issue126-backup (#198)

reworked autosave, closes #126; update with restart

bin/evaluate.py

@@ -2,6 +2,7 @@
 
 import sys
 import pathlib
+import os
 sys.path.append(str(pathlib.Path(__file__).absolute().parent.parent / 'src'))
 
 from nmreval.configs import check_for_config
@@ -16,12 +17,45 @@ from nmreval.lib.logger import handle_exception
 sys.excepthook = handle_exception
 
 from gui_qt import App
+from gui_qt.Qt import QtCore
 
-app = App(['Team Rocket FTW!'])
+app = App(['NMReval'])
 
 from gui_qt.main.mainwindow import NMRMainWindow
+from gui_qt.lib.backup import BackupManager
+
+
+def do_autosave():
+    # autosave and update timestamp in db
+    success = mplQt.autosave()
+    if success:
+        backuping.update_last_save()
+
+# autosave stuff: keep track of instance and their backup files
+backuping = BackupManager()
+
+# look for autosaves in DB without running programs
+files = backuping.search_unsaved()
+
+# tell everyone what autosave files belongs to this process
+pid = os.getpid()
+bck_name = backuping.create_entry(pid)
+mplQt = NMRMainWindow(bck_file=bck_name)
+
+# one manual autosave to create the file
+do_autosave()
+
+# load all selected autosaves to program
+for f in files:
+    mplQt.management.load_files(f)
+    f.unlink()
+
+timer = QtCore.QTimer()
+timer.timeout.connect(do_autosave)
+timer.start(3 * 60 * 1000)
+
+app.aboutToQuit.connect(backuping.close)
 
-mplQt = NMRMainWindow()
 mplQt.show()
 
 sys.exit(app.exec())

src/gui_qt/_py/basewindow.py

@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file 'src/resources/_ui/basewindow.ui'
+# Form implementation generated from reading ui file 'resources/_ui/basewindow.ui'
 #
-# Created by: PyQt5 UI code generator 5.15.9
+# Created by: PyQt5 UI code generator 5.15.10
 #
 # WARNING: Any manual changes made to this file will be lost when pyuic5 is
 # run again.  Do not edit this file unless you know what you are doing.

