#!/usr/bin/python3

import requests
import datetime
from Cheetah.Template import Template

class ResourceNotFoundException(Exception): pass

def getJson(url):
    resp = requests.get(url)
    if resp.status_code != 200:
        raise ResourceNotFoundException("URL: {}, Code: {}".format(url, resp.status_code))
    return resp.json()


BASE_URL = "http://172.16.10.29:5000/hv"
URL_MIETERS_ACTIVE = "{base}/mieters/active"
URL_SALDO_BY_MIETER = "{base}/mieter/{mieterId}/saldo/{year}"
REPORT_THRESHOLD = 0.5

TEMPLATE_FILE = "report.tmpl"
CURRENT_YEAR = datetime.datetime.now().year


try:
    activeMieters = getJson(URL_MIETERS_ACTIVE.format(base=BASE_URL))
    mieters = [ { 'vorname': x['vorname'], 'nachname': x['nachname'], 'id': x['id'] } for x in activeMieters ]
    mietersToReport = []

    for mieter in mieters:
        saldoByMieter = getJson(URL_SALDO_BY_MIETER.format(base=BASE_URL, mieterId=mieter['id'], year=CURRENT_YEAR))

        if abs(saldoByMieter['saldo']) > REPORT_THRESHOLD:
            mietersToReport.append({
                'vorname': mieter['vorname'],
                'nachname': mieter['nachname'],
                'saldo': "{:.2f}".format(saldoByMieter['saldo'])
            })
    if mietersToReport:
        params = { 'mietersToReport': mietersToReport }
        report = Template(file=TEMPLATE_FILE, searchList=[ params ])
        print(report)
except Exception as e:
    print("ERROR: {}".format(e))