#include "logdisplay.h"
#include <QFileSystemWatcher>
#include <QFile>
#include <QTextStream>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QCheckBox>
#include <QPlainTextEdit>
#include <QTextCursor>
#include <QToolBar>

LogDisplay::LogDisplay(QWidget *parent)
    : QMainWindow(parent)
{
    // Create the log display widget
    logDisplay = new QPlainTextEdit(this);
    logDisplay->setReadOnly(true);

    // Create the error checkbox
    errorCheckbox = new QCheckBox("Error", this);
    errorCheckbox->setChecked(true);

    // Create the warning checkbox
    warningCheckbox = new QCheckBox("Warning", this);
    warningCheckbox->setChecked(true);

    // Create the info checkbox
    infoCheckbox = new QCheckBox("Info", this);
    infoCheckbox->setChecked(true);

    // Create a horizontal layout for the checkboxes
    QHBoxLayout *checkboxLayout = new QHBoxLayout;
    checkboxLayout->addWidget(errorCheckbox);
    checkboxLayout->addWidget(warningCheckbox);
    checkboxLayout->addWidget(infoCheckbox);

    // Create a vertical layout for the log display and checkboxes
    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addWidget(logDisplay);
    mainLayout->addLayout(checkboxLayout);

    // Create a central widget and set its layout
    QWidget *centralWidget = new QWidget(this);
    centralWidget->setLayout(mainLayout);
    setCentralWidget(centralWidget);

    // Create a toolbar for the checkboxes
    QToolBar *filterToolBar = addToolBar("Filter");
    filterToolBar->addWidget(errorCheckbox);
    filterToolBar->addWidget(warningCheckbox);
    filterToolBar->addWidget(infoCheckbox);

    // Connect the checkbox state changed signals to the updateLogDisplay slot
    connect(errorCheckbox, &QCheckBox::stateChanged, this, &LogDisplay::updateLogDisplay);
    connect(warningCheckbox, &QCheckBox::stateChanged, this, &LogDisplay::updateLogDisplay);
    connect(infoCheckbox, &QCheckBox::stateChanged, this, &LogDisplay::updateLogDisplay);

    // Create a QFileSystemWatcher to monitor the log file
    QFileSystemWatcher *watcher = new QFileSystemWatcher(this);
    connect(watcher, &QFileSystemWatcher::fileChanged, this, &LogDisplay::updateLogList);
    watcher->addPath("log.txt");

    // Initialize the log display with the first set of logs
    updateLogList();
}

LogDisplay::~LogDisplay()
{
}

bool LogDisplay::updateLogList()
{
    // Open the log file
    QFile logFile("/home/arpitk/QT Projects/logtail1/sample.log");
    if (!logFile.open(QFile::ReadOnly | QFile::Text))
        return false;

    // Read the logs from the log file into the log line
    logList.clear();
    QTextStream in(&logFile);
    while (!in.atEnd()) {
    logList.prepend(in.readLine());
    }
    // Close the log file
    logFile.close();

    // Update the log display with the new logs
    updateLogDisplay();

    return true;
    }
void LogDisplay::updateLogDisplay()
{
// Clear the current log display
logDisplay->clear();
// Iterate over the logs in the log list
QTextCursor cursor(logDisplay->document());
for (int i = 0; i < logList.size(); ++i) {
    // Check if the log should be displayed based on the filter
    QString log = logList[i];
    if ((log.contains("Error") && errorCheckbox->isChecked()) ||
        (log.contains("Warning") && warningCheckbox->isChecked()) ||
        (log.contains("Info") && infoCheckbox->isChecked())) {
        // Insert the log into the log display
        cursor.insertText(log + "\n");
    }
}
}