Use pydantic for config serialization/deserialization

config.py

@@ -1,26 +1,32 @@
 import os
-import json
 import time
-import inspect
 import shutil
 from pathlib import Path
+
 from filelock import FileLock
-from types import SimpleNamespace
-from dataclasses import dataclass, field
 from abc import ABC, abstractmethod
-from typing import Callable, Any, MutableSequence
+from typing import Callable, MutableSequence
 
+from pydantic import BaseModel, ConfigDict, AliasGenerator, AliasChoices, Field
 
-@dataclass
+class AlltalkConfigTheme(BaseModel):
-class AlltalkConfigTheme:
+    # Map 'class' to 'clazz' and vice versa
+    model_config = ConfigDict(
+        alias_generator=AliasGenerator(
+            validation_alias=lambda field_name:
+                {
+                    "clazz": AliasChoices("clazz", "class"),
+                }.get(field_name, None),
+            serialization_alias=lambda field_name: "class" if field_name == "clazz" else field_name,
+        )
+    )
     file: str | None = None
-    clazz = ""
+    clazz: str = "gradio/base"
 
-@dataclass
+class AlltalkConfigRvcSettings(BaseModel):
-class AlltalkConfigRvcSettings:
     rvc_enabled: bool = False
     rvc_char_model_file: str = "Disabled"
-    rvc_narr_model_file: str = "Disabled" 
+    rvc_narr_model_file: str = "Disabled"
     split_audio: bool = True
     autotune: bool = False
     pitch: int = 0
@@ -33,8 +39,7 @@ class AlltalkConfigRvcSettings:
     embedder_model: str = "hubert"
     training_data_size: int = 45000
 
-@dataclass 
+class AlltalkConfigTgwUi(BaseModel):
-class AlltalkConfigTgwUi:
     tgwui_activate_tts: bool = True
     tgwui_autoplay_tts: bool = True
     tgwui_narrator_enabled: str = "false"
@@ -54,8 +59,7 @@ class AlltalkConfigTgwUi:
     tgwui_rvc_narr_voice: str = "Disabled"
     tgwui_rvc_narr_pitch: int = 0
 
-@dataclass
+class AlltalkConfigApiDef(BaseModel):
-class AlltalkConfigApiDef:
     api_port_number: int = 7851
     api_allowed_filter: str = "[^a-zA-Z0-9\\s.,;:!?\\-\\'\"$\\u0400-\\u04FF\\u00C0-\\u017F\\u0150\\u0151\\u0170\\u0171\\u011E\\u011F\\u0130\\u0131\\u0900-\\u097F\\u2018\\u2019\\u201C\\u201D\\u3001\\u3002\\u3040-\\u309F\\u30A0-\\u30FF\\u4E00-\\u9FFF\\u3400-\\u4DBF\\uF900-\\uFAFF\\u0600-\\u06FF\\u0750-\\u077F\\uFB50-\\uFDFF\\uFE70-\\uFEFF\\uAC00-\\uD7A3\\u1100-\\u11FF\\u3130-\\u318F\\uFF01\\uFF0c\\uFF1A\\uFF1B\\uFF1F]"
     api_length_stripping: int = 3
@@ -71,8 +75,7 @@ class AlltalkConfigApiDef:
     api_autoplay: bool = False
     api_autoplay_volume: float = 0.5
 
-@dataclass
+class AlltalkConfigDebug(BaseModel):
-class AlltalkConfigDebug:
     debug_transcode: bool = False
     debug_tts: bool = False
     debug_openai: bool = False
@@ -87,8 +90,7 @@ class AlltalkConfigDebug:
     debug_transcribe: bool = False
     debug_proxy: bool = False
 
-@dataclass
+class AlltalkConfigGradioPages(BaseModel):
-class AlltalkConfigGradioPages:
     Generate_Help_page: bool = True
     Voice2RVC_page: bool = True
     TTS_Generator_page: bool = True
@@ -96,58 +98,29 @@ class AlltalkConfigGradioPages:
     alltalk_documentation_page: bool = True
     api_documentation_page: bool = True
 
