#!/usr/bin/python3
import sys
import os
import base64
import json
import datetime
import pytz
import time
import hashlib
import hmac
from urllib.parse import urlparse

# Add parent directory to path for o11 import
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import o11

from bs4 import BeautifulSoup
from pywidevine.cdm import Cdm
from pywidevine.device import Device
from pywidevine.pssh import PSSH

# Parse command line parameters
user = o11.parse_params(sys.argv, 'user')
password = o11.parse_params(sys.argv, 'password')
device = o11.parse_params(sys.argv, 'device')
pin = o11.parse_params(sys.argv, 'pin')

id = o11.parse_params(sys.argv, 'id')
action = o11.parse_params(sys.argv, 'action')

bind = o11.parse_params(sys.argv, 'bind')
proxy = o11.parse_params(sys.argv, 'proxy')
doh = o11.parse_params(sys.argv, 'doh')
worker = o11.parse_params(sys.argv, 'worker')

cdm = o11.parse_params(sys.argv, 'cdm')
drm = o11.parse_params(sys.argv, 'drm')
kid = o11.parse_params(sys.argv, 'kid')
pssh = o11.parse_params(sys.argv, 'pssh')
challenge = o11.parse_params(sys.argv, 'challenge')

heartbeaturl = o11.parse_params(sys.argv, 'heartbeaturl')
heartbeatparams = o11.parse_params(sys.argv, 'heartbeatparams')

# Session setup
o11Session = o11.session(bind=bind, proxy=proxy, worker=worker)
req = o11Session.get_session()
if doh != "":
    o11.dns(doh)

if challenge == "cert":
    challenge = "CAQ="

# Configuration
WVD_PATH = './WVD.wvd'
authFile = '/SkyGoIT_token.txt'
SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))

USER_AGENT = 'skyq:android:23.7.0:IT'
PLATFORM = 'ANDROID'
DEVICE = 'MOBILE'

token = ''
region = 'IT'

def get_auth():
    try:
        with open(SCRIPT_DIR + authFile, 'r') as f:
            return f.read().strip()
    except:
        return None

def save_auth(tok):
    with open(SCRIPT_DIR + authFile, 'w') as f:
        f.write(tok)

def calculate_signature(method, url, headers, payload, timestamp=None):
    app_id = 'SKYGO-ANDROID-v2'
    signature_key = bytearray('jM3CCqNAAQBY9VDeVd6rjttYc2cYDpqnsvNxuTfH', 'utf-8')
    sig_version = '1.0'
    
    if not timestamp:
        timestamp = int(time.time())
    
    if url.startswith('http'):
        parsed_url = urlparse(url)
        path = parsed_url.path
    else:
        path = url
    
    text_headers = ''
    for key in sorted(headers.keys()):
        if key.lower().startswith('x-skyott'):
            text_headers += key + ': ' + headers[key] + '\n'
    headers_md5 = hashlib.md5(text_headers.encode()).hexdigest()
    
    if isinstance(payload, str):
        payload = payload.encode('utf-8')
    payload_md5 = hashlib.md5(payload).hexdigest()
    
    to_hash = f'{method}\n{path}\n\n{app_id}\n{sig_version}\n{headers_md5}\n{timestamp}\n{payload_md5}\n'
    hashed = hmac.new(signature_key, to_hash.encode('utf8'), hashlib.sha1).digest()
    signature = base64.b64encode(hashed).decode('utf8')
    return f'SkyOTT client="{app_id}",signature="{signature}",timestamp="{timestamp}",version="{sig_version}"'

def get_region():
    response = req.get('https://init.sky.com/')
    try:
        return response.json()['geoip']['country-code']
    except:
        return 'IT'

