import os.path
import error
from ui.mainwindow import Ui_mainWindow

from PyQt6 import QtWidgets
from PyQt6.QtWidgets import QMainWindow, QFileDialog, QMessageBox, QToolBar
from PyQt6.QtCore import QSettings, QFileInfo, Qt
from PyQt6.QtGui import QAction
import datetime
from PWFile import ControlFile


class MainWindow(QMainWindow, Ui_mainWindow):
    @staticmethod
    def _test_if_file_occupied(file_path):
        if not os.path.exists(file_path):
            return False
        try:
            with open(file_path, "wb") as file:
                pass
            return False
        except PermissionError:
            return True

    def open_dialog(self):
        z_control_file_paths = QFileDialog.getOpenFileNames(
            self,
            "打开Excel文件",
            filter="Excel 文件(*.xlsx)",
            directory=self._setting.value("last_working_directory"),
        )[0]
        for z_control_file_path in z_control_file_paths:
            if z_control_file_path != "":
                cf = ControlFile(
                    z_control_file_path,
                    close_cad_document=self.cBCloseCadDoc.isChecked(),
                )
                if self._test_if_file_occupied(cf.get_zt_dwg_file_path()):
                    QMessageBox.warning(
                        self, "注意", f"{cf.get_zt_dwg_file_path()}被占用，请先关闭。"
                    )
                    return
                try:
                    cf.draw()
                except error.DWGFileNotExistError as dwg_not_exist_exception:
                    QMessageBox.warning(
                        self,
                        "错误",
                        f"DWG文件{dwg_not_exist_exception.not_exist_dwg_file_path}不存在。",
                    )
                    continue
                self.statusBar().showMessage(
                    f"{datetime.datetime.now()}   Finished.", 8000
                )
                file_info = QFileInfo(z_control_file_path)
                self._setting.setValue(
                    "last_working_directory", file_info.absoluteDir().absolutePath()
                )
                zfile_name = file_info.baseName()
                QMessageBox.information(self, "提示", zfile_name + "断面图已生成。")

    def _cBCloseCadDocClicked(self):
        self._setting.setValue("close_cad", self.cBCloseCadDoc.isChecked())

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setupUi(self)
        self.pBOpenControlZFile.clicked.connect(self.open_dialog)
        self._setting = QSettings("NWEPDI", "Plate", self)
        if not self._setting.value("close_cad"):
            self.cBCloseCadDoc.setChecked(False)
        else:
            self.cBCloseCadDoc.setChecked(self._setting.value("close_cad", type=bool))
        self.cBCloseCadDoc.clicked.connect(self._cBCloseCadDocClicked)
        self._toolbar = QToolBar(self)
        toolbar = self._toolbar
        toolbar.setAllowedAreas(Qt.ToolBarArea.TopToolBarArea)
        toolbar.setMovable(False)
        about_action = QAction("注意事项", self)
        about_action.triggered.connect(
            lambda: QMessageBox.information(
                self, "注意", "注意检查excel表格是否有电气科权限，wps是否安装了vba。"
            )
        )
        toolbar.addAction(about_action)
        self.addToolBar(toolbar)
        pass