from flask import render_template, flash, redirect, url_for, request, abort, send_file
from flask_login import login_user, logout_user, current_user, login_required
from sqlalchemy import and_
from app import app, db
from app.models import Player, Game, Role, GamePlayer, Objective, ObjectiveMinimalEncoder, LocationEncoder
from app.forms import LoginForm, RegistrationForm, CreateGameForm, ObjectiveForm
import json
import qrcode
from io import BytesIO

@app.route('/')
@app.route('/index')
@login_required
def index():
    return render_template("index.html", title='Home')

@app.route('/login', methods=['GET', 'POST'])
def login():
    if current_user.is_authenticated:
        return redirect(url_for('index'))
    form = LoginForm()
    if form.validate_on_submit():
        player = Player.query.filter_by(name=form.username.data).first()
        if player is None or not player.check_password(form.password.data):
            flash('Invalid username or password')
            return redirect(url_for('login'))
        login_user(player, remember=form.remember_me.data)
        return redirect(url_for('index'))
    return render_template('login.html', title='Sign In', form=form)

@app.route('/logout')
@login_required
def logout():
    logout_user()
    return redirect(url_for('index'))

@app.route('/register', methods=['GET', 'POST'])
def register():
    if current_user.is_authenticated:
        return redirect(url_for('index'))
    form = RegistrationForm()
    if form.validate_on_submit():
        player = Player(name=form.username.data)
        player.set_password(form.password.data)
        player.set_auth_hash()
        db.session.add(player)
        db.session.commit()
        flash('Congratulations, you are now a registered user!')
        return redirect(url_for('login'))
    return render_template('register.html', title='Register', form=form)

@app.route('/create_game', methods=['GET', 'POST'])
@login_required
def create_game():
    print(current_user.is_authenticated)
    form = CreateGameForm()
    if form.validate_on_submit():
        game = Game(name=form.game_name.data, start_time=form.start_time.data, end_time=form.end_time.data)
        game.game_players.append(GamePlayer(player=current_user, role=Role['owner'])) #check if this works, otherwise use 'owner'
        db.session.add(game)
        db.session.commit()
        flash(f"'{game.name}' had been created!")
        return redirect(url_for('game_dashboard', game_name=game.name))
    return render_template('create_game.html', title='Create Game', form=form)

@app.route('/game/<game_name>/dashboard')
@login_required
def game_dashboard(game_name):
    #game = Game.query.filter(Game.game_players.any(and_(GamePlayer.player.has(Player.name == current_user.name), GamePlayer.role == 'owner'))).first_or_404()
    game = Game.query.filter_by(name = game_name).first_or_404()
    if not is_game_owner(game): abort(403)
    return render_template('game_dashboard.html', title = 'Game Dashboard', game=game, json=json, objective_encoder=ObjectiveMinimalEncoder, location_encoder=LocationEncoder)

@app.route('/game/<game_name>/player/<player_name>')
@login_required
def game_player(game_name, player_name):
    return redirect(url_for('indsex'))

def is_game_owner(game):
    return current_user in [gameplayer.player for gameplayer in game.game_players if gameplayer.role == Role.owner]

def is_objective_owner(objective):
    return current_user in [gameplayer.player for gameplayer in objective.game.game_players if gameplayer.role == Role.owner]

@app.route('/game/<game_name>/add_objective', methods=['GET', 'POST'])
@login_required
def add_objective(game_name):
    game = Game.query.filter_by(name = game_name).first_or_404()
    if not is_game_owner(game): abort(403)
    form = ObjectiveForm()
    objective = Objective(name='', latitude=52.0932, longitude=5.12405)
    if form.validate_on_submit():
        objective = Objective(name=form.objective_name.data, longitude=form.longitude.data, latitude=form.latitude.data)
        objective.set_hash()
        game.objectives.append(objective)
        db.session.commit()
        flash(f"Objective has been added!")
        return redirect(url_for('game_dashboard', game_name=game.name))
    return render_template('objective.html', title=f'Add Objective for {game_name}', form=form, objective=objective, owner=True)

def generate_objective_qr_code(objective):
    qr = qrcode.QRCode(
        version=None,
        error_correction=qrcode.constants.ERROR_CORRECT_M,
        box_size=30,
        border=4,
    )
    qr.add_data(url_for('objective', objective_hash=objective.hash, _external=True))
    qr.make(fit=True)
    return qr.make_image(fill_color='black', back_color='white')

# Source: https://stackoverflow.com/questions/7877282/how-to-send-image-generated-by-pil-to-browser
def serve_pil_image(pil_img):
    img_io = BytesIO()
    pil_img.save(img_io, 'PNG', quality=70)
    img_io.seek(0)
    return send_file(img_io, mimetype='image/png')

@app.route('/objective/<objective_hash>/qrcode.png')
@login_required
def objective_qrcode(objective_hash):
    objective = Objective.query.filter_by(hash = objective_hash).first_or_404()
    if not is_objective_owner(objective): abort(403)
    img = generate_objective_qr_code(objective)
    return serve_pil_image(img)

@app.route('/objective/<objective_hash>', methods=['GET', 'POST'])
@login_required
def objective(objective_hash):
    objective = Objective.query.filter_by(hash = objective_hash).first_or_404()
    owner = is_objective_owner(objective)
    qrcode = generate_objective_qr_code(objective) if owner else None
    form = ObjectiveForm()
    if form.submit.data and form.validate() and owner:
        objective.name = form.objective_name.data
        objective.longitude = form.longitude.data
        objective.latitude = form.latitude.data
        db.session.commit()
    return render_template('objective.html', title='Objective view', objective=objective, owner=owner, form=form, qrcode=qrcode)

@app.route('/objective/<objective_hash>/delete', methods=['GET'])
@login_required
def objective_delete(objective_hash):
    objective = Objective.query.filter_by(hash = objective_hash).first_or_404()
    if not is_objective_owner(objective): abort(403)
    if is_objective_owner(objective):
        db.session.delete(objective)
        db.session.commit()
    return redirect(url_for('game_dashboard', game_name=objective.game.name))