from django.http import HttpResponseRedirect, HttpResponse, JsonResponse
from django.shortcuts import render, get_object_or_404
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_http_methods

import json
import logging
import re

from account.decorators import login_required

from .models import Product, SeasonRegionMaterial
from procat2.models import Season, Region

log = logging.getLogger(__name__)


@csrf_exempt
@login_required
@require_http_methods(["POST"])
def search_products(request):
    body = request.body
    if not body or len(body) < 1:
        return HttpResponse('Bad request: no data', status=400)

    data = json.loads(body.decode('utf-8'))

    text = data.get('text')
    if not text or len(text) < 1:
        return HttpResponse('Bad request: no search text', status=400)

    season_id = data.get('season')
    if not season_id or len(season_id) < 1:
        return HttpResponse('Bad request: no season id', status=400)
    season = Season.objects.get(id=season_id)
    if not season:
        return HttpResponse('Bad request: no season found', status=400)

    region_id = data.get('region')
    if not region_id or len(region_id) < 1:
        return HttpResponse('Bad request: no region id', status=400)
    region = Region.objects.get(id=region_id)
    if not region:
        return HttpResponse('Bad request: no region found', status=400)

    ids = Product.find_sap_ids(text)
    log.info('found ids %s in %s', ids, text)

    prods = []
    missing = []

    if ids:
        srm = SeasonRegionMaterial.objects.filter(material__in=ids, season=season.id, region=region.id).distinct('material')
        srm_ids = [x.material for x in srm]

        search_prods = Product.objects.filter(sap__in=srm_ids).distinct('sap')

        # fix product order to match input ids and find missing ids
        prod_dict = dict([(p.sap, p) for p in search_prods])

        for i in ids:
            if prod_dict.get(i):
                prods.append(prod_dict[i])
            else:
                missing.append(i)

    out = {
        'found': [p.serialize() for p in prods],
        'missing': missing,
    }

    return JsonResponse(out)