+class AlltalkAvailableEngine(BaseModel):
+    name: str = ""
+    selected_model: str = ""
 
-@dataclass
+class AlltalkConfigProxyEndpoint(BaseModel):
-class AlltalkAvailableEngine:
-    name = ""
-    selected_model = ""
-
-@dataclass
-class AlltalkConfigProxyEndpoint:
     enabled: bool = False
     external_port: int = 0
     external_ip: str = "0.0.0.0"
     cert_name: str = ""
 
-    def to_dict(self):
+class AlltalkConfigProxySettings(BaseModel):
-        return {
-            "enabled": self.enabled,
-            "external_port": self.external_port,
-            "external_ip": self.external_ip,
-            "cert_name": self.cert_name
-        }
-
-@dataclass
-class AlltalkConfigProxySettings:
     proxy_enabled: bool = False
     start_on_startup: bool = False
-    gradio_endpoint: AlltalkConfigProxyEndpoint = field(default_factory=lambda: AlltalkConfigProxyEndpoint(external_port=444))
+    gradio_endpoint: AlltalkConfigProxyEndpoint = AlltalkConfigProxyEndpoint(external_port=444)
-    api_endpoint: AlltalkConfigProxyEndpoint = field(default_factory=lambda: AlltalkConfigProxyEndpoint(external_port=443))
+    api_endpoint: AlltalkConfigProxyEndpoint = AlltalkConfigProxyEndpoint(external_port=443)
     cert_validation: bool = True
     logging_enabled: bool = True
     log_level: str = "INFO"
 
-    def __post_init__(self):
-        # Handle conversion from dict to proper objects
-        if isinstance(self.gradio_endpoint, dict):
-            self.gradio_endpoint = AlltalkConfigProxyEndpoint(**self.gradio_endpoint)
-        if isinstance(self.api_endpoint, dict):
-            self.api_endpoint = AlltalkConfigProxyEndpoint(**self.api_endpoint)
-
-    def to_dict(self):
-        return {
-            "proxy_enabled": self.proxy_enabled,
-            "start_on_startup": self.start_on_startup,
-            "gradio_endpoint": self.gradio_endpoint.to_dict(),
-            "api_endpoint": self.api_endpoint.to_dict(),
-            "cert_validation": self.cert_validation,
-            "logging_enabled": self.logging_enabled,
-            "log_level": self.log_level
-        }
-
 class AbstractJsonConfig(ABC):
-
     def __init__(self, config_path: Path | str, file_check_interval: int):
+        super().__init__()
+        self.__delegate = None
         self.__config_path = Path(config_path) if type(config_path) is str else config_path
         self.__last_read_time = 0  # Track when we last read the file
         self.__file_check_interval = file_check_interval
@@ -159,14 +132,6 @@ class AbstractJsonConfig(ABC):
         self._load_config()
         return self
 
-    def to_dict(self):
-        # Remove private fields:
-        without_private_fields = {}
-        for attr, value in self.__dict__.items():
-            if not attr.startswith("_"):
-                without_private_fields[attr] = value
-        return without_private_fields
-
     def _reload_on_change(self):
         # Check if config file has been modified and reload if needed
         if time.time() - self.__last_read_time >= self.__file_check_interval:
@@ -181,32 +146,19 @@ class AbstractJsonConfig(ABC):
         self.__last_read_time = self.get_config_path().stat().st_mtime
         def __load():
             with open(self.get_config_path(), "r") as configfile:
-                data = json.load(configfile, object_hook=self._object_hook())
+                json_string = configfile.read()
-            self._handle_loaded_config(data)
+            # The delegate is the actual config loaded:
+            self.__delegate = self._handle_loaded_config(json_string)
         self.__with_lock_and_backup(self.get_config_path(), False, __load)
 
