"""Tests for data mapping functions (mappings.py)."""

from unittest.mock import Mock, patch

import pytest
from cteward_ng.mappings import (
    none_mapper,
    contract_mapper,
    contractlist_mapper,
    debit_mapper,
    debitlist_mapper,
    contributions_mapper,
    member_mapper,
    memo_mapper,
    memberlist_mapper,
    memberlist_to_ldapcsv_mapper,
    withdrawal_mapper,
    withdrawallist_mapper,
)


# ── helpers ───────────────────────────────────────────────────────

def _ctx(data=None, config_base='', path='/test/', flags=None):
    req = Mock()
    req.path = path
    return {
        'data': data or [],
        'config': {'base': config_base},
        'request': req,
        'flags': flags or [],
    }


# ── none_mapper ─────────────────────────────────────────────────

class TestNoneMapper:
    def test_identity(self):
        ctx = _ctx(data=[{'x': 1}])
        result = none_mapper(ctx)
        assert result['data'] == [{'x': 1}]


# ── contract mappers ─────────────────────────────────────────────

class TestContractMapper:
    def test_single_contract(self):
        ctx = _ctx(data=[{
            'VertragNr': '42',
            'ArtName': 'Ehrenmitglied',
            'Sollstellung': 'monatlich',
            'Betrag': 15.0,
            'VertragBegin': '2020-01-01T00:00:00Z',
            'VerwZw1': 'Mahnung',
            'VerwZw2': '',
        }], config_base='https://api.example.com/')
        contract_mapper(ctx)
        assert ctx['data']['Vertragsnummer'] == 42
        assert ctx['data']['Vertragsart'] == 'Ehrenmitglied'
        assert 'Mahnung' in ctx['data']['Verwendungszweck']

    def test_empty_data(self):
        ctx = _ctx(data=[])
        contract_mapper(ctx)
        assert ctx['data'] == {}


class TestContractlistMapper:
    def test_list(self):
        ctx = _ctx(data=[{
            'VertragNr': '1', 'ArtName': 'A', 'Sollstellung': 'x',
            'Betrag': 10, 'VertragBegin': '2020-01-01T00:00:00Z',
        }], config_base='https://api.example.com/')
        contractlist_mapper(ctx)
        assert ctx['data']['count'] == 1
        assert ctx['data']['next'] is None


# ── debit mappers ───────────────────────────────────────────────

class TestDebitMapper:
    def test_single_debit(self):
        ctx = _ctx(data=[{
            'VertragNr': '1', 'ArtName': 'Soll', 'Jahr': 2023,
            'Monat': 6, 'Datum': '2023-06-01T00:00:00Z',
            'Betrag': 25, 'Bezahlt': 25, 'Offen': 0, 'GUID': 'abc',
        }], config_base='https://api.example.com/', path='/debit/')
        debit_mapper(ctx)
        assert ctx['data']['Vertragsnummer'] == 1
        assert ctx['data']['Betrag'] == 25

    def test_zeroed_fields(self):
        ctx = _ctx(data=[{
            'VertragNr': '1', 'ArtName': 'Soll', 'Jahr': 2023,
            'Monat': 6, 'Datum': '2023-06-01T00:00:00Z',
            'Betrag': None, 'Bezahlt': None, 'Offen': None,
        }])
        debit_mapper(ctx)
        assert ctx['data']['Betrag'] == 0


# ── contributions mapper ───────────────────────────────────────

class TestContributionsMapper:
    def test_aggregation(self):
        ctx = _ctx(data=[{
            'VertragNr': '1', 'ArtName': 'Ehren', 'Jahr': 2023,
            'Betrag': 100, 'Bezahlt': 80, 'Offen': 20,
        }, {
            'VertragNr': '1', 'ArtName': 'Ehren', 'Jahr': 2024,
            'Betrag': 120, 'Bezahlt': 60, 'Offen': 60,
        }], config_base='https://api.example.com/')
        contributions_mapper(ctx)
        assert ctx['data']['total']['billed'] == 220
        assert ctx['data']['total']['paid'] == 140
        assert len(ctx['data']['contracts']) == 1
        assert '2023' in ctx['data']['years']
        assert '2024' in ctx['data']['years']


