import os

from google.genai import types


def get_file_content(working_directory: str, file_path: str) -> str:
    try:
        wdp = os.path.abspath(working_directory)
        target = os.path.normpath(os.path.join(wdp, file_path))
        valid_target_dir = os.path.commonpath([wdp, target]) == wdp

        if not valid_target_dir:
            return f'Error: Cannot read "{file_path}" as it is outside the permitted working directory'

        if not os.path.isfile(target):
            return f'Error: File not found or is not a regular file: "{file_path}"'

        MAX_CHARS = 10000
        content = ""

        with open(target, "r") as f:
            content += f.read(MAX_CHARS)

            if f.read(1):
                content += (
                    f'[...File "{file_path}" truncated at {MAX_CHARS} characters]'
                )

        return content
    except Exception as e:
        return f"Error: {e}"


schema_get_file_content = types.FunctionDeclaration(
    name="get_file_content",
    description="",
    parameters=types.Schema(
        type=types.Type.OBJECT,
        properties={
            "file_path": types.Schema(
                type=types.Type.STRING,
                description="",
            ),
        },
        required=["file_path"],
    ),
)