views.py

from django.shortcuts import render

# Create your views here.
import json
import datetime
import itertools
from itertools import groupby
from django.http import HttpResponse
from .models import OwnTrackLog
import logging
from django.shortcuts import render
from django.http import JsonResponse
from django.contrib.auth.decorators import login_required
from django.views.decorators.csrf import csrf_exempt
import requests

logger = logging.getLogger(__name__)


@csrf_exempt
def manage_owntrack_log(request):
    try:
        s = json.loads(request.read().decode('utf-8'))
        tid = s['tid']
        lat = s['lat']
        lon = s['lon']

        logger.info('tid:{tid}.lat:{lat}.lon:{lon}'.format(tid=tid, lat=lat, lon=lon))
        if tid and lat and lon:
            m = OwnTrackLog()
            m.tid = tid
            m.lat = lat
            m.lon = lon
            m.save()
            return HttpResponse('ok')
        else:
            return HttpResponse('data error')
    except Exception as e:
        logger.error(e)
        return HttpResponse('error')


@login_required
def show_maps(request):
    if request.user.is_superuser:
        defaultdate = str(datetime.datetime.now().date())
        date = request.GET.get('date', defaultdate)
        context = {
            'date': date
        }
        return render(request, 'owntracks/show_maps.html', context)
    else:
        from django.http import HttpResponseForbidden
        return HttpResponseForbidden()


@login_required
def show_log_dates(request):
    dates = OwnTrackLog.objects.values_list('created_time', flat=True)
    results = list(sorted(set(map(lambda x: x.strftime('%Y-%m-%d'), dates))))

    context = {
        'results': results
    }
    return render(request, 'owntracks/show_log_dates.html', context)


def convert_to_amap(locations):
    convert_result = []
    it = iter(locations)

    item = list(itertools.islice(it, 30))
    while item:
        datas = ';'.join(set(map(lambda x: str(x.lon) + ',' + str(x.lat), item)))

        key = '8440a376dfc9743d8924bf0ad141f28e'
        api = 'http://restapi.amap.com/v3/assistant/coordinate/convert'
        query = {
            'key': key,
            'locations': datas,
            'coordsys': 'gps'
        }
        rsp = requests.get(url=api, params=query)
        result = json.loads(rsp.text)
        convert_result.append(result['locations'])
        item = list(itertools.islice(it, 30))

    return ";".join(convert_result)


@login_required
def get_datas(request):
    import django.utils.timezone
    from django.utils.timezone import utc

    now = django.utils.timezone.now().replace(tzinfo=utc)
    querydate = django.utils.timezone.datetime(now.year, now.month, now.day, 0, 0, 0)
    if request.GET.get('date', None):
        date = list(map(lambda x: int(x), request.GET.get('date').split('-')))
        querydate = django.utils.timezone.datetime(date[0], date[1], date[2], 0, 0, 0)
    nextdate = querydate + datetime.timedelta(days=1)
    models = OwnTrackLog.objects.filter(created_time__range=(querydate, nextdate))
    result = list()
    if models and len(models):
        for tid, item in groupby(sorted(models, key=lambda k: k.tid), key=lambda k: k.tid):

            d = dict()
            d["name"] = tid
            paths = list()
            locations = convert_to_amap(sorted(item, key=lambda x: x.created_time))
            for i in locations.split(';'):
                paths.append(i.split(','))
            d["path"] = paths
            result.append(d)
    return JsonResponse(result, safe=False)