-    def _object_hook(self) -> Callable[[dict[Any, Any]], Any] | None:
-        return lambda d: SimpleNamespace(**d)
-
     def _save_file(self, path: Path | None | str, default=None, indent=4):
         file_path = (Path(path) if type(path) is str else path) if path is not None else self.get_config_path()
-        
+
-        def custom_default(o):
-            if isinstance(o, Path):
-                return str(o)  # Convert Path objects to strings
-            elif hasattr(o, '__dict__'):
-                return o.__dict__  # Use the object's __dict__ if it exists
-            else:
-                raise TypeError(f"Object of type {type(o).__name__} is not JSON serializable")
-        
-        default = default or custom_default
-        
         def __save():
             with open(file_path, 'w') as file:
-                json.dump(self.to_dict(), file, indent=indent, default=default)
+                file.write(self.__delegate.model_dump_json(indent=indent, by_alias=True))
-        
-        self.__with_lock_and_backup(file_path, True, __save)
 
+        self.__with_lock_and_backup(file_path, True, __save)
 
     def __with_lock_and_backup(self, path: Path, backup: bool, callable: Callable[[], None]):
         lock_path = path.with_suffix('.lock')
@@ -226,34 +178,71 @@ class AbstractJsonConfig(ABC):
                     raise Exception(f"Failed to save config: {e}")
         finally:
             # Cleanup lock and backup files:
-            if lock_path.exists():  # Only try to delete if it exists
+            if lock_path.exists():
-                try:
+                lock_path.unlink()
-                    lock_path.unlink()
+
-                except FileNotFoundError:
-                    pass  # Ignore if file doesn't exist
-            
             if backup and backup_path and backup_path.exists():
-                try:
+                backup_path.unlink()
-                    backup_path.unlink()
-                except FileNotFoundError:
-                    pass  # Ignore if file doesn't exist
 
     @abstractmethod
-    def _handle_loaded_config(self, data):
+    def _handle_loaded_config(self, json_string: str):
         pass
 
-class AlltalkNewEnginesConfig(AbstractJsonConfig):
+    def to_dict(self):
+        return self.__delegate.model_dump(by_alias=True)
+
+    # Delegation to the loaded config data
+    @property
+    def _xtra(self): return [o for o in dir(self.__delegate) if not o.startswith('_')]
+
+    def __getattr__(self, key):
+        if key in self._xtra: return getattr(self.__delegate, key)
+        raise AttributeError(key)
+
+    def __getattribute__(self, key):
+        if key.startswith("_"):
+            # Private and protected attributes always are on self:
+            return super().__getattribute__(key)
+        if key in self._xtra:
+            # Delegate attribute
+            return getattr(self.__delegate, key)
+        # Get own attribute:
+        return super().__getattribute__(key)
+
+    def __setattr__(self, key, value):
+        if key.startswith("_"):
+            # Private and protected attributes always are on self:
+            super().__setattr__(key, value)
+        elif key in dir(self.__delegate):
+            # Delegate attribute
+            setattr(self.__delegate, key, value)
+        else:
+            # Set own attribute:
+            super().__setattr__(key, value)
+
+    def __dir__(self):
+        def custom_dir(c, add): return dir(type(c)) + list(c.__dict__.keys()) + add
+        return custom_dir(self, self._xtra)
+
+class AlltalkNewEnginesConfigFields:
+    engines_available: MutableSequence[AlltalkAvailableEngine] = Field(default_factory=list)
+
+class AlltalkNewEnginesConfigModel(BaseModel, AlltalkNewEnginesConfigFields):
+
+    def get_engine_names_available(self):
+        return [engine.name for engine in self.engines_available]
+
+    def get_engines_matching(self, condition: Callable[[AlltalkAvailableEngine], bool]):
+        return [x for x in self.engines_available if condition(x)]
+
+class AlltalkNewEnginesConfig(AbstractJsonConfig, AlltalkNewEnginesConfigFields):
     __instance = None
     __this_dir = Path(__file__).parent.resolve()
 
     def __init__(self, config_path: Path | str = os.path.join(__this_dir, "system", "tts_engines", "new_engines.json")):
         super().__init__(config_path, 5)
-        self.engines_available: MutableSequence[AlltalkAvailableEngine] = []
         self._load_config()
 
