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Gezer authored69440d7b
import csv
from io import StringIO
import os
from django.http import HttpResponse
from django.shortcuts import render
from django.http import JsonResponse
from django.views.decorators.csrf import ensure_csrf_cookie, csrf_protect
import json
from utils.influx import InfluxDBHelper
from dotenv import load_dotenv
from django.views.decorators.http import require_http_methods
from django.views.decorators.csrf import csrf_exempt
from django.contrib.auth import authenticate, login, logout
from .forms import CreateUserForm
@ensure_csrf_cookie
@require_http_methods(["GET"])
def set_csrf_token(request):
"""
We set the CSRF cookie on the frontend.
"""
return JsonResponse({"message": "CSRF cookie set"})
@require_http_methods(["POST"])
def login_view(request):
try:
data = json.loads(request.body.decode("utf-8"))
email = data["email"]
password = data["password"]
except json.JSONDecodeError:
return JsonResponse(
{"success": False, "message": "Invalid JSON"}, status=400
)
user = authenticate(request, username=email, password=password)
if user:
login(request, user) # also creates a session in the browser
return JsonResponse({"success": True})
return JsonResponse(
{"success": False, "message": "Invalid credentials"}, status=401
)
def logout_view(request):
logout(request)
return JsonResponse({"message": "Logged out"})
@require_http_methods(["GET"])
def user(request):
if request.user.is_authenticated:
return JsonResponse(
{"username": request.user.username, "email": request.user.email}
)
return JsonResponse({"message": "Not logged in"}, status=401)
@require_http_methods(["POST"])
def register(request):
data = json.loads(request.body.decode("utf-8"))
form = CreateUserForm(data)
if form.is_valid():
form.save()
return JsonResponse(
{"success": "User registered successfully"}, status=201
)
else:
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errors = form.errors.as_json()
return JsonResponse({"error": errors}, status=400)
@require_http_methods(["GET"])
def room_data_range(request):
try:
room = request.GET.get("room")
start = request.GET.get("start", "-30d")
stop = request.GET.get("stop", "now()")
if not room:
return JsonResponse(
{"error": "Missing 'room' parameter"}, status=400
)
load_dotenv()
client = InfluxDBHelper(
url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
tables = client.get_room_data_in_range(room, start, stop)
data_by_time = {}
for table in tables:
for record in table.records:
timestamp = str(record.get_time())
field = record.get_field()
value = record.get_value()
if timestamp not in data_by_time:
data_by_time[timestamp] = {}
data_by_time[timestamp][field] = value
return JsonResponse({"room": room, "data": data_by_time}, status=200)
except json.JSONDecodeError:
return JsonResponse(
{"success": False, "message": "Invalid JSON"}, status=400
)
@require_http_methods(["GET"])
def get_rooms(request):
client = InfluxDBHelper(
url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
tables = client.list_rooms()
rooms = set()
for table in tables:
for record in table.records:
rooms.add(record.get_value())
return JsonResponse({"rooms": sorted(rooms)})
@require_http_methods(["GET"])
def get_rooms_from_building(request):
building = request.GET.get("building")
if not building:
return JsonResponse({"error": "Missing 'building' parameter"}, status=400)
client = InfluxDBHelper(
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url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
tables = client.list_rooms()
rooms = set()
for table in tables:
for record in table.records:
room = record.get_value()
if isinstance(room, str) and room.startswith(f"{building}/"):
rooms.add(room)
return JsonResponse({"building": building, "rooms": sorted(rooms)})
@require_http_methods(["GET"])
def get_bau(request):
client = InfluxDBHelper(
url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
tables = client.list_rooms()
baus = set()
for table in tables:
for record in table.records:
room = record.get_value()
if isinstance(room, str) and "/" in room:
bau = room.split("/")[0]
baus.add(bau)
return JsonResponse({"baus": sorted(baus)})
@require_http_methods(["GET"])
def room_data_csv_view(request):
room = request.GET.get("room")
start = request.GET.get("start", "-30d")
stop = request.GET.get("stop", "now()")
if not room:
return JsonResponse({"error": "Missing 'room' parameter"}, status=400)
client = InfluxDBHelper(
url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
csv_stream = client.get_room_data_csv(room_id=room, start=start, stop=stop)
decoded = csv_stream.decode("utf-8")
f = StringIO(decoded)
reader = csv.DictReader(f)
results = []
for row in reader:
# optional: nur Datenzeilen filtern
if row.get("_field") and row.get("_value"):
results.append(
{
"time": row["_time"],
"field": row["_field"],
"value": row["_value"],
}
)
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return JsonResponse({"room": room, "data": results})
@require_http_methods(["GET"])
def room_data_csv_download(request):
room = request.GET.get("room")
start = request.GET.get("start", "-30d")
stop = request.GET.get("stop", "now()")
if not room:
return JsonResponse({"error": "Missing 'room' parameter"}, status=400)
client = InfluxDBHelper(
url=os.getenv("INFLUXDB_URL"),
token=os.getenv("INFLUXDB_TOKEN"),
org=os.getenv("INFLUXDB_ORG"),
bucket=os.getenv("INFLUXDB_BUCKET"),
)
csv_data = client.get_room_data_csv(room, start, stop)
response = HttpResponse(csv_data, content_type="text/csv")
response["Content-Disposition"] = f'attachment; filename="{room}_data.csv"'
return response