton:hover { background: #c0392b; }"
    );
    connect(m_clearBtn, &QPushButton::clicked, this, &MainWindow::onClear);

    controlLayout->addWidget(portLabel);
    controlLayout->addWidget(m_portEdit);
    controlLayout->addWidget(m_startStopBtn);
    controlLayout->addSpacing(20);
    controlLayout->addWidget(m_openFileBtn);
    controlLayout->addWidget(m_clearBtn);
    controlLayout->addStretch();

    mainLayout->addLayout(controlLayout);

    // ========== 中间区域: 绘图 + 通道选择 ==========
    QHBoxLayout *centerLayout = new QHBoxLayout();

    // 绘图区域
    m_plotWidget = new PlotWidget(this);
    m_plotWidget->setTitle("AI 数据实时波形");
    centerLayout->addWidget(m_plotWidget, 1);

    // 右侧通道选择面板
    QGroupBox *channelGroup = new QGroupBox("通道选择");
    channelGroup->setStyleSheet(
        "QGroupBox { color: #ccc; border: 1px solid #444; border-radius: 4px; "
        "margin-top: 12px; padding-top: 16px; font-size: 12px; }"
        "QGroupBox::title { subcontrol-origin: margin; left: 10px; }"
    );

    QVBoxLayout *channelLayout = new QVBoxLayout(channelGroup);
    channelLayout->setSpacing(2);

    for (int i = 0; i < 16; ++i) {
        QCheckBox *check = new QCheckBox(QString("ch%1").arg(i));
        check->setChecked(true);
        check->setStyleSheet(
            "QCheckBox { color: #aaa; font-size: 11px; spacing: 4px; }"
            "QCheckBox::indicator { width: 12px; height: 12px; }"
            "QCheckBox::indicator:checked { background: #3498db; }"
        );
        connect(check, &QCheckBox::toggled, this, [this, i](bool checked) {
            onToggleChannel(i, checked);
        });
        channelLayout->addWidget(check);
        m_channelChecks.append(check);
    }

    channelLayout->addStretch();

    QScrollArea *scrollArea = new QScrollArea();
    scrollArea->setWidget(channelGroup);
    scrollArea->setWidgetResizable(true);
    scrollArea->setMaximumWidth(120);
    scrollArea->setStyleSheet("QScrollArea { border: none; background: transparent; }");

    centerLayout->addWidget(scrollArea);
    mainLayout->addLayout(centerLayout, 1);

    // ========== 底部状态栏 ==========
    QHBoxLayout *statusLayout = new QHBoxLayout();

    m_statusLabel = new QLabel("就绪 - 等待开始监听");
    m_statusLabel->setStyleSheet("color: #888; font-size: 12px;");

    m_packetLabel = new QLabel("收到: 0 包");
    m_packetLabel->setStyleSheet("color: #888; font-size: 12px;");

    QLabel *hintLabel = new QLabel("提示: 滚轮缩放 | 右键拖拽平移 | 双击恢复自动范围");
    hintLabel->setStyleSheet("color: #555; font-size: 11px;");

    statusLayout->addWidget(m_statusLabel);
    statusLayout->addStretch();
    statusLayout->addWidget(m_packetLabel);
    statusLayout->addSpacing(20);
    statusLayout->addWidget(hintLabel);

    mainLayout->addLayout(statusLayout);

    // 全局样式
    setStyleSheet("QMainWindow { background-color: #1a1a2e; }");
}

void MainWindow::onStartStop()
{
    if (m_isReceiving) {
        stopReceiving();
    } else {
        startReceiving();
    }
}

void MainWindow::startReceiving()
{
    bool ok;
    quint16 port = m_portEdit->text().toUShort(&ok);
    if (!ok || port == 0) {
        QMessageBox::warning(this, "错误", "请输入有效的端口号 (1-65535)");
        return;
    }

    if (!m_udpReceiver->start(port)) {
        return;
    }

    // 清除旧数据
    m_plotWidget->clear();
    m_packetCount = 0;
    m_packetLabel->setText("收到: 0 包");

