"""Schneller Selbsttest der Kern-Engine (ohne Framework, ohne pytest).

Aufruf: python tests/test_engine.py
"""
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).parent.parent))

from app import engine

SCHEMA = {
    "slug": "test-stationen",
    "title": "Test-Stationen",
    "columns": [
        {"key": "nr", "label": "Nr.", "type": "number"},
        {"key": "titel", "label": "Titel", "type": "text"},
        {"key": "link", "label": "Link", "type": "url"},
        {"key": "bewertung", "label": "Bewertung", "type": "rating_5"},
    ],
}


def test_slugify():
    assert engine.slugify("Projekttage Straßenfotografie 2026!") == "projekttage-strassenfotografie-2026"
    assert engine.column_key("Nr.") == "nr"


def test_parse_semikolon_bom():
    raw = "Nr.;Titel;Link;Bewertung\r\n1;Kamera hält;https://example.org/a;4\r\n".encode("utf-8-sig")
    header, rows = engine.parse_csv(raw)
    assert header == ["Nr.", "Titel", "Link", "Bewertung"]
    assert rows == [["1", "Kamera hält", "https://example.org/a", "4"]]


def test_parse_cp1252_komma():
    raw = "Nr.,Titel,Link,Bewertung\n2,Straße üben,https://example.org/b,5\n".encode("cp1252")
    header, rows = engine.parse_csv(raw)
    assert rows[0][1] == "Straße üben"


def test_validate_ok_und_fehler():
    header = ["Nr.", "Titel", "Link", "Bewertung"]
    records, errors, warnings = engine.validate_and_map(
        SCHEMA, header, [["1", "A", "https://example.org", "3"], ["2", "B", "", ""]]
    )
    assert not errors and len(records) == 2

    _, errors, _ = engine.validate_and_map(
        SCHEMA, header, [["x", "A", "example.org", "7"]]
    )
    assert len(errors) == 3  # Zahl, URL, Bewertung

    _, errors, _ = engine.validate_and_map(SCHEMA, ["Nr.", "Titel"], [])
    assert any("fehlt" in e for e in errors)


def test_warnung_unbekannte_spalte():
    header = ["Nr.", "Titel", "Link", "Bewertung", "Notizen"]
    _, errors, warnings = engine.validate_and_map(SCHEMA, header, [["1", "A", "", ""]])
    assert not errors
    assert any("Notizen" in w for w in warnings)


def test_render():
    records, errors, _ = engine.validate_and_map(
        SCHEMA,
        ["Nr.", "Titel", "Link", "Bewertung"],
        [["1", "Goldener Schnitt", "https://youtu.be/abc123", "4"]],
    )
    assert not errors
    html = engine.render_page(SCHEMA, records, version_label="2026-07-05 12:00")
    assert "<svg" in html                      # QR-Code eingebettet
    assert "Test-Stationen" in html
    assert "★★★★☆" in html
    assert "https://youtu.be/abc123" in html


def test_template_csv():
    raw = engine.template_csv(SCHEMA)
    assert raw.startswith("".encode("utf-8"))  # BOM fuer Excel
    assert b"Nr.;Titel;Link;Bewertung" in raw


if __name__ == "__main__":
    failed = 0
    for name, fn in sorted(globals().items()):
        if name.startswith("test_") and callable(fn):
            try:
                fn()
                print(f"OK    {name}")
            except AssertionError as exc:
                failed += 1
                print(f"FAIL  {name}: {exc}")
    sys.exit(1 if failed else 0)