model.py

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"""!
********************************************************************************
@file   model.py
@brief  Application data storage model
********************************************************************************
"""
 
import os
import logging
from typing import Optional, TYPE_CHECKING
 
from Source.version import __title__
from Source.Util.app_log import LogConfig
from Source.Util.app_data import S_DEFAULT_OUTPUT_PATH, write_output_path_settings, read_last_dir, write_last_dir, \
    read_show_price_settings, write_show_price_settings, read_print_report_settings, write_print_report_settings, \
    read_output_path_settings
from Source.Util.gui_toolkit import connect_signal
 
from Source.Model import config
from Source.Model import report
from Source.Model.authentication import Authentication
from Source.Model import sound
from Source.Model.calculator import Calculator
from Source.Model import monitor
from Source.Model import language
from Source.Worker.open_notepad import OpenNotepadWorker  # pylint: disable=wrong-import-position
from Source.Worker import printer  # pylint: disable=wrong-import-position
if TYPE_CHECKING:
    from Source.Controller.main_window import MainWindow
 
log = logging.getLogger(__title__)
 
S_WRITE_TEST_FILE_NAME = "_write_test.txt"
 
 
class Model:
    """!
    @brief Holds the data of the application
    @param ui : main window object
    @param log_config : log configuration of the application
    """
 
    def __init__(self, ui: "MainWindow", log_config: LogConfig) -> None:
        self.ui = ui
        self.ui.model = self  # set model before function return to get language for status messages before
        self.log_config = log_config
        self.s_output_path: str = read_output_path_settings()
        self.b_enable_report = read_print_report_settings()
        self.b_show_price: bool = read_show_price_settings()
        self.s_last_path: str | None = read_last_dir()
        self.c_auth: Authentication = Authentication(ui)
        self.c_calc: Calculator = Calculator()
        self.c_config: config.Config = config.Config(ui)  # init before printer and report
        self.c_report: report.Report = report.Report(ui)
        self.c_sound: sound.Sound = sound.Sound(ui)
        self.c_monitor: monitor.MonitorScale = monitor.MonitorScale(ui)
        self.c_language: language.Language = language.Language(ui)
        self.update_output_path(self.s_output_path)  # update after set language. call to create output if not exist
        self.notepad_worker = OpenNotepadWorker()
 
        # printer
        self.c_printer: printer.Printer = printer.Printer(ui)
        self.c_printer.set_header(self.c_config.get_header1(),
                                  self.c_config.get_header2())
        self.c_printer.start()  # start printer thread
 
    def update_enable_report_status(self, b_enable_report: Optional[bool] = None) -> None:
        """!
        @brief Update report enable status.
        @param b_enable_report : [True] enable print report; [False] disable print report; [None] toggle print report
        """
        if b_enable_report is None:
            b_enable_report = not self.b_show_price
        self.b_enable_report = b_enable_report
        write_print_report_settings(self.b_show_price)
        if self.b_enable_report:
            s_statusbar_text = ["Enable Print Report", "Druckbericht aktiviert"]
        else:
            s_statusbar_text = ["Disable Print Report", "Druckbericht deaktiviert"]
        self.ui.set_status(s_statusbar_text)
        self.ui.update_screen()
 
    def update_show_price_status(self, b_show_price: Optional[bool] = None) -> None:
        """!
        @brief Update Show price status.
        @param b_show_price : [True] show price below article name; [False] show not; [None] toggle actual setting
        """
        if b_show_price is None:
            b_show_price = not self.b_show_price
        self.b_show_price = b_show_price
        write_show_price_settings(self.b_show_price)
        if self.b_show_price:
            s_statusbar_text = ["Show Price", "Preis anzeigen"]
        else:
            s_statusbar_text = ["Hide Price", "Preis verbergen"]
        self.ui.set_status(s_statusbar_text)
        self.ui.update_screen()
 
    def update_output_path(self, s_output_path: str) -> None:
        """!
        @brief Update output path
        @param s_output_path : new output path to set
        """
        if not os.path.exists(s_output_path):
            self.ui.set_status([f"Path not exist: {s_output_path}",
                                f"Pfad existiert nicht: {s_output_path}"], True)
            if not os.path.exists(S_DEFAULT_OUTPUT_PATH):
                log.debug("Create default output folder")
                os.mkdir(S_DEFAULT_OUTPUT_PATH)
            s_output_path = S_DEFAULT_OUTPUT_PATH
 
        try:  # test write access
            s_test_file = s_output_path + "/" + S_WRITE_TEST_FILE_NAME
            with open(s_test_file, mode="w", encoding="utf-8") as file:
                file.write("Write Access Test")
            os.remove(s_test_file)
        except BaseException:
            b_access = False
        else:
            b_access = True
 
        if b_access:
            self.s_output_path = s_output_path
            write_output_path_settings(self.s_output_path)
            self.ui.set_status([f"Output path changed to: {s_output_path}",
                                f"Ausgangsverzeichnis geändert zu: {s_output_path}"])
        else:
            self.ui.set_status([f"No Write access to path: {s_output_path}",
                                f"Kein Schreibzugriff auf das Verzeichnis: {s_output_path}"], True)
 
    def get_last_path(self) -> str | None:
        """!
        @brief Get last path to open dialog
        @return last path
        """
        path = self.s_output_path
        if self.s_last_path:
            if os.path.exists(self.s_last_path):
                path = self.s_last_path
            else:
                self.s_last_path = None
        return path
 
    def set_last_path(self, path: str) -> None:
        """!
        @brief Set last path and save in persistent storage
        @param path : path to set as last path
        """
        self.s_last_path = path
        write_last_dir(path)