from flask import Flask, redirect, flash, session, g, request, get_flashed_messages
from wtforms import Form, BooleanField, StringField, PasswordField, validators, SubmitField, IntegerField, DateTimeField
from wtforms.validators import ValidationError
from flask_wtf import FlaskForm
from flask_bootstrap import Bootstrap
import time
from datetime import datetime
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy import exc, update
import hashlib
import bcrypt
import os
import werkzeug.exceptions
import wtforms
from wtforms.fields import EmailField
from wtforms.widgets import NumberInput

import hra.config as config
import hra.web.html as html
import hra.db as db
from hra.web import app
import hra.web.jinja_mac as jinja_mac
from hra.util import hash_passwd

@html.WrapAfterBuilder_decorator
def BasePage(b, content):
    b.current_tag = html.Tag(b, "html", [])
    b.root_tag = b.current_tag
    with b.head():
        b.title()("KSP hra")
        b.meta(name="viewport", content="width=device-width, initial-scale=1.0")
        b.link(rel="stylesheet", href=app.url_for('static', filename='bootstrap.min.css'), type='text/css', media="all")
        b.link(rel="stylesheet", href=app.url_for('static', filename='ksp-mhd.css'), type='text/css', media="all")
        b.link(rel="icon", type="image/png", sizes="16x16", href="static/favicon.ico")
        b.link(rel="shortcut icon", href=app.url_for('static', filename='img/favicon.ico'))
    with b.body() as body:
        with b.header(_class=f"flavor-{config.WEB_FLAVOR}"):
            with b.div(_class="content"):
                with b.a(href="/", title="Na hlavní stránku"):
                    b.img(src=app.url_for('static', filename='hippo.png'), style="width: 60px;height: auto;", alt="KSP")
                b.h1()("Hra na soustředění KSP")
        with b.div(id="nav-wrapper"):
            with b.nav(id="main-menu", _class="content"):
                for item in g.menu:
                    b.a(href=item.url)(item.name)
                if g.user:
                    b.a(_class="right", href="/")(f"Přihlášen: {g.user.username}")
                    b.a(_class="right", href="/logout")(f"Odhlásit")
                else:
                    b.a(_class="right", href="/login")(f"Přihlásit")
                    b.a(_class="right", href="/registration")(f"Registrovat")
        with b.main():
            messages = get_flashed_messages(with_categories=True)
            if messages:
                for category, message in messages:
                    if category == "message":
                        category = "warning"
                    b.div(_class=f"alert alert-{category}", role="alert")(message)
            b(*content)


class OptionalIntField(wtforms.IntegerField):
    widget = NumberInput()

    def process_formdata(self, valuelist):
        self.data = None
        if valuelist:
            if valuelist[0]:
                try:
                    self.data = int(valuelist[0])
                except ValueError:
                    raise wtforms.ValidationError('Nejedná se o číslo.')

def user_link(user):
    b = html.Builder()
    with b.line():
        if user is None:
            b("-")
        else:
            if g.org:
                b.a(href=app.url_for(web_org_user.__name__, user_id=user.id))(user.username)
            else:
                b(user.username)
    return b.root_tag
        


class RegistrationForm(FlaskForm):
    username = StringField('Jméno týmu', [validators.Length(min=2, max=25), validators.DataRequired()])
    captcha = StringField('Captcha', validators=[validators.DataRequired()])
    passwd = PasswordField('Heslo', [
        validators.DataRequired(),
        validators.EqualTo('confirm', message='Passwords must match')
    ])
    confirm = PasswordField('Heslo znovu', validators=[validators.DataRequired()])
    submit = SubmitField("Založit")

    def validate_captcha(form, field):
        if field.data != config.CAPTCHA:
            raise ValidationError("Chyba!")


class LoginForm(FlaskForm):
    username = StringField('Jméno týmu', [validators.DataRequired()])
    passwd = PasswordField('Heslo', [validators.DataRequired()])
    submit = SubmitField("Přihlásit")



