from __future__ import annotations

from collections.abc import Callable, Iterable
from pathlib import Path
from typing import Any

from fastapi import HTTPException

from api_server.html5_ai_structure import (
    render_html5_ai_structure_error,
    render_html5_ai_structure_page,
    render_html5_ai_structure_result,
)
from api_server.html5_forms import form_value


def html5_ai_structure_page(
    *,
    project_id: str,
    project_summaries: Callable[[], Iterable[object]],
) -> str:
    return render_html5_ai_structure_page(project_id=project_id, projects=project_summaries())


def html5_ai_structure_run(
    *,
    project_id: str,
    form: dict[str, list[str]],
    prepare: Callable[..., dict[str, Any]],
) -> str:
    effective_project_id = form_value(form, "project_id") or project_id
    input_path = form_value(form, "input_path")
    output_path = form_value(form, "output_path")
    if not input_path:
        return render_html5_ai_structure_error("Заполните входную папку с .cf/.cfe или выгрузкой 1С.")
    if not output_path:
        return render_html5_ai_structure_error("Заполните папку результата.")
    try:
        result = prepare(project_id=effective_project_id, input_path=Path(input_path), output_path=Path(output_path))
    except FileNotFoundError as error:
        return render_html5_ai_structure_error(str(error))
    except PermissionError as error:
        return render_html5_ai_structure_error(f"Нет доступа к папке: {error}")
    except OSError as error:
        return render_html5_ai_structure_error(f"Ошибка файловой системы: {error}")
    return render_html5_ai_structure_result(result)