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

# 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 = '/Molotov_refresh.txt'
SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))

USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36'
MOLOTOV_AGENT = '{"app_id":"browser_app","app_build":4,"app_version_name":"4.4.4","browser_name":"unknown","type":"desktop","os_version":"5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36","electron_version":"0.0.0","os":"Win32","manufacturer":"","serial":"2ff331aa-7354-4a0c-a573-75c0f12e9de8","model":"Chrome - Windows","hasTouchbar":false,"brand":"Windows NT 10.0; Win64; x64","api_version":8,"features_supported":["social","new_button_conversion","paywall","channel_separator","empty_view_v2","store_offer_v2","player_mplus_teasing","embedded_player","channels_classification","new-post-registration","appstart-d0-full-image","payment_v2","armageddon","user_favorite","parental_control_v3","emptyview_v2","before_pay_periodicity_selection","player_midrolls","cookie_wall"],"inner_app_version_name":"4.11.1","qa":false}'

headers = {
    'accept': 'application/json',
    'content-type': 'application/json',
    'origin': 'https://app.molotov.tv',
    'referer': 'https://app.molotov.tv/',
    'user-agent': USER_AGENT,
    'x-molotov-agent': MOLOTOV_AGENT,
}

token = ''

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

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

def do_refresh(refresh_token):
    response = req.get(f'https://fapi.molotov.tv/v2/auth/refresh/{refresh_token}?access_token', headers=headers)
    data = response.json()
    return data['access_token'], data['refresh_token']

def login():
    global token
    print("logging in...", file=sys.stderr)
    
    refresh_token = get_auth()
    if not refresh_token:
        print("No refresh token found. Please add Molotov refresh token to auth file.", file=sys.stderr)
        save_auth('')
        sys.exit(1)
    
    try:
        tok, new_refresh = do_refresh(refresh_token)
        save_auth(new_refresh)
        token = tok
        print("logged in successfully", file=sys.stderr)
        return tok
    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 find_wv_pssh_offsets(raw):
    offsets = []
    offset = 0
    while True:
        offset = raw.find(b'pssh', offset)
        if offset == -1:
            break
        size = int.from_bytes(raw[offset-4:offset], byteorder='big')
        pssh_offset = offset - 4
        offsets.append(raw[pssh_offset:pssh_offset+size])
        offset += size
    return offsets

def to_pssh(content):
    wv_offsets = find_wv_pssh_offsets(content)
    return [base64.b64encode(wv_offset).decode() for wv_offset in wv_offsets]

def get_pssh_from_mpd(url):
    try:
        response = req.get(url, headers={'user-agent': USER_AGENT})
        location = str(response.url)
        soup = BeautifulSoup(response.content, features="xml")
        
        init = soup.find('SegmentTemplate')['initialization']
        bandwidth = soup.find('Representation')['bandwidth']
        rep_id = soup.find('Representation')['id']
        base_url = soup.find('BaseURL').text
        
        loc_parts = location.split('/')
        loc_parts.pop()
        
        if 'http' in base_url:
            init_url = base_url + init.replace('$Bandwidth$', bandwidth).replace('$RepresentationID$', rep_id)
        else:
            init_url = '/'.join(loc_parts) + '/' + init.replace('$Bandwidth$', bandwidth).replace('$RepresentationID$', rep_id)
        
        init_response = req.get(init_url, headers={'user-agent': USER_AGENT})
        return to_pssh(init_response.content)[-1]
    except:
        return None

def get_single(channel_id):
    params = {
        'id': channel_id,
        'source': 'embedded-player',
        'type': 'channel',
        'position': 'NaN',
        'start_over': 'false',
        'embedded': 'true',
        'skip_dialogs': 'true',
        'access_token': token,
    }
    response = req.get('https://fapi.molotov.tv/v2/me/assets', params=params, headers=headers)
    try:
        data = response.json()
        return data['stream']['url'], data['drm']['license_url'], data['drm']['token']
    except:
        return None, None, None

def do_cdm_internal(challenge_b64, lic_url, lic_token):
    lic_headers = {
        'Origin': 'https://app.molotov.tv',
        'Referer': 'https://app.molotov.tv/',
        'User-Agent': USER_AGENT,
        'x-dt-auth-token': lic_token,
        'Content-Type': 'application/octet-stream',
    }
    response = req.post(lic_url, headers=lic_headers, data=base64.b64decode(challenge_b64))
    try:
        data = response.json()
        return data['license']
    except:
        return None

def do_cdm_external(pssh_b64, lic_url, 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 = {
            'Origin': 'https://app.molotov.tv',
            'Referer': 'https://app.molotov.tv/',
            'User-Agent': USER_AGENT,
            'x-dt-auth-token': lic_token,
            'Content-Type': 'application/octet-stream',
        }
        
        licence = req.post(lic_url, headers=lic_headers, data=challenge_data)
        data = licence.json()
        cdm_obj.parse_license(session_id, data['license'])
        
        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': []}
        
        response = req.get('https://fapi.molotov.tv/v2/remote/channels', params={'access_token': token}, headers=headers)
        
        try:
            data = response.json()
            channels = []
            for s in data.get('sections', []):
                channels += s.get('items', [])
            
            for ch in channels:
                channel = {
                    'Name': ch.get('title', 'Unknown'),
                    'Mode': 'live',
                    'SessionManifest': True,
                    'ManifestScript': f"id={ch.get('id', '')}",
                    'CdmType': 'widevine',
                    'UseCdm': True,
                    'Cdm': f"id={ch.get('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:
            channel_id = id
            video_url, lic_url, lic_token = get_single(channel_id)
            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,
                "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:
            channel_id = id
            _, lic_url, lic_token = get_single(channel_id)
            if lic_url and lic_token:
                result = do_cdm_internal(challenge, lic_url, 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:
            channel_id = id
            video_url, lic_url, lic_token = get_single(channel_id)
            if lic_url and 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_url, 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()