#!/usr/local/bin/python3
# coding: utf-8

# ytdlbot - new.py
# 8/14/21 14:37
#

__author__ = "Benny <benny.think@gmail.com>"

import logging
import os
import pathlib
import re
import tempfile
import typing

import ffmpeg
from apscheduler.schedulers.background import BackgroundScheduler
from pyrogram import Client, filters, types
from pyrogram.types import InlineKeyboardButton, InlineKeyboardMarkup
from tgbot_ping import get_runtime

from config import (APP_HASH, APP_ID, AUTHORIZED_USER, ENABLE_VIP, OWNER,
                    TOKEN, WORKERS)
from constant import BotText
from downloader import convert_flac, sizeof_fmt, upload_hook, ytdl_download
from limit import Redis, verify_payment
from utils import customize_logger


def create_app(session="ytdl", workers=WORKERS):
    _app = Client(session, APP_ID, APP_HASH,
                  bot_token=TOKEN, workers=workers)

    return _app


customize_logger(["pyrogram.client", "pyrogram.session.session", "pyrogram.client", "pyrogram.connection.connection"])
app = create_app()
bot_text = BotText()

logging.info("Authorized users are %s", AUTHORIZED_USER)


def get_metadata(video_path):
    width, height, duration = 1280, 720, 0
    try:
        video_streams = ffmpeg.probe(video_path, select_streams="v")
        for item in video_streams.get("streams", []):
            height = item["height"]
            width = item["width"]
        duration = int(float(video_streams["format"]["duration"]))
    except Exception as e:
        logging.error(e)
    return dict(height=height, width=width, duration=duration)


def private_use(func):
    def wrapper(client: "Client", message: "types.Message"):
        chat_id = message.chat.id
        if AUTHORIZED_USER:
            users = [int(i) for i in AUTHORIZED_USER.split(",")]
        else:
            users = []
        if users and chat_id not in users:
            client.send_message(message.chat.id, bot_text.private)
            return

        return func(client, message)

    return wrapper


@app.on_message(filters.command(["start"]))
def start_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    logging.info("Welcome to youtube-dl bot!")
    client.send_chat_action(chat_id, "typing")
    greeting = bot_text.get_vip_greeting(chat_id)
    client.send_message(message.chat.id, greeting + bot_text.start + "\n\n" + bot_text.remaining_quota_caption(chat_id))


@app.on_message(filters.command(["help"]))
def help_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    client.send_chat_action(chat_id, "typing")
    client.send_message(chat_id, bot_text.help, disable_web_page_preview=True)


@app.on_message(filters.command(["ping"]))
def ping_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    client.send_chat_action(chat_id, "typing")
    if os.uname().sysname == "Darwin" or ".heroku" in os.getenv("PYTHONHOME", ""):
        bot_info = "ping unavailable."
    else:
        bot_info = get_runtime("botsrunner_ytdl_1", "YouTube-dl")
    if message.chat.username == OWNER:
        client.send_document(chat_id, Redis().generate_file(), caption=bot_info)
    else:
        client.send_message(chat_id, f"{bot_info}")


@app.on_message(filters.command(["about"]))
def help_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    client.send_chat_action(chat_id, "typing")
    client.send_message(chat_id, bot_text.about)


@app.on_message(filters.command(["terms"]))
def terms_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    client.send_chat_action(chat_id, "typing")
    client.send_message(chat_id, bot_text.terms)


@app.on_message(filters.command(["vip"]))
def vip_handler(client: "Client", message: "types.Message"):
    chat_id = message.chat.id
    text = message.text.strip()
    client.send_chat_action(chat_id, "typing")
    if text == "/vip":
        client.send_message(chat_id, bot_text.vip, disable_web_page_preview=True)
    else:
        bm: typing.Union["types.Message", "typing.Any"] = message.reply_text(bot_text.vip_pay, quote=True)
        unique = text.replace("/vip", "").strip()
        msg = verify_payment(chat_id, unique)
        bm.edit_text(msg)


