{% extends "cotisations/sidebar.html" %}
{% comment %}
Re2o est un logiciel d'administration développé initiallement au rezometz. Il
se veut agnostique au réseau considéré, de manière à être installable en
quelques clics.

Copyright © 2017  Gabriel Détraz
Copyright © 2017  Goulven Kermarec
Copyright © 2017  Augustin Lemesle

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
{% endcomment %}

{% load bootstrap3 %}
{% load staticfiles%}
{% load i18n %}

{% block title %}{% trans "Invoices creation and edition" %}{% endblock %}

{% block content %}
{% bootstrap_form_errors factureform %}

<form class="form" method="post">
    {% csrf_token %}
    {% if articlesformset %}
    <h3>{% trans "Invoice's articles" %}</h3>
    <div id="form_set" class="form-group">
        {{ articlesformset.management_form }}
        {% for articlesform in articlesformset.forms %}
        <div class='product_to_sell form-inline'>
            {% trans "Article" %} : &nbsp;
            {% bootstrap_form articlesform label_class='sr-only' %}
            &nbsp;
            <button class="btn btn-danger btn-sm" id="id_form-0-article-remove" type="button">
                <span class="fa fa-times"></span>
            </button>
        </div>
        {% endfor %}
    </div>
    <input class="btn btn-primary btn-sm" role="button" value="{% trans "Add an article"%}" id="add_one">
    <p>
        {% blocktrans %}
        Total price : <span id="total_price">0,00</span> €
        {% endblocktrans %}
    </p>
    {% endif %}
    {% bootstrap_form factureform %}
    {% bootstrap_button action_name button_type='submit' icon='star' %}
</form>

{% if articlesformset %}
<script type="text/javascript">
    var prices = {};
    {% for article in articles %}
    prices[{{ article.id|escapejs }}] = {{ article.prix }};
    {% endfor %}
 
    var template = `Article : &nbsp;
        {% bootstrap_form articlesformset.empty_form label_class='sr-only' %}
        &nbsp;
        <button class="btn btn-danger btn-sm"
        id="id_form-__prefix__-article-remove" type="button">
        <span class="fa fa-times"></span>
        </button>`

    function add_article(){
        // Index start at 0 => new_index = number of items
        var new_index =
            document.getElementsByClassName('product_to_sell').length;
        document.getElementById('id_form-TOTAL_FORMS').value ++;
        var new_article = document.createElement('div');
        new_article.className = 'product_to_sell form-inline';
        new_article.innerHTML = template.replace(/__prefix__/g, new_index);
        document.getElementById('form_set').appendChild(new_article);
        add_listenner_for_id(new_index);
    }

    function update_price(){
        var price = 0;
        var product_count =
            document.getElementsByClassName('product_to_sell').length;
        var article, article_price, quantity;
        for (i = 0; i < product_count; ++i){
            article = document.getElementById(
                'id_form-' + i.toString() + '-article').value;
            if (article == '') {
                continue;
            }
            article_price = prices[article];
            quantity = document.getElementById(
                'id_form-' + i.toString() + '-quantity').value;
            price += article_price * quantity;
        }
        document.getElementById('total_price').innerHTML =
            price.toFixed(2).toString().replace('.', ',');
    }

    function add_listenner_for_id(i){
        document.getElementById('id_form-' + i.toString() + '-article')
            .addEventListener("change", update_price, true);
        document.getElementById('id_form-' + i.toString() + '-article')
            .addEventListener("onkeypress", update_price, true);
        document.getElementById('id_form-' + i.toString() + '-quantity')
            .addEventListener("change", update_price, true);
        document.getElementById('id_form-' + i.toString() + '-article-remove')
            .addEventListener("click", function(event) {
                var article = event.target.parentNode;
                article.parentNode.removeChild(article);
                document.getElementById('id_form-TOTAL_FORMS').value --;
                update_price();
            })
    }

    // Add events manager when DOM is fully loaded
    document.addEventListener("DOMContentLoaded", function() {
        document.getElementById("add_one")
            .addEventListener("click", add_article, true);
        var product_count =
            document.getElementsByClassName('product_to_sell').length;
        for (i = 0; i < product_count; ++i){
            add_listenner_for_id(i);
        }
        update_price();
    });
</script>
{% endif %}

{% endblock %}