-    def get_engine_names_available(self):
-        return [engine.name for engine in self.engines_available]
-
     @staticmethod
     def get_instance():
         if AlltalkNewEnginesConfig.__instance is None:
@@ -261,61 +250,19 @@ class AlltalkNewEnginesConfig(AbstractJsonConfig):
         AlltalkNewEnginesConfig.__instance._reload_on_change()
         return AlltalkNewEnginesConfig.__instance
 
-    def _handle_loaded_config(self, data):
+    def _handle_loaded_config(self, json_string: str):
-        self.engines_available = data.engines_available
+        return AlltalkNewEnginesConfigModel.model_validate_json(json_string)
 
-    def get_engines_matching(self, condition: Callable[[AlltalkAvailableEngine], bool]):
+class AlltalkTTSEnginesConfigFields:
-        return [x for x in self.engines_available if condition(x)]
+    engines_available: MutableSequence[AlltalkAvailableEngine] = Field(default_factory=list)
+    engine_loaded: str = ""
+    selected_model: str = ""
 
-
+class AlltalkTTSEnginesConfigModel(BaseModel, AlltalkTTSEnginesConfigFields):
-class AlltalkTTSEnginesConfig(AbstractJsonConfig):
-    __instance = None
-    __this_dir = Path(__file__).parent.resolve()
-
-    def __init__(self, config_path: Path | str = os.path.join(__this_dir, "system", "tts_engines", "tts_engines.json")):
-        super().__init__(config_path, 5)
-        self.engines_available: MutableSequence[AlltalkAvailableEngine] = []
-        self.engine_loaded = ""
-        self.selected_model = ""
-        self._load_config()
 
     def get_engine_names_available(self):
         return [engine.name for engine in self.engines_available]
 
-    @staticmethod
-    def get_instance(force_reload = False):
-        if AlltalkTTSEnginesConfig.__instance is None:
-            force_reload = False
-            AlltalkTTSEnginesConfig.__instance = AlltalkTTSEnginesConfig()
-
-        if force_reload:
-            AlltalkTTSEnginesConfig.__instance.reload()
-        else:
-            AlltalkTTSEnginesConfig.__instance._reload_on_change()
-        return AlltalkTTSEnginesConfig.__instance
-
-    def _handle_loaded_config(self, data):
-        # List of the available TTS engines:
-        self.engines_available = self.__handle_loaded_config_engines(data)
-
-        # The currently set TTS engine from tts_engines.json
-        self.engine_loaded = data.engine_loaded
-        self.selected_model = data.selected_model
-
-    def __handle_loaded_config_engines(self, data):
-        available_engines = data.engines_available
-        available_engine_names = [engine.name for engine in available_engines]
-
-        # Getting the engines that are not already part of the available engines:
-        new_engines_config = AlltalkNewEnginesConfig.get_instance()
-        new_engines = new_engines_config.get_engines_matching(lambda eng: eng.name not in available_engine_names)
-
-        # Merge engines:
-        return available_engines + new_engines
-
-    def save(self, path: Path | str | None = None):
-        self._save_file(path)
-
     def is_valid_engine(self, engine_name):
         return engine_name in self.get_engine_names_available()
 
@@ -329,29 +276,74 @@ class AlltalkTTSEnginesConfig(AbstractJsonConfig):
                 return self
         return self
 
