portal-oddajanje-solar/app.py

import logging
import os
import configparser
import re
from pathlib import Path

from flask import Flask, render_template, request
from flask_dropzone import Dropzone
from flask_migrate import Migrate, MigrateCommand
from flask_script import Manager
from portal.model import db

import portal.base



ENABLED_FILETYPES = ['txt', 'csv', 'pdf', 'doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'xml', 'mxliff', 'tmx']
REGEX_EMAIL = re.compile('^[a-z0-9]+[\._]?[a-z0-9]+[@]\w+[.]\w{2,3}$')

# TODO: make logging level configurable
logging.basicConfig(level=logging.DEBUG, format='[APP LOGGER] %(asctime)s %(levelname)s: %(message)s')

######################
# Load configuration #
######################
config = configparser.ConfigParser()
config.read('config.ini')
config = config['DEFAULT']

MAIL_HOST = config['MAIL_HOST'] 
MAIL_LOGIN = config['MAIL_LOGIN']
MAIL_PASS = config['MAIL_PASS']
SMTP_PORT = int(config['SMTP_PORT'])
IMAP_PORT = int(config['IMAP_PORT'])
MAX_UPLOAD_SIZE = int(config['MAX_UPLOAD_SIZE']) # Bytes
MAX_FILES_PER_UPLOAD = int(config['MAX_FILES_PER_UPLOAD'])
CONTRACT_CLIENT_CONTACT = config['CONTRACT_CLIENT_CONTACT']
MAIL_SUBJECT = config['MAIL_SUBJECT']
MAIL_BODY = config['MAIL_BODY']
SQL_CONN_STR = config['SQL_CONN_STR']
DESC_PREVODI = config['DESC_PREVODI']
DESC_GIGAFIDA = config['DESC_GIGAFIDA']

if 'UPLOADS_DIR' in config:
    UPLOADS_DIR = Path(config['UPLOADS_DIR'])
else:
    UPLOADS_DIR = Path(__file__).resolve().parent / 'uploads'
if not UPLOADS_DIR.exists:
    UPLOADS_DIR.mkdir(parents=True)

# Override configs with environment variables, if set
if 'PORTALDS4DS1_MAIL_HOST' in os.environ:
    MAIL_HOST = os.environ['PORTALDS4DS1_MAIL_HOST']
if 'PORTALDS4DS1_MAIL_LOGIN' in os.environ:
    MAIL_LOGIN = os.environ['PORTALDS4DS1_MAIL_LOGIN']
if 'PORTALDS4DS1_MAIL_PASS' in os.environ:
    MAIL_PASS = os.environ['PORTALDS4DS1_MAIL_PASS']
if 'PORTALDS4DS1_SMTP_PORT' in os.environ:
    SMTP_PORT = int(os.environ['PORTALDS4DS1_SMTP_PORT'])
if 'PORTALDS4DS1_IMAP_PORT' in os.environ:
    IMAP_PORT = int(os.environ['PORTALDS4DS1_IMAP_PORT'])
if 'PORTALDS4DS1_MAX_UPLOAD_SIZE' in os.environ:
    MAX_UPLOAD_SIZE = int(os.environ['PORTALDS4DS1_MAX_UPLOAD_SIZE'])
if 'PORTALDS4DS1_MAX_FILES_PER_UPLOAD' in os.environ:
    MAX_FILES_PER_UPLOAD = int(os.environ['PORTALDS4DS1_MAX_FILES_PER_UPLOAD'])
if 'PORTALDS4DS1_CONTRACT_CLIENT_CONTACT' in os.environ:
    CONTRACT_CLIENT_CONTACT = os.environ['PORTALDS4DS1_CONTRACT_CLIENT_CONTACT']
if 'PORTALDS4DS1_UPLOADS_DIR' in os.environ:
    UPLOADS_DIR = os.environ['PORTALDS4DS1_UPLOADS_DIR']
if 'PORTALDS4DS1_MAIL_SUBJECT' in os.environ:
    MAIL_SUBJECT = os.environ['PORTALDS4DS1_MAIL_SUBJECT']
if 'PORTALDS4DS1_MAIL_BODY' in os.environ:
    MAIL_BODY = os.environ['PORTALDS4DS1_MAIL_BODY']
if 'PORTALDS4DS1_SQL_CONN_STR' in os.environ:
    SQL_CONN_STR = os.environ['PORTALDS4DS1_SQL_CONN_STR']
if 'PORTALDS4DS1_DESC_PREVODI' in os.environ:
    DESC_PREVODI = os.environ['PORTALDS4DS1_DESC_PREVODI']
if 'PORTALDS4DS1_DESC_GIGAFIDA' in os.environ:
    DESC_GIGAFIDA = os.environ['PORTALDS4DS1_DESC_GIGAFIDA']