@app.route("/registration", methods=['GET', 'POST'])
def registration():
    f = RegistrationForm()
    if f.validate_on_submit():
        u = db.User(org=False, username=f.username.data, passwd=hash_passwd(f.passwd.data))
        u.gen_token()
        try:
            db.get_session().add(u)
            db.get_session().commit()
        except exc.IntegrityError:
            flash("Uživatelské jméno již existuje")
        else:
            flash("Přidán nový uživatel.", 'success')
            return redirect("login")

    b = BasePage()
    b(jinja_mac.quick_form(f, form_type='horizontal'))
    return b.print_file()

@app.route("/login", methods=['GET', 'POST'])
def login():
    f = LoginForm()
    if f.validate_on_submit():
        p_hash=hash_passwd(f.passwd.data)
        user = db.get_session().query(db.User).filter_by(username=f.username.data).one_or_none()
        print(user, p_hash)
        if user and user.passwd == p_hash:
            session.clear()
            session['uid'] = user.id
            flash("Přihlášení hotovo.", 'success')
            return redirect("/")
        flash("Chybné jméno nebo heslo.", 'danger')

    b = BasePage()
    b(jinja_mac.quick_form(f, form_type='horizontal'))
    return b.print_file()


@app.route("/logout")
def logout():
    session.clear()
    return redirect('/')


@app.template_filter()
def none_as_minus(x):
    return x if x is not None else '-'


@app.template_filter()
def round_points(x):
    if x is None:
        return None
    return round(x,3)


@app.template_filter()
def print_time(t):
    if t == None:
        return "-"
    return ("-" if t<0 else "") + str(abs(t)//1000//60) + ":" + ("00{0:d}".format(abs(t)//1000%60))[-2:]




@app.route("/", methods=['GET', 'POST'])
def web_index():
    b = BasePage()
    if g.user:
        with b.p():
            b(f"Váš token je: {g.user.token}")
    return b.print_file()

@app.route("/game/<int:game_id>", methods=['GET'])
def web_game(game_id):
    ses = db.get_session()
    game = ses.query(db.Game).filter_by(game_id=game_id).one_or_none()
    teams = ses.query(db.Team).filter_by(game_id=game_id).order_by(db.Team.team_id).all()
    if game is None:
        raise werkzeug.exceptions.NotFound()

    b = BasePage()
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Id")
            b.line().th()("User")
            if g.org:
                b.line().th()("Akce")
        for team in teams:
            with b.tr():
                b.line().td()(team.team_id)
                b.line().td()(user_link(team.user),": ", team.name)
                if g.org:
                    with b.td():
                        with b.div(_class="btn-group", role="group"):
                            b.a(_class="btn btn-xs btn-primary", href=app.url_for(web_org_game_userchange.__name__, game_id=game.game_id, team_id=team.team_id))("Změnit uživatele")
                        #b.a(_class="btn btn-xs btn-primary", href=app.url_for(web_game.__name__, game_id=g.game_id))("Detail")

    return b.print_file()

@app.route("/org/games")
def web_org_games():
    games = db.get_session().query(db.Game).order_by(db.Game.game_id).all()
    b = BasePage()
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Id")
            b.line().th()("Kolo")
            b.line().th()("Akce")
        for g in games:
            with b.tr():
                b.line().td()(g.game_id)
                with b.line().td():
                    if g.working_on_next_state:
                        b.b()(g.current_round, "++")
                    else:
                        b(g.current_round)
                with b.td():
                    b.a(_class="btn btn-xs btn-primary", href=app.url_for(web_game.__name__, game_id=g.game_id))("Detail")
    return b.print_file()

class GameUserchangeForm(FlaskForm):
    name = StringField("Jméno hry z pohledu týmu")
    set_no_user = SubmitField("Bez uživatele")
    submit_no_change = wtforms.SubmitField("Bez změny", render_kw={"style": "display: none"})


