import logging
import os

from flask import Flask, send_from_directory
from flask_cors import CORS

import route.analyze
import route.result
import route.upload
from config import VERSION_PREFIX, MAX_CONTENT_LENGTH, MYSQL_URI, UPLOAD_DIR
from db import db
from route.util import make_response

app = Flask(__name__)

cors = CORS(app, resources={r"/*": {"origins": "*"}})

app.config['MAX_CONTENT_LENGTH'] = MAX_CONTENT_LENGTH

app.config['SQLALCHEMY_DATABASE_URI'] = MYSQL_URI
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

app.register_blueprint(route.upload.bp, url_prefix=VERSION_PREFIX)
app.register_blueprint(route.analyze.bp, url_prefix=VERSION_PREFIX)
app.register_blueprint(route.result.bp, url_prefix=VERSION_PREFIX)

db.init_app(app)
with app.app_context():
    # db.drop_all()
    db.create_all()

try:
    os.mkdir(UPLOAD_DIR + "/result")
except:
    pass

try:
    for i in os.listdir(UPLOAD_DIR):
        if i.endswith(".running"):
            os.remove(UPLOAD_DIR + "/" + i)
except:
    pass


@app.route("/")
def hello_world():
    return "<p>Hello, World!</p>"


@app.route("/file/<path:name>")
def download_file(name):
    return send_from_directory(UPLOAD_DIR + '/result/', name)


@app.errorhandler(413)
def error_handler(e):
    logging.exception(e)
    return make_response(413, "entity too large, max acceptable: " + str(MAX_CONTENT_LENGTH) + " bytes", {})


@app.errorhandler(404)
def error_handler(e):
    logging.exception(e)
    return make_response(404, "path not found.", {})


@app.errorhandler(Exception)
def error_handler(e):
    logging.exception(e)
    return make_response(500, "unknown internal server error.", {})


if __name__ == '__main__':
    app.run()