from typing import Dict

from .param import Param


class MultiParam(Param):
    def __call__(self, args: Dict) -> Dict:
        out = {}
        for a, v in args.items():
            if a.startswith(self.name):
                if self.valid(v):
                    if v is None:
                        out[a] = self.default_value
                    else:
                        out[a] = v
                else:
                    raise RuntimeError(f"Parameter {a} has invalid value {v}")
        if self.required and len(out) == 0:
            raise RuntimeError(f"Parameter(s) {self.name}* missing")
        return out