// ==UserScript==
// @name         Se souvenir des champs remplis sur 12Train.com
// @namespace    http://tampermonkey.net/
// @version      2025-01-07
// @description  Mémorise les dates, heures, gares et passagers, pour aller plus vite.
// @author       BohwaZ
// @match        https://www.12train.com/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=12train.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var fields = [
        // IDs only, no name in inputs, weird
        '#origin',
        '#destination',
        '#departure_date',
        '#departure_hour',
        '#return_date',
        '#return_hour',
    ];

    window.addEventListener('load', () => {
        for (var i = 0; i < fields.length; i++) {
            var key = fields[i];
            var v = localStorage.getItem('_form_' + key);
            var el = document.querySelector(key);
            if (v && el) {
                el.value = v;
            }
        }

        var passengers = document.querySelector('#journey_planner_form_query_passengers');
        var passengers_saved = JSON.parse(localStorage.getItem('_form_passengers') ?? 'null');

        if (passengers && passengers_saved) {
            if (passengers_saved.length > 1) {
                var src = passengers.querySelector('.j-p-form-passenger-control-box');

                for (var j = 1; j < passengers_saved.length; j++) {
                    passengers.appendChild(src.cloneNode(true));
                }
            }

            var k = 0;

            passengers.querySelectorAll('.j-p-form-passenger-control-box').forEach (row => {
                var p = passengers_saved[k++];
                row.querySelector('.j-p-form-passenger-age').value = p.age;
                var type = row.querySelector('.rail-search-passenger-type');

                for (var dkey in p.type_dataset) {
                    type.dataset[dkey] = p.type_dataset[dkey];
                }

                type.innerHTML = p.type_value;
                row.querySelector('.j-p-form-passenger-card-control').innerHTML = p.cards;
                row.querySelectorAll('.j-p-form-passenger-card-control:has(.j-p-f-delete-card)').forEach(c => {
                    var btn = c.querySelector('.j-p-f-delete-card');
                    btn.onclick = () => c.remove();
                });

                if (k > 1) {
                    var btn = row.querySelector('.rail-search-passenger-delete');
                    row.onmousedown = (e) => {
                        if (e.target.contains(btn)) {
                            return;
                        }
                        alert('Ce passager ne peut être modifié (<== script greasemonkey).');
                        e.preventDefault();
                        return false;
                    };
                    btn.onclick = (e) => row.remove();
                }
            });
        }
    });

    window.addEventListener('beforeunload', () => {
        for (var i = 0; i < fields.length; i++) {
            var key = fields[i];
            var el = document.querySelector(key);
            if (el) {
                localStorage.setItem('_form_' + key, el.value);
            }
        }

        var passengers = null;

        document.querySelectorAll('.j-p-form-passenger-control-box').forEach(e => {
            var type = e.querySelector('.rail-search-passenger-type');
            passengers = passengers ?? [];
            var p = {
                'type_dataset': Object.assign({}, type.dataset),
                'type_value': type.innerHTML,
                'age': e.querySelector('.j-p-form-passenger-age').value,
                'cards': e.querySelector('.j-p-form-passenger-card-control').innerHTML
            };

            //console.log(p);
            passengers.push(p);
        });

        if (null !== passengers) {
            localStorage.setItem('_form_passengers', JSON.stringify(passengers));
        }
    });
})();