-@dataclass
+class AlltalkTTSEnginesConfig(AbstractJsonConfig, AlltalkTTSEnginesConfigFields):
-class AlltalkConfig(AbstractJsonConfig):
+    __instance = None
+    __this_dir = Path(__file__).parent.resolve()
+
+    def __init__(self, config_path: Path | str = os.path.join(__this_dir, "system", "tts_engines", "tts_engines.json")):
+        super().__init__(config_path, 5)
+        self._load_config()
+
+    @staticmethod
+    def get_instance(force_reload = False):
+        if AlltalkTTSEnginesConfig.__instance is None:
+            force_reload = False
+            AlltalkTTSEnginesConfig.__instance = AlltalkTTSEnginesConfig()
+
+        if force_reload:
+            AlltalkTTSEnginesConfig.__instance.reload()
+        else:
+            AlltalkTTSEnginesConfig.__instance._reload_on_change()
+        return AlltalkTTSEnginesConfig.__instance
+
+    def _handle_loaded_config(self, json_string: str):
+        cfg = AlltalkTTSEnginesConfigModel.model_validate_json(json_string)
+        cfg.engines_available = self.__handle_loaded_config_engines(cfg.engines_available)
+        return cfg
+
+    def __handle_loaded_config_engines(self, available_engines):
+        available_engine_names = [engine.name for engine in available_engines]
+
+        # Getting the engines that are not already part of the available engines:
+        new_engines_config = AlltalkNewEnginesConfig.get_instance()
+        new_engines = new_engines_config.get_engines_matching(lambda eng: eng.name not in available_engine_names)
+
+        # Merge engines:
+        return available_engines + new_engines
+
+    def save(self, path: Path | str | None = None):
+        self._save_file(path)
+
+class AlltalkConfigFields:
+    branding: str = "AllTalk "
+    delete_output_wavs: str = "Disabled"
+    gradio_interface: bool = True
+    output_folder: str = "outputs"
+    gradio_port_number: int = 7852
+    firstrun_model: bool = True
+    firstrun_splash: bool = True
+    launch_gradio: bool = True
+    transcode_audio_format: str = "Disabled"
+    theme: AlltalkConfigTheme = AlltalkConfigTheme()
+    rvc_settings: AlltalkConfigRvcSettings = AlltalkConfigRvcSettings()
+    tgwui: AlltalkConfigTgwUi = AlltalkConfigTgwUi()
+    api_def: AlltalkConfigApiDef = AlltalkConfigApiDef()
+    debugging: AlltalkConfigDebug = AlltalkConfigDebug()
+    gradio_pages: AlltalkConfigGradioPages = AlltalkConfigGradioPages()
+    proxy_settings: AlltalkConfigProxySettings = AlltalkConfigProxySettings()
+
+class AlltalkConfigModel(BaseModel, AlltalkConfigFields):
+    __this_dir = Path(__file__).parent.resolve()
+
+    def get_output_directory(self):
+        return self.__this_dir / self.output_folder
+
+class AlltalkConfig(AbstractJsonConfig, AlltalkConfigFields):
     __instance = None
     __this_dir = Path(__file__).parent.resolve()
 
     def __init__(self, config_path: Path | str = __this_dir / "confignew.json"):
         super().__init__(config_path, 5)
-        self.branding = ""
-        self.delete_output_wavs = ""
-        self.gradio_interface = False
-        self.output_folder = ""
-        self.gradio_port_number = 0
-        self.firstrun_model = False
-        self.firstrun_splash = False
-        self.launch_gradio = False
-        self.transcode_audio_format = ""
-        self.theme = AlltalkConfigTheme()
-        self.rvc_settings = AlltalkConfigRvcSettings()
-        self.tgwui = AlltalkConfigTgwUi()
-        self.api_def = AlltalkConfigApiDef()
-        self.debugging = AlltalkConfigDebug()
-        self.gradio_pages = AlltalkConfigGradioPages()
-        self.proxy_settings = AlltalkConfigProxySettings()
         self._load_config()
 
