from datetime import datetime

import pytest
from pydantic import ValidationError

from src.models.submission import Submission


def test_valid_submission() -> None:
    """Gültige Submission mit allen korrekten Feldern."""
    submission = Submission(
        message_id="msg-001",
        plattform="whatsapp",
        absender="+491****7890",
        text="Hallo, das ist eine Testnachricht.",
    )
    assert submission.message_id == "msg-001"
    assert submission.plattform == "whatsapp"
    assert submission.absender == "+491****7890"
    assert submission.text == "Hallo, das ist eine Testnachricht."
    assert isinstance(submission.zeitstempel, datetime)
    assert submission.status == "neu"


def test_empty_text_raises_validation_error() -> None:
    """Leerer Text wirft ValidationError (min_length=1)."""
    with pytest.raises(ValidationError):
        Submission(
            message_id="msg-002",
            plattform="telegram",
            absender="user123",
            text="",
        )


def test_text_too_long_raises_validation_error() -> None:
    """Text > 5000 Zeichen wirft ValidationError."""
    long_text = "x" * 5001
    with pytest.raises(ValidationError):
        Submission(
            message_id="msg-003",
            plattform="whatsapp",
            absender="user456",
            text=long_text,
        )


def test_zeitstempel_auto_set() -> None:
    """zeitstempel wird automatisch gesetzt (nicht None)."""
    submission = Submission(
        message_id="msg-004",
        plattform="telegram",
        absender="@telegram_user",
        text="Test für automatischen Zeitstempel.",
    )
    assert submission.zeitstempel is not None
    assert isinstance(submission.zeitstempel, datetime)