New archi: domain driven development

Working but need to check out code

domain/subtitles/value_objects.py

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+"""Subtitle domain value objects."""
+from dataclasses import dataclass
+from enum import Enum
+
+from ..shared.exceptions import ValidationError
+
+
+class Language(Enum):
+    """Supported subtitle languages."""
+    ENGLISH = "en"
+    FRENCH = "fr"
+    SPANISH = "es"
+    GERMAN = "de"
+    ITALIAN = "it"
+    PORTUGUESE = "pt"
+    RUSSIAN = "ru"
+    JAPANESE = "ja"
+    KOREAN = "ko"
+    CHINESE = "zh"
+    ARABIC = "ar"
+    
+    @classmethod
+    def from_code(cls, code: str) -> "Language":
+        """
+        Get language from ISO 639-1 code.
+        
+        Args:
+            code: Two-letter language code
+        
+        Returns:
+            Language enum value
+        
+        Raises:
+            ValidationError: If code is not supported
+        """
+        code_lower = code.lower()
+        for lang in cls:
+            if lang.value == code_lower:
+                return lang
+        raise ValidationError(f"Unsupported language code: {code}")
+
+
+class SubtitleFormat(Enum):
+    """Supported subtitle formats."""
+    SRT = "srt"  # SubRip
+    ASS = "ass"  # Advanced SubStation Alpha
+    SSA = "ssa"  # SubStation Alpha
+    VTT = "vtt"  # WebVTT
+    SUB = "sub"  # MicroDVD
+    
+    @classmethod
+    def from_extension(cls, extension: str) -> "SubtitleFormat":
+        """
+        Get format from file extension.
+        
+        Args:
+            extension: File extension (with or without dot)
+        
+        Returns:
+            SubtitleFormat enum value
+        
+        Raises:
+            ValidationError: If extension is not supported
+        """
+        ext = extension.lower().lstrip('.')
+        for fmt in cls:
+            if fmt.value == ext:
+                return fmt
+        raise ValidationError(f"Unsupported subtitle format: {extension}")
+
+
+@dataclass(frozen=True)
+class TimingOffset:
+    """
+    Value object representing subtitle timing offset in milliseconds.
+    
+    Used for synchronizing subtitles with video.
+    """
+    milliseconds: int
+    
+    def __post_init__(self):
+        """Validate timing offset."""
+        if not isinstance(self.milliseconds, int):
+            raise ValidationError(f"Timing offset must be an integer, got {type(self.milliseconds)}")
+    
+    def to_seconds(self) -> float:
+        """Convert to seconds."""
+        return self.milliseconds / 1000.0
+    
+    def __str__(self) -> str:
+        return f"{self.milliseconds}ms"
+    
+    def __repr__(self) -> str:
+        return f"TimingOffset({self.milliseconds})"