From 1bf531cc74ceecc5a9111970162237c5df985bb3 Mon Sep 17 00:00:00 2001
From: 7000pctAUTO <lukems3823@gmail.com>
Date: Fri, 30 Jan 2026 18:57:28 +0000
Subject: [PATCH] Add core source files: main, models, config

---
 src/codexchange/models.py | 118 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/codexchange/models.py

diff --git a/src/codexchange/models.py b/src/codexchange/models.py
new file mode 100644
index 0000000..0ee9169
--- /dev/null
+++ b/src/codexchange/models.py
@@ -0,0 +1,118 @@
+"""Pydantic models for CodeXchange CLI."""
+
+from enum import Enum
+from typing import Optional
+
+from pydantic import BaseModel, Field, field_validator
+
+
+class Language(str, Enum):
+    """Supported programming languages."""
+    
+    JAVASCRIPT = "javascript"
+    TYPESCRIPT = "typescript"
+    PYTHON = "python"
+    JAVA = "java"
+    
+    @classmethod
+    def from_extension(cls, extension: str) -> Optional["Language"]:
+        """Get language from file extension."""
+        extension_map = {
+            ".js": cls.JAVASCRIPT,
+            ".jsx": cls.JAVASCRIPT,
+            ".ts": cls.TYPESCRIPT,
+            ".tsx": cls.TYPESCRIPT,
+            ".py": cls.PYTHON,
+            ".java": cls.JAVA,
+        }
+        return extension_map.get(extension.lower())
+    
+    @property
+    def extension(self) -> str:
+        """Get file extension for language."""
+        extension_map = {
+            Language.JAVASCRIPT: ".js",
+            Language.TYPESCRIPT: ".ts",
+            Language.PYTHON: ".py",
+            Language.JAVA: ".java",
+        }
+        return extension_map[self]
+    
+    @property
+    def syntax_check_command(self) -> Optional[str]:
+        """Get syntax check command for language."""
+        commands = {
+            Language.PYTHON: "python",
+            Language.TYPESCRIPT: "npx tsc --noEmit",
+            Language.JAVASCRIPT: "npx eslint",
+            Language.JAVA: None,
+        }
+        return commands.get(self)
+
+
+VALID_CONVERSIONS = {
+    (Language.JAVASCRIPT, Language.TYPESCRIPT),
+    (Language.JAVASCRIPT, Language.PYTHON),
+    (Language.TYPESCRIPT, Language.JAVASCRIPT),
+    (Language.TYPESCRIPT, Language.PYTHON),
+    (Language.PYTHON, Language.JAVASCRIPT),
+    (Language.PYTHON, Language.TYPESCRIPT),
+    (Language.JAVA, Language.PYTHON),
+    (Language.PYTHON, Language.JAVA),
+    (Language.JAVASCRIPT, Language.JAVA),
+    (Language.JAVA, Language.JAVASCRIPT),
+    (Language.TYPESCRIPT, Language.JAVA),
+    (Language.JAVA, Language.TYPESCRIPT),
+}
+
+
+class ConversionRequest(BaseModel):
+    """Request model for code conversion."""
+    
+    source_code: str = Field(..., description="Source code to convert")
+    source_language: Language = Field(..., description="Source programming language")
+    target_language: Language = Field(..., description="Target programming language")
+    model: str = Field(default="codellama", description="Ollama model to use")
+    
+    @field_validator("target_language")
+    @classmethod
+    def validate_conversion(cls, v: Language, info) -> Language:
+        """Validate that the conversion pair is supported."""
+        source = info.data.get("source_language")
+        if source and (source, v) not in VALID_CONVERSIONS:
+            raise ValueError(
+                f"Conversion from {source.value} to {v.value} is not supported. "
+                f"Supported conversions: JS<->TS, JS<->Python, JS<->Java, TS<->Python, TS<->Java, Python<->Java"
+            )
+        return v
+
+
+class ConversionResult(BaseModel):
+    """Result model for code conversion."""
+    
+    success: bool
+    converted_code: Optional[str] = None
+    original_code: str
+    source_language: Language
+    target_language: Language
+    model: str
+    error_message: Optional[str] = None
+    syntax_verified: bool = False
+    syntax_warnings: list[str] = Field(default_factory=list)
+
+
+class ModelInfo(BaseModel):
+    """Information about an Ollama model."""
+    
+    name: str
+    size: Optional[str] = None
+    modified_at: Optional[str] = None
+
+
+class FileConversionResult(BaseModel):
+    """Result of converting a single file."""
+    
+    input_path: str
+    output_path: Optional[str] = None
+    success: bool
+    error_message: Optional[str] = None