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()