def token_request(skyCEsidismesso01):
    token_url = 'https://p.sky.com/auth/tokens'
    headers = {
        'accept': 'application/vnd.tokens.v1+json',
        'content-type': 'application/vnd.tokens.v1+json',
        'x-skyott-device': DEVICE,
        'x-skyott-platform': PLATFORM,
        'x-skyott-proposition': 'SKYQ',
        'x-skyott-provider': 'SKY',
        'x-skyott-territory': region
    }
    post_data = {
        "auth": {"authScheme": "MESSO", "authToken": skyCEsidismesso01, "provider": "SKY", "providerTerritory": region, "proposition": "SKYQ"},
        "device": {"type": DEVICE, "platform": PLATFORM, "id": 'Z-sKxKApCe7c3dBMGAYtKU8NmWKDcWrCKobKpnVTLqc', "drmDeviceId": "UNKNOWN"}
    }
    post_data = json.dumps(post_data)
    headers['x-sky-signature'] = calculate_signature('POST', token_url, headers, post_data)
    response = req.post(token_url, headers=headers, data=post_data)
    return response.json()['userToken']

def login():
    global token, region
    print("logging in...", file=sys.stderr)
    
    region = get_region()
    
    skyCEsidismesso01 = get_auth()
    if not skyCEsidismesso01:
        print("No auth token found. Please add skyCEsidismesso01 cookie to auth file.", file=sys.stderr)
        save_auth('')
        sys.exit(1)
    
    try:
        token = token_request(skyCEsidismesso01)
        print("logged in successfully", file=sys.stderr)
        return token
    except Exception as e:
        print(f"Login failed: {e}", file=sys.stderr)
        sys.exit(1)

def get_token():
    global token
    if token:
        return token
    return login()

def get_pssh_from_mpd(url):
    response = req.get(url, headers={'User-Agent': USER_AGENT})
    content_protections = BeautifulSoup(response.content, features="xml").findAll('ContentProtection')
    for cp in content_protections:
        if cp.get('schemeIdUri', '').lower() == 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed':
            pssh_elem = cp.find('cenc:pssh')
            if pssh_elem:
                return pssh_elem.text
    return None

def get_single(service_key):
    live_url = 'https://p.sky.com/video/playouts/live'
    headers = {
        'x-skyott-device': DEVICE,
        'x-skyott-pinoverride': 'true',
        'x-skyott-platform': PLATFORM,
        'x-skyott-proposition': 'SKYQ',
        'x-skyott-provider': 'SKY',
        'x-skyott-territory': region,
        'x-skyott-usertoken': token,
        'Content-Type': 'application/vnd.playlive.v1+json',
    }
    post_data = {
        "serviceKey": service_key,
        "device": {
            "capabilities": [
                {"transport": "DASH", "protection": "WIDEVINE", "vcodec": "H264", "acodec": "AAC", "container": "ISOBMFF"},
            ],
            "model": "SM-G955F",
            "maxVideoFormat": "UHD",
            "hdcpEnabled": 'false',
            "supportedColourSpaces": ["SDR"]
        },
        "client": {"thirdParties": ["COMSCORE", "CONVIVA", "FRIENDS"]}
    }
    post_data = json.dumps(post_data)
    headers['x-sky-signature'] = calculate_signature('POST', live_url, headers, post_data)
    response = req.post(live_url, headers=headers, data=post_data)
    try:
        data = response.json()
        return data['asset']['endpoints'][0]['url'].split('?')[0], data['protection']['licenceAcquisitionUrl']
    except:
        return None, None

def do_cdm_internal(challenge_b64, lic_url):
    lic_headers = {'Content-Type': 'application/octet-stream'}
    response = req.post(lic_url, headers=lic_headers, data=base64.b64decode(challenge_b64))
    response_b64 = str(base64.b64encode(response.content), 'ascii')
    if response_b64.startswith('CA'):
        return response_b64
    return None

