#!/usr/bin/env python3

import logging
import os

from flask import Flask, request, render_template, redirect, url_for, session, send_file

from download_utils import APK, BadPackageNameException
from subprocess import CalledProcessError

if "LOG_LEVEL" in os.environ:
    log_level = os.environ["LOG_LEVEL"]
else:
    log_level = logging.INFO

# Logging configuration.
logger = logging.getLogger(__name__)
logging.basicConfig(
    format="%(asctime)s> [%(levelname)s] %(message)s",
    datefmt="%d/%m/%Y %H:%M:%S",
    level=log_level,
)
logging.getLogger("werkzeug").disabled = True

if os.environ.get('CONF_FOLDER') is None:
    logger.error("No conf folder available")
    exit(1)
TOKEN = None
with open(os.path.join(os.environ['CONF_FOLDER'], 'web.token')) as f:
    TOKEN = f.read().strip()

CONF = {
    'yes': True,
    'verbose': False,
    'tokencachefile': os.path.join(os.environ['CONF_FOLDER'], 'token.cache'),
}
CONF_FILE = os.path.join(os.environ['CONF_FOLDER'], 'gplaycli.conf')

app = Flask(__name__)
app.secret_key = TOKEN

@app.errorhandler(400)
@app.errorhandler(404)
@app.errorhandler(500)
def application_error(error):
    logger.error(error)
    return render_template('error.html', code=error.code, error=str(error)), error.code

@app.route("/return-file/")
def return_file():
    package_name = session.get("package_name")
    filename = f"{package_name}.apk"
    location = session.get("filename", '')
    if location != '':
        location = os.path.join('/bot', location)
    logging.info(f"sending {location}")
    return send_file(location, attachment_filename=filename, as_attachment=True)

@app.route("/download/<package_name>", methods=["GET"])
def get_download(package_name):
    return download(package_name)

@app.route("/download/", methods=["POST"])
def post_download():
    package_name = request.form.get('package_name', '').strip()
    return download(package_name)

def download(package_name):
    logger.info("downloading {} ...".format(package_name))

    apk = APK(package_name, conf=CONF, conf_file=CONF_FILE)

    try:
        apk.download()
        with apk.send(split=False, remove=False) as files:
            for f in files:
                session['package_name'] = package_name
                session['filename'] = f
    except BadPackageNameException as e:
        logger.error("Bad package name: {}".format(e))
        return render_template('error.html', code=500, error="Bad package name: {}".format(e)), 500
    except CalledProcessError:
        logger.error("Failed to send APK file")
        return render_template('error.html', code=500, error="Failed to send APK file"), 500

    return redirect(url_for("return_file"))

@app.route("/", methods=["GET"], strict_slashes=False)
def home():
    return render_template('home.html')

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000)