src/gui_qt/lib/backup.py

@@ -0,0 +1,207 @@
+import os
+import sqlite3
+from datetime import datetime
+from pathlib import Path
+
+from nmreval.configs import config_paths
+from ..Qt import QtCore, QtWidgets
+
+DB_FILE = '/tmp/nmreval.db'
+
+
+class BackupManager(QtCore.QObject):
+    def __init__(self):
+        super().__init__()
+        self.create_table()
+        self._pid = None
+
+    def create_table(self):
+        con = sqlite3.connect(DB_FILE)
+        con.execute(
+            "CREATE TABLE IF NOT EXISTS sessions "
+            "(pid INTEGER NOT NULL, backup_file TEXT NOT NULL, last_save TEXT);"
+        )
+
+    def create_entry(self, pid: int):
+        backup_path = config_paths() / f'autosave_{datetime.now().strftime("%Y-%m-%d_%H%M%S")}_{pid}.nmr'
+
+        con = sqlite3.connect(DB_FILE)
+        con.execute('INSERT INTO sessions VALUES(?, ?, ?);',
+                    (pid, str(backup_path), None))
+        con.commit()
+        con.close()
+        self._pid = pid
+
+        return backup_path
+
+    def update_last_save(self):
+        con = sqlite3.connect(DB_FILE)
+        con.execute(
+            'UPDATE sessions SET last_save = ? WHERE pid = ?',
+            (datetime.now().strftime("%Y-%m-%d %H:%M:%S"), self._pid)
+        )
+        con.commit()
+        con.close()
+
+    def search_unsaved(self):
+        con = sqlite3.connect(DB_FILE)
+        cursor = con.cursor()
+        res = cursor.execute('SELECT sessions.* FROM sessions;')
+        con.commit()
+        data = res.fetchall()
+        con.close()
+
+        missing_processes = []
+
+        for pid, fname, save_date in data:
+            try:
+                os.kill(pid, 0)
+            except ProcessLookupError:
+                if Path(fname).exists():
+                    missing_processes.append((pid, fname, save_date))
+                else:
+                    # remove entries without valid file
+                    self.remove_row(pid)
+
+        if missing_processes:
+            msg = QLonelyBackupWindow()
+            msg.add_files(missing_processes)
+            msg.exec()
+            toberead = msg.recover
+
+            for pid in toberead[0]:
+                self.remove_file(pid)
+
+            for pid in toberead[1]:
+                self.remove_row(pid)
+
+            return list(toberead[1].values())
+
+        return []
+
+    def remove_row(self, pid):
+        con = sqlite3.connect(DB_FILE)
+        con.execute('DELETE FROM sessions WHERE pid = ?', (pid,))
+        con.commit()
+        con.close()
+
+    def remove_file(self, pid: int = None):
+        if pid is None:
+            pid = self._pid
+
+        con = sqlite3.connect(DB_FILE)
+        cursor = con.cursor()
+
+        # remove backup file
+        res = cursor.execute('SELECT sessions.backup_file FROM sessions WHERE pid = ?', (pid,))
+        con.commit()
+
+        fname = Path(res.fetchone()[0])
+        con.close()
+
+        fname.unlink(missing_ok=True)
+
+        # because autosave backups in a *.nmr.0 file and then moves it to *.nmr we look also for this one.
+        fname.with_suffix('.nmr.0').unlink(missing_ok=True)
+
+        # after removal of file also remove entry
+        self.remove_row(pid)
+
+    def delete_db_if_empty(self):
+        con = sqlite3.connect(DB_FILE)
+        cursor = con.cursor()
+        res = cursor.execute('SELECT COUNT(sessions.pid) FROM sessions GROUP BY sessions.pid;')
+        con.commit()
+
+        remaining_processes = res.fetchone()
+        con.close()
+        if remaining_processes is None:
+            Path(DB_FILE).unlink()
+
+    def close(self):
+        self.remove_file()
+        self.delete_db_if_empty()
+
+
+class QLonelyBackupWindow(QtWidgets.QDialog):
+    def __init__(self, parent=None):
+        super().__init__(parent=parent)
+        self.recover = [[], {}]    # list of pid to delete, dict of files to read {pid: file}
+
+        self.setWindowTitle('Adopt a file!')
+        self.resize(720, 320)
+
+        layout = QtWidgets.QVBoxLayout(self)
+        self.label = QtWidgets.QLabel(self)
+        self.label.setText('Abandoned backup file(s) looking for a loving home!\n'
+                           '(Files will all be loaded to same instance)')
+        layout.addWidget(self.label)
+
+        self.table = QtWidgets.QTableWidget(self)
+        self.table.setColumnCount(4)
+        self.table.setHorizontalHeaderLabels(['File name', 'Last saved', 'File size', 'Action'])
+        self.table.setGridStyle(QtCore.Qt.PenStyle.DashLine)
+        # self.table.horizontalHeader().setStretchLastSection(True)
+        self.table.verticalHeader().setVisible(False)
+        self.table.horizontalHeader().setSectionResizeMode(0, QtWidgets.QHeaderView.Stretch)
+        layout.addWidget(self.table)
+
+        self.buttons = QtWidgets.QDialogButtonBox(self)
+        self.buttons.setOrientation(QtCore.Qt.Orientation.Horizontal)
+        self.buttons.setStandardButtons(QtWidgets.QDialogButtonBox.Ok)
+        layout.addWidget(self.buttons)
+
+        self.buttons.accepted.connect(self.accept)
+
+    def add_files(self, entries):
+        self.table.setRowCount(len(entries))
+        for i, (pid, path, date) in enumerate(entries):
+            path = Path(path)
+            item1 = QtWidgets.QTableWidgetItem(path.name)
+            item1.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
+            item1.setData(QtCore.Qt.ItemDataRole.UserRole, pid)
+            item1.setData(QtCore.Qt.ItemDataRole.UserRole+1, path)
+            self.table.setItem(i, 0, item1)
+
+            item2 = QtWidgets.QTableWidgetItem(date)
+            item2.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
+            self.table.setItem(i, 1, item2)
+
+            size = path.stat().st_size
+            size_cnt = 0
+            while size > 1024:
+                # make file size human-readable
+                size /= 1024
+                size_cnt += 1
+                if size_cnt == 5:
+                    break
+
+            byte = ['bytes', 'kB', 'MiB', 'GiB', 'TiB', 'PiB'][size_cnt]
+
+            item3 = QtWidgets.QTableWidgetItem(f'{size:.2f} {byte}')
+            item3.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
+            self.table.setItem(i, 2, item3)
+
+            cw = QtWidgets.QComboBox(self)
+            cw.addItems(['Load', 'Delete', 'Keep for later'])
+            self.table.setCellWidget(i, 3, cw)
+
+        self.table.resizeColumnsToContents()
+
+    def accept(self):
+        for i in range(self.table.rowCount()):
+            decision = self.table.cellWidget(i, 3).currentIndex()
+            item = self.table.item(i, 0)
+            pid = item.data(QtCore.Qt.ItemDataRole.UserRole)
+            if decision == 0:
+                # load file
+                self.recover[1][pid] = item.data(QtCore.Qt.ItemDataRole.UserRole+1)
+            elif decision == 1:
+                # delete
+                self.recover[0].append(pid)
+            else:
+                # do nothing
+                pass
+
+        super().accept()
+

src/gui_qt/lib/logger.py

@@ -1,4 +1,3 @@
-import sys
 from pathlib import Path
 
 from .codeeditor import _make_textformats
@@ -6,12 +5,14 @@ from ..Qt import QtWidgets, QtCore, QtGui
 from nmreval.configs import config_paths
 
