import sys
from pathlib import Path

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

from app.services.invoice2data_service import Invoice2DataService


def test_globalconnect_parser_extracts_contextual_lines():
    service = Invoice2DataService()
    sample_text = """
GlobalConnect A/S
Kundenr. D30190
Fakturanr. 3016392
Bilagsdato 1. januar 2026
Forfaldsdato 1. april 2026
Kontrakt: 20292
Vedr: DSL-EB722388
Metalbuen 26 2750 Ballerup
Slutkunde: MALERFIRMAET GERT JENSEN ApS VOIP
Periode: 01-01-2026 - 31-03-2026
20480/2048 Kbps ADSL forbindelse 3 Stk. 140,00 420,00
Kontrakt: 20140005-00
Vedr: IP adresser
152.115.84.232/29 (NKA-008214)
Industrivej 7 2605 Brondby
IPv4 IP-adresser 3 Stk. 64,00 192,00
I alt DKK ekskl. moms 612,00
25% moms 153,00
I alt DKK inkl. moms 765,00
SE/CVR-nr. 26759722
29522790
""".strip()

    extracted = service.extract_with_template(sample_text, "dk.globalconnect")

    assert extracted["invoice_number"] == 3016392
    assert extracted["invoice_date"] == "2026-01-01"
    assert extracted["due_date"] == "2026-04-01"
    assert extracted["customer_reference"] == "D30190"
    assert extracted["vendor_vat"] == "26759722"
    assert extracted["amount_total"] == 765.0
    assert len(extracted["lines"]) == 2

    first_line = extracted["lines"][0]
    assert first_line["provider_reference"] == "DSL-EB722388"
    assert first_line["contract_number"] == "20292"
    assert first_line["end_customer_name"] == "MALERFIRMAET GERT JENSEN ApS VOIP"
    assert first_line["period_start"] == "2026-01-01"
    assert first_line["period_end"] == "2026-03-31"

    second_line = extracted["lines"][1]
    assert second_line["ip_address"] == "152.115.84.232/29"
    assert second_line["provider_reference"] == "NKA-008214"
    assert second_line["service_address"] == "Industrivej 7, 2605 Brondby"


def test_validation_details_are_added_on_subtotal_mismatch():
    service = Invoice2DataService()
    extracted = {
        "total_amount": 1000.0,
        "vat_amount": 200.0,
        "lines": [
            {"line_total": 500.0},
            {"line_total": 100.0},
        ],
    }

    service._validate_amounts(extracted)

    assert "_validation_warning" in extracted
    assert extracted["_validation_details"]["line_sum"] == 600.0
    assert extracted["_validation_details"]["subtotal"] == 800.0
    assert extracted["_validation_details"]["difference"] == 200.0
    assert extracted["_validation_details"]["subtotal_matches"] is False


def test_globalconnect_parser_handles_split_address_and_mpls_multiline_context():
    service = Invoice2DataService()
    sample_text = """
GlobalConnect A/S
Kundenr. D30190
Fakturanr. 3018657
Bilagsdato 1. januar 2026
Forfaldsdato 1. april 2026
NKA020900
Rydagervej 27
2620 Albertslund
1 Gbps fiberforbindelse 3 Måneder 1.650,00 4.950,00
MPLS VPN (layer 3) Serviceaftale Døgn 3 Måneder
1 Gbps Flatrate internet
IPv4 IP-adresser 3 Stk. 64,00 192,00
87.116.1.200/29 (NKA-020900)
Rydagervej 27
2620 Albertslund
I alt DKK ekskl. moms 5.142,00
25% moms 1.285,50
I alt DKK inkl. moms 6.427,50
SE/CVR-nr. 26759722
29522790
""".strip()

    extracted = service.extract_with_template(sample_text, "dk.globalconnect")

    assert len(extracted["lines"]) == 2

    connection_line = extracted["lines"][0]
    assert connection_line["provider_reference"] == "NKA020900"
    assert connection_line["service_address"] == "Rydagervej 27, 2620 Albertslund"
    assert "MPLS VPN" in connection_line["description"]
    assert "1 Gbps Flatrate internet" in connection_line["description"]

    ip_line = extracted["lines"][1]
    assert ip_line["provider_reference"] == "NKA-020900"
    assert ip_line["ip_address"] == "87.116.1.200/29"
    assert ip_line["service_address"] == "Rydagervej 27, 2620 Albertslund"