def do_cdm_external(pssh_b64, lic_url):
    try:
        pssh_obj = PSSH(pssh_b64)
        device_obj = Device.load(WVD_PATH)
        cdm_obj = Cdm.from_device(device_obj)
        session_id = cdm_obj.open()
        challenge_data = cdm_obj.get_license_challenge(session_id, pssh_obj)
        licence = req.post(lic_url, headers={'Content-Type': 'application/octet-stream'}, data=challenge_data)
        cdm_obj.parse_license(session_id, licence.content)
        keys = []
        for key in cdm_obj.get_keys(session_id):
            if key.type != 'SIGNING':
                keys.append(f"{key.kid.hex}:{key.key.hex()}")
        cdm_obj.close(session_id)
        return keys
    except Exception as e:
        print(f'CDM external failed: {e}', file=sys.stderr)
        return None

def do_action():
    get_token()
    
    if action == "login":
        login()
        sys.exit()
    
    if action == "channels":
        output = {'Channels': []}
        headers = {
            'X-SkyOTT-Territory': region,
            'X-SkyOTT-Proposition': 'SKYQ',
            'X-SkyOTT-Provider': 'SKY',
            'X-SkyOTT-Device': DEVICE,
            'X-SkyOTT-Platform': PLATFORM,
            'X-SkyOTT-Application': 'SKYQ/23.7.0',
            'User-Agent': USER_AGENT
        }
        response = req.get('https://atlantis.epgsky.com/as/services/4104/32', headers=headers)
        try:
            data = response.json()
            for s in data.get('services', []):
                if 'OTT' in s.get('servicetypes', []) and s.get('t', '').startswith('SkySp'):
                    channel = {
                        'Name': s.get('t', 'Unknown'),
                        'Mode': 'live',
                        'SessionManifest': True,
                        'ManifestScript': f"id={s.get('sid', '')}",
                        'CdmType': 'widevine',
                        'UseCdm': True,
                        'Cdm': f"id={s.get('sid', '')}",
                        'Video': 'best',
                        'OnDemand': True,
                        'SpeedUp': True,
                    }
                    output['Channels'].append(channel)
            print(json.dumps(output, indent=2))
        except Exception as e:
            print(f"Error: {e}", file=sys.stderr)
            return "error"
    
    elif action == "events":
        output = {'Events': []}
        print(json.dumps(output, indent=2))
    
    elif action == "heartbeat":
        sys.exit()
    
    elif action == "manifest":
        try:
            service_key = id
            video_url, lic_url = get_single(service_key)
            if not video_url:
                return "error"
            output = {
                "Cdn": [{"Name": "default", "ManifestUrl": video_url}],
                "ManifestUrl": video_url,
                "Headers": {"Manifest": {'User-Agent': USER_AGENT}, "Media": {'User-Agent': USER_AGENT}},
                "Heartbeat": {"Url": '', "Params": '', "PeriodMs": 5*60*1000},
                "LicenseUrl": lic_url
            }
            print(json.dumps(output))
        except Exception as e:
            print(f"Error: {e}", file=sys.stderr)
            return "error"
    
    elif action == "cdm" and cdm == "internal":
        try:
            service_key = id
            _, lic_url = get_single(service_key)
            if lic_url:
                result = do_cdm_internal(challenge, lic_url)
                if result:
                    print(result)
                else:
                    return "error"
            else:
                return "error"
        except Exception as e:
            print(f"Error: {e}", file=sys.stderr)
            return "error"
    
    elif action == "cdm" and cdm == "external":
        try:
            service_key = id
            video_url, lic_url = get_single(service_key)
            if lic_url:
                pssh_to_use = pssh if pssh else get_pssh_from_mpd(video_url)
                if pssh_to_use:
                    keys = do_cdm_external(pssh_to_use, lic_url)
                    if keys:
                        for key in keys:
                            print(key)
                    else:
                        return "error"
                else:
                    return "error"
            else:
                return "error"
        except Exception as e:
            print(f"Error: {e}", file=sys.stderr)
            return "error"
    
    else:
        print("invalid action: " + action, file=sys.stderr)

if do_action() == "error":
    login()
    do_action()