 
-STYLES = {'INFO': _make_textformats('black'),
-          'WARNING': _make_textformats('blue'),
-          'ERROR': _make_textformats('red', 'bold'),
-          'DEBUG': _make_textformats('black', 'italic'),
-          'file': _make_textformats('red', 'italic'),
-          'PyError': _make_textformats('red', 'bold-italic')}
+STYLES = {
+    'INFO': _make_textformats('black'),
+    'WARNING': _make_textformats('blue'),
+    'ERROR': _make_textformats('red', 'bold'),
+    'DEBUG': _make_textformats('black', 'italic'),
+    'file': _make_textformats('red', 'italic'),
+    'PyError': _make_textformats('red', 'bold-italic'),
+}
 
 
 class LogHighlighter(QtGui.QSyntaxHighlighter):

src/gui_qt/lib/update.py

@@ -0,0 +1,288 @@
+from __future__ import annotations
+
+import hashlib
+import os
+import subprocess
+import urllib.request
+from datetime import datetime
+
+from os import getenv, stat
+from os.path import exists
+from pathlib import Path
+from urllib.error import HTTPError
+
+from PyQt5 import QtWidgets, QtCore
+
+from nmreval.lib.logger import logger
+
+
+class UpdateDialog(QtWidgets.QDialog):
+    startDownload = QtCore.pyqtSignal(tuple)
+    restartSignal = QtCore.pyqtSignal()
+
+    def __init__(self, filename: str = None, parent=None):
+        super().__init__(parent=parent)
+        self._init_ui()
+
+        if filename is None:
+            filename = getenv('APPIMAGE')
+        self._appfile = filename
+
+        self.updater = Updater()
+
+        self.thread = QtCore.QThread(self)
+        self.thread.start()
+        self.helper = Downloader()
+        self.startDownload.connect(self.helper.run_download)
+        self.helper.progressChanged.connect(self.status.setText)
+        self.helper.finished.connect(self.finish_update)
+        self.helper.started.connect(self.status.show)
+        self.helper.moveToThread(self.thread)
+
+        self.look_for_updates(self._appfile)
+
+    def _init_ui(self):
+        self.setWindowTitle('Updates')
+
+        layout = QtWidgets.QVBoxLayout()
+
+        self.label = QtWidgets.QLabel()
+        layout.addWidget(self.label)
+
+        layout.addSpacing(10)
+
+        self.status = QtWidgets.QLabel()
+        self.status.hide()
+        layout.addWidget(self.status)
+        layout.addSpacing(10)
+
+        self.dialog_button = QtWidgets.QDialogButtonBox()
+        self.dialog_button.accepted.connect(self.update_appimage)
+        self.dialog_button.rejected.connect(self.close)
+        layout.addWidget(self.dialog_button)
+
+        self.setLayout(layout)
+
+    def look_for_updates(self, filename=None):
+        logger.info(f'Looking for updates, compare to file {filename}')
+        # Download zsync file of latest Appimage, look for SHA-1 hash and compare with hash of AppImage
+        is_updateble, m_time_file, m_time_zsync = self.updater.get_update_information(filename)
+
+        label_text = ''
+
+        if is_updateble is None:
+            label_text += '<p>Could not determine if this version is newer, please update manually (if necessary).</p>'
+            dialog_bttns = QtWidgets.QDialogButtonBox.Close
+        elif is_updateble:
+            label_text += '<p>Different version available. Press Ok to download this version, Cancel to ignore.</p>'
+            dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
+        else:
+            label_text += '<p>Version may be already up-to-date.</p>'
+            dialog_bttns = QtWidgets.QDialogButtonBox.Close
+
+        if m_time_zsync is None:
+            label_text += '<p>Creation date of remote version is unknown.</p>'
+        else:
+            label_text += f'<p>Date of most recent AppImage: {m_time_zsync.strftime("%d %B %Y %H:%M")}</p>'
+
+        if m_time_file is None:
+            label_text += 'No AppImage file found, press Ok to download latest version.'
+            dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Close
+        else:
+            label_text += f'<p>Date of used AppImage: {m_time_file.strftime("%d %B %Y %H:%M")}</p>'
+
+        self.label.setText(label_text)
+        self.dialog_button.setStandardButtons(dialog_bttns)
+
+    @QtCore.pyqtSlot()
+    def update_appimage(self):
+        if self._appfile is None:
+            args = (self.updater.zsync_url,)
+        else:
+            # this breaks the download for some reason
+            args = (self.updater.zsync_url, self._appfile)
+
+        self.dialog_button.setEnabled(False)
+
+        self.startDownload.emit(args)
+        self.status.show()
+
+    @QtCore.pyqtSlot(int, str)
+    def finish_update(self, retcode: int, file_loc: str):
+        restart = QRestartWindow(state=retcode, file_loc=file_loc, parent=self)
+        res = restart.exec()
+
+        self.close()
+
+        if res == QtWidgets.QMessageBox.Ok:
+            self.restartSignal.emit()
+
+    def closeEvent(self, evt):
+        self.thread.quit()
+        self.thread.wait()
+
+        super().closeEvent(evt)
+
+
+class QRestartWindow(QtWidgets.QMessageBox):
+    def __init__(self, state: int, file_loc: str, parent=None):
+        super().__init__(parent=parent)
+        self._appfile = file_loc
+
+        if state:
+            self.setText('Download failed')
+            self.setDetailedText(f'Status code of failure is {state}')
+            self.setStandardButtons(QtWidgets.QMessageBox.Close)
+            self.setIcon(QtWidgets.QMessageBox.Warning)
+        else:
