Feature/initial (#1)

* initial commit
* systemd service implementation

NASAMessage.py

@@ -0,0 +1,61 @@
+
+class NASAMessage:
+    """
+    A class to represent a NASA message.
+    Attributes
+    ----------
+    packet_message : int
+        The message packet identifier.
+    packet_message_type : int
+        The type of the message packet.
+    packet_payload : bytes
+        The payload of the message packet in bytes.
+    Methods
+    -------
+    __str__():
+        Returns a string representation of the NASAMessage instance.
+    __repr__():
+        Returns a string representation of the NASAMessage instance.
+    """
+    def __init__(self, packet_message=0x000, packet_message_type=0, packet_payload=[0]):
+        """
+        Constructs all the necessary attributes for the NASAMessage object.
+        Parameters
+        ----------
+        packet_message : int, optional
+            The message packet identifier (default is 0x000).
+        packet_message_type : int, optional
+            The type of the message packet (default is 0).
+        packet_payload : list, optional
+            The payload of the message packet as a list of integers (default is [0]).
+        """
+        """
+        Returns a string representation of the NASAMessage instance.
+        Returns
+        -------
+        str
+            A string representation of the NASAMessage instance.
+        """
+        """
+        Returns a string representation of the NASAMessage instance.
+        Returns
+        -------
+        str
+            A string representation of the NASAMessage instance.
+        """
+        
+        self.packet_message: int = packet_message
+        self.packet_message_type: int = packet_message_type
+        self.packet_payload: bytes = bytes([int(hex(x), 16) for x in packet_payload])
+
+    def __str__(self):
+        return (
+            f"NASAMessage(\n"
+            f"    packet_message={self.packet_message} ({hex(self.packet_message)}),\n"
+            f"    packet_message_type={self.packet_message_type} ({hex(self.packet_message_type)}),\n"
+            f"    packet_payload={self.packet_payload} ({self.packet_payload.hex()})\n"
+            f")"
+        )
+    
+    def __repr__(self):
+        return self.__str__()