from dataclasses import dataclass
import json
from typing import Iterable


@dataclass
class Poem:
    name: str
    authors: str | list[str]
    body: str


def load_data() -> list[Poem]:
    with open("task1_poems.json", "r") as file:
        return [
            Poem(**obj)
            for obj in json.load(file)
        ]

def ask_author_to_search() -> str:
    return input("Имя автора для поиска: ")

def search_by_author(poems: list[Poem], author: str) -> list[Poem]:
    return [
        poem
        for poem in poems
        if isinstance(poem.authors, str) and poem.authors == author\
            or author in poem.authors
    ]

def get_sorted_poems(poems: list[Poem]) -> list[Poem]:
    return sorted(poems, key=lambda poem: len(poem.body))

def print_poems(poems: Iterable[Poem]) -> None:
    for poem in poems:
        authors: str = poem.authors if isinstance(poem.authors, str) \
            else ", ".join(poem.authors)
        print(f"{authors} - {poem.name} ({len(poem.body)} символов)")

poems = load_data()
author: str = ask_author_to_search()
poems = search_by_author(poems, author)
poems = get_sorted_poems(poems)
print_poems(poems)