+            self.setText('Download completed!')
+            self.setInformativeText("Press Restart to use new AppImage")
+            self.setDetailedText(f'Location of AppImage: {file_loc}')
+
+            self.setIcon(QtWidgets.QMessageBox.Information)
+
+            self.setStandardButtons(QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Close)
+            restart_button = self.button(QtWidgets.QMessageBox.Ok)
+            restart_button.setText('Restart')
+
+        self.buttonClicked.connect(self.maybe_close)
+
+    def maybe_close(self):
+        if self.clickedButton() == self.button(QtWidgets.QMessageBox.Ok):
+            app = QtWidgets.QApplication.instance()
+            app.quit()
+            subprocess.Popen(self._appfile)
+
+
+class Downloader(QtCore.QObject):
+    started = QtCore.pyqtSignal()
+    finished = QtCore.pyqtSignal(int, str)
+    progressChanged = QtCore.pyqtSignal(str)
+
+    @QtCore.pyqtSlot(tuple)
+    def run_download(self, args: tuple[str]):
+        status = 0
+        appimage_location = args[0][:-6]
+        logger.info(f'Download {appimage_location}')
+        if len(args) == 2:
+            new_file = Path(args[1])
+        else:
+            new_file = Path.home() / 'Downloads' / 'NMReval-latest-x86_64.AppImage'
+
+        if new_file.exists():
+            os.rename(new_file, new_file.with_suffix('.AppImage.old'))
+
+        try:
+            with urllib.request.urlopen(appimage_location) as response:
+                with new_file.open('wb') as f:
+                    f.write(response.read())
+
+            new_file.chmod(0o755)
+        except HTTPError as e:
+            logger.exception(f'Download failed with {e}')
+            status = 3
+        except Exception as e:
+            logger.exception(f'Download failed with {e.args}')
+            status = 1
+
+        if status != 0:
+            logger.warning('Download failed, restore previous AppImage')
+            try:
+                os.rename(new_file.with_suffix('.AppImage.old'), new_file)
+            except FileNotFoundError:
+                pass
+        # zsync does not support https
+
+        self.finished.emit(status, str(new_file))
+
+
+class Updater:
+    host = 'gitea.pkm.physik.tu-darmstadt.de/api/packages/IPKM/generic/NMReval/latest/'
+    version = 'NMReval-latest-x86_64'
+
+    @property
+    def zsync_url(self):
+        return f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
+
+    @staticmethod
+    def get_zsync():
+        url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
+        m_time_zsync = None
+        checksum_zsync = None
+        zsync_file = None
+        filename = None
+        try:
+            with urllib.request.urlopen(url_zsync) as response:
+                zsync_file = response.read()
+        except HTTPError as e:
+            logger.error(f'Request for zsync returned code {e}')
+        except Exception as e:
+            logger.exception(f'Download of zsync failed with exception {e.args}')
+
+        if zsync_file is not None:
+            for line in zsync_file.split(b'\n'):
+                try:
+                    kw, val = line.split(b': ')
+                    time_string = str(val, encoding='utf-8')
+                    time_format = '%a, %d %b %Y %H:%M:%S %z'
+                    if kw == b'MTime':
+                        try:
+                            m_time_zsync = datetime.strptime(time_string, time_format).astimezone(None)
+                        except ValueError:
+                            logger.warning(f'zsync time "{time_string}" does not match "{time_format}"')
+                    elif kw == b'SHA-1':
+                        checksum_zsync = str(val, encoding='utf-8')
+                    elif kw == b'Filename':
+                        filename = str(val, encoding='utf-8')
+
+                except ValueError:
+                    # stop when empty line is reached
+                    break
+
+        return m_time_zsync, checksum_zsync, filename
+
+    @staticmethod
+    def get_appimage_info(filename: str):
+        if filename is None:
+            return None, None
+
+        if not exists(filename):
+            return None, None
+
+        stat_mtime = stat(filename).st_mtime
+        m_time_file = datetime.fromtimestamp(stat_mtime).replace(microsecond=0)
+        with open(filename, 'rb') as f:
+            checksum_file = hashlib.sha1(f.read()).hexdigest()
+            if checksum_file is None:
+                logger.warning('No checksum for AppImage calculated')
+
+        return m_time_file, checksum_file
+
+    @staticmethod
+    def get_update_information(filename: str) -> tuple[(bool | None), datetime, datetime]:
+        m_time_zsync, checksum_zsync, appname = Updater.get_zsync()
+        m_time_file, checksum_file = Updater.get_appimage_info(filename)
+
+        logger.debug(f'zsync information {m_time_zsync}, {checksum_zsync}, {appname}')
+        logger.debug(f'file information {m_time_file}, {checksum_file}')
+
+        if not ((checksum_file is not None) and (checksum_zsync is not None)):
+            return None, m_time_file, m_time_zsync
+        else:
+            return checksum_file != checksum_zsync, m_time_file, m_time_zsync
+
+
+if __name__ == '__main__':
+    import sys
+    from gui_qt import App
+
+    app = App(['Team Rocket FTW!'])
+
+    updater = UpdateDialog()
+    updater.show()
+
+    sys.exit(app.exec())
+
+
+
+