    // 创建数据保存目录
    m_dataDir = QApplication::applicationDirPath() + "/data_" + QString::number(port);
    m_dataManager->startRecording(m_dataDir);

    m_isReceiving = true;
    m_portEdit->setEnabled(false);
    m_startStopBtn->setText("停止监听");
    m_startStopBtn->setStyleSheet(
        "QPushButton { background: #e74c3c; color: #fff; border: none; "
        "border-radius: 4px; padding: 6px 20px; font-size: 13px; font-weight: bold; }"
        "QPushButton:hover { background: #c0392b; }"
    );

    m_statusLabel->setText(QString("监听中 - 端口 %1 | 保存至 %2").arg(port).arg(m_dataDir));
    m_statusLabel->setStyleSheet("color: #2ecc71; font-size: 12px;");
}

void MainWindow::stopReceiving()
{
    m_udpReceiver->stop();
    m_dataManager->stopRecording();

    m_isReceiving = false;
    m_portEdit->setEnabled(true);
    m_startStopBtn->setText("开始监听");
    m_startStopBtn->setStyleSheet(
        "QPushButton { background: #2ecc71; color: #fff; border: none; "
        "border-radius: 4px; padding: 6px 20px; font-size: 13px; font-weight: bold; }"
        "QPushButton:hover { background: #27ae60; }"
    );

    m_statusLabel->setText(QString("已停止 - 共收到 %1 包").arg(m_packetCount));
    m_statusLabel->setStyleSheet("color: #e74c3c; font-size: 12px;");
}

void MainWindow::onOpenFile()
{
    QString filePath = QFileDialog::getOpenFileName(
        this, "打开数据文件", m_dataDir, "CSV文件 (*.csv);;所有文件 (*)");

    if (filePath.isEmpty()) return;

    stopReceiving();
    loadAndDisplayFile(filePath);
}

void MainWindow::loadAndDisplayFile(const QString &filePath)
{
    QString error;
    auto channels = DataManager::loadFile(filePath, error);

    if (!error.isEmpty() && channels[0].isEmpty()) {
        QMessageBox::warning(this, "错误", error);
        return;
    }

    m_plotWidget->setAllData(channels);
    m_plotWidget->setTitle(QString("回放: %1").arg(QFileInfo(filePath).fileName()));

    m_statusLabel->setText(QString("回放模式 - %1 | %2 个数据点")
        .arg(QFileInfo(filePath).fileName())
        .arg(m_plotWidget->totalPoints()));
    m_statusLabel->setStyleSheet("color: #3498db; font-size: 12px;");

    m_packetLabel->setText(QString("已加载: %1 点").arg(m_plotWidget->totalPoints()));
}

void MainWindow::onClear()
{
    m_plotWidget->clear();
    m_packetCount = 0;
    m_packetLabel->setText("收到: 0 包");
    m_statusLabel->setText("已清除");
    m_statusLabel->setStyleSheet("color: #888; font-size: 12px;");
}

void MainWindow::onDataReceived(const QByteArray &data)
{
    QString raw = QString::fromUtf8(data).trimmed();
    if (raw.isEmpty()) return;

    // 可能一个UDP包包含多行
    QStringList lines = raw.split('\n', QString::SkipEmptyParts);
    for (const QString &line : lines) {
        processDataLine(line.trimmed());
    }
}

void MainWindow::processDataLine(const QString &line)
{
    QStringList parts = line.split(',');
    if (parts.size() < 16) return;

    QVector<int> values(16);
    bool allOk = true;
    for (int i = 0; i < 16; ++i) {
        bool ok;
        values[i] = parts[i].toInt(&ok);
        if (!ok) {
            allOk = false;
            break;
        }
    }

    if (!allOk) return;

    // 转换为double给绘图
    QVector<double> dvalues(16);
    for (int i = 0; i < 16; ++i) {
        dvalues[i] = static_cast<double>(values[i]);
    }

    m_plotWidget->addDataPoint(dvalues);
    m_dataManager->appendDataPoint(values);

    m_packetCount++;
    m_packetLabel->setText(QString("收到: %1 包").arg(m_packetCount));
}

void MainWindow::onToggleChannel(int channel, bool visible)
{
    m_plotWidget->setChannelVisible(channel, visible);
}