import ast
from pathlib import Path

class CodeOutliner:
    def __init__(self):
        pass

    def outline(self, code: str) -> str:
        code = code.lstrip(chr(0xFEFF))
        try:
            tree = ast.parse(code)
        except SyntaxError as e:
            return f"ERROR parsing code: {e}"

        output = []

        def get_docstring(node):
            doc = ast.get_docstring(node)
            if doc:
                return doc.splitlines()[0]
            return None

        def walk(node, indent=0):
            if isinstance(node, ast.ClassDef):
                start_line = node.lineno
                end_line = getattr(node, "end_lineno", start_line)
                output.append(f"{'  ' * indent}[Class] {node.name} (Lines {start_line}-{end_line})")
                doc = get_docstring(node)
                if doc:
                    output.append(f"{'  ' * (indent + 1)}\"\"\"{doc}\"\"\"")
                for item in node.body:
                    walk(item, indent + 1)
            
            elif isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef)):
                start_line = node.lineno
                end_line = getattr(node, "end_lineno", start_line)
                prefix = "[Async Func]" if isinstance(node, ast.AsyncFunctionDef) else "[Func]"
                
                # Check if it's a method
                # We can check the indent or the parent, but in AST walk we know if we are inside a ClassDef
                # Let's use a simpler heuristic for the outline: if indent > 0, it's likely a method.
                if indent > 0:
                    prefix = "[Method]"
                
                output.append(f"{'  ' * indent}{prefix} {node.name} (Lines {start_line}-{end_line})")
                doc = get_docstring(node)
                if doc:
                    output.append(f"{'  ' * (indent + 1)}\"\"\"{doc}\"\"\"")

        for node in tree.body:
            walk(node)
            
        return "\n".join(output)

def get_outline(path: Path, code: str) -> str:
    suffix = path.suffix.lower()
    if suffix == ".py":
        outliner = CodeOutliner()
        return outliner.outline(code)
    else:
        return f"Outlining not supported for {suffix} files yet."