src/gui_qt/lib/utils.py

@@ -1,20 +1,9 @@
 from __future__ import annotations
 
-import os
-import urllib.request
-from os import getenv, stat
-from os.path import exists
-import hashlib
-import subprocess
-from datetime import datetime
 from contextlib import contextmanager
-from pathlib import Path
-from urllib.error import HTTPError
 from numpy import linspace
 from scipy.interpolate import interp1d
 
-from nmreval.lib.logger import logger
-
 from ..Qt import QtGui, QtWidgets, QtCore
 
 
@@ -63,225 +52,3 @@ class RdBuCMap:
         return col
 
 
-class UpdateDialog(QtWidgets.QDialog):
-    startDownload = QtCore.pyqtSignal(tuple)
-
-    def __init__(self, filename: str = None, parent=None):
-        super().__init__(parent=parent)
-        self._init_ui()
-
-        if filename is None:
-            filename = getenv('APPIMAGE')
-        self._appfile = filename
-
-        self.updater = Updater()
-
-        self.thread = QtCore.QThread(self)
-        self.thread.start()
-        self.helper = Downloader()
-        self.startDownload.connect(self.helper.run_download)
-        self.helper.progressChanged.connect(self.status.setText)
-        self.helper.finished.connect(self.finish_update)
-        self.helper.started.connect(self.status.show)
-        self.helper.moveToThread(self.thread)
-
-        self.look_for_updates(self._appfile)
-
-    def _init_ui(self):
-        self.setWindowTitle('Updates')
-
-        layout = QtWidgets.QVBoxLayout()
-
-        self.label = QtWidgets.QLabel()
-        layout.addWidget(self.label)
-
-        layout.addSpacing(10)
-
-        self.status = QtWidgets.QLabel()
-        self.status.hide()
-        layout.addWidget(self.status)
-        layout.addSpacing(10)
-
-        self.dialog_button = QtWidgets.QDialogButtonBox()
-        self.dialog_button.accepted.connect(self.update_appimage)
-        self.dialog_button.rejected.connect(self.close)
-        layout.addWidget(self.dialog_button)
-
-        self.setLayout(layout)
-
-    def look_for_updates(self, filename=None):
-        logger.info(f'Looking for updates, compare to file {filename}')
-        # Download zsync file of latest Appimage, look for SHA-1 hash and compare with hash of AppImage
-        is_updateble, m_time_file, m_time_zsync = self.updater.get_update_information(filename)
-
-        label_text = ''
-
-        if is_updateble is None:
-            label_text += '<p>Could not determine if this version is newer, please update manually (if necessary).</p>'
-            dialog_bttns = QtWidgets.QDialogButtonBox.Close
-        elif is_updateble:
-            label_text += '<p>Newer version available. Press Ok to download new version, Cancel to ignore.</p>'
-            dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
-        else:
-            label_text += '<p>Version may be already up-to-date.</p>'
-            dialog_bttns = QtWidgets.QDialogButtonBox.Close
-
-        if m_time_zsync is None:
-            label_text += '<p>Creation date of remote version is unknown.</p>'
-        else:
-            label_text += f'<p>Date of most recent AppImage: {m_time_zsync.strftime("%d %B %Y %H:%M")}</p>'
-
-        if m_time_file is None:
-            label_text += 'No AppImage file found, press Ok to download latest version.'
-            dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Close
-        else:
-            label_text += f'<p>Date of used AppImage: {m_time_file.strftime("%d %B %Y %H:%M")}</p>'
-
-        self.label.setText(label_text)
-        self.dialog_button.setStandardButtons(dialog_bttns)
-
-    @QtCore.pyqtSlot()
-    def update_appimage(self):
-        if self._appfile is None:
-            args = (self.updater.zsync_url,)
-        else:
-            # this breaks the download for some reason
-            args = (self.updater.zsync_url, self._appfile)
-
-        self.dialog_button.setEnabled(False)
-
-        self.startDownload.emit(args)
-        self.status.show()
-
-    @QtCore.pyqtSlot(int, str)
-    def finish_update(self, retcode: int, file_loc: str):
-        if retcode == 0:
-            self.status.setText(f'Download complete.New AppImage lies in <p><em>{file_loc}</em>.</p>')
-        else:
-            self.status.setText(f'Download failed :( with return code {retcode}.')
-        self.dialog_button.setStandardButtons(QtWidgets.QDialogButtonBox.Close)
-        self.dialog_button.setEnabled(True)
-
-    def closeEvent(self, evt):
-        self.thread.quit()
-        self.thread.wait()
-
