from django.http import HttpResponseRedirect
from django.shortcuts import render
from .models import Questionnaire, QuestionnaireResponse, QuestionnaireStorage
from django.conf import settings
from django.contrib import messages

import csv
from uuid import uuid4
from pathlib import Path

from storage.storage import Storage
# Create your views here.


def index(request):
    # latest_question_list = Question.objects.order_by('-pub_date')[:5]
    questionnaires = Questionnaire.objects.order_by('name')
    context = {'questionnaires': questionnaires}
    return render(request, 'vragenlijst/index.html', context)


def questionnaire(request, questionnaire_id):
    if request.method == 'POST':

        # As we should have a Django form, we could use te form validator. For now, everyhing is valid ;)
        questionnaire = Questionnaire.objects.get(pk=questionnaire_id)

        # Get all the questions in one list with a single query
        allQuestions = {}
        for question in list(questionnaire.allQuestions.order_by('order').values('id','name')):
            allQuestions[str(question['id'])] = question['name']

        # Store the response as a ';' seperated CSV file in order of the questionaire questions order
        try:
            csv_file = Path(f'{settings.HANZE_TEMP_CSV_STORAGE}/{questionnaire.name}-{uuid4()}.csv')
            with open(csv_file, 'w') as csvfile:
                filewriter = csv.writer(csvfile, delimiter=';', quotechar='"', quoting=csv.QUOTE_MINIMAL)
                # Add headers
                filewriter.writerow(['vraag', 'antwoord'])

                for question in allQuestions:
                    if request.POST.get(question):
                        filewriter.writerow([allQuestions[question], request.POST[question]])

            # Store the data also in a database
            QuestionnaireResponse(questionnaire=questionnaire, response=csv_file.read_text()).save()
            storageSettings = QuestionnaireStorage.objects.first()
            # Move data to external storage
            webdav = Storage(
                        storage_type=storageSettings.type,
                        url=storageSettings.server,
                        username=storageSettings.username,
                        password=storageSettings.password
                    )

            webdav.upload_file(source=csv_file, destination=f'{storageSettings.path}/{csv_file.name}')

            messages.success(request, 'Questionaire is saved to disk.')

        except Exception as ex:
            messages.error(request, f'Could not save the questionaire. Error: {ex}')


        # Redirect to starting point
        return HttpResponseRedirect('/vragenlijst/')

    questionnaire = Questionnaire.objects.get(pk=questionnaire_id)
    context = {'questionnaire': questionnaire, 'menu_width': 100 / questionnaire.topics.count()}
    return render(request, 'vragenlijst/form.html', context)