# maubot - A plugin-based Matrix bot system.
# Copyright (C) 2018 Tulir Asokan
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from urllib.request import urlopen, Request
from urllib.error import HTTPError
from typing import IO, Tuple
import json

from colorama import Fore
import click

from ..base import app
from ..config import config


class UploadError(Exception):
    pass


@app.command(help="Upload a maubot plugin")
@click.argument("path")
@click.option("-s", "--server", help="The maubot instance to upload the plugin to")
def upload(path: str, server: str) -> None:
    if not server:
        try:
            server = config["default_server"]
        except KeyError:
            print(Fore.RED + "Default server not configured" + Fore.RESET)
            return
    try:
        token = config["servers"][server]
    except KeyError:
        print(Fore.RED + "Server not found" + Fore.RESET)
        return
    with open(path, "rb") as file:
        upload_file(file, server, token)


def upload_file(file: IO, server: str, token: str) -> None:
    req = Request(f"{server}/_matrix/maubot/v1/plugins/upload?allow_override=true", data=file,
                  headers={"Authorization": f"Bearer {token}", "Content-Type": "application/zip"})
    try:
        with urlopen(req) as resp_data:
            resp = json.load(resp_data)
            print(f"{Fore.GREEN}Plugin {Fore.CYAN}{resp['id']} v{resp['version']}{Fore.GREEN} "
                  f"uploaded to {Fore.CYAN}{server}{Fore.GREEN} successfully.{Fore.RESET}")
    except HTTPError as e:
        try:
            err = json.load(e)
        except json.JSONDecodeError:
            err = {}
        print(err.get("stacktrace", ""))
        print(Fore.RED + "Failed to upload plugin: " + err.get("error", str(e)) + Fore.RESET)