# Part of Hibou Suite Professional. See LICENSE_PROFESSIONAL file for full copyright and licensing details.

def _general_rate(payslip, wage, ytd_wage, wage_base=None, wage_start=None, rate=None):
    """
    Function parameters:
    wage_base, wage_start, rate can either be strings (rule_parameters) or floats
    :return: result, result_rate(wage, percent)
    """

    # Resolve parameters.  On exception, return (probably missing a year, would rather not have exception)
    if wage_base and isinstance(wage_base, str):
        try:
            wage_base = payslip.rule_parameter(wage_base)
        except (KeyError, UserError):
            return 0.0, 0.0

    if wage_start and isinstance(wage_start, str):
        try:
            wage_start = payslip.rule_parameter(wage_start)
        except (KeyError, UserError):
            return 0.0, 0.0

    if rate and isinstance(rate, str):
        try:
            rate = payslip.rule_parameter(rate)
        except (KeyError, UserError):
            return 0.0, 0.0

    if not rate:
        return 0.0, 0.0
    else:
        # Rate assumed positive percentage!
        rate = -rate

    if wage_base:
        remaining = wage_base - ytd_wage
        if remaining < 0.0:
            result = 0.0
        elif remaining < wage:
            result = remaining
        else:
            result = wage

        # _logger.warn('  wage_base method result: ' + str(result) + ' rate: ' + str(rate))
        return result, rate
    if wage_start:
        if ytd_wage >= wage_start:
            # _logger.warn('  wage_start 1 method result: ' + str(wage) + ' rate: ' + str(rate))
            return wage, rate
        if ytd_wage + wage <= wage_start:
            # _logger.warn('  wage_start 2 method result: ' + str(0.0) + ' rate: ' + str(0.0))
            return 0.0, 0.0
        # _logger.warn('  wage_start 3 method result: ' + str((wage - (wage_start - ytd_wage))) + ' rate: ' + str(rate))
        return (wage - (wage_start - ytd_wage)), rate

    # If the wage doesn't have a start or a base
    # _logger.warn('  basic result: ' + str(wage) + ' rate: ' + str(rate))
    return wage, rate