from bottle import get, post, request, run, route
from power_calcs import calculate

voltage_limit = 11.5

@get('/')
def main():
    return '''
        <form action="/" method="post">
            Cable Type: <input name="cabletype" type="text" />
            Assumed Load: <input name="assumed_load" type="number" />
            Length: <input name="length" type="number" />
            <input value="Calculate" type="submit" />
        </form>
    '''

@post('/')
def do_main():
    drop, total_drop, max_length, pfc = calculate(request.forms.get('cabletype'), float(request.forms.get('assumed_load')), int(request.forms.get('length')))
    page = ""
    page += f"Voltage Drop (per ampere per metre): {drop}mV/A/m<br>"
    page += f"Total drop at {request.forms.get('assumed_load')}A over {request.forms.get('length')}m is: {total_drop:.1f}V<br>"
    page += f"Maximum length of cable at this load: {int(max_length)}m<br>"
    page += f"Estimated PFC is {pfc:.1f}A<br>"

    if total_drop > voltage_limit:
        page += "<span style='color: red'>FAILED: VOLTAGE DROP TOO HIGH</span>"
    return page

run(host='localhost', port=8080, debug=True)