fix(timers): Improve option parsing.

src/modules/pomodoro/options.py

@@ -4,6 +4,7 @@ import discord
 
 from meta import LionBot
 from meta.errors import UserInputError
+from utils.lib import replace_multiple
 from babel.translator import ctx_translator
 from settings import ModelData
 from settings.groups import SettingGroup, ModelConfig, SettingDotDict
@@ -94,6 +95,19 @@ class TimerOptions(SettingGroup):
         def input_formatted(self):
             return str(self._data) if self._data is not None else ''
 
+        @classmethod
+        async def _parse_string(cls, parent_id, string, **kwargs):
+            try:
+                return await super()._parse_string(parent_id, string, **kwargs)
+            except UserInputError:
+                t = ctx_translator.get().t
+                raise UserInputError(
+                    t(_p(
+                        'timerset:inactivity_length|desc',
+                        "The inactivity threshold must be a positive whole number!"
+                    ))
+                )
+
     @TimerConfig.register_model_setting
     class ManagerRole(ModelData, RoleSetting):
         setting_id = 'manager_role'
@@ -173,6 +187,42 @@ class TimerOptions(SettingGroup):
         _model = TimerData.Timer
         _column = TimerData.Timer.channel_name.name
 
+        @classmethod
+        async def _parse_string(cls, parent_id, string, **kwargs):
+            # Enforce a length limit on a test-rendered string.
+            # TODO: Localised formatkey transformation
+            if string.lower() in ('', 'none', 'default'):
+                # Special cases for unsetting
+                return None
+
+            testmap = {
+                '{remaining}': "10m",
+                '{name}': "Longish name",
+                '{stage}': "FOCUS",
+                '{members}': "25",
+                '{pattern}': "50/10",
+            }
+            testmapped = replace_multiple(string, testmap)
+            if len(testmapped) > 100:
+                t = ctx_translator.get().t
+                raise UserInputError(
+                    t(_p(
+                        'timerset:channel_name_format|error:too_long',
+                        "The provided name is too long! Channel names can be at most `100` characters."
+                    ))
+                )
+            else:
+                return string
+
+        @classmethod
+        def _format_data(cls, parent_id, data, **kwargs):
+            """
+            Overriding format to truncate displayed string.
+            """
+            if data is not None and len(data) > 100:
+                data = data[:97] + '...'
+            return super()._format_data(parent_id, data, **kwargs)
+
     @TimerConfig.register_model_setting
     class FocusLength(ModelData, DurationSetting):
         setting_id = 'focus_length'