from flask import Flask, render_template, flash, request
import requests
from requests import HTTPError
from wtforms import Form, StringField, validators, SubmitField
import json

from wtforms.validators import InputRequired
from wtforms.validators import Optional

app = Flask(__name__)
app.config['SECRET_KEY'] = '255771f2872f27567d441f2b62425'


def search_mp(product, postalcode, houseno, houseno_ext=''):

    headers = {
      'accept': 'application/json',
      'X-API-Key': config['api_key'],
    }

    params = (
      ('product', product),
      ('streetNumber', houseno),
      ('streetNumberAddition', houseno_ext),
      ('postalCode', postalcode),
      ('limit', '50'),
      ('offset', '0'),
    )

    try:
        response = requests.get(config['endpoint'], headers=headers, params=params)
        response.raise_for_status()
    except HTTPError as http_err:
        print(f'HTTP error occurred: {http_err}')
        print(response.status_code)
        print(response.request.headers)
        print(response.headers)
        print(response.text)
    except Exception as err:
        print(f'Other error occurred: {err}')
        print(response.text)
    else:
        print('Successfull GET Request')
    return response.json()

def flash_results(results):
    for mp in results['meteringPoints']:
        print(mp['specialMeteringPoint'])
        result = str(mp['address']['streetNumber']) + ';' + \
                 str(mp['address']['streetNumberAddition'] if 'streetNumberAddition' in mp['address'] else '') + ';' + \
                 str(mp['product']) + ';' + \
                 str(mp['ean']) + ';' + \
                 ('Nee' if mp['specialMeteringPoint'] is False else 'Ja') + ';' + \
                 str(mp['organisation']) + ';'
        flash(result, 'results')
    return

def flash_address(results):
    for mp in results['meteringPoints']:
        print(mp['specialMeteringPoint'])
        result = 'Gevonden resultaten voor: ' + \
                 str(mp['address']['postalCode']) + ' ' + \
                 str(mp['address']['street']) + ' ' + \
                 str(mp['address']['streetNumber']) + ' ' + \
                 str(mp['address']['city'])
        flash(result, 'info')
        break
    return

class ReusableForm(Form):
    postalcode = StringField('Postcode', [InputRequired(), validators.Length(min=6, max=6, message='Formaat 1111AA')])
    houseno = StringField('Huisnummer', [InputRequired(),validators.Length(max=5)])
    houseno_ext = StringField('Toevoeging', [Optional(), validators.Length(max=10)])
    submit = SubmitField('Zoek')

    @app.route('/', methods=['GET', 'POST'])
    def home():
        form = ReusableForm(request.form)

        if form.validate():
            print(form.errors)

        if request.method == 'POST':
            postalcode = request.form['postalcode']
            houseno = request.form['houseno']
            houseno_ext = request.form['houseno_ext']
            results = search_mp('ELK', postalcode, houseno, houseno_ext)
            if len(results['meteringPoints']) == 0:
                flash('Geen ELK aansluiting gevonden bij dit adres', 'info')
            else:
                flash_address(results)
                flash_results(results)

            results = search_mp('GAS', postalcode, houseno, houseno_ext)
            if len(results['meteringPoints']) == 0:
                flash('Geen GAS aansluiting gevonden bij dit adres', 'info')
            else:
                flash_results(results)

        return render_template('index.html', form=form)


    @app.route('/about/')
    def about():
        return render_template('about.html')


if __name__ == '__main__':
    with open('config.json') as json_data:
        config = json.load(json_data)
    app.run(debug=True, host='0.0.0.0')