/**
 * 123VTC — vtc-distance.js
 * ─────────────────────────────────────────────────────────────────────────────
 * Calcule automatiquement la distance (km) entre le point de départ et
 * l'arrivée via l'API Google Maps, puis estime le prix selon la grille
 * tarifaire. Met à jour le champ caché `distance_km` avant la soumission.
 *
 * INSTALLATION
 * ────────────
 * 1. Charger le script dans functions.php :
 *
 *    add_action('wp_enqueue_scripts', function () {
 *        // Remplacez YOUR_GOOGLE_MAPS_API_KEY par votre clé
 *        wp_enqueue_script(
 *            'google-maps',
 *            'https://maps.googleapis.com/maps/api/js'
 *                . '?key=YOUR_GOOGLE_MAPS_API_KEY'
 *                . '&libraries=places'
 *                . '&callback=vtcInitMaps',
 *            [],
 *            null,
 *            true   // chargé dans le footer
 *        );
 *        wp_enqueue_script(
 *            'vtc-distance',
 *            get_template_directory_uri() . '/js/vtc-distance.js',
 *            ['google-maps'],
 *            '1.0.0',
 *            true
 *        );
 *    });
 *
 * 2. Ajouter ces champs dans votre formulaire HTML :
 *
 *    <input type="text"   id="vtc_pickup"       name="pickup"       required>
 *    <input type="text"   id="vtc_dropoff"      name="dropoff"      required>
 *    <input type="date"   id="vtc_date"         name="reservation_date" required>
 *    <input type="time"   id="vtc_time"         name="reservation_time" required>
 *    <input type="hidden" id="vtc_distance_km"  name="distance_km"  value="0">
 *
 *    <!-- Zone d'affichage de l'estimation (optionnel mais recommandé) -->
 *    <div id="vtc_price_preview"></div>
 *
 * ─────────────────────────────────────────────────────────────────────────────
 */

/* ─── Grille tarifaire (doit correspondre à functions.php) ─────────────────── */
var VTC_RATES = {
    matin:   1.80,  // 06h–10h
    journee: 1.50,  // 10h–16h
    soir:    1.80,  // 16h–22h
    nuit:    1.90,  // 22h–06h
    special: 1.90,  // Dimanche & jours fériés
    minimum: 20.00
};

/* ─── Jours fériés français ─────────────────────────────────────────────────
   Recalculés côté JS pour l'aperçu uniquement.
   Le calcul officiel (et binding) reste dans functions.php côté serveur.       */
function vtcGetEaster(year) {
    var a = year % 19, b = Math.floor(year / 100), c = year % 100;
    var d = Math.floor(b / 4), e = b % 4, f = Math.floor((b + 8) / 25);
    var g = Math.floor((b - f + 1) / 3);
    var h = (19 * a + b - d - g + 15) % 30;
    var i = Math.floor(c / 4), k = c % 4;
    var l = (32 + 2 * e + 2 * i - h - k) % 7;
    var m = Math.floor((a + 11 * h + 22 * l) / 451);
    var month = Math.floor((h + l - 7 * m + 114) / 31) - 1; // 0-based
    var day   = ((h + l - 7 * m + 114) % 31) + 1;
    return new Date(year, month, day);
}

function vtcIsPublicHoliday(date) {
    var y = date.getFullYear();
    var easter = vtcGetEaster(y);
    var d = function (m, day) { return new Date(y, m - 1, day); };
    var add = function (base, days) {
        var r = new Date(base); r.setDate(r.getDate() + days); return r;
    };
    var fmt = function (dt) {
        return dt.getFullYear() + '-'
            + String(dt.getMonth() + 1).padStart(2, '0') + '-'
            + String(dt.getDate()).padStart(2, '0');
    };
    var target = fmt(date);
    var holidays = [
        d(1,1), add(easter,1), d(5,1), d(5,8), add(easter,39),
        add(easter,49), d(7,14), d(8,15), d(11,1), d(11,11), d(12,25)
    ];
    return holidays.some(function (h) { return fmt(h) === target; });
}

/* ─── Calcul du tarif ────────────────────────────────────────────────────── */
function vtcGetRate(dateStr, timeStr) {
    if (!dateStr || !timeStr) return null;
    var date  = new Date(dateStr);
    var hour  = parseInt(timeStr.split(':')[0], 10);
    var isSun = date.getDay() === 0;
    var isFer = vtcIsPublicHoliday(date);

    if (isSun || isFer) return { rate: VTC_RATES.special, label: isSun ? 'Dimanche' : 'Jour férié' };
    if (hour >=  6 && hour < 10) return { rate: VTC_RATES.matin,   label: 'Matin (6h–10h)'    };
    if (hour >= 10 && hour < 16) return { rate: VTC_RATES.journee, label: 'Journée (10h–16h)'  };
    if (hour >= 16 && hour < 22) return { rate: VTC_RATES.soir,    label: 'Soir (16h–22h)'     };
    return { rate: VTC_RATES.nuit, label: 'Nuit (22h–6h)' };
}

function vtcCalculatePrice(distanceKm, dateStr, timeStr) {
    var info  = vtcGetRate(dateStr, timeStr);
    if (!info) return null;
    var price = Math.round(distanceKm * info.rate * 100) / 100;
    return {
        price:     Math.max(VTC_RATES.minimum, price),
        rate:      info.rate,
        label:     info.label,
        isMinimum: price < VTC_RATES.minimum
    };
}

