import yaml
import warnings

from pdf_extract_kit.registry.registry import TASK_REGISTRY


def load_config(config_path):
    if config_path is None:
        warnings.warn("Configuration path is None. Please provide a valid configuration file path.")
        return None

    with open(config_path, 'r') as file:
        config = yaml.safe_load(file)
    return config


def initialize_tasks_and_models(config):
    task_instances = {}

    for task_name, task_config in config['tasks'].items():
        # 从 config 中读取 type 字段作为注册器查找键
        task_type = task_config.get("type")
        if task_type is None:
            raise ValueError(f"Task '{task_name}' missing required 'type' field in config.")

        # 查找注册的类
        TaskClass = TASK_REGISTRY.get(task_type)
        if TaskClass is None:
            raise ValueError(f"Task type '{task_type}' not found in TASK_REGISTRY.")

        # 其他字段作为初始化参数
        kwargs = {k: v for k, v in task_config.items() if k != "type"}
        task_instance = TaskClass(**kwargs)

        task_instances[task_name] = task_instance

    return task_instances