add seconds from now offset time prompt

eive_tmtc/tmtc/tm_store.py

@@ -49,7 +49,10 @@ def pack_tm_store_commands(p: ServiceProviderParams):
         app_data.extend(struct.pack("!I", end_stamp))
         q.add_log_cmd(Info.DELETE_UP_TO)
         q.add_log_cmd(f"Selected Store: {obj_id}")
-        q.add_log_cmd(f"Deletion up to time {delete_up_to_time}")
+        q.add_log_cmd(
+            f"Deletion up to time "
+            f"{datetime.datetime.fromtimestamp(end_stamp, tz=datetime.timezone.utc)}"
+        )
         print(
             PusTelecommand(
                 service=15, subservice=Subservice.DELETE_UP_TO, app_data=app_data
@@ -80,16 +83,53 @@ STORE_DICT = {
 }
 
 
+TIME_INPUT_DICT = {
+    1: "Full manual input with dateutil.parser.parse",
+    2: "Offset from now in seconds",
+}
+
+
 def time_prompt() -> datetime.datetime:
+    print("Available time input types: ")
+    for k, v in TIME_INPUT_DICT.items():
+        print(f"  {k}: {v}")
+    while True:
+        time_input_key = int(input("Please specify a time input type by key: "))
+        if time_input_key not in TIME_INPUT_DICT.keys():
+            _LOGGER.warning("Invalid key, try again")
+            continue
+        break
+    if time_input_key == 1:
+        return time_prompt_fully_manually()
+    elif time_input_key == 2:
+        return time_prompt_offset_from_now()
+
+
+def time_prompt_fully_manually() -> datetime.datetime:
     # TODO: Add support for offset from now in seconds
-    delete_up_to_time = parse(
+    time = parse(
         input(
-            "Please enter delete end time in any format supported by dateutil.parser.parse\n"
+            "Please enter the time in any format supported by dateutil.parser.parse\n"
             "Recommended format: UTC ISO format YYYY-MM-DDThh:mm:ssZ: "
         )
     )
-    print(f"Parsed timestamp: {delete_up_to_time}")
-    return delete_up_to_time
+    print(f"Parsed timestamp: {time}")
+    return time
+
+
+def time_prompt_offset_from_now() -> datetime.datetime:
+    seconds_offset = math.floor(
+        float(
+            input(
+                "Please enter the time as a offset from now in seconds. Negative offset is allowed: "
+            )
+        )
+    )
+    time_now_with_offset = datetime.datetime.now(
+        tz=datetime.timezone.utc
+    ) + datetime.timedelta(seconds=seconds_offset)
+    print(f"Absolute resulting time: {time_now_with_offset}")
+    return time_now_with_offset
 
 
 def store_select_prompt() -> (ObjectIdU32, str):