import json
import os
from typing import List
from pydantic import BaseModel


class Block(BaseModel):
    name: str = ''
    prefix: str = ''
    postfix: str = ''
    items: List[str]


class Config(BaseModel):
    directory: str
    blocks: List[Block]
    start_as_user: bool = True
    sleep_time: int = 1
    aw_focus_cmd: str = "aw-focus"
    window_names: str = "window_names.txt"
    enforce_aw_commit: bool = True

    class Config:
        extra = 'forbid'

    @classmethod
    def load_config(cls, config_file: str) -> Config:
        config_file = os.path.expanduser(config_file)
        with open(config_file, 'r', encoding='utf8') as f:
            config_dict = json.load(f)
        config = cls(**config_dict)
        config.directory = os.path.expanduser(config.directory)
        return config