VALID_CORPUS_NAMES = ['prevodi', 'gigafida', 'solar']


######################

app = Flask(__name__)

app.config.update(
    UPLOADED_PATH = UPLOADS_DIR,
    MAX_CONTENT_LENGTH = MAX_UPLOAD_SIZE,
    TEMPLATES_AUTO_RELOAD = True,
    SQLALCHEMY_DATABASE_URI = SQL_CONN_STR,
    SQLALCHEMY_ECHO = True
)

# Run "python app.py db -?" to see more info about DB migrations.
manager = Manager(app)
db.init_app(app)
migrate = Migrate(app, db)
manager.add_command('db', MigrateCommand)

# Set up dropzone.js to serve all the stuff for "file dropping" on the web interface.
dropzone = Dropzone(app)

upload_handler = portal.base.UploadHandler(
        UPLOADS_DIR=UPLOADS_DIR,
        MAIL_HOST=MAIL_HOST,
        MAIL_LOGIN=MAIL_LOGIN,
        MAIL_PASS=MAIL_PASS,
        SMTP_PORT=SMTP_PORT,
        IMAP_PORT=IMAP_PORT,
        MAIL_SUBJECT=MAIL_SUBJECT,
        MAIL_BODY=MAIL_BODY,
        CONTRACT_CLIENT_CONTACT=CONTRACT_CLIENT_CONTACT
        )
        

@app.route('/')
def index():
    return render_template('index.html')


@app.route('/<corpus_name>')
def index_corpus(corpus_name):
    if corpus_name not in VALID_CORPUS_NAMES:
        return 'Korpus "{}" ne obstaja.'.format(corpus_name), 404

    if corpus_name == 'prevodi':
        description = DESC_PREVODI
    elif corpus_name == 'gigafida':
        description = DESC_GIGAFIDA
    elif corpus_name == 'solar':
        return handle_solar(request)

    return render_template('basic.html', 
            corpus_name=corpus_name, description=description, max_files=MAX_FILES_PER_UPLOAD)


def handle_solar(request):
    return 404


@app.route('/<corpus_name>/upload', methods=['POST'])
def handle_upload(corpus_name):
    if corpus_name not in VALID_CORPUS_NAMES:
        return 404
    
    if corpus_name == 'solar':
        return handle_upload_solar(request)
    else:
        return handle_upload_unauthenticated(request, corpus_name)


def handle_upload_solar(request):
    return 404


def handle_upload_unauthenticated(request, corpus_name):
    files = request.files
    if len(files) > MAX_FILES_PER_UPLOAD:
        return 'Naložite lahko do {} datotek hkrati.'.format(MAX_FILES_PER_UPLOAD), 400
    elif len(files) < 1:
        return 'Priložena ni bila nobena datoteka.', 400

    err = check_suffixes(files)
    if err:
        return err, 400

    err = check_form(request.form)
    if err:
        return err, 400

    # Parse request.
    upload_metadata = upload_handler.extract_upload_metadata(corpus_name, request)

    logging.info('Upload with id "{}" supplied form data: {}'.format(upload_metadata['upload_id'],
        str(upload_metadata['form_data'])))

    # Generate contract PDF file based on the uploads metadata.
    upload_handler.generate_upload_contract_pdf(upload_metadata)

    # Store uploaded files to disk.
    upload_handler.store_datafiles(files, upload_metadata)

    # Store metadata to database.
    upload_handler.store_metadata_unauthenticated(upload_metadata)

    # Send confirmation mail along with the contract to the submitted email address.
    upload_handler.send_confirm_mail(upload_metadata)

    return 'Uspešno ste oddali datotek(e). Št. datotek: {}'.format(len(files))


def check_suffixes(files):
    for key, f in files.items():
        if key.startswith('file'):
            suffix = f.filename.split('.')[-1]
            if suffix not in ENABLED_FILETYPES:
                return 'Datoteka "{}" ni pravilnega formata.'.format(f.filename)
    return None


def check_form(form):
    ime = form.get('ime')
    podjetje = form.get('podjetje')
    naslov = form.get('naslov')
    posta = form.get('posta')
    email = form.get('email')
    telefon = form.get('telefon')

    if len(ime) > 100:
        return 'Predolgo ime.'

    if len(podjetje) > 100:
        return 'Predolgo ime institucije.'

    if len(email) > 100:
        return 'Predolgi email naslov'
    elif not re.search(REGEX_EMAIL, email):
        return 'Email napačnega formata.'

    if len(telefon) > 100:
        return 'Predolga telefonska št.'

    if len(naslov) > 100:
        return 'Predolg  naslov.'

    if len(posta) > 100:
        return 'Predolga pošta'

    return None

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