init commit

dbapp/mapsapp/utils.py

@@ -0,0 +1,92 @@
+import requests
+import re
+import json
+from .models import Transponders
+from mainapp.models import Polarization, Satellite
+
+def search_satellite_on_page(data: dict, satellite_name: str):
+    for pos, value in data.get('page', {}).get('positions').items():
+        for name in value['satellites']:
+            if name['other_names'] is None:
+                name['other_names'] = ''
+            if satellite_name.lower() in name['name'].lower() or satellite_name.lower() in name['other_names'].lower():
+                return pos, name['id']
+    return '', ''
+
+def get_footprint_data(position: str = 62) -> dict:
+    """Возвращает словарь с данным по footprint для спутников на выбранной долготе"""
+    response = requests.get(f"https://www.satbeams.com/footprints?position={position}")
+    response.raise_for_status()
+    match = re.search(r'var data = ({.*?});', response.text, re.DOTALL)
+    if match:
+        json_str = match.group(1)
+        try:
+            data = json.loads(json_str)
+            return data.get("page", {}).get("footprint_data", {}).get("beams",[])
+        except json.JSONDecodeError as e:
+            print("Ошибка парсинга JSON:", e)
+    else:
+        print("Нужных данных не найдено")
+    return {}
+
+
+
+def get_all_page_data(url:str = 'https://www.satbeams.com/footprints') -> dict:
+    """Возвращает словарь с данными по всем спутникам на странице"""
+    response = requests.get(url)
+    response.raise_for_status()
+    match = re.search(r'var data = ({.*?});', response.text, re.DOTALL)
+    if match:
+        json_str = match.group(1)
+        try:
+            data = json.loads(json_str)
+            # Файл json на диске для достоверности
+            with open('data.json', 'w') as jf:
+                json.dump(data, jf, indent=2)
+            return data
+        except json.JSONDecodeError as e:
+            print("Ошибка парсинга JSON:", e)
+    else:
+        print("Нужных данных не найдено")
+    return {}
+
+
+def get_names_footprints_for_satellite(footprint_data: dict, sat_id: str) -> list[str]:
+    names = []
+    for beam in footprint_data:
+        if 'ku' in beam['band'].lower() and sat_id in beam['satellite_id']:
+            names.append(
+                {
+                    "name": beam['name'],
+                    "fullname": beam['fullname'][8:]
+                }
+            )
+    return names
+
+
+def get_band_names(satellite_name: str) -> list[str]:
+    data = get_all_page_data()
+    pos, sat_id = search_satellite_on_page(data, satellite_name)
+    footprints = get_footprint_data(pos)
+    names = get_names_footprints_for_satellite(footprints, sat_id)
+    return names
+
+def parse_transponders_from_json(filepath: str):
+    with open(filepath, encoding="utf-8") as jf:
+        data = json.load(jf)
+    for sat_name, trans_zone in data["satellites"].items():
+        for zone, trans in trans_zone.items():
+            for tran in trans:
+                f_b, f_e = tran["freq"][0].split("-")
+                f = round((float(f_b) + float(f_e))/2, 3)
+                f_range = round(abs(float(f_e) - float(f_b)), 3)
+                tran_obj = Transponders.objects.create(
+                    name=tran["name"],
+                    frequency=f,
+                    frequency_range=f_range,
+                    zone_name=zone,
+                    polarization=Polarization.objects.get(name=tran["pol"]),
+                    sat_id=Satellite.objects.get(name__iexact=sat_name)
+                )
+                tran_obj.save()
+