     @staticmethod
@@ -370,114 +362,10 @@ class AlltalkConfig(AbstractJsonConfig):
             AlltalkConfig.__instance._reload_on_change()
         return AlltalkConfig.__instance
 
-    def get_output_directory(self):
-        return self.__this_dir / self.output_folder
-
     def save(self, path: Path | str | None = None):
         self._save_file(path)
 
-    def _handle_loaded_config(self, data):
+    def _handle_loaded_config(self, json_string: str):
-        from dataclasses import fields, is_dataclass, asdict
+        model = AlltalkConfigModel.model_validate_json(json_string)
-        debug_me = False
+        model.get_output_directory().mkdir(parents=True, exist_ok=True)
-        if debug_me:
+        return model
-            print("=== Loading Config ===")
-            print(f"Initial data state: {vars(data)}")
-
-        # Create new instances with defaults
-        default_instances = {
-            'debugging': AlltalkConfigDebug(),
-            'rvc_settings': AlltalkConfigRvcSettings(),
-            'tgwui': AlltalkConfigTgwUi(),
-            'api_def': AlltalkConfigApiDef(),
-            'theme': AlltalkConfigTheme(),
-            'gradio_pages': AlltalkConfigGradioPages(),
-            'proxy_settings': AlltalkConfigProxySettings()
-        }
-
-        if debug_me:
-            print("\nDefault values for each class:")
-
-        for name, instance in default_instances.items():
-            if debug_me:
-                print(f"{name}: {asdict(instance)}")
-                print(f"Default values: {[(f.name, getattr(instance, f.name)) for f in fields(instance)]}")
-
-            if hasattr(data, name):
-                source = getattr(data, name)
-                if debug_me:
-                    print(f"Source data for {name}: {vars(source) if hasattr(source, '__dict__') else source}")
-
-                # Special handling for proxy_settings due to nested structure
-                if name == 'proxy_settings' and hasattr(source, '__dict__'):
-                    new_instance = AlltalkConfigProxySettings()
-                    for field in fields(new_instance):
-                        if hasattr(source, field.name):
-                            field_value = getattr(source, field.name)
-                            if field.name in ['gradio_endpoint', 'api_endpoint']:
-                                # Handle nested endpoint objects
-                                if isinstance(field_value, dict):
-                                    setattr(new_instance, field.name, 
-                                        AlltalkConfigProxyEndpoint(**field_value))
-                                elif hasattr(field_value, '__dict__'):
-                                    setattr(new_instance, field.name,
-                                        AlltalkConfigProxyEndpoint(**field_value.__dict__))
-                            else:
-                                setattr(new_instance, field.name, field_value)
-                    instance = new_instance
-                else:
-                    # Standard handling for other dataclasses
-                    for field in fields(instance):
-                        if hasattr(source, field.name):
-                            setattr(instance, field.name, getattr(source, field.name))
-
-                if debug_me:
-                    print(f"Processed instance {name}: {asdict(instance)}")
-
-            setattr(self, name, instance)
-
-        # Handle non-dataclass fields
-        for n, v in inspect.getmembers(data):
-            if hasattr(self, n) and not n.startswith("__") and not is_dataclass(type(getattr(self, n))):
-                setattr(self, n, v)
-
-        # Special handling for theme class/clazz as before
-        self.theme.clazz = data.theme.__dict__.get("class", data.theme.__dict__.get("clazz", ""))
-        self.get_output_directory().mkdir(parents=True, exist_ok=True)
-
-    def to_dict(self):
-        from dataclasses import is_dataclass, asdict
-        debug_me = False
-        if debug_me:
-            print("=== Converting to dict ===")
-        result = {}
-
-        for key, value in vars(self).items():
-            if not key.startswith('_'):
-                # print(f"\nProcessing {key}:")
-                if key == 'proxy_settings' and is_dataclass(value):
-                    # Special handling for proxy settings
-                    result[key] = value.to_dict()
-                elif is_dataclass(value):
-                    # print(f"Dataclass value before conversion: {vars(value)}")
-                    result[key] = asdict(value)
-                    # print(f"Converted to dict: {result[key]}")
-                elif isinstance(value, SimpleNamespace):
-                    # print(f"SimpleNamespace value: {value.__dict__}")
-                    result[key] = value.__dict__
-                else:
-                    # print(f"Regular value: {value}")
-                    result[key] = value
-
-        # Maintain existing theme handling exactly as before
-        if 'theme' in result:
-            if debug_me:
-                print("\nProcessing theme:")
-                print(f"Before class handling: {result['theme']}")
-            result['theme']['class'] = self.theme.clazz
-            result['theme'].pop('clazz', None)
-            if debug_me:
-                print(f"After class handling: {result['theme']}")
-        if debug_me:
-            print(f"\nFinal dict: {result}")           
-        return result
-

