from abc import ABC, abstractmethod
from pandas import DataFrame
import re
import pickle

class ClassicSearchBackend(ABC):
    @abstractmethod
    def submit(self, query:str)->DataFrame:
        pass
    @abstractmethod
    def get_num_items(self)->int:
        pass

class ImplClassicSearchBackend(ClassicSearchBackend):
    def __init__(self):
        super().__init__()
        with open("./himitsudogu_db.pkl", "rb") as file:
            self.himitsudogu_db: dict = pickle.load(file)
    def submit(self, query: str) -> DataFrame:
        pattern = ".*"+query+".*"
        output = DataFrame(columns=["名前","説明"])
        for i,(name,description) in enumerate(zip(
            self.himitsudogu_db["name_s"],self.himitsudogu_db["description_s"]
            )):
            if re.match(pattern,name+description):
                output.loc[i] = [
                    name,
                    description
                ]
        return output
    def get_num_items(self)->int:
        return len(self.himitsudogu_db["name_s"])