from PyQt6.QtWidgets import (
    QApplication, QWidget, QVBoxLayout, QLabel, QGridLayout, QProgressBar
)
from PyQt6.QtCore import Qt, QTimer
import sys

class LoadingScreen(QWidget):
    def __init__(self):
        super().__init__()
        self.setFixedSize(960, 640)
        self.setWindowTitle("서버 모니터링 - 로딩 중")
        layout = QVBoxLayout()
        layout.setAlignment(Qt.AlignmentFlag.AlignCenter)

        self.label = QLabel("서버 상태를 불러오는 중...")
        self.label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.spinner = QProgressBar()
        self.spinner.setRange(0, 0)  # 무한 로딩 표시

        layout.addWidget(self.label)
        layout.addWidget(self.spinner)
        self.setLayout(layout)

class MonitoringGrid(QWidget):
    def __init__(self):
        super().__init__()
        self.setFixedSize(960, 640)
        self.setWindowTitle("서버 모니터링")

        grid = QGridLayout()
        grid.setSpacing(10)

        for row in range(3):
            for col in range(4):
                label = QLabel(f"서버 {row * 3 + col + 1}")
                label.setStyleSheet("background-color: #e0e0e0; padding: 20px; border: 1px solid #aaa;")
                label.setAlignment(Qt.AlignmentFlag.AlignCenter)
                grid.addWidget(label, row, col)

        self.setLayout(grid)

class MainApp:
    def __init__(self):
        self.app = QApplication(sys.argv)
        self.loading = LoadingScreen()
        self.grid = MonitoringGrid()

    def run(self):
        self.loading.show()

        # 3초 후 로딩 화면 종료하고 그리드 표시
        QTimer.singleShot(3000, self.show_grid)
        sys.exit(self.app.exec())

    def show_grid(self):
        self.loading.close()
        self.grid.show()

if __name__ == "__main__":
    MainApp().run()