-        super().closeEvent(evt)
-
-
-class Downloader(QtCore.QObject):
-    started = QtCore.pyqtSignal()
-    finished = QtCore.pyqtSignal(int, str)
-    progressChanged = QtCore.pyqtSignal(str)
-
-    @QtCore.pyqtSlot(tuple)
-    def run_download(self, args: tuple[str]):
-        status = 0
-        appimage_location = args[0][:-6]
-        logger.info(f'Download {appimage_location}')
-        if len(args) == 2:
-            new_file = Path(args[1])
-        else:
-            new_file = Path.home() / 'Downloads' / 'NMReval-latest-x86_64.AppImage'
-
-        if new_file.exists():
-            os.rename(new_file, new_file.with_suffix('.AppImage.old'))
-
-        try:
-            with urllib.request.urlopen(appimage_location) as response:
-                with new_file.open('wb') as f:
-                    f.write(response.read())
-
-            new_file.chmod(0o755)
-        except HTTPError as e:
-            logger.exception(f'Download failed with {e}')
-            status = 3
-        except Exception as e:
-            logger.exception(f'Download failed with {e.args}')
-            status = 1
-
-        if status != 0:
-            logger.warning('Download failed, restore previous AppImage')
-            try:
-                os.rename(new_file.with_suffix('.AppImage.old'), new_file)
-            except FileNotFoundError:
-                pass
-        # zsync does not support https
-
-        self.finished.emit(status, str(new_file))
-
-
-class Updater:
-    host = 'gitea.pkm.physik.tu-darmstadt.de/api/packages/IPKM/generic/NMReval/latest/'
-    version = 'NMReval-latest-x86_64'
-
-    @property
-    def zsync_url(self):
-        return f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
-
-    @staticmethod
-    def get_zsync():
-        url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
-        m_time_zsync = None
-        checksum_zsync = None
-        zsync_file = None
-        filename = None
-        try:
-            with urllib.request.urlopen(url_zsync) as response:
-                zsync_file = response.read()
-        except HTTPError as e:
-            logger.error(f'Request for zsync returned code {e}')
-        except Exception as e:
-            logger.exception(f'Download of zsync failed with exception {e.args}')
-
-        if zsync_file is not None:
-            for line in zsync_file.split(b'\n'):
-                try:
-                    kw, val = line.split(b': ')
-                    time_string = str(val, encoding='utf-8')
-                    time_format = '%a, %d %b %Y %H:%M:%S %z'
-                    if kw == b'MTime':
-                        try:
-                            m_time_zsync = datetime.strptime(time_string, time_format).astimezone(None)
-                        except ValueError:
-                            logger.warning(f'zsync time "{time_string}" does not match "{time_format}"')
-                    elif kw == b'SHA-1':
-                        checksum_zsync = str(val, encoding='utf-8')
-                    elif kw == b'Filename':
-                        filename = str(val, encoding='utf-8')
-
-                except ValueError:
-                    # stop when empty line is reached
-                    break
-
-        return m_time_zsync, checksum_zsync, filename
-
-    @staticmethod
-    def get_appimage_info(filename: str):
-        if filename is None:
-            return None, None
-
-        if not exists(filename):
-            return None, None
-
-        stat_mtime = stat(filename).st_mtime
-        m_time_file = datetime.fromtimestamp(stat_mtime).replace(microsecond=0)
-        with open(filename, 'rb') as f:
-            checksum_file = hashlib.sha1(f.read()).hexdigest()
-            if checksum_file is None:
-                logger.warning('No checksum for AppImage calculated')
-
-        return m_time_file, checksum_file
-
-    @staticmethod
-    def get_update_information(filename: str) -> tuple[(bool | None), datetime, datetime]:
-        m_time_zsync, checksum_zsync, appname = Updater.get_zsync()
-        m_time_file, checksum_file = Updater.get_appimage_info(filename)
-
-        logger.debug(f'zsync information {m_time_zsync}, {checksum_zsync}, {appname}')
-        logger.debug(f'file information {m_time_file}, {checksum_file}')
-
-        if not ((checksum_file is not None) and (checksum_zsync is not None)):
-            return None, m_time_file, m_time_zsync
-        else:
-            return checksum_file != checksum_zsync, m_time_file, m_time_zsync