# ── member mappers ─────────────────────────────────────────────

class TestMemberMapper:
    def test_full_member(self):
        ctx = _ctx(data=[{
            'Eintritt': '2020-01-15T00:00:00Z',
            'Kontaktwoher': 'Alice, Bob',
            'Vorname': 'Max',
            'Nachname': 'Mustermann',
            'Kurzname': 'maxm',
            'Kennung3': 'crew',
            'AdrNr': 42,
            'MITGLNR': '1001',
            'Zahlungsart': 'L',
            'Betreuung': 'MÄNNLICH',
        }], config_base='https://api.example.com/',
                   path='/member/maxm/', flags=['_board_'])
        member_mapper(ctx)
        d = ctx['data']
        assert d['Vorname'] == 'Max'
        assert d['Email'] == 'maxm@c-base.org'
        assert d['Zahlungsart'] == 'Lastschrift'
        assert d['Geschlecht'] == 'M'
        assert d['Mitgliedsnummer'] == 1001
        assert 'memo' in d  # board-only

    def test_no_board_no_memo(self):
        ctx = _ctx(data=[{
            'Eintritt': '2020-01-01T00:00:00Z',
            'Kontaktwoher': '', 'Kurzname': 'x',
            'Kennung3': 'crew',
        }], flags=[])
        member_mapper(ctx)
        assert 'memo' not in ctx['data']


class TestMemberlistMapper:
    def test_list(self):
        ctx = _ctx(data=[{
            'Kurzname': 'alice', 'AdrNr': 1, 'Kennung3': 'crew',
            'Eintritt': '2020-01-01T00:00:00Z', 'Kontaktwoher': '',
            'Vorname': 'A', 'Nachname': 'B',
        }])
        memberlist_mapper(ctx)
        assert ctx['data']['count'] == 1
        assert ctx['data']['results'][0]['Crewname'] == 'alice'

    def test_x_prefix_no_url(self):
        ctx = _ctx(data=[{
            'Kurzname': 'Xdisabled', 'AdrNr': 2, 'Kennung3': 'crew',
            'Eintritt': '', 'Kontaktwoher': '',
        }])
        memberlist_mapper(ctx)
        assert 'url' not in ctx['data']['results'][0]


class TestMemberListToLdapCsv:
    def test_csv_shape(self):
        ctx = _ctx(data=[{
            'Kurzname': 'alice', 'Nachname': 'A', 'Vorname': 'B',
            'Kennung3': 'crew', 'Eintritt': '2020-01-01T00:00:00Z',
            'Telefon3': 'alice@mail.org', 'Kontaktwoher': 'Bob',
        }])
        memberlist_to_ldapcsv_mapper(ctx)
        assert len(ctx['data']) == 1
        row = ctx['data'][0]
        assert 'externe E-Mail' in row


# ── memo mapper ────────────────────────────────────────────────

class TestMemoMapper:
    def test_basic(self):
        ctx = _ctx(data=[{
            'Eintritt': '2020-01-01T00:00:00Z',
            'Memotext': '{\\rtf plain text}',
            'Benutzer': 'admin',
        }])
        memo_mapper(ctx)
        assert ctx['data']['Editor'] == 'admin'

    def test_no_data(self):
        ctx = _ctx(data=[])
        memo_mapper(ctx)
        assert ctx['data'] == {}


# ── withdrawal mappers ───────────────────────────────────────

class TestWithdrawalMapper:
    def test_single(self):
        ctx = _ctx(data=[{
            'VertragNr': '5', 'Adr_BLZ': '1234', 'Adr_Konto': '5678',
            'IBAN': '', 'BIC': '', 'MandatsNr': 'MAND1',
            'Betrag_EU': 50, 'Jahr': 2023, 'Zeitraum': 3,
            'ErstDatum': '2023-03-15T00:00:00Z',
        }], config_base='https://api.example.com/', path='/withdrawal/')
        withdrawal_mapper(ctx)
        assert ctx['data']['Vertragsnummer'] == 5
        assert ctx['data']['BLZ'] == '1234'

    def test_list(self):
        ctx = _ctx(data=[{
            'VertragNr': '1', 'Adr_BLZ': '', 'Adr_Konto': '',
            'IBAN': '', 'BIC': '', 'MandatsNr': '',
            'Betrag_EU': 0, 'Jahr': 2023, 'Zeitraum': 1,
            'ErstDatum': '',
        }])
        withdrawallist_mapper(ctx)
        assert ctx['data']['count'] == 1