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 sqlalchemy import exc, update
import werkzeug.exceptions
import wtforms
from wtforms.fields import EmailField
from wtforms.widgets import NumberInput
import pprint

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
import hra.lib as lib


@html.WrapAfterBuilder_decorator
def BasePage(b, content, head=lambda x:None, limited_size=True, sticky_head=True):
    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'))
        b(head)
    with b.body() as body:
        with b.header(_class=f"flavor-{config.WEB_FLAVOR}"):
            with b.div(_class="content content_limited" if limited_size else "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", _class="nav-wrapper-sticky" if sticky_head else ""):
            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.print())
            else:
                b(user.print())
    return b.root_tag


def right_for_game(game):
    if g.org:
        return True
    if g.user is None:
        return False
    return db.get_session().query(db.Team).filter_by(game_id=game.game_id, user_id=g.user.id).count() > 0


def right_for_team(team):
    if g.org:
        return True
    if g.user is None:
        return False
    return team.user_id == g.user.id


def right_for_step(game):
    if right_for_game(game):
        if g.org:
            if game.step_mode == db.StepMode.org:
                return True
        if game.step_mode == db.StepMode.user:
            return True
    return False



def game_link(game):
    b = html.Builder()
    with b.line():
        if game is None:
            b("-")
        else:
            b.a(href=app.url_for(web_game.__name__, game_id=game.game_id))(game.print())
    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():
        try:
            lib.create_user(f.username.data, f.passwd.data)
        except lib.UsernameExist:
            flash("Uživatelské jméno již existuje")
        else:
            db.get_session().commit()
            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:
        teams = db.get_session().query(db.Team).filter_by(user_id=g.user.id).order_by(db.Team.game_id).all()
        games = []
        for t in teams:
            if len(games) == 0 or games[-1].game_id != t.game_id:
                games.append(t.game)

        b.line().h3("Token")
        b.line().p().b(f"Váš token je: {g.user.token}")
        b.line().h3("Vaše hry")
        for game in games:
            b.line().p(game_link(game))
    else:
        b.line().p("Přihlaste se, prosím.")

    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()
    moves = ses.query(db.Move).filter_by(game_id=game_id, round=game.current_round).order_by(db.Move.team_id).all()
    assert len(teams) == len(moves)

    if game is None:
        raise werkzeug.exceptions.NotFound()
    if not right_for_game(game):
        raise werkzeug.exceptions.Forbidden()

    b = BasePage()
    b.h2("Hra ", game.print())
    with b.line().p("Aktuální kolo: "):
        if game.working_on_next_state:
            b.b()(game.current_round, "++")
        else:
            b(game.current_round)
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Id")
            b.line().th()("User")
            b.line().th()("Bodů")
            b.line().th()("Akce")
        for team, move in zip(teams, moves):
            with b.tr():
                b.line().td()(team.team_id)
                b.line().td()(user_link(team.user),": ", team.name)
                b.line().td()(move.points)
                with b.td():
                    with b.div(_class="btn-group", role="group"):
                        if right_for_team(team):
                            b.a(_class="btn btn-xs btn-primary", href=app.url_for(web_game_view.__name__, game_id=game.game_id, team_id=team.team_id))("Zobrazit hru")
                        if g.org:
                            b.a(_class="btn btn-xs btn-default", href=app.url_for(web_org_game_userchange.__name__, game_id=game.game_id, team_id=team.team_id))("Změnit uživatele")

    with b.div(_class="btn-gruser_idoup", role="group"):
        if right_for_step(game):
            with b.form(method="POST", _class="btn-group", action=app.url_for(web_game_step.__name__, game_id=game_id)):
                b.button(_class="btn btn-primary", type="submit", name="su", value="yes")("Krok")

    if g.org:
        b.h3("Aktuální konfigurace")
        b.p().pre(pprint.pformat(game.get_configuration()))
    return b.print_file()

@app.route("/game/<int:game_id>/step", methods=['POST'])
def web_game_step(game_id):
    ses = db.get_session()
    game = ses.query(db.Game).filter_by(game_id=game_id).one_or_none()
    if game is None:
        raise werkzeug.exceptions.NotFound()
    if not right_for_step(game):
        raise werkzeug.exceptions.Forbidden()

    lib.game_step(game_id)

    return redirect(app.url_for(web_game.__name__, game_id=game_id))

@app.route("/game/<int:game_id>/view", methods=['GET'])
@app.route("/game/<int:game_id>/view/<int:team_id>", methods=['GET'])
def web_game_view(game_id, team_id=None):
    ses = db.get_session()
    game = ses.query(db.Game).filter_by(game_id=game_id).one_or_none()
    if game is None:
        raise werkzeug.exceptions.NotFound()
    if not right_for_game(game):
        raise werkzeug.exceptions.Forbidden()
    if team_id is not None:
        team = ses.query(db.Team).filter_by(game_id=game_id, team_id=team_id).one_or_none()
        if game is None:
            raise werkzeug.exceptions.NotFound()
        if not right_for_team(team):
            raise werkzeug.exceptions.Forbidden()
    else:
        team = None

    wl = get_wlogic(game)
    state = game.current_state()

    if not hasattr(wl, "view"):
        raise werkzeug.exceptions.NotFound()

    if state is None:
        raise werkzeug.exceptions.NotFound()

    return wl.view(state, team)




@app.route("/org/games")
def web_org_games():
    games = db.get_session().query(db.Game).order_by(db.Game.game_id).all()
    b = BasePage()
    b.h2("Hry")
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Id: Jméno")
            b.line().th()("Kolo")
            b.line().th()("Akce")
        for g in games:
            with b.tr():
                b.line().td()(g.print())
                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()
    teams = db.get_session().query(db.Team).all()
    games_for_user = {u.id: set() for u in users}
    for t in teams:
        if t.user_id is not None:
            games_for_user[t.user_id].add(t.game)
    b = BasePage()
    b.h2("Uživatelé")
    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()(user_link(u))
                with b.td().ul():
                    for g in games_for_user[u.id]:
                        b.line().li(game_link(g))
                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()
    teams = db.get_session().query(db.Team).filter_by(user_id=user_id).order_by(db.Team.game_id).all()
    b = BasePage()
    b.line().h2("Uživatel ", user.print())
    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")
    b.h3("Týmy")
    with b.p().table(_class="data full"):
        with b.thead():
            b.line().th()("Hra")
            b.line().th()("Jméno z pohledu týmu")
            b.line().th()("Číslo týmu")
        for team in teams:
            with b.tr():
                b.line().td()(game_link(team.game))
                b.line().td()(team.name)
                b.line().td()(team.team_id)
    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('/')

from hra.web.game import get_wlogic, wlogic_by_mode