import os
import shutil

import bleach
from bleach_allowlist import all_styles
from flask import render_template
from sqlalchemy.exc import (
    DatabaseError,
    DataError,
    InterfaceError,
    InvalidRequestError,
)
from werkzeug.utils import secure_filename

from app import db, APP
from distribusikan.distribusis_info import DistribusisInfo
from distribusikan.forms.distribusiform import DistribusiForm
from distribusikan.forms.editorform import EditorForm
from distribusikan.forms.publicthemeform import PublicThemeForm
from distribusikan.forms.selectorform import SelectorForm
from distribusikan.forms.themeform import ThemeForm
from distribusikan.forms.uploadform import UploadForm
from models.distribusi_model import Distribusis
from statuspengguna.helper import UserHelper


def css_editor_page():
    editorform = EditorForm()
    current_distribusi = UserHelper.current_distribusi()
    if editorform.validate_on_submit():
        validate_edit_css_form(editorform, current_distribusi)
        return render_distribusi_template(current_distribusi)

    return render_editor_template(editorform, current_distribusi)


def validate_edit_css_form(editorform, current_distribusi):
    newcssfolder = os.path.join("themes/userthemes", current_distribusi)
    if os.path.exists(newcssfolder):
        shutil.rmtree(newcssfolder)

    publicfolder = os.path.join("themes/publicthemes", current_distribusi)
    if os.path.exists(publicfolder):
        shutil.rmtree(publicfolder)

    if editorform.public.data:
        make_public_theme(editorform, current_distribusi)
        if editorform.cssfile.data:
            save_upload_css_file(editorform, publicfolder)
            copy_public_to_user_folder(editorform, publicfolder, newcssfolder)
            return
        else:
            write_css_to_file(editorform, publicfolder)

    if editorform.cssfile.data:
        save_upload_css_file(editorform, newcssfolder)
        return
    if editorform.cssname.data:
        write_css_to_file(editorform, newcssfolder)


def save_upload_css_file(editorform, newcssfolder):
    if not os.path.exists(newcssfolder):
        os.mkdir(newcssfolder)
    cssfile = editorform.cssfile.data
    cssfilename = f"{secure_filename(editorform.cssname.data)}.css"
    cssfile.save(os.path.join(newcssfolder, cssfilename))
    openfile = open(os.path.join(newcssfolder, cssfilename), "r")
    cleancss = bleach.clean(openfile.read(), all_styles)
    cleancss = cleancss.replace(">", ">")
    openfile.close()
    cleanfile = open(os.path.join(newcssfolder, cssfilename), "w")
    cleanfile.write(cleancss)
    cleanfile.close()


def write_css_to_file(editorform, newcssfolder):
    if not os.path.exists(newcssfolder):
        os.mkdir(newcssfolder)

    cssfilename = f"{secure_filename(editorform.cssname.data)}.css"
    cleancss = bleach.clean(editorform.css.data, all_styles)
    cleancss = cleancss.replace(">", ">")
    with open(os.path.join(newcssfolder, cssfilename), "w") as cssfile:
        cssfile.write(cleancss)
        cssfile.close


def copy_public_to_user_folder(editorform, publicfolder, newcssfolder):
    if not os.path.exists(newcssfolder):
        os.mkdir(newcssfolder)
    copycssfile = os.path.join(
        publicfolder, f"{secure_filename(editorform.cssname.data)}.css"
    )
    APP.logger.info(f"copying file:{copycssfile} to folder:{newcssfolder}")
    shutil.copy(copycssfile, newcssfolder)


def make_public_theme(editorform, current_distribusi):
    try:
        distribusi = Distribusis.query.filter_by(
            distribusiname=current_distribusi
        ).first()
        distribusi.publictheme = secure_filename(editorform.cssname.data)
        db.session.commit()

    except InvalidRequestError:
        db.session.rollback()
        editorform.public.errors.append("Something went wrong!")
    except DataError:
        db.session.rollback()
        editorform.public.errors.append("Invalid Entry")
    except InterfaceError:
        db.session.rollback()
        editorform.public.errors.append("Error connecting to the database")
    except DatabaseError:
        db.session.rollback()
        editorform.public.errors.append("Error connecting to the database")


def render_distribusi_template(current_distribusi):
    uploadform = UploadForm()
    distribusiform = DistribusiForm()
    themeform = ThemeForm()
    publicthemeform = PublicThemeForm()
    publicthemeform.publicthemes.choices = DistribusisInfo.public_themes()
    selectorform = SelectorForm()

    files_uploaded = UserHelper.is_zip_uploaded(current_distribusi)
    distribusi_live = UserHelper.is_distribusi_live(current_distribusi)
    css_selected = True
    selectorvisible = False
    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


def render_editor_template(editorform, current_distribusi):
    html_placeholder = get_html_placeholder()

    css_placeholder = get_css_placeholder(current_distribusi)
    editorform.css.data = css_placeholder

    files_uploaded = UserHelper.is_zip_uploaded(current_distribusi)
    distribusi_live = UserHelper.is_distribusi_live(current_distribusi)
    template = render_template(
        "editor.html",
        files_uploaded=files_uploaded,
        distribusi_live=distribusi_live,
        editorform=editorform,
        html_placeholder=html_placeholder,
    )
    return template


def get_css_placeholder(current_distribusi):
    css_placeholder = "Try out your CSS here"
    distribusi = Distribusis.query.filter_by(
        distribusiname=current_distribusi
    ).first()
    if distribusi is not None and distribusi.publictheme is not None:
        css_placeholder = get_public_css_file(distribusi)
    else:
        with open("themes/editor/placeholder.css") as f:
            css_placeholder = f.read()
    return css_placeholder


def get_html_placeholder():
    html_placeholder = "Write some test HTML here"
    with open("themes/editor/placeholder.html") as f:
        html_placeholder = f.read()
    return html_placeholder


def get_public_css_file(distribusi):
    css_placeholder = ""
    publicthemefolder = os.path.join(
        "themes/publicthemes", distribusi.distribusiname
    )
    for filename in os.listdir(publicthemefolder):
        if filename.endswith(".css"):
            cssfile = os.path.join(publicthemefolder, filename)
        with open(cssfile) as f:
            css_placeholder = f.read()
    return css_placeholder