'''
This module contains the functions to preform calculations using ohms law
'''


def calculate_voltage(resistance, amps):
    '''Calculates the voltage in a circuit given the resistance and amperage

    :param resistance: Resistance value in ohms of wire/circuit
    :param amps: Current flowing through wire/circuit
    :return: Voltage
    '''
    return amps * resistance


def calculate_current(volts, resistance):
    '''Calculates the current in a circuit given the voltage and resistance

    :param volts: Voltage on wire
    :param resistance: Resistance value in ohms of wire/circuit
    :return: Current in amps
    '''
    return volts / resistance


def calculate_resistance(volts, amps):
    '''Calculates the resistance in a circuit given the voltage and amperage

    :param volts: Voltage on wire/circuit
    :param amps:  Amps on wire/circuit
    :return: Resistance of wire/circuit
    '''
    return volts / amps

# ======
# The functions below are for calculating the missing element in a circuit between volts, watts, and amps
# with any 2 of those values the third can be calculated, use the functions below for thsoe calculations


def watts_from_volts_amps(volts, amps):
    '''Calculates the wattage of a circuit given the circuits voltage and amperage

    :param volts: Volts in circuit
    :param amps:  Amps in circuit
    :return: Watts in circuit
    '''
    return amps * volts


def amps_from_volts_watts(volts, watts):
    '''Calculates the amerage of a circuit given the circuits voltage and wattage

    :param volts: Volts in circuit
    :param watts:  Watts in circuit
    :return: Amps in circuit
    '''
    return watts / volts


def volts_from_amps_watts(amps, watts):
    '''Calculates the voltage of a circuit given the known amperage and wattage

    :param amps: Amps in circuit
    :param watts: Watts in circuit
    :return: Volts in circuit
    '''

    return watts / amps

if __name__ == '__main__':
    print(calculate_resistance(volts=9, amps=1))
    print(watts_from_volts_amps(volts=5, amps=10))
    print(amps_from_volts_watts(volts=5, watts=50))
    print(volts_from_amps_watts(amps=10, watts=50))