import os
import shutil
import zipfile

# Tada!
from distribusi.cli import build_argparser
from distribusi.distribusi import distribusify
from flask import flash, redirect, render_template, url_for
from flask_login import current_user
from sqlalchemy.exc import (DatabaseError, DataError, InterfaceError,
                            InvalidRequestError)

from app import db
from distribusiselector import SelectorVisible
from distribusisinfo import DistribusisInfo
from forms.distribusiform import DistribusiForm
from forms.publicthemeform import PublicThemeForm
from forms.selectorform import SelectorForm
from forms.themeform import ThemeForm
# Forms!
from forms.uploadform import UploadForm
from models.distribusimodel import Distribusis
from models.usermodel import User
# UserPengguna
from statuspengguna.helper import UserHelper


def DistribusiWorkflow():
    distribusiform = DistribusiForm()
    current_distribusi = UserHelper.current_distribusi()
    user = User.query.filter_by(email=current_user.email).first()
    distribusi = Distribusis.query.filter_by(
        distribusiname=current_distribusi
    ).first()

    if distribusiform.validate_on_submit():
        userfolder = os.path.join("stash", distribusi.distribusiname)
        cssfile = GetCssFile(distribusi)
        UnzipDistribusiFiles(distribusi, userfolder)
        CleanUpDistribusiFiles(userfolder)
        RunDistribusi(userfolder, cssfile)
        SetDistribusiToVisible(distribusi, user)
        DeleteCssFile(cssfile)
        return redirect(url_for("index"))

    return RenderDistribusiTemplate(distribusiform, current_distribusi)


def UnzipDistribusiFiles(distribusi, userfolder):
    zipfilename = "{}.zip".format(distribusi.distribusiname)
    unzipfile = os.path.join(userfolder, zipfilename)

    if os.path.exists(unzipfile):
        with zipfile.ZipFile(unzipfile, "r") as zip_ref:
            zip_ref.extractall(userfolder)
    # after extracting all files remove zip file.
    if os.path.exists(unzipfile):
        os.remove(os.path.join(userfolder, zipfilename))


def CleanUpDistribusiFiles(userfolder):
    if os.path.exists(userfolder):
        RemoveMacFolders(userfolder)


def RemoveMacFolders(path):
    for filename in os.listdir(path):
        fullpath = os.path.join(path, filename)
        if filename.startswith("."):
            if os.path.isdir(fullpath):
                shutil.rmtree(fullpath)
            else:
                os.remove(fullpath)
        if filename == "__MACOSX":
            shutil.rmtree(fullpath)
        if os.path.isdir(fullpath):
            RemoveMacFolders(fullpath)


def GetCssFile(distribusi):
    cssfile = ""
    cssfolder = os.path.join("themes/userthemes", distribusi.distribusiname)
    if os.path.exists(cssfolder):
        for filename in os.listdir(cssfolder):
            if filename.endswith(".css"):
                cssfile = os.path.join(cssfolder, filename)
    return cssfile


def RunDistribusi(userfolder, cssfile):
    parser = build_argparser()
    args = parser.parse_args(["--menu-with-index", "-s", cssfile])
    distribusify(args, userfolder)


def SetDistribusiToVisible(distribusi, user):
    try:
        distribusi.visible = True
        user.currentdistribusi = None
        db.session.commit()
    except (InvalidRequestError, DataError, InterfaceError, DatabaseError):
        db.session.rollback()
        flash("Unknown error occured!")


def DeleteCssFile(cssfile):
    if os.path.exists(cssfile):
        os.remove(cssfile)


def RenderDistribusiTemplate(distribusiform, current_distribusi):
    uploadform = UploadForm()
    themeform = ThemeForm()
    publicthemeform = PublicThemeForm()
    publicthemeform.publicthemes.choices = DistribusisInfo.publicthemes()
    selectorform = SelectorForm()
    selectorform.distribusis.choices = DistribusisInfo.userdistribusinames()
    selectorvisible = SelectorVisible()

    files_uploaded = UserHelper.is_zip_uploaded(current_distribusi)
    distribusi_live = UserHelper.is_distribusi_live(current_distribusi)
    css_selected = UserHelper.is_css_selected(current_distribusi)
    limit_reached = UserHelper.distribusi_limit_reached()
    template = render_template(
        "distribusi.html",
        uploadform=uploadform,
        distribusiform=distribusiform,
        themeform=themeform,
        publicthemeform=publicthemeform,
        selectorform=selectorform,
        files_uploaded=files_uploaded,
        distribusi_live=distribusi_live,
        css_selected=css_selected,
        selectorvisible=selectorvisible,
        limit_reached=limit_reached,
    )
    return template