/* ─── Mise à jour de l'aperçu du prix ────────────────────────────────────── */
function vtcUpdatePreview(distanceKm) {
    var preview  = document.getElementById('vtc_price_preview');
    if (!preview) return;

    var dateStr = (document.getElementById('vtc_date') || {}).value || '';
    var timeStr = (document.getElementById('vtc_time') || {}).value || '';
    var result  = vtcCalculatePrice(distanceKm, dateStr, timeStr);

    if (!result) {
        preview.innerHTML = '';
        return;
    }

    var priceStr  = result.price.toFixed(2).replace('.', ',') + '\u00a0€';
    var minNote   = result.isMinimum
        ? '<span class="vtc-preview__note">(tarif minimum appliqué)</span>'
        : '<span class="vtc-preview__note">' + distanceKm.toFixed(1).replace('.', ',') + '\u00a0km × ' + result.rate.toFixed(2).replace('.', ',') + '\u00a0€/km</span>';

    preview.innerHTML =
        '<div class="vtc-preview">'
        +   '<div class="vtc-preview__label">' + result.label + '</div>'
        +   '<div class="vtc-preview__price">' + priceStr + '</div>'
        +   minNote
        + '</div>';
}

/* ─── Google Maps : Autocomplete + Distance Matrix ───────────────────────── */
var vtcAutocompletePickup  = null;
var vtcAutocompleteDropoff = null;
var vtcDistanceService     = null;
var vtcLastDistanceKm      = 0;

window.vtcInitMaps = function () {
    var fieldPickup  = document.getElementById('vtc_pickup');
    var fieldDropoff = document.getElementById('vtc_dropoff');
    if (!fieldPickup || !fieldDropoff) return;

    var options = {
        componentRestrictions: { country: 'fr' },
        fields: ['formatted_address', 'geometry']
    };

    vtcAutocompletePickup  = new google.maps.places.Autocomplete(fieldPickup,  options);
    vtcAutocompleteDropoff = new google.maps.places.Autocomplete(fieldDropoff, options);
    vtcDistanceService     = new google.maps.DistanceMatrixService();

    vtcAutocompletePickup.addListener('place_changed',  vtcComputeDistance);
    vtcAutocompleteDropoff.addListener('place_changed', vtcComputeDistance);
};

function vtcComputeDistance() {
    var pickup  = document.getElementById('vtc_pickup');
    var dropoff = document.getElementById('vtc_dropoff');
    var hidden  = document.getElementById('vtc_distance_km');
    var preview = document.getElementById('vtc_price_preview');

    if (!pickup || !dropoff || !hidden) return;
    if (!pickup.value.trim() || !dropoff.value.trim()) return;

    // Indicateur de chargement
    if (preview) {
        preview.innerHTML = '<div class="vtc-preview vtc-preview--loading">Calcul en cours…</div>';
    }

    vtcDistanceService.getDistanceMatrix(
        {
            origins:      [pickup.value],
            destinations: [dropoff.value],
            travelMode:   google.maps.TravelMode.DRIVING,
            unitSystem:   google.maps.UnitSystem.METRIC,
            region:       'fr'
        },
        function (response, status) {
            if (status !== 'OK') {
                if (preview) {
                    preview.innerHTML = '<div class="vtc-preview vtc-preview--error">Impossible de calculer la distance. Vérifiez les adresses.</div>';
                }
                hidden.value = '0';
                return;
            }

            var element = response.rows[0].elements[0];
            if (element.status !== 'OK') {
                if (preview) {
                    preview.innerHTML = '<div class="vtc-preview vtc-preview--error">Trajet introuvable entre ces deux adresses.</div>';
                }
                hidden.value = '0';
                return;
            }

            // Distance en km (arrondie à 1 décimale)
            var meters    = element.distance.value;
            var distanceKm = Math.round(meters / 100) / 10; // ex: 12340m → 12.3km

            vtcLastDistanceKm = distanceKm;
            hidden.value      = distanceKm;

            vtcUpdatePreview(distanceKm);
        }
    );
}

/* ─── Recalcul du prix si date/heure changent ────────────────────────────── */
function vtcOnDateTimeChange() {
    if (vtcLastDistanceKm > 0) {
        vtcUpdatePreview(vtcLastDistanceKm);
    }
}

/* ─── Vérification avant soumission ─────────────────────────────────────── */
function vtcValidateBeforeSubmit(e) {
    var hidden = document.getElementById('vtc_distance_km');
    if (!hidden || parseFloat(hidden.value) <= 0) {
        e.preventDefault();
        alert('Veuillez sélectionner le départ et l\'arrivée dans les suggestions pour calculer la distance.');
        return false;
    }
}

/* ─── Initialisation des écouteurs ────────────────────────────────────────── */
document.addEventListener('DOMContentLoaded', function () {
    var dateField = document.getElementById('vtc_date');
    var timeField = document.getElementById('vtc_time');
    var form      = document.querySelector('form[action*="admin-post"]');

    if (dateField) dateField.addEventListener('change', vtcOnDateTimeChange);
    if (timeField) timeField.addEventListener('change', vtcOnDateTimeChange);
    if (form)      form.addEventListener('submit', vtcValidateBeforeSubmit);
});<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://www.123vtc.com/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://www.123vtc.com/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://www.123vtc.com/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://www.123vtc.com/wp-sitemap-taxonomies-category-1.xml</loc></sitemap></sitemapindex>