@app.route("/org/game/<int:game_id>/team/<int:team_id>/change_user", methods=['GET', 'POST'])
def web_org_game_userchange(game_id, team_id):
    ses = db.get_session()
    game = ses.query(db.Game).filter_by(game_id=game_id).one_or_none()
    team_to_edit = ses.query(db.Team).filter_by(game_id=game_id, team_id=team_id).one_or_none()
    teams = ses.query(db.Team).filter_by(game_id=game_id).order_by(db.Team.team_id).all()
    users = db.get_session().query(db.User).order_by(db.User.id).all()
    if game is None or team_to_edit is None:
        raise werkzeug.exceptions.NotFound()
    teams_by_user = {u.id:[] for u in users}
    for t in teams:
        if t.user_id is not None:
            teams_by_user[t.user_id].append(t)

    form = GameUserchangeForm(obj=team_to_edit)
    if form.validate_on_submit():
        team_to_edit.name = form.name.data
        if "submit_no_change" not in request.form:
            team_to_edit.user_id = None
            for u in users:
                if f"set_user_{u.id}" in request.form:
                    team_to_edit.user_id = u.id
        try:
            ses.commit()
        except exc.IntegrityError:
            flash("Duplicitní přiřazení", 'danger')
            ses.rollback()
        else:
            flash("Uživatel změněn", 'success')
            return redirect(app.url_for(web_game.__name__, game_id=game_id))

    b = BasePage()
    with b.form(action="", method="POST", _class="form form-horizontal", role="form"):
        b(form.csrf_token)
        b(form.submit_no_change)
        with b.div(_class="form-row"):
            b(jinja_mac.form_field(form.name, size=8))
        with b.p().table(_class="data full"):
            with b.thead():
                b.line().th()("Username")
                b.line().th()("Přiřazení")
                b.line().th()("Akce")
            for u in users:
                with b.tr():
                    b.line().td(user_link(u))
                    with b.td():
                        if len(teams_by_user[u.id]):
                            with b.ul():
                                for t in teams_by_user[u.id]:
                                    b.li(f"{t.team_id} -> {t.name}")
                    b.line().td().input(_class="btn btn-danger" if u.id == team_to_edit.user_id else "btn btn-primary", _id="set_participation_state", name=f"set_user_{u.id}", type="submit", value="Přiřadit účtu")
        b(jinja_mac.form_field(form.set_no_user))
    return b.print_file()




@app.route("/org/users")
def web_org_users():
    users = db.get_session().query(db.User).order_by(db.User.id).all()
    b = BasePage()
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Username")
            b.line().th()("Hry")
            b.line().th()("Akce")
        for u in users:
            with b.tr():
                b.line().td()(u.username)
                b.line().td()
                with b.td():
                    with b.div(_class="btn-group", role="group"):
                        b.a(_class="btn btn-xs btn-primary", href=app.url_for(web_org_user.__name__, user_id=u.id))("Detail")
    return b.print_file()

@app.route("/org/user/<int:user_id>", methods=['GET', 'POST'])
def web_org_user(user_id):
    user = db.get_session().query(db.User).filter_by(id=user_id).one_or_none()
    if not user:
        raise werkzeug.exceptions.NotFound()
    b = BasePage()
    b.line().h2("Uživatel ", user.username)
    with b.div(_class="btn-group", role="group"):
        with b.form(method="POST", _class="btn-group", action=app.url_for(web_org_user_su.__name__, user_id=user.id)):
            b.button(_class="btn btn-default", type="submit", name="su", value="yes")("Převtělit")
    return b.print_file()

@app.route("/org/user/<int:user_id>/su", methods=['POST'])
def web_org_user_su(user_id):
    user = db.get_session().query(db.User).filter_by(id=user_id).one_or_none()
    session['uid'] = user.id
    flash("Uživatel vtělen!")
    return redirect('/')