src/gui_qt/main/mainwindow.py

@@ -1,8 +1,8 @@
 from __future__ import annotations
 
-import datetime
 import os
 import re
+import time
 from pathlib import Path
 
 from numpy import geomspace, linspace
@@ -33,7 +33,7 @@ from ..math.smooth import QSmooth
 from ..nmr.coupling_calc import QCoupCalcDialog
 from ..nmr.t1_from_tau import QRelaxCalc
 from .._py.basewindow import Ui_BaseWindow
-from ..lib.utils import UpdateDialog, Updater
+from ..lib.update import UpdateDialog
 
 
 class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
@@ -42,7 +42,7 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
     save_ses_sig = QtCore.pyqtSignal(str)
     rest_ses_sig = QtCore.pyqtSignal(str)
 
-    def __init__(self, parents=None, path=None):
+    def __init__(self, parents=None, path=None, bck_file=None):
         super().__init__(parent=parents)
 
         if path is None:
@@ -75,21 +75,16 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self._init_gui()
         self._init_signals()
 
-        if os.getenv('APPIMAGE') is not None:
-            if Updater.get_update_information(os.getenv('APPIMAGE'))[0]:
-                self.look_for_update()
-
-        self.check_for_backup()
-
-        self.__timer = QtCore.QTimer()
-        self.__backup_path = config_paths() / f'{datetime.datetime.now().strftime("%Y-%m-%d_%H%M%S")}.nmr'
-        self.__timer.start(3*60*1000)  # every three minutes
-        self.__timer.timeout.connect(self._autosave)
-
         self.fit_timer = QtCore.QTimer()
         self.fit_timer.setInterval(500)
         self.fit_timer.timeout.connect(
-            lambda: self.status.setText(f'Fit running... ({self.management.fitter.step} evaluations)'))
+            lambda: self.status.setText(f'Fit running... ({self.management.fitter.step} evaluations)')
+        )
+
+        self.__backup_path = pathlib.Path(bck_file)
+        if os.getenv('APPIMAGE'):
+            # ignore AppImages if not running from AppImage
+            self.look_for_update()
 
     def _init_gui(self):
         self.setupUi(self)
@@ -108,8 +103,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.fitlim_button.setIcon(get_icon('fit_region'))
         self.toolBar_fit.addWidget(self.fitlim_button)
 
-        # self.area.dragEnterEvent = self.dragEnterEvent
-
         while self.tabWidget.count() > 2:
             self.tabWidget.removeTab(self.tabWidget.count()-1)
 
@@ -130,12 +123,15 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.fitregion = RegionItem()
         self._fit_plot_id = None
 
-        self.setGeometry(QtWidgets.QStyle.alignedRect(QtCore.Qt.LeftToRight, QtCore.Qt.AlignCenter,
-                                                      self.size(), QtWidgets.qApp.desktop().availableGeometry()))
+        self.setGeometry(QtWidgets.QStyle.alignedRect(
+            QtCore.Qt.LayoutDirection.LeftToRight,
+            QtCore.Qt.AlignmentFlag.AlignCenter,
+            self.size(),
+            QtWidgets.qApp.desktop().availableGeometry()),
+        )
 
         self.datawidget.management = self.management
         self.integralwidget.management = self.management
-        # self.drawingswidget.graphs = self.management.graphs
 
         self.ac_group = QtWidgets.QActionGroup(self)
         self.ac_group.addAction(self.action_lm_fit)
@@ -161,6 +157,7 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.menuData.insertAction(self.actionRedo, self.actionUndo)
 
         self.action_save_fit_parameter.triggered.connect(self.save_fit_parameter)
+        # noinspection PyUnresolvedReferences
         self.ac_group2.triggered.connect(self.change_fit_limits)
 
         self.t1action.triggered.connect(lambda: self._show_tab('t1_temp'))
@@ -235,8 +232,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.actionNext_window.triggered.connect(lambda: self.area.activateNextSubWindow())
         self.actionPrevious.triggered.connect(lambda: self.area.activatePreviousSubWindow())
 
