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

from usermodel import User
from distribusimodel import Distribusis

from statuspengguna.helper import UserHelper
from distribusiselector import SelectCurrentDistribusi
from forms.uploadform import UploadForm


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)
        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