config_mgr.py

#!/usr/bin/env python3

import json
from os import path

"""
Configuration Manager

Configuration is located in ./user_conf.json
It will include:
- Canvas configuration
- Wallpaper configuration
- All courses configuration
"""


class ConfigMGR:
    configuration = {}

    def __init__(self):
        if not path.exists("user_conf.json"):
            # Create this configuration file
            self.configuration = {
                "version": 1,
            }
            self.write_conf()
        else:
            self.force_read()
            if self.configuration["version"] != 1:
                raise Exception("Error: Configuration file version mismatch!")

    def write_conf(self):
        """
        Write configuration to the local file.
        """
        self.check_health()
        with open("./user_conf.json", "w", encoding="utf-8", errors="ignore") as f:
            json.dump(self.configuration, f, ensure_ascii=False, indent=4)

    def get_conf(self):
        return self.configuration

    def remove_key(self, key: str):
        self.configuration.pop(key)
        self.write_conf()

    def force_read(self):
        """
        Read configuration file.
        """
        with open("./user_conf.json", "r", encoding="utf-8", errors="ignore") as f:
            self.configuration = json.load(f)

    def check_health(self):
        if not self.configuration:
            raise Exception("No configuration found")

    def set_key_value(self, key, value):
        self.configuration[key] = value
        self.write_conf()

    def update_conf(self, conf):
        """
        Update the whole configuration
        """
        self.configuration = conf
        self.write_conf()

    def set_wallpaper_path(self, path):
        self.configuration["wallpaper_path"] = path