From cdc917678bf87d337bc467a0d25e9a2c2965a564 Mon Sep 17 00:00:00 2001
From: Francisco Sandoval <fesv1975@gmail.com>
Date: Tue, 12 Dec 2023 22:49:05 -0300
Subject: [PATCH] lee los trayecto de redis

---
 project/api/views/linea.py | 64 +++++++++++++++++++++-----------------
 requirements.txt           |  3 +-
 2 files changed, 38 insertions(+), 29 deletions(-)

diff --git a/project/api/views/linea.py b/project/api/views/linea.py
index 1e21cb8..060de30 100755
--- a/project/api/views/linea.py
+++ b/project/api/views/linea.py
@@ -6,8 +6,12 @@ from django_filters.rest_framework import DjangoFilterBackend
 from django.db import connection
 from .. import models, serializers
 from django.http import JsonResponse
+from os import getenv
+import redis
+import json
 import logging
 
+
 class LineaViewSet(viewsets.ModelViewSet):
     queryset = models.Linea.objects.all()
     serializer_class = serializers.LineaSerializer
@@ -34,8 +38,6 @@ class LineaViewSet(viewsets.ModelViewSet):
     def paraderos(self, request, pk=None):
         pk = request.GET['id_linea']
 
-        logging.error(request.GET)
-
         paraderos = models.Paradero.objects \
             .filter(vigente=True, lineaparadero__id_linea=pk) \
             .values('id_paradero','stop_lat','stop_lon','stop_name') \
@@ -47,33 +49,39 @@ class LineaViewSet(viewsets.ModelViewSet):
     def buses(self, request, pk=None):
         pk = request.GET['id_linea']
 
-        query = "SELECT distinct \
-                l.route_color, \
-                l.route_text_color, \
-                gp.vehicle_license_plate as Patente_vehiculo, \
-                speed::numeric(5,2) as speed, \
-                gp.longitude::numeric, \
-                gp.latitude::numeric \
-            from gtfs_posiciones gp \
-            inner join linea l on (trim(gp.route_id)||'-'||trim(gp.direction_id::varchar))  = l.id_linea \
-            where l.id_linea = %s"
+        db_host = getenv('DB_REDIS_HOST')
+        db_port = getenv('DB_REDIS_PORT')
+        r = redis.Redis(host=db_host, port=db_port, decode_responses=True)
+
+        paraderos = models.Paradero.objects \
+            .filter(vigente=True, lineaparadero__id_linea=pk) \
+            .values('id_paradero') \
+            .all()
+
+        obj_buses = {}
+        array_buses = []
+        for p in paraderos:
+            key = f'stop_id:{p["id_paradero"]}'
+            data = r.get(key)
+
+            if data != None:
+                array_trayectos = json.loads(data)
+                for trayecto in array_trayectos:
+                    key_route = f'{trayecto["route_id"]}-{trayecto["direction_id"]}'
+                    if key_route == pk:
+                        patente = trayecto["vehicle_license_plate"]
+                        if patente not in obj_buses:
+                            obj_buses[patente] = {
+                                'Patente_vehiculo': trayecto["vehicle_license_plate"],
+                                'latitude': trayecto["latitude"],
+                                'longitude': trayecto["longitude"],
+                                'speed': trayecto["speed"]
+                            }
         
-        with connection.cursor() as cursor:
-            cursor.execute(query, [ pk ])
-            rows = cursor.fetchall()
-
-        buses = []
-        for row in rows:
-            buses.append({
-                'route_color': row[0],
-                'route_text_color': row[1],
-                'Patente_vehiculo': row[2],
-                'speed': row[3],
-                'longitude': row[4],
-                'latitude': row[5],
-            })
-
-        return JsonResponse(buses, safe=False)
+        for patente in obj_buses:
+            array_buses.append(obj_buses[patente])
+        
+        return JsonResponse(array_buses, safe=False)
 
 
     @action(detail=False, methods=['get'])
diff --git a/requirements.txt b/requirements.txt
index 087545d..37bbd31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,4 +9,5 @@ PyJWT
 pymongo
 Pillow
 openpyxl
-google
\ No newline at end of file
+google
+redis[hiredis]
\ No newline at end of file