from django.shortcuts import render, redirect
from django.contrib import messages
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth.decorators import login_required
from django.core.exceptions import ValidationError
from django.db.models import Q
#
from users.models import User
from .models import VendorsData
from .forms import VendorEditForm
from .functions import vendor_generator
import uuid

# Create your views here.
@login_required(login_url='login')
def index(request):
    context = {}
    return render(request, 'base/dashboard.html', context)

def LoginPage(request):
    if request.method == 'POST':
        email = request.POST.get('email')
        password = request.POST.get('password')
        user = None
        error = None
        try:
            user = User.objects.get(email=email)
        except:
            error = messages.error(request, 'Email not registered')

        if user is not None and error is None:
            user = authenticate(request, email=email, password=password)
            if user is not None:
                login(request, user)
                return redirect('dashboard')
            else:
                messages.error(request, 'Wrong password')


    context = {}
    return render(request, 'base/login.html', context)

def LogoutPage(request):
    logout(request)
    return redirect('login')

@login_required(login_url='login')
def VendorPage(request):
    vendors = VendorsData.objects.filter(Q(vendorid_id=request.user.id) & Q(vendorDeleted=False))
    context = {'vendors': vendors}
    return render(request, 'base/vendor.html', context)

@login_required(login_url='login')
def VendorEditPage(request, vdr ):
    vendor = VendorsData.objects.get(vendorUUID=vdr)
    try:
        if vendor.vendorid_id is not request.user.id:
            messages.error(request, "You are not authorized to edit this vendor")
            return redirect('vendor')
    except Exception as e:
        messages.error(request, "Something wrong happened, try again.")
        return redirect('vendor')
    

    form = VendorEditForm()
    vendor_title = "Edit Vendor"
    if request.method == 'POST':
        if request.POST.get('submit') == 'Submit':
            try:
                vendors = VendorsData.objects.get(vendorUUID=vdr)
                form = VendorEditForm(request.POST, instance=vendors)
                if form.is_valid():
                    form.save()
                    messages.success(request, "Vendor information saved")
                    return redirect('vendor')
                else:
                    messages.error(request, "Something wrong happened, try again.")
            except Exception as e:
                messages.error(request, "Something wrong happened, try again.")
    vendors = VendorsData.objects.get(vendorUUID=vdr)
    context = {'vendors': vendors, 'form': form, 'vendor_title': vendor_title}
    return render(request, 'base/vendorEdit.html', context)

@login_required(login_url='login')
def VendorCreatePage(request):
    vendor_title = "Create Vendor"
    if request.method == 'POST':
        try:
            form = VendorEditForm(request.POST)
            if form.is_valid():
                # Generate vendor
                new_vendor = form.save(commit=False)
                try:
                    vdr = vendor_generator()
                    vendor_check = VendorsData.objects.get(vendorUUID=vdr)
                    while vendor_check is vdr:
                        vdr = vendor_generator()
                        vendor_check = VendorsData.objects.get(vendorUUID=vdr)
                except:
                    pass

                new_vendor.vendor = vdr
                new_vendor.vendorSecretKey = uuid.uuid4()
                new_vendor.vendorUUID = uuid.uuid4()
                new_vendor.vendorid_id = request.user.id
                # Save vendor
                try:
                    new_vendor.save()
                    messages.success(request, "Vendor created")
                    return redirect('vendor')
                except Exception as e:
                    print(e)
            else:
                messages.error(request, "Something wrong happened, try again.")
        except Exception as e:
            messages.error(request, "Something wrong happened, try again.")


    context = {'vendor_title': vendor_title}
    return render(request, 'base/vendorEdit.html', context)