Property List Helper Methods

def has_property(propertyList, keyName):
    if not propertyList:
        return False
    for propertyItem in propertyList:
        if 'keyName' in propertyItem and propertyItem['keyName'] == keyName:
            return True
    return False

def has_property_with_value(propertyList, keyName, dataValue):
    propertyItem = get_property(propertyList, keyName);
    if propertyItem and 'dataValue' in propertyItem and propertyItem['dataValue'] == dataValue:
        return True
    return False

def get_property(propertyList, keyName):
    if not propertyList:
        return None
    for propertyItem in propertyList:
        if 'keyName' in propertyItem and propertyItem['keyName'] == keyName:
            return propertyItem
    return None

def get_property_for_scenario(propertyList, keyName, scenarioName):
    if not propertyList:
        return None
    for propertyItem in propertyList:
        if 'keyName' in propertyItem and propertyItem['keyName'] == keyName:
            if 'scenarioName' in propertyItem and propertyItem['scenarioName'] == scenarioName:
            	return propertyItem
    return None

def _calc_tariff_comparison(tariffComparisonRequest):
    eligibilityProperties = ['isCARECustomer', 'isFERACustomer', 'hasElectricVehicle']
    extraParams = {}
    for p in eligibilityProperties:
        if has_property_with_value(tariffComparisonRequest, p, True):
            # Include explicitly true. e.g. applicability=eq(isCARECustomer,true)
            if 'applicability' in extraParams:
                extraParams['applicability'].append("eq(%s,true)" % p)
            else:
                extraParams['applicability'] = ["eq(%s,true)" % p]
        else:
            # Include explicitly false or missing, e.g. filterByApplicability=true&applicabilityFilters[solarPvEligible]=false
            extraParams['filterByApplicability'] = True
            extraParams['applicabilityFilters[%s]' % p] = False
    print extraParams
        
testPropertyList = []

print 'empty should be false %s' % has_property(testPropertyList, 'hello')
print 'empty with value should be false %s' % has_property_with_value(testPropertyList, 'consumption', 120)

testPropertyList.append({
                    'keyName': 'consumption',
                    'dataValue': 100
                })

print 'mismatch should be false %s' % has_property(testPropertyList, 'hello')
print 'mismatch value should be false %s' % has_property_with_value(testPropertyList, 'hello', 'world')
print 'match should be false %s' % has_property(testPropertyList, 'consumption')

find = get_property(testPropertyList, 'consumption')
print find

testPropertyList.append({
                    'keyName': 'masterTariffId',
                    'dataValue': 543,
                    'scenarioName': 'current'
                })

findS = get_property_for_scenario(testPropertyList, 'masterTariffId', 'current')
print findS

findN = get_property_for_scenario(testPropertyList, 'notInIt', 'current')
print not findN

print 'match value should be false %s' % has_property_with_value(testPropertyList, 'consumption', 120)
print 'match value should be true %s' % has_property_with_value(testPropertyList, 'consumption', 100)

_calc_tariff_comparison(testPropertyList)

testPropertyList.append({
                    'keyName': 'isFERACustomer',
                    'dataValue': True
                })

_calc_tariff_comparison(testPropertyList)

testPropertyList.append({
                    'keyName': 'hasElectricVehicle',
                    'dataValue': True
                })

_calc_tariff_comparison(testPropertyList)

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