Add configuration management and improve argument validation logic

- Introduced `DirectoryManager` to handle configuration directory creation.
- Added `ConfigManager` with singleton design to manage config reading.
- Expanded argument validation in `Application` to refine error checks.
- Updated dependencies to include `rich`, `tomli`, and `tomli_w`.
- Adjusted setup logic to prompt users about missing configurations.

pyproject.toml

@@ -17,6 +17,10 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dependencies = [
+    "tomli",
+    "tomli_w",
+    "rich"
+
 
 ]
 

src/metar_navigate/application.py

@@ -1,18 +1,26 @@
 import argparse
 import sys
+import rich
 
+from metar_navigate.utils import ConfigManager
 
 class Application:
     def __init__(self):
         self.parser = None
         self.args = None
+        self.config = ConfigManager()
+
 
     def setup(self):
         self._validate_args()
 
+        if self.config.read_config() is None:
+            rich.print("[bold red]No config file found. Please run metarNavigate --configure[/bold red] ")
+
     def _validate_args(self):
         self.parser = argparse.ArgumentParser()
         self.parser.add_argument("--no-tui", action="store_true", help="disables the TUI")
+        self.parser.add_argument("--configure", "-c" ,action="store_true", help="runs the configuration wizard")
         self.parser.add_argument("--detailed", action="store_true", help="displays more detailed METAR Breakdown "
                                                                     "(Only available with --no-tui flag)")
         self.parser.add_argument("-t", "--type", choices=["TAF", "METAR"], default="METAR", help="Select the Type "
@@ -22,14 +30,36 @@ class Application:
 
         self.args = self.parser.parse_args()
 
-        if self.args.no_tui and not self.args.ICAO:
+
-            self.parser.error("--no-tui requires an ICAO code")
+
+
+        if self.args.configure and self.args.ICAO:
+            self.parser.error("--configure não aceita código ICAO")
+
+
+        if self.args.configure and self.args.detailed:
+            self.parser.error("--configure não pode ser usado com --detailed")
+
+
+        if self.args.configure and ('--type' in sys.argv or '-t' in sys.argv):
+            self.parser.error("--configure não pode ser usado com --type/-t")
+
+
+        if self.args.no_tui and not self.args.configure and not self.args.ICAO:
+            self.parser.error("--no-tui requer código ICAO (exceto quando usado com --configure)")
+
+
         if self.args.ICAO and not self.args.no_tui:
-            self.parser.error("ICAO code only required with --no-tui flag")
+            self.parser.error("Código ICAO só pode ser usado com --no-tui")
-        if not self.args.no_tui and self.args.detailed:
+
-            self.parser.error("--detailed flag only available with --no-tui flag")
+
+        if self.args.detailed and not self.args.no_tui:
+            self.parser.error("--detailed requer --no-tui")
+
+
         if not self.args.no_tui and ('--type' in sys.argv or '-t' in sys.argv):
-            self.parser.error("--type  or -t flag only available with --no-tui flag")
+            self.parser.error("--type/-t requer --no-tui")
+
 
     def run(self):
         pass

src/metar_navigate/utils/__init__.py

@@ -0,0 +1,4 @@
+from .directory_manager import DirectoryManager
+from .config_manager import ConfigManager
+
+__all__ = ["DirectoryManager", "ConfigManager"]

src/metar_navigate/utils/config_manager.py

@@ -0,0 +1,41 @@
+import os.path
+
+import tomli
+
+from metar_navigate.utils import DirectoryManager
+
+from threading import Lock
+
+class SingletonMeta(type):
+    _instances = {}
+    _lock: Lock = Lock()
+
+    def __call__(cls, *args, **kwargs):
+        with cls._lock:
+            if cls not in cls._instances:
+                instance = super().__call__(*args, **kwargs)
+                cls._instances[cls] = instance
+        return cls._instances[cls]
+
+
+class ConfigManager(metaclass=SingletonMeta):
+    def __init__(self):
+        self.config_dir = DirectoryManager.get_config_directory()
+        self.__data = None
+
+    def read_config(self):
+        if os.path.exists(f"{self.config_dir}/config.toml"):
+            try:
+                with open(f"{self.config_dir}/config.toml", "rb") as f:
+                    data = tomli.load(f)
+            except tomli.TOMLDecodeError as e:
+                raise ValueError(f"Invalid TOML file; {e}")
+            except Exception as e:
+                raise ValueError(f"Error reading config file; {e}")
+
+            self.__data = data
+            return self.__data
+
+        else:
+            return None
+

src/metar_navigate/utils/directory_manager.py

@@ -0,0 +1,16 @@
+import os
+from pathlib import Path
+
+
+class DirectoryManager:
+
+    @staticmethod
+    def get_config_directory()-> Path:
+        home = Path.home()
+        config_dir = home / ".METARNavigate"
+        config_dir.mkdir(exist_ok=True)
+        os.chmod(config_dir,0o644)
+        return config_dir
+
+
+