import os
import shutil

from flask import render_template, Blueprint
from flask_login import current_user, login_required
from sqlalchemy.exc import (
    DatabaseError,
    DataError,
    InterfaceError,
    InvalidRequestError,
)

from app import db
from admin import is_adminuser
from distribusikan.distribusis_info import DistribusisInfo
from admin_page.forms.admindistribusiform import AdminDistribusiForm
from admin_page.forms.adminuserform import AdminUserForm
from models.distribusi_model import Distribusis
from models.user_model import User

admin_page = Blueprint(
    "admin",
    __name__,
    template_folder="templates/describe_files",
    static_folder="static",
)


@admin_page.route("/admin", methods=["GET", "POST"])
@login_required
def admin():
    if not is_adminuser():
        return redirect(url_for("index"))
    adminuserform = add_users_to_form(AdminUserForm())
    admindistribusiform = add_distribusis_to_form(AdminDistribusiForm())
    if admindistribusiform.validate_on_submit():
        delete_distribusis(admindistribusiform)

    if adminuserform.validate_on_submit():
        if adminuserform.delete.data:
            delete_users(adminuserform)

    template = render_template(
        "admin.html",
        adminuserform=adminuserform,
        admindistribusiform=admindistribusiform,
    )
    return template


def delete_users(adminuserform):
    for userform in adminuserform:
        if "user" in userform.id:
            if userform.data:
                useremail = userform.label.text
                user = User.query.filter_by(email=useremail).first()
                delete_User_distribusis(user)
                delete_user_from_db(user)
                userform.errors.append(f"User {useremail} deleted!")


def delete_user_from_db(user):
    try:
        db.session.delete(user)
        db.session.commit()
    except (InvalidRequestError, DataError, InterfaceError, DatabaseError):
        db.session.rollback()


def delete_User_distribusis(user):
    distribusis = DistribusisInfo.get_user_distribusis(user.email)
    for distribusi in distribusis:
        delete_distribusi_files(distribusi.distribusiname)
        delete_distribusi_from_db(distribusi)


def delete_distribusis(admindistribusiform):
    for distribusiform in admindistribusiform:
        if "distribusi" in distribusiform.id:
            if distribusiform.data:
                distribusiname = distribusiform.label.text
                distribusi = Distribusis.query.filter_by(
                    distribusiname=distribusiname
                ).first()
                delete_distribusi_from_db(distribusi)
                delete_distribusi_files(distribusiname)
                distribusiform.errors.append("Deleted distribusi")


def delete_distribusi_from_db(distribusi):
    try:
        db.session.delete(distribusi)
        db.session.commit()
    except (InvalidRequestError, DataError, InterfaceError, DatabaseError):
        db.session.rollback()


def delete_distribusi_files(distribusiname):
    userfolder = os.path.join("stash", distribusiname)
    if os.path.exists(userfolder):
        shutil.rmtree(userfolder)
    cssfolder = os.path.join("themes/userthemes", distribusiname)
    if os.path.exists(cssfolder):
        shutil.rmtree(cssfolder)


def add_distribusis_to_form(admindistribusiform):
    distribusis = DistribusisInfo.visible_distribusis()
    admindistribusiform = AdminDistribusiForm.distribusi_list_form_builder(
        distribusis
    )
    return admindistribusiform


def add_users_to_form(adminuserform):
    users = User.query.all()
    adminuserform = AdminUserForm.user_list_form_builder(users)
    return adminuserform