confignew.json

@@ -44,7 +44,9 @@
         "tgwui_show_text": true,
         "tgwui_character_voice": "female_01.wav",
         "tgwui_rvc_char_voice": "Disabled",
-        "tgwui_rvc_narr_voice": "Disabled"
+        "tgwui_rvc_char_pitch": 0,
+        "tgwui_rvc_narr_voice": "Disabled",
+        "tgwui_rvc_narr_pitch": 0
     },
     "api_def": {
         "api_port_number": 7851,
@@ -68,7 +70,14 @@
         "debug_openai": false,
         "debug_concat": false,
         "debug_tts_variables": false,
-        "debug_rvc": false
+        "debug_rvc": false,
+        "debug_func": false,
+        "debug_api": false,
+        "debug_fullttstext": false,
+        "debug_narrator": false,
+        "debug_gradio_IP": false,
+        "debug_transcribe": false,
+        "debug_proxy": false
     },
     "gradio_pages": {
         "Generate_Help_page": true,
@@ -77,5 +86,24 @@
         "TTS_Engines_Settings_page": true,
         "alltalk_documentation_page": true,
         "api_documentation_page": true
+    },
+    "proxy_settings": {
+        "proxy_enabled": false,
+        "start_on_startup": false,
+        "gradio_endpoint": {
+            "enabled": false,
+            "external_port": 444,
+            "external_ip": "0.0.0.0",
+            "cert_name": ""
+        },
+        "api_endpoint": {
+            "enabled": false,
+            "external_port": 443,
+            "external_ip": "0.0.0.0",
+            "cert_name": ""
+        },
+        "cert_validation": true,
+        "logging_enabled": true,
+        "log_level": "INFO"
     }
-}
+}

test/confignew_partial.json

@@ -0,0 +1,15 @@
+{
+    "branding": "Another AllTalk ",
+    "theme": {
+        "file": null
+    },
+    "rvc_settings": {
+        "rvc_narr_model_file": "another/file"
+    },
+    "tgwui": {
+        "tgwui_narrator_voice": "another_female_01.wav"
+    },
+    "api_def": {
+        "api_output_file_name": "another_myoutputfile"
+    }
+}

test/empty.json

@@ -0,0 +1 @@
+{}

test/test_config.py

@@ -1,17 +1,57 @@
 import os.path
 import tempfile
-import unittest
+from unittest import TestCase
 from pathlib import Path
-
 from config import AlltalkConfig, AlltalkTTSEnginesConfig, AlltalkNewEnginesConfig
 
 
-class TestAlltalkConfig(unittest.TestCase):
+class TestAlltalkConfig(TestCase):
 
     def setUp(self):
         self.config = AlltalkConfig.get_instance()
         self.config.reload()
 
