Initial commit with working cli prototype

src/reviewllama/cli.py

@@ -0,0 +1,146 @@
+import argparse
+from dataclasses import dataclass
+from typing import List, Optional
+from pathlib import Path
+import sys
+
+
+@dataclass(frozen=True)
+class OllamaConfig:
+    """Configuration for Ollama client."""
+
+    model: str
+    server_url: str
+    timeout: int
+    max_retries: int
+
+
+@dataclass(frozen=True)
+class ReviewConfig:
+    """Complete configuration for ReviewLlama."""
+
+    paths: List[Path]
+    ollama: OllamaConfig
+
+
+def normalize_server_url(url: str) -> str:
+    """Normalize Ollama server URL to ensure proper format."""
+    if not url.startswith(("http://", "https://")):
+        return f"http://{url}"
+    return url.rstrip("/")
+
+
+def create_ollama_config(
+    model: str, server_url: str, timeout: int, max_retries: int
+) -> OllamaConfig:
+    """Create OllamaConfig with validated parameters."""
+    return OllamaConfig(
+        model=model,
+        server_url=normalize_server_url(server_url),
+        timeout=timeout,
+        max_retries=max_retries,
+    )
+
+
+def create_review_config(
+    paths: List[Path], ollama_config: OllamaConfig
+) -> ReviewConfig:
+    """Create complete ReviewConfig from validated components."""
+    return ReviewConfig(paths=paths, ollama=ollama_config)
+
+
+def create_argument_parser() -> argparse.ArgumentParser:
+    """Create and configure the argument parser."""
+    parser = argparse.ArgumentParser(
+        prog="reviewllama",
+        description="AI-powered code review assistant",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  reviewllama . --model gemma3:27b --server localhost:11434
+  reviewllama src/ tests/ --model llama3.2:7b --timeout 60
+        """,
+    )
+
+    parser.add_argument(
+        "paths",
+        nargs="+",
+        metavar="PATH",
+        help="One or more file paths or git directories to review",
+    )
+
+    parser.add_argument(
+        "--model",
+        default="llama3.2:3b",
+        help="Ollama model to use for code review (default: %(default)s)",
+    )
+
+    parser.add_argument(
+        "--server",
+        dest="server_url",
+        default="localhost:11434",
+        help="Ollama server URL (default: %(default)s)",
+    )
+
+    parser.add_argument(
+        "--timeout",
+        type=int,
+        default=30,
+        help="Request timeout in seconds (default: %(default)s)",
+    )
+
+    parser.add_argument(
+        "--max-retries",
+        dest="max_retries",
+        type=int,
+        default=3,
+        help="Maximum number of retry attempts (default: %(default)s)",
+    )
+
+    return parser
+
+
+def parse_raw_arguments(args: Optional[List[str]] = None) -> argparse.Namespace:
+    """Parse command line arguments into raw namespace."""
+    parser = create_argument_parser()
+    return parser.parse_args(args)
+
+
+def transform_namespace_to_config(namespace: argparse.Namespace) -> ReviewConfig:
+    """Transform argparse namespace into ReviewConfig."""
+    paths = [Path(path_str) for path_str in namespace.paths]
+
+    ollama_config = create_ollama_config(
+        model=namespace.model,
+        server_url=namespace.server_url,
+        timeout=namespace.timeout,
+        max_retries=namespace.max_retries,
+    )
+
+    return create_review_config(paths=paths, ollama_config=ollama_config)
+
+
+def parse_arguments(args: Optional[List[str]] = None) -> ReviewConfig:
+    """Parse command line arguments and return validated configuration."""
+    raw_namespace = parse_raw_arguments(args)
+    return transform_namespace_to_config(raw_namespace)
+
+
+def cli() -> None:
+    """Main entry point for the CLI."""
+    try:
+        config = parse_arguments()
+        # TODO: Pass config to review engine
+        print(f"Reviewing {len(config.paths)} path(s) with model {config.ollama.model}")
+        for path in config.paths:
+            print(f"  - {path}")
+    except SystemExit:
+        # argparse calls sys.exit on error, let it propagate
+        raise
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()