"""
Video + Music Stream Telegram Bot
Copyright (c) 2022-present levina=lab <https://github.com/levina-lab>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but without any warranty; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/licenses.html>
"""


import os
import sys

from git import Repo
from os import system, execle, environ
from git.exc import InvalidGitRepositoryError

from pyrogram.types import Message
from pyrogram import Client, filters

from program import LOGS
from config import UPSTREAM_REPO, BOT_USERNAME

from driver.filters import command
from driver.decorators import bot_creator


def gen_chlog(repo, diff):
    upstream_repo_url = Repo().remotes[0].config_reader.get("url").replace(".git", "")
    ac_br = repo.active_branch.name
    ch_log = ""
    tldr_log = ""
    ch = f"<b>updates for <a href={upstream_repo_url}/tree/{ac_br}>[{ac_br}]</a>:</b>"
    ch_tl = f"updates for {ac_br}:"
    d_form = "%d/%m/%y || %H:%M"
    for c in repo.iter_commits(diff):
        ch_log += (
            f"\n\n💬 <b>{c.count()}</b> 🗓 <b>[{c.committed_datetime.strftime(d_form)}]</b>\n<b>"
            f"<a href={upstream_repo_url.rstrip('/')}/commit/{c}>[{c.summary}]</a></b> 👨‍💻 <code>{c.author}</code>"
        )
        tldr_log += f"\n\n💬 {c.count()} 🗓 [{c.committed_datetime.strftime(d_form)}]\n[{c.summary}] 👨‍💻 {c.author}"
    if ch_log:
        return str(ch + ch_log), str(ch_tl + tldr_log)
    return ch_log, tldr_log


def updater():
    try:
        repo = Repo()
    except InvalidGitRepositoryError:
        repo = Repo.init()
        origin = repo.create_remote("upstream", UPSTREAM_REPO)
        origin.fetch()
        repo.create_head("main", origin.refs.main)
        repo.heads.main.set_tracking_branch(origin.refs.main)
        repo.heads.main.checkout(True)
    ac_br = repo.active_branch.name
    if "upstream" in repo.remotes:
        ups_rem = repo.remote("upstream")
    else:
        ups_rem = repo.create_remote("upstream", UPSTREAM_REPO)
    ups_rem.fetch(ac_br)
    changelog, tl_chnglog = gen_chlog(repo, f"HEAD..upstream/{ac_br}")
    return bool(changelog)


@Client.on_message(command(["update", f"update@{BOT_USERNAME}"]) & ~filters.edited)
@bot_creator
async def update_bot(_, message: Message):
    chat_id = message.chat.id
    msg = await message.reply("❖ Checking updates...")
    update_avail = updater()
    if update_avail:
        await msg.edit("✅ Update finished !\n\n• Bot restarting, back active again in 1 minutes.")
        system("git pull -f && pip3 install --no-cache-dir -r requirements.txt")
        execle(sys.executable, sys.executable, "main.py", environ)
        return
    await msg.edit(f"❖ bot is **up-to-date** with [main]({UPSTREAM_REPO}/tree/main) ❖", disable_web_page_preview=True)


@Client.on_message(command(["restart", f"restart@{BOT_USERNAME}"]) & ~filters.edited)
@bot_creator
async def restart_bot(_, message: Message):
    try:
        msg = await message.reply_text("❖ Restarting bot...")
        LOGS.info("[INFO]: BOT SERVER RESTARTED !!")
    except BaseException as err:
        LOGS.info(f"[ERROR]: {err}")
        return
    await msg.edit_text("✅ Bot has restarted !\n\n» back active again in 5-10 seconds.")
    os.system(f"kill -9 {os.getpid()} && python3 main.py")