+    def test_default_values_loaded(self):
+        cfg = AlltalkConfig(Path(__file__).parent.resolve() / 'empty.json')
+
+        # Since the default config file is expected to also contain the
+        # default values, we can simply check that both dictionaries are identical:
+        self.assertEqual(self.config.to_dict(), cfg.to_dict())
+
+    def test_no_default_values_missing(self):
+        # Loading the empty JSON will populate the config with defaults from the code:
+        cfg = AlltalkConfig(Path(__file__).parent.resolve() / 'empty.json')
+        with tempfile.NamedTemporaryFile(suffix=".json") as tmp:
+            cfg.save(tmp.name)
+            # Compare the defaults from code (when written to a file) to the actual default config file:
+            with open(tmp.name, "r") as file1:
+                with open(self.config.get_config_path(), "r") as file2:
+                    self.assertEqual(file1.read(), file2.read())
+
+    def test_values_merged_with_defaults(self):
+        cfg = AlltalkConfig(Path(__file__).parent.resolve() / 'confignew_partial.json')
+
+        # Check some values that are missing in the JSON:
+        self.assertEqual(cfg.gradio_port_number, 7852)
+        self.assertEqual(cfg.theme.clazz, "gradio/base")
+        self.assertEqual(cfg.rvc_settings.index_rate, 0.75)
+        self.assertEqual(cfg.rvc_settings.embedder_model, "hubert")
+        self.assertEqual(cfg.tgwui.tgwui_language, "English")
+        self.assertEqual(cfg.tgwui.tgwui_repetitionpenalty_set, 10)
+        self.assertEqual(cfg.api_def.api_port_number, 7851)
+        self.assertEqual(cfg.api_def.api_text_filtering, "standard")
+        self.assertFalse(cfg.debugging.debug_rvc)
+        self.assertFalse(cfg.debugging.debug_openai)
+
+    def test_loading_values(self):
+        cfg = AlltalkConfig(Path(__file__).parent.resolve() / 'confignew_partial.json')
+
+        # Check that some values that are in the JSON:
+        self.assertEqual(cfg.branding, "Another AllTalk ")
+        self.assertEqual(cfg.rvc_settings.rvc_narr_model_file, "another/file")
+        self.assertEqual(cfg.tgwui.tgwui_narrator_voice, "another_female_01.wav")
+        self.assertEqual(cfg.api_def.api_output_file_name, "another_myoutputfile")
+
     def test_default_config_path(self):
         expected_config_path = Path(__file__).parent.parent.resolve() / "confignew.json"
         self.assertEqual(self.config.get_config_path(), expected_config_path)
@@ -119,15 +159,23 @@ class TestAlltalkConfig(unittest.TestCase):
     def test_save_config(self):
         with tempfile.NamedTemporaryFile(suffix=".json") as tmp:
             self.config.branding = "foo"
+            self.config.theme.clazz = "bar"
             self.config.save(tmp.name)
             new_config = AlltalkConfig(tmp.name)
             self.assertEqual(new_config.branding, "foo")
+            self.assertEqual(new_config.theme.clazz, "bar")
+
+            # Test serialization of field 'clazz' to field "class"
+            with open(tmp.name, "r") as file:
+                json = file.read()
+                self.assertTrue("class" in json)
+                self.assertFalse("clazz" in json)
 
     def test_no_private_fields(self):
         for attr in self.config.to_dict().keys():
             self.assertTrue(not attr.startswith("_"))
 
-class TestAlltalkTTSEnginesConfig(unittest.TestCase):
+class TestAlltalkTTSEnginesConfig(TestCase):
 
     def setUp(self):
         self.tts_engines_config = AlltalkTTSEnginesConfig.get_instance()
@@ -178,7 +226,7 @@ class TestAlltalkTTSEnginesConfig(unittest.TestCase):
             self.assertTrue(not attr.startswith("_"))
 
 
-class TestAlltalkNewEnginesConfig(unittest.TestCase):
+class TestAlltalkNewEnginesConfig(TestCase):
 
     def setUp(self):
         self.new_engines_config = AlltalkNewEnginesConfig.get_instance()