-        self.closeSignal.connect(self.close)
-
         self.action_norm_max.triggered.connect(lambda: self.management.apply('norm', ('max',)))
         self.action_norm_max_abs.triggered.connect(lambda: self.management.apply('norm', ('maxabs',)))
         self.action_norm_first.triggered.connect(lambda: self.management.apply('norm', ('first',)))
@@ -864,10 +859,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
     def item_from_graph(self, item, graph_id):
         self.management.graphs[graph_id].remove_external(item)
 
-    def closeEvent(self, evt):
-        # self._write_settings()
-        self.close()
-
     @QtCore.pyqtSlot(int)
     def request_data(self, idx):
         idd = self.datawidget.get_indexes(idx=idx-1)
@@ -995,7 +986,7 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
 
             self.editor = QUsermodelEditor(config_paths() / 'usermodels.py', parent=self)
             self.editor.modelsChanged.connect(lambda: self.fit_dialog.read_and_load_functions())
-            self.editor.setWindowModality(QtCore.Qt.ApplicationModal)
+            self.editor.setWindowModality(QtCore.Qt.WindowModality.ApplicationModal)
         self.editor.show()
 
     @QtCore.pyqtSlot(list)
@@ -1029,9 +1020,10 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
     @staticmethod
     @QtCore.pyqtSlot(name='on_actionDocumentation_triggered')
     def open_doc():
-        docpath = '/autohome/dominik/auswerteprogramm3/doc/_build/html/index.html'
-        import webbrowser
-        webbrowser.open(docpath)
+        pass
+        # docpath = '/autohome/dominik/auswerteprogramm3/doc/_build/html/index.html'
+        # import webbrowser
+        # webbrowser.open(docpath)
 
     def dropEvent(self, evt):
         if evt.mimeData().hasUrls():
@@ -1060,13 +1052,13 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         if self.sender() == self.actionLife:
             from ..lib.gol import QGameOfLife
             game = QGameOfLife(parent=self)
-            game.setWindowModality(QtCore.Qt.NonModal)
+            game.setWindowModality(QtCore.Qt.WindowModality.NonModal)
             game.show()
 
         elif self.sender() == self.actionMine:
             from ..lib.stuff import QMines
             game = QMines(parent=self)
-            game.setWindowModality(QtCore.Qt.NonModal)
+            game.setWindowModality(QtCore.Qt.WindowModality.NonModal)
             game.show()
 
         else:
@@ -1094,9 +1086,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
     def close(self):
         write_state({'History': {'recent path': str(self.path)}})
 
-        # remove backup file when closing
-        self.__backup_path.unlink(missing_ok=True)
-
         super().close()
 
     def read_state(self):
@@ -1120,40 +1109,16 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
 
         QLog(parent=self).show()
 
-    def _autosave(self):
-        # TODO better separate thread may it takes some time to save
+    def autosave(self) -> bool:
         self.status.setText('Autosave...')
         success = NMRWriter(self.management.graphs, self.management.data).export(self.__backup_path.with_suffix('.nmr.0'))
+
         if success:
             self.__backup_path.with_suffix('.nmr.0').rename(self.__backup_path)
 
         self.status.setText('')
 
-    def check_for_backup(self):
-        backups = []
-        for filename in config_paths().glob('*.nmr'):
-            try:
-                backups.append((filename, datetime.datetime.strptime(filename.stem, "%Y-%m-%d_%H%M%S")))
-            except ValueError:
-                continue
-
-        if backups:
-            backup_by_date = sorted(backups, key=lambda x: x[1])
-            msg = QtWidgets.QMessageBox.information(
-                self, 'Backup found',
-                f'{len(backups)} backup files in directory {backup_by_date[-1][0].parent} found.\n\n'
-                f'Latest backup date: {backup_by_date[-1][1]}\n\n'
-                f'Press Ok to load, Cancel to delete backup, Close to do nothing.',
-                QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Cancel | QtWidgets.QMessageBox.Close
-            )
-
-            if msg == QtWidgets.QMessageBox.Ok:
-                self.management.load_files([str(backup_by_date[-1][0])])
-                backup_by_date[-1][0].unlink()
-            elif msg == QtWidgets.QMessageBox.Cancel:
-                backup_by_date[-1][0].unlink()
-            else:
-                pass
+        return success
 
     @QtCore.pyqtSlot(name='on_actionCreate_starter_triggered')
     def create_starter(self):