better validation for the config file path

codeflash/cli_cmds/cmd_init.py

@@ -171,10 +171,23 @@ def ask_run_end_to_end_test(args: Namespace) -> None:
         run_end_to_end_test(args, file_path)
 
 
-def is_valid_pyproject_toml(pyproject_toml_path: Path) -> tuple[bool, dict[str, Any] | None, str]:  # noqa: PLR0911
-    if not pyproject_toml_path.exists():
-        return False, None, f"Configuration file not found: {pyproject_toml_path}"
+def config_found(pyproject_toml_path: Union[str, Path]) -> tuple[bool, str]:
+    pyproject_toml_path = Path(pyproject_toml_path)
 
+    if not pyproject_toml_path.exists():
+        return False, f"Configuration file not found: {pyproject_toml_path}"
+
+    if not pyproject_toml_path.is_file():
+        return False, f"Configuration file is not a file: {pyproject_toml_path}"
+
+    if pyproject_toml_path.suffix != ".toml":
+        return False, f"Configuration file is not a .toml file: {pyproject_toml_path}"
+
+    return True, ""
+
+
+def is_valid_pyproject_toml(pyproject_toml_path: Union[str, Path]) -> tuple[bool, dict[str, Any] | None, str]:
+    pyproject_toml_path = Path(pyproject_toml_path)
     try:
         config, _ = parse_config_file(pyproject_toml_path)
     except Exception as e:
@@ -206,6 +219,10 @@ def should_modify_pyproject_toml() -> tuple[bool, dict[str, Any] | None]:
 
     pyproject_toml_path = Path.cwd() / "pyproject.toml"
 
+    found, _ = config_found(pyproject_toml_path)
+    if not found:
+        return True, None
+
     valid, config, _message = is_valid_pyproject_toml(pyproject_toml_path)
     if not valid:
         # needs to be re-configured

codeflash/lsp/beta.py

@@ -14,6 +14,7 @@ from codeflash.cli_cmds.cli import process_pyproject_config
 from codeflash.cli_cmds.cmd_init import (
     CommonSections,
     VsCodeSetupInfo,
+    config_found,
     configure_pyproject_toml,
     create_empty_pyproject_toml,
     create_find_common_tags_file,
@@ -263,6 +264,10 @@ def init_project(params: ValidateProjectParams) -> dict[str, str]:
             "root": root,
         }
 
+    found, message = config_found(pyproject_toml_path)
+    if not found:
+        return {"status": "error", "message": message}
+
     valid, config, reason = is_valid_pyproject_toml(pyproject_toml_path)
     if not valid:
         return {