import pytest

from production_analytics.context import (
    build_enlyze_production_order,
    extract_nominal_width_m,
)

K7_ORDER_TEMPLATE = "K 7-{production_order}"


@pytest.mark.parametrize("order, expected", [
    ("12026000815", "K 7-12026000815"),
    (" \t12026000815\n", "K 7-12026000815"),
    ("00123", "K 7-00123"),
])
def test_k7_mapping(order, expected):
    assert build_enlyze_production_order(order, K7_ORDER_TEMPLATE) == expected


@pytest.mark.parametrize("order", [
    "", " \t", "K 7-12026000815", "K 7-12025000074-K 7-12025000075",
    "12025000074-12025000075", "prefix12026000815", "12026000815suffix",
    "12026 000815", "１２３", "-123",
])
def test_mapping_rejects_non_erp_identifiers(order):
    with pytest.raises(ValueError, match="ERP production order"):
        build_enlyze_production_order(order, K7_ORDER_TEMPLATE)


@pytest.mark.parametrize("template, expected", [
    ("EXAMPLE/{production_order}/finished", "EXAMPLE/00123/finished"),
    ("{production_order}", "00123"),
    ("{production_order}-example", "00123-example"),
])
def test_mapping_uses_explicit_template(template, expected):
    assert build_enlyze_production_order(" 00123 ", template) == expected


@pytest.mark.parametrize("template", [
    "", "fixed-order", "{order}", "{production_order}-{production_order}",
    "{production_order:>20}", "{production_order!r}", "{production_order}{unknown}",
    "{{production_order}}",
])
def test_mapping_rejects_invalid_template(template):
    with pytest.raises(ValueError, match="Format template"):
        build_enlyze_production_order("12026000815", template)


@pytest.mark.parametrize("description, expected", [
    ("Stex R 1501  C (PR)   5,80 x  50 m", 5.8),
    ("Stex R 401, 6,00 x 90 m", 6.0),
    ("Stex R 1501 5.80 x 50 m", 5.8),
    ("5,80x50 m", 5.8),
    ("5,80x50m", 5.8),
    ("Article 212520 grade 1501 5,80\t x\t50 m", 5.8),
    ("5,80 x 50 m coated (batch 42)", 5.8),
    ("(5,80 x 50 m), coated", 5.8),
    ("6 x 90 m", 6.0),
])
def test_width(description, expected):
    assert extract_nominal_width_m(description) == expected


@pytest.mark.parametrize("description", [
    None, "", "Stex R 1501", "5,80 m", "5,80 x 50", "5,80 x 50 cm",
    "5,80 x 50 mm", "5,80 x 50 m²", "5,80 x 50 m2", "5,80 x 50 m/min",
    "5,80 x 50 metres", "5,80,2 x 50 m", "5.80.2 x 50 m",
    "5,80 x ? m", "5,80 x 50 m or 6,00 x 90 m", "2 x 5,80 x 50 m",
    "5,80 x 50 m x 2", "0 x 50 m", "-5,80 x 50 m", "+5,80 x 50 m",
    "nan x 50 m", "inf x 50 m", "Infinity x 50 m", "1e309 x 50 m",
    "9" * 400 + " x 50 m", "5,80 x 0 m", "5,80 x -50 m", "5,80 x nan m",
    "1/5,80 x 50 m", "abc5,80 x 50 m",
])
def test_width_fails_safely(description):
    assert extract_nominal_width_m(description) is None