import os
import shutil

from flask import flash
from flask_login import current_user
from sqlalchemy.exc import (DatabaseError, DataError, IntegrityError,
                            InterfaceError, InvalidRequestError)

from app import db
from distribusiselector import SelectCurrentDistribusi
from forms.uploadform import UploadForm
from models.distribusimodel import Distribusis
from models.usermodel import User
from statuspengguna.helper import UserHelper


def UploadNewDistribusi(uploadfolder):
    uploadform = UploadForm()
    if uploadform.validate_on_submit():
        user = User.query.filter_by(email=current_user.email).first()
        try:
            newdistribusi = Distribusis(
                distribusiname=uploadform.sitename.data,
                userid=user.id,
                term=uploadform.term.data,
                course=uploadform.course.data,
                year=uploadform.academicyear.data,
                tags=uploadform.tags.data,
            )
            user.currentdistribusi = uploadform.sitename.data
            db.session.add(newdistribusi)
            db.session.commit()
        except IntegrityError:
            db.session.rollback()
            uploadform.sitename.errors.append(
                "distribusi name already exists!"
            )
            flash("distribusi name already exists!", "warning")
            return uploadform
        except (InvalidRequestError, DataError, InterfaceError, DatabaseError):
            db.session.rollback()
            uploadform.sitename.errors.append("Something went wrong!")
            flash("Something went wrong!", "danger")
            return uploadform
        SelectCurrentDistribusi(newdistribusi.distribusiname)
        zipfilename = "{}.zip".format(newdistribusi.distribusiname)
        zipfile = uploadform.zipfile.data
        zipfile.save(os.path.join(uploadfolder, zipfilename))

        newuserfolder = os.path.join("stash", newdistribusi.distribusiname)
        if not os.path.exists(newuserfolder):
            os.mkdir(newuserfolder)

        copyzipfile = os.path.join(uploadfolder, zipfilename)
        shutil.copy(copyzipfile, newuserfolder)
        os.remove(os.path.join(uploadfolder, zipfilename))

    return uploadform


def UploadUpdatedFiles(uploadfolder):
    uploadform = UploadForm()
    if uploadform.validate_on_submit():
        try:
            current_distribusi = UserHelper.current_distribusi()
            distribusi = Distribusis.query.filter_by(
                distribusiname=current_distribusi
            ).first()
            distribusi.term = uploadform.term.data
            distribusi.course = uploadform.course.data
            distribusi.year = uploadform.academicyear.data
            distribusi.tags = uploadform.tags.data
            distribusi.visible = False
            db.session.commit()
        except (InvalidRequestError, DataError, InterfaceError, DatabaseError):
            db.session.rollback()
            uploadform.sitename.errors.append("Something went wrong!")

        zipfilename = "{}.zip".format(distribusi.distribusiname)
        zipfile = uploadform.zipfile.data
        zipfile.save(os.path.join(uploadfolder, zipfilename))

        newuserfolder = os.path.join("stash", distribusi.distribusiname)
        if os.path.exists(newuserfolder):
            shutil.rmtree(newuserfolder)
        os.mkdir(newuserfolder)

        copyzipfile = os.path.join(uploadfolder, zipfilename)
        shutil.copy(copyzipfile, newuserfolder)
        os.remove(os.path.join(uploadfolder, zipfilename))

    return uploadform