#include "mainwindow.h"

#include <QFileDialog>
#include <QFont>
#include <QHBoxLayout>
#include <QMessageBox>
#include <QPushButton>
#include <QTextEdit>
#include <QVBoxLayout>
#include <QWidget>
#include <ctime>

#include "utils/logger.h"

void MainWindow::setupLogsTab() {
    logsTab_ = new QWidget(this);
    auto* layout = new QVBoxLayout(logsTab_);

    // 创建工具栏
    auto* toolBar = new QHBoxLayout();
    logRefreshButton_ = new QPushButton(tr("刷新"), logsTab_);
    logClearButton_ = new QPushButton(tr("清空"), logsTab_);
    logExportButton_ = new QPushButton(tr("导出"), logsTab_);

    toolBar->addWidget(logRefreshButton_);
    toolBar->addWidget(logClearButton_);
    toolBar->addWidget(logExportButton_);
    toolBar->addStretch(1);
    layout->addLayout(toolBar);

    // 创建日志显示区域
    logDisplay_ = new QTextEdit(logsTab_);
    logDisplay_->setReadOnly(true);
    logDisplay_->setFont(QFont("Courier", 9));
    layout->addWidget(logDisplay_);

    // 连接按钮信号
    connect(logRefreshButton_, &QPushButton::clicked, this, &MainWindow::refreshLogDisplay);
    connect(logClearButton_, &QPushButton::clicked, this, &MainWindow::clearLogs);
    connect(logExportButton_, &QPushButton::clicked, this, &MainWindow::exportLogs);

    // 初始化日志显示
    refreshLogDisplay();
}

void MainWindow::refreshLogDisplay() {
    logDisplay_->clear();
    const auto& entries = logger_.getEntries();
    
    QString content;
    for (const auto& entry : entries) {
        content += QString::fromStdString(entry.format()) + "\n";
    }
    
    if (content.isEmpty()) {
        logDisplay_->setText(tr("暂无日志记录"));
    } else {
        logDisplay_->setText(content);
        // 滚动到最后
        QTextCursor cursor = logDisplay_->textCursor();
        cursor.movePosition(QTextCursor::End);
        logDisplay_->setTextCursor(cursor);
    }
}

void MainWindow::clearLogs() {
    QMessageBox::StandardButton reply = QMessageBox::question(
        this,
        tr("清空日志"),
        tr("确定要清空所有日志记录吗？此操作无法撤销。"),
        QMessageBox::Yes | QMessageBox::No
    );
    
    if (reply == QMessageBox::Yes) {
        logger_.clear();
        refreshLogDisplay();
        QMessageBox::information(this, tr("清空完成"), tr("所有日志已清空"));
    }
}

void MainWindow::exportLogs() {
    QString fileName = QFileDialog::getSaveFileName(
        this,
        tr("导出日志"),
        dataFolder_ + "/logs_" + QString::number(std::time(nullptr)) + ".txt",
        tr("文本文件 (*.txt);;所有文件 (*)")
    );
    
    if (!fileName.isEmpty()) {
        bool success = logger_.exportToFile(fileName.toStdString());
        if (success) {
            QMessageBox::information(
                this,
                tr("导出成功"),
                tr("日志已成功导出到:\n") + fileName
            );
        } else {
            QMessageBox::warning(
                this,
                tr("导出失败"),
                tr("无法写入文件")
            );
        }
    }
}

void MainWindow::logOperation(LogEntryType type, const std::string& operation,
                              const std::string& details, const std::string& objectId) {
    logger_.log(type, operation, details, objectId);
    // 如果当前在日志页面，自动刷新显示
    if (navList_->currentRow() == 6) { // 日志页是第7个（0-based索引为6）
        refreshLogDisplay();
    }
}