"""Unit tests for the pure helpers added to downloads.py."""
from types import SimpleNamespace

from app.tasks.downloads import (
    _effective_patreon_url,
    _extract_vanity_from_url,
    _looks_like_campaign_id_failure,
)


# --- _effective_patreon_url -------------------------------------------------

def test_effective_url_patreon_with_cached_id_uses_id_url():
    assert (
        _effective_patreon_url("patreon", "https://www.patreon.com/mstsu", {"patreon_campaign_id": "12345"})
        == "https://www.patreon.com/id:12345"
    )


def test_effective_url_patreon_without_cached_id_uses_original():
    assert (
        _effective_patreon_url("patreon", "https://www.patreon.com/mstsu", {})
        == "https://www.patreon.com/mstsu"
    )


def test_effective_url_patreon_none_metadata_uses_original():
    assert (
        _effective_patreon_url("patreon", "https://www.patreon.com/mstsu", None)
        == "https://www.patreon.com/mstsu"
    )


def test_effective_url_non_patreon_ignores_cached_id():
    # Even if campaign_id somehow got set on a non-patreon source, don't rewrite.
    assert (
        _effective_patreon_url("subscribestar", "https://subscribestar.adult/foo", {"patreon_campaign_id": "12345"})
        == "https://subscribestar.adult/foo"
    )


# --- _looks_like_campaign_id_failure ---------------------------------------

def _result(stdout="", stderr=""):
    return SimpleNamespace(stdout=stdout, stderr=stderr)


def test_failure_pattern_in_stderr():
    assert _looks_like_campaign_id_failure(
        _result(stderr="[patreon][error] Failed to extract campaign ID")
    ) is True


def test_failure_pattern_in_stdout():
    assert _looks_like_campaign_id_failure(
        _result(stdout="something Failed to extract campaign ID something")
    ) is True


def test_failure_pattern_case_insensitive():
    assert _looks_like_campaign_id_failure(
        _result(stderr="FAILED TO EXTRACT CAMPAIGN ID")
    ) is True


def test_failure_pattern_absent():
    assert _looks_like_campaign_id_failure(
        _result(stderr="HTTP 401 Unauthorized")
    ) is False


def test_failure_pattern_empty():
    assert _looks_like_campaign_id_failure(_result()) is False


def test_failure_pattern_none_streams():
    assert _looks_like_campaign_id_failure(
        SimpleNamespace(stdout=None, stderr=None)
    ) is False


# --- _extract_vanity_from_url ----------------------------------------------

def test_vanity_plain_patreon_url():
    assert _extract_vanity_from_url("https://www.patreon.com/mstsu") == "mstsu"


def test_vanity_with_c_prefix():
    assert _extract_vanity_from_url("https://www.patreon.com/c/mstsu/posts") == "mstsu"


def test_vanity_with_c_prefix_no_trailing_path():
    assert _extract_vanity_from_url("https://www.patreon.com/c/mstsu") == "mstsu"


def test_vanity_without_www():
    assert _extract_vanity_from_url("https://patreon.com/mstsu") == "mstsu"


def test_vanity_http_scheme():
    assert _extract_vanity_from_url("http://www.patreon.com/mstsu") == "mstsu"


def test_vanity_id_url_returns_none():
    assert _extract_vanity_from_url("https://www.patreon.com/id:12345") is None


def test_vanity_bare_domain_returns_none():
    assert _extract_vanity_from_url("https://www.patreon.com/") is None


def test_vanity_unrelated_url_returns_none():
    assert _extract_vanity_from_url("https://subscribestar.adult/mstsu") is None


def test_vanity_ignores_trailing_query_and_hash():
    assert _extract_vanity_from_url("https://www.patreon.com/mstsu?x=1") == "mstsu"
    assert _extract_vanity_from_url("https://www.patreon.com/mstsu#anchor") == "mstsu"