from contextlib import contextmanager
from unittest.mock import MagicMock
from decimal import Decimal
import pytest
from fastapi import HTTPException
from app.workflows import resources

def test_card_rejects_monthly_price_before_any_write():
    payload=resources.ResourceUpdate(workflow_coverage={},monthly_price=Decimal('10'))
    with pytest.raises(HTTPException) as error: resources.update_resource('card',1,payload,{'id':4})
    assert error.value.status_code==422

def test_inactive_tag_rejected_without_mutating_resource(monkeypatch):
    cursor=MagicMock()
    cursor.fetchone.return_value={'id':1,'customer_id':24}
    cursor.fetchall.return_value=[]
    @contextmanager
    def transaction(): yield cursor
    monkeypatch.setattr(resources,'transaction',transaction)
    payload=resources.ResourceUpdate(workflow_coverage={'tag_ids':[7]})
    with pytest.raises(HTTPException) as error: resources.update_resource('agreement',1,payload,{'id':4})
    assert error.value.status_code==422
    assert all(not call.args[0].startswith(('INSERT','UPDATE','DELETE')) for call in cursor.execute.call_args_list)

def test_resource_audit_and_explicit_null_monthly_price(monkeypatch):
    cursor=MagicMock()
    original={'id':1,'customer_id':24,'workflow_coverage':{},'monthly_price':Decimal('99')}
    updated=dict(original,monthly_price=None,workflow_coverage={'tag_ids':[],'excluded_tag_ids':[],'include_descendants':False})
    cursor.fetchone.side_effect=[original,original,updated]
    cursor.fetchall.return_value=[]
    @contextmanager
    def transaction(): yield cursor
    monkeypatch.setattr(resources,'transaction',transaction)
    result=resources.update_resource('agreement',1,resources.ResourceUpdate(workflow_coverage={},monthly_price=None),{'id':4})
    assert result['monthly_price'] is None
    update=next(call for call in cursor.execute.call_args_list if call.args[0].startswith('UPDATE customer_fixed'))
    assert 'monthly_price=%s' in update.args[0]
    assert update.args[1][1] is None
    assert update.args[1][0].adapted['auto_billing'] is True
    assert any('INSERT INTO bmc_workflow_resource_history' in call.args[0] for call in cursor.execute.call_args_list)

def test_customer_card_coverage_saves_profile_and_audit(monkeypatch):
    cursor=MagicMock()
    cursor.fetchone.side_effect=[{'id':24}, None]
    cursor.fetchall.return_value=[]
    @contextmanager
    def transaction(): yield cursor
    monkeypatch.setattr(resources,'transaction',transaction)
    result=resources.update_customer_card_coverage(24,resources.Coverage(),{'id':4})
    assert result['workflow_coverage']['auto_billing'] is True
    calls=[c.args for c in cursor.execute.call_args_list]
    assert any('INSERT INTO bmc_workflow_customer_card_coverage' in c[0] and c[1][0]==24 for c in calls)
    assert any('INSERT INTO bmc_workflow_resource_history' in c[0] and c[1][0]=='customer_card' for c in calls)
    assert not any('UPDATE tticket_prepaid_cards' in c[0] for c in calls)


def test_customer_card_coverage_rejects_inactive_tags(monkeypatch):
    cursor=MagicMock()
    cursor.fetchone.return_value={'id':24}
    cursor.fetchall.return_value=[]
    @contextmanager
    def transaction(): yield cursor
    monkeypatch.setattr(resources,'transaction',transaction)
    with pytest.raises(HTTPException) as error:
        resources.update_customer_card_coverage(24,resources.Coverage(tag_ids=[9]),{'id':4})
    assert error.value.status_code==422
    assert not any(c.args[0].startswith(('INSERT','UPDATE')) for c in cursor.execute.call_args_list)