#!/usr/bin/python3
import sys
import os
import base64
import json
import datetime
import pytz
import hmac
import hashlib

# 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 = '/VodafonePT_auth.json'
SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))

USER_AGENT = 'Vodafone TV/1.50.21 Android/12/google/AOSP TV on x86'

ks = ''
signing_key = ''
device_id = ''

def get_auth():
    try:
        return json.load(open(SCRIPT_DIR + authFile))
    except:
        return None

def save_auth(auth_data):
    json.dump(auth_data, open(SCRIPT_DIR + authFile, 'w'), indent=2)

def hmac_sha256(key, message):
    message_bytes = message.encode('utf-8')
    hmac_obj = hmac.new(key.encode('utf-8'), message_bytes, hashlib.sha256)
    return hmac_obj.hexdigest()

def check_ks(ks_val, key):
    headers = {'user-agent': USER_AGENT, 'content-type': 'application/json', 'host': 'apigw.pt.vtv.vodafone.com', 'connection': 'Keep-Alive', 'accept-encoding': 'gzip'}
    json_data = {'apiVersion': '5.2', 'ks': ks_val}
    vtv_authorization_hash = hmac_sha256(key, json.dumps(json_data, separators=(',', ':')))
    headers['vtv-authorization'] = f'HMAC-SHA256:{vtv_authorization_hash}'
    response = req.post('https://apigw.pt.vtv.vodafone.com/vtv/phoenix/v1/api_v3/service/household/action/get', headers=headers, json=json_data)
    response.raise_for_status()

def login():
    global ks, signing_key, device_id
    print("logging in...", file=sys.stderr)
    
    auth = get_auth()
    if not auth or 'ks' not in auth:
        print("No auth found. Please add VodafonePT auth to auth file.", file=sys.stderr)
        print("Login and copy ks, signing_key, device_id from session", file=sys.stderr)
        save_auth({'ks': '', 'signing_key': '', 'device_id': ''})
        sys.exit(1)
    
    try:
        check_ks(auth['ks'], auth['signing_key'])
        ks = auth['ks']
        signing_key = auth['signing_key']
        device_id = auth['device_id']
        print("logged in successfully", file=sys.stderr)
        return ks
    except Exception as e:
        print(f"Login failed: {e}", file=sys.stderr)
        sys.exit(1)

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

def get_pssh_from_mpd(url):
    response = req.get(url, headers={'User-Agent': USER_AGENT}, timeout=5)
    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_lic_token():
    headers = {'user-agent': USER_AGENT, 'content-type': 'application/json', 'host': 'apigw.pt.vtv.vodafone.com', 'connection': 'Keep-Alive', 'accept-encoding': 'gzip'}
    json_data = {'apiVersion': '5.2', 'ks': ks}
    vtv_authorization_hash = hmac_sha256(signing_key, json.dumps(json_data, separators=(',', ':')))
    headers['vtv-authorization'] = f'HMAC-SHA256:{vtv_authorization_hash}'
    response = req.post('https://apigw.pt.vtv.vodafone.com/vtv/phoenix/v1/api_v3/service/householddevice/action/get', json=json_data, headers=headers)
    try:
        return response.json()['result']['drm']['data']
    except:
        return None

def do_cdm_internal(challenge_b64, lic_token):
    lic_headers = {'nv-tenant-id': 'VDP654RF', 'nv-authorizations': lic_token, 'accept': 'application/octet-stream', 'user-agent': 'OTVMediaPlayer', 'content-type': 'application/octet-stream', 'host': 'vdp654rf.anycast.nagra.com', 'connection': 'Keep-Alive', 'accept-encoding': 'gzip'}
    response = req.post('https://vdp654rf.anycast.nagra.com/VDP654RF/wvls/contentlicenseservice/v1/licenses', 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_token):
    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)
        lic_headers = {'nv-tenant-id': 'VDP654RF', 'nv-authorizations': lic_token, 'accept': 'application/octet-stream', 'user-agent': 'OTVMediaPlayer', 'content-type': 'application/octet-stream', 'host': 'vdp654rf.anycast.nagra.com', 'connection': 'Keep-Alive', 'accept-encoding': 'gzip'}
        licence = req.post('https://vdp654rf.anycast.nagra.com/VDP654RF/wvls/contentlicenseservice/v1/licenses', headers=lic_headers, data=challenge_data)
        cdm_obj.parse_license(session_id, licence.content)
        keys = [f"{key.kid.hex}:{key.key.hex()}" for key in cdm_obj.get_keys(session_id) if key.type != 'SIGNING']
        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 = {'host': 'apigw.pt.vtv.vodafone.com', 'user-agent': 'Vodafone TV/1.59.21 Android/13/google/AOSP TV on x86', 'content-type': 'application/json', 'connection': 'Keep-Alive', 'accept-encoding': 'gzip'}
        json_data = {'filter': {'objectType': 'KalturaChannelFilter', 'idEqual': 341986}, 'pager': {'objectType': 'KalturaFilterPager', 'pageSize': 500, 'pageIndex': 1}, 'apiVersion': '5.2', 'ks': ks, 'responseProfile': {'objectType': 'KalturaDetachedResponseProfile', 'relatedProfiles': [{'objectType': 'KalturaDetachedResponseProfile', 'filter': {'objectType': 'KalturaAssetImagePerRatioFilter'}, 'name': 'KalturaAssetImagePerRatioFilter'}]}}
        vtv_authorization_hash = hmac_sha256(signing_key, json.dumps(json_data, separators=(',', ':')))
        headers['vtv-authorization'] = f'HMAC-SHA256:{vtv_authorization_hash}'
        response = req.post('https://apigw.pt.vtv.vodafone.com/vtv/phoenix/v1/api_v3/service/asset/action/list', json=json_data, headers=headers)
        try:
            data = response.json()
            for ch in data.get('result', {}).get('objects', []):
                external_id = ch.get('externalId', '')
                channel = {
                    'Name': ch.get('description', 'Unknown'),
                    'Mode': 'live',
                    'SessionManifest': True,
                    'ManifestScript': f"id={external_id}",
                    'CdmType': 'widevine',
                    'UseCdm': True,
                    'Cdm': f"id={external_id}",
                    '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:
            external_id = id
            video_url = f'http://rr.cdn.vodafone.pt/LIVE/sdash/LIVE${external_id}/index.mpd/Manifest.mpd?start=LIVE&end=END&device=DASH_P_SSP_LIVE_UHD'
            lic_token = get_lic_token()
            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},
                "LicenseToken": lic_token
            }
            print(json.dumps(output))
        except Exception as e:
            print(f"Error: {e}", file=sys.stderr)
            return "error"
    
    elif action == "cdm" and cdm == "internal":
        try:
            lic_token = get_lic_token()
            if lic_token:
                result = do_cdm_internal(challenge, lic_token)
                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:
            external_id = id
            video_url = f'http://rr.cdn.vodafone.pt/LIVE/sdash/LIVE${external_id}/index.mpd/Manifest.mpd?start=LIVE&end=END&device=DASH_P_SSP_LIVE_UHD'
            lic_token = get_lic_token()
            if lic_token:
                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_token)
                    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()
