import json

from flask import render_template, flash, redirect, url_for, abort
from flask_login import current_user, login_required

from app import db
from app.main import bp
from app.utils import generate_qr_code, serve_pil_image, get_game_if_owner
from app.models import Objective, Role, ObjectiveEncoder
from app.main.forms import ObjectiveForm

@bp.route('/game/<game_name>/add_objective', methods=['GET', 'POST'])
@login_required
def add_objective(game_name):
    game = get_game_if_owner(game_name)
    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("Objective has been added!")
        return redirect(url_for('main.game_dashboard', game_name=game.name))
    return render_template('objective.html', title=f'Add Objective for {game_name}',
                           form=form, game=game, objective=_objective, owner=True, json=json,
                           objective_encoder=ObjectiveEncoder)

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

@bp.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 _objective.owned_by(current_user):
        abort(403)
    img = generate_qr_code(url_for('main.objective', objective_hash=_objective.hash,
                                   _external=True))
    return serve_pil_image(img)

@bp.route('/objective/<objective_hash>', methods=['GET', 'POST'])
@login_required
def objective(objective_hash):
    _objective = Objective.query.filter_by(hash=objective_hash).first_or_404()
    if current_user.role_in_game(_objective.game) == Role.bunny:
        if not _objective.game.is_active():
            flash("It's not possible to find an objective before or after a game, "
                  "or if the game is not in 'active' mode.")
            return redirect(url_for('main.game_dashboard', game_name=_objective.game.name))
        player = current_user.player_in(_objective.game)
        if not _objective in player.found_objectives:
            player.found_objectives.append(_objective)
            db.session.commit()
            if _objective.name:
                flash(f'You found objective: {_objective.name}!')
            else:
                flash('You found an objective!')
        elif _objective.name:
            flash(f"You have already found objective '{_objective.name}'")
        else:
            flash('You have already found this objective')
        return redirect(url_for('main.game_dashboard', game_name=_objective.game.name))
    if not _objective.owned_by(current_user):
        flash("Only bunnies in an objective's game can find objectives!")
        abort(403)

    qrcode = generate_qr_code(_objective)
    form = ObjectiveForm()
    form.old_name = _objective.name
    if form.submit.data and form.validate():
        _objective.name = form.objective_name.data
        _objective.longitude = form.longitude.data
        _objective.latitude = form.latitude.data
        db.session.commit()
        return redirect(url_for('main.game_dashboard', game_name=_objective.game.name))
    return render_template('objective.html', title='Objective view',
                           form=form, game=_objective.game, objective=_objective, owner=True,
                           qrcode=qrcode, json=json, objective_encoder=ObjectiveEncoder)