"""This is the main flask distribusi page"""
import os
import zipfile
import shutil
from datetime import timedelta


from flask import (
    render_template,
    redirect,
    request,
    flash,
    url_for,
    session,
    abort,
    send_from_directory,
)
from sqlalchemy.exc import (
    IntegrityError,
    DataError,
    DatabaseError,
    InterfaceError,
    InvalidRequestError,
)
from flask_login import (
    login_user,
    logout_user,
    login_required,
    current_user,
)

from werkzeug.routing import BuildError
from flask_bcrypt import generate_password_hash, check_password_hash
from flask_wtf.csrf import CSRFError

from app import create_app, db, login_manager
from usermodel import User

# Forms!
from forms.loginform import LoginForm
from forms.registerform import RegisterForm
from forms.uploadform import UploadForm
from forms.distribusiform import DistribusiForm
from forms.themeform import ThemeForm
from forms.editorform import EditorForm

# Tada!
from distribusi.cli import build_argparser
from distribusi.distribusi import distribusify

APP = create_app()


@APP.before_request
def session_handler():
    session.permanent = True
    APP.permanent_session_lifetime = timedelta(minutes=1)


@APP.route("/")
def index():
    users = User.query.filter(User.distribusiname.isnot(None)).all()
    distribusinames = []
    for user in users:
        distribusinames.append(user.distribusiname)
    return render_template("index.html", distribusinames=distribusinames)


@APP.route("/login", methods=["GET", "POST"])
def login():
    loginform = LoginForm()
    if loginform.validate_on_submit():
        try:
            user = User.query.filter_by(email=loginform.email.data).first()
            if check_password_hash(user.password, loginform.password.data):
                login_user(user)
                flash("Logged in successfully.", "success")
                next = request.args.get("next")
                if next is not None and not is_safe_url(next):  # noqa: F821
                    return abort(400)
                return redirect(next or url_for("index"))
            else:
                flash("Invalid Username or password!", "danger")
                loginform.password.errors.append("Invalid email or password!")
                return render_template("login.html", loginform=loginform)
        except Exception as e:
            flash(e, "danger")
    return render_template("login.html", loginform=loginform)


@APP.route("/register", methods=["GET", "POST"])
def register():
    registerform = RegisterForm()
    if registerform.validate_on_submit():
        try:
            email = registerform.email.data
            password = registerform.confirmpassword.data

            newuser = User(
                email=email,
                password=generate_password_hash(password),
            )

            db.session.add(newuser)
            db.session.commit()
            flash("Account Succesfully created", "success")
            login_user(newuser)
            return redirect(url_for("index"))

        except InvalidRequestError:
            db.session.rollback()
            flash("Something went wrong!", "danger")
        except IntegrityError:
            db.session.rollback()
            flash("User already exists!.", "warning")
        except DataError:
            db.session.rollback()
            flash("Invalid Entry", "warning")
        except InterfaceError:
            db.session.rollback()
            flash("Error connecting to the database", "danger")
        except DatabaseError:
            db.session.rollback()
            flash("Error connecting to the database", "danger")
        except BuildError:
            db.session.rollback()
            flash("An error occured !", "danger")
    return render_template("register.html", registerform=registerform)


@APP.route("/distribusi", methods=["GET", "POST"])
@login_required
def distribusi():
    uploadform = UploadForm()
    distribusiform = DistribusiForm()
    themeform = ThemeForm()
    user = User.query.filter_by(email=current_user.email).first()
    if user.distribusiname is None:
        print("nothing to deploy!")
    if distribusiform.validate_on_submit():
        zipfilename = "{}.zip".format(user.distribusiname)
        userfolder = os.path.join("stash", user.distribusiname)
        unzipfile = os.path.join(userfolder, zipfilename)
        if os.path.exists(unzipfile):
            with zipfile.ZipFile(unzipfile, "r") as zip_ref:
                # To do, replace extractall with inspection and extract
                zip_ref.extractall(userfolder)
        if os.path.exists(unzipfile):
            os.remove(os.path.join(userfolder, zipfilename))
        # To Do: Make sure nothing can be executed from the upload folder
        # add the css file
        cssfile = ""
        for filename in os.listdir(userfolder):
            if filename.endswith(".css"):
                cssfile = os.path.join(userfolder, filename)

        parser = build_argparser()
        args = parser.parse_args(["-s", cssfile])
        distribusify(args, userfolder)
        return redirect(url_for("index"))
    template = render_template(
        "distribusi.html",
        uploadform=uploadform,
        distribusiform=distribusiform,
        themeform=themeform,
    )
    return template


@APP.route("/upload", methods=["POST"])
@login_required
def upload():
    success = False
    uploadform = UploadForm()
    distribusiform = DistribusiForm()
    themeform = ThemeForm()
    if uploadform.validate_on_submit():
        user = User.query.filter_by(email=current_user.email).first()
        user.distribusiname = uploadform.sitename.data
        db.session.commit()

        zipfilename = "{}.zip".format(user.distribusiname)
        zipfile = uploadform.zipfile.data
        zipfile.save(os.path.join(APP.config["UPLOAD_FOLDER"], zipfilename))

        newuserfolder = os.path.join("stash", user.distribusiname)
        if not os.path.exists(newuserfolder):
            os.mkdir(newuserfolder)
        copyzipfile = os.path.join(APP.config["UPLOAD_FOLDER"], zipfilename)
        shutil.copy(copyzipfile, newuserfolder)
        os.remove(os.path.join(APP.config["UPLOAD_FOLDER"], zipfilename))
        success = True
    template = render_template(
        "distribusi.html",
        uploadform=uploadform,
        distribusiform=distribusiform,
        success=success,
        themeform=themeform,
    )
    return template


@APP.route("/theme", methods=["GET", "POST"])
@login_required
def theme():
    uploadform = UploadForm()
    distribusiform = DistribusiForm()
    themeform = ThemeForm()
    if themeform.validate_on_submit():
        user = User.query.filter_by(email=current_user.email).first()
        newuserfolder = os.path.join("stash", user.distribusiname)
        copycssfile = os.path.join(
            "themes",
            "{}.css".format(themeform.theme.data),
        )
        shutil.copy(copycssfile, newuserfolder)

    template = render_template(
        "distribusi.html",
        uploadform=uploadform,
        distribusiform=distribusiform,
        themeform=themeform,
    )
    return template


@APP.route("/editor", methods=["GET", "POST"])
@login_required
def editor():
    editorform = EditorForm()
    user = User.query.filter_by(email=current_user.email).first()
    files_uploaded = True
    if user.distribusiname is None:
        files_uploaded = False
        print("no folder to add css to!")
    if editorform.validate_on_submit():
        userfolder = os.path.join("stash", user.distribusiname)
        cssfilename = "{}.css".format(editorform.cssname.data)
        with open(os.path.join(userfolder, cssfilename), 'w') as cssfile:
            cssfile.write(editorform.css.data)
            cssfile.close

    template = render_template(
        "editor.html",
        files_uploaded=files_uploaded,
        editorform=editorform,
    )
    return template


@APP.route("/stash/<path:path>")
def distribusistash(path):
    return send_from_directory("stash", path)


@APP.route("/admin")
@login_required
def admin():
    return "admin"


@APP.route("/logout")
@login_required
def logout():
    logout_user()
    return redirect(url_for("index"))


@APP.errorhandler(CSRFError)
def handle_csrf_error(e):
    return render_template("csrf_error.html", reason=e.description), 400


@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))


if __name__ == "__main__":
    APP.debug = True
    APP.run(port=5000)