@app.on_message(filters.incoming)
@private_use
def download_handler(client: "Client", message: "types.Message"):
    # check remaining quota
    chat_id = message.chat.id
    Redis().user_count(chat_id)

    if message.chat.type != "private" and not message.text.lower().startswith("/ytdl"):
        logging.warning("%s, it's annoying me...🙄️ ", message.text)
        return

    url = re.sub(r'/ytdl\s*', '', message.text)
    logging.info("start %s", url)

    if not re.findall(r"^https?://", url.lower()):
        Redis().update_metrics("bad_request")
        message.reply_text("I think you should send me a link.", quote=True)
        return

    Redis().update_metrics("video_request")
    bot_msg: typing.Union["types.Message", "typing.Any"] = message.reply_text("Processing", quote=True)
    client.send_chat_action(chat_id, 'upload_video')
    temp_dir = tempfile.TemporaryDirectory()

    result = ytdl_download(url, temp_dir.name, bot_msg)
    logging.info("Download complete.")

    markup = InlineKeyboardMarkup(
        [
            [  # First row
                InlineKeyboardButton(  # Generates a callback query when pressed
                    "audio",
                    callback_data="audio"
                )
            ]
        ]
    )

    if result["status"]:
        client.send_chat_action(chat_id, 'upload_document')
        video_paths = result["filepath"]
        bot_msg.edit_text('Download complete. Sending now...')
        for video_path in video_paths:
            filename = pathlib.Path(video_path).name
            remain = bot_text.remaining_quota_caption(chat_id)
            size = sizeof_fmt(os.stat(video_path).st_size)
            meta = get_metadata(video_path)
            client.send_video(chat_id, video_path,
                              supports_streaming=True,
                              caption=f"`{filename}`\n\n{url}\n\nsize: {size}\n\n{remain}",
                              progress=upload_hook, progress_args=(bot_msg,),
                              reply_markup=markup,
                              **meta
                              )
            Redis().update_metrics("video_success")
        bot_msg.edit_text('Download success!✅')
    else:
        client.send_chat_action(chat_id, 'typing')
        tb = result["error"][0:4000]
        bot_msg.edit_text(f"Download failed!❌\n\n```{tb}```", disable_web_page_preview=True)

    temp_dir.cleanup()


@app.on_callback_query()
def answer(client: "Client", callback_query: types.CallbackQuery):
    callback_query.answer(f"Converting to audio...please wait patiently")
    Redis().update_metrics("audio_request")

    msg = callback_query.message

    chat_id = msg.chat.id
    mp4_name = msg.video.file_name  # 'youtube-dl_test_video_a.mp4'
    flac_name = mp4_name.replace("mp4", "m4a")

    with tempfile.NamedTemporaryFile() as tmp:
        logging.info("downloading to %s", tmp.name)
        client.send_chat_action(chat_id, 'record_video_note')
        client.download_media(msg, tmp.name)
        logging.info("downloading complete %s", tmp.name)
        # execute ffmpeg
        client.send_chat_action(chat_id, 'record_audio')
        flac_tmp = convert_flac(flac_name, tmp)
        client.send_chat_action(chat_id, 'upload_audio')
        client.send_audio(chat_id, flac_tmp)
        Redis().update_metrics("audio_success")
        os.unlink(flac_tmp)


if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    scheduler.add_job(Redis().reset_today, 'cron', hour=0, minute=0)
    scheduler.start()
    banner = f"""
▌ ▌         ▀▛▘     ▌       ▛▀▖              ▜            ▌
▝▞  ▞▀▖ ▌ ▌  ▌  ▌ ▌ ▛▀▖ ▞▀▖ ▌ ▌ ▞▀▖ ▌  ▌ ▛▀▖ ▐  ▞▀▖ ▝▀▖ ▞▀▌
 ▌  ▌ ▌ ▌ ▌  ▌  ▌ ▌ ▌ ▌ ▛▀  ▌ ▌ ▌ ▌ ▐▐▐  ▌ ▌ ▐  ▌ ▌ ▞▀▌ ▌ ▌
 ▘  ▝▀  ▝▀▘  ▘  ▝▀▘ ▀▀  ▝▀▘ ▀▀  ▝▀   ▘▘  ▘ ▘  ▘ ▝▀  ▝▀▘ ▝▀▘

By @BennyThink, VIP mode: {ENABLE_VIP}
    """
    print(banner)
    app.run()