/**
 * workshop.js — Taller / Service Orders for Nexus POS
 * Supports list + kanban views, filters, bitacora and role-based price hiding.
 */
var Workshop = (function() {
    'use strict';

    var API = '/pos/api/service-orders';
    var token = localStorage.getItem('pos_token');
    var orders = [];
    var catalog = [];
    var customers = [];
    var vehicles = [];
    var employees = [];
    var couriers = [];
    var branches = [];
    var currentOrderId = null;
    var currentOrder = null;
    var currentView = 'list';
    var currentPage = 1;
    var perPage = 25;

    var user = window.POS_USER || {};
    var role = (user.role || '').toLowerCase();
    var hidePrices = role === 'workshop' || role === 'mechanic';
    var perms = user.permissions || [];
    var canEdit = role === 'owner' || role === 'admin' || perms.indexOf('workshop.edit') !== -1;
    var canSell = role === 'owner' || role === 'admin' || perms.indexOf('pos.sell') !== -1;

    var COLUMNS = [
        {key: 'received', label: 'Recibido'},
        {key: 'diagnosis', label: 'Diagnóstico'},
        {key: 'waiting_parts', label: 'Espera refacciones'},
        {key: 'repair', label: 'En reparación'},
        {key: 'quality_check', label: 'Control calidad'},
        {key: 'ready', label: 'Listo'},
        {key: 'delivered', label: 'Entregado'},
    ];

    var STATUS_LABELS = {
        received: 'Recibido',
        diagnosis: 'Diagnóstico',
        waiting_parts: 'Espera refacciones',
        repair: 'En reparación',
        quality_check: 'Control calidad',
        ready: 'Listo',
        delivered: 'Entregado',
        cancelled: 'Cancelado'
    };

    var DELIVERY_LABELS = {
        pickup: 'Pasa cliente',
        delivery: 'Envío a domicilio',
        courier: 'Motociclista'
    };

    function headers() {
        return {
            'Content-Type': 'application/json',
            'Authorization': 'Bearer ' + token
        };
    }

    function fmt(n) {
        if (n == null) return '0';
        return parseFloat(n).toLocaleString('es-MX');
    }

    function fmtMoney(n) {
        if (n == null) return '$0.00';
        return '$' + parseFloat(n).toLocaleString('es-MX', {minimumFractionDigits: 2, maximumFractionDigits: 2});
    }

    function fmtDate(d) {
        if (!d) return '—';
        var dt = new Date(d);
        if (isNaN(dt.getTime())) return d;
        return dt.toLocaleDateString('es-MX', {day: '2-digit', month: '2-digit', year: 'numeric'}) + ' ' +
               dt.toLocaleTimeString('es-MX', {hour: '2-digit', minute: '2-digit', hour12: false});
    }

    function esc(s) {
        if (s == null) return '';
        var el = document.createElement('div');
        el.textContent = s;
        return el.innerHTML;
    }

    function api(method, url, body) {
        var opts = {method: method, headers: headers()};
        if (body) opts.body = JSON.stringify(body);
        return fetch(API + url, opts).then(function(r) {
            return r.json().then(function(data) {
                if (!r.ok) throw new Error(data.error || r.statusText);
                return data;
            });
        });
    }

    // ─── Init ───

    function init() {
        var savedView = localStorage.getItem('workshop_view');
        if (savedView) currentView = savedView;
        bindFilters();
        bindDeliverySelect();
        if (hidePrices) {
            var btnCatalog = document.getElementById('btnCatalog');
            if (btnCatalog) btnCatalog.style.display = 'none';
            document.querySelectorAll('.price-col').forEach(function(el) { el.style.display = 'none'; });
        }
        loadReferenceData();
        loadSummary();
        setView(currentView);
        loadOrders();
        loadCatalog();
    }

    function bindFilters() {
        ['filterBranch','filterStatus','filterDelivery','filterDirect','filterSearch'].forEach(function(id) {
            var el = document.getElementById(id);
            if (!el) return;
            el.addEventListener('change', function() { currentPage = 1; loadOrders(); });
            if (el.tagName === 'INPUT' && id === 'filterSearch') {
                el.addEventListener('keyup', debounce(function() { currentPage = 1; loadOrders(); }, 350));
            }
        });
    }

    function bindDeliverySelect() {
        var sel = document.getElementById('noDelivery');
        if (!sel) return;
        sel.addEventListener('change', function() {
            var cf = document.getElementById('courierField');
            if (cf) cf.style.display = sel.value === 'courier' ? 'block' : 'none';
        });
    }

    function debounce(fn, ms) {
        var t;
        return function() {
            clearTimeout(t);
            t = setTimeout(fn, ms);
        };
    }

    // ─── Summary ───

    function loadSummary() {
        fetch(API + '/kanban/summary', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) {
                document.getElementById('statReceived').textContent = fmt(d.received || 0);
                document.getElementById('statRepair').textContent = fmt((d.repair || 0) + (d.diagnosis || 0) + (d.waiting_parts || 0) + (d.quality_check || 0));
                document.getElementById('statReady').textContent = fmt(d.ready || 0);
                document.getElementById('statOverdue').textContent = fmt(d.overdue || 0);
            })
            .catch(function() {});
    }

    // ─── Orders loading ───

    function getFilterQuery() {
        var params = [];
        var status = document.getElementById('filterStatus').value;
        var delivery = document.getElementById('filterDelivery').value;
        var branch = document.getElementById('filterBranch').value;
        var direct = document.getElementById('filterDirect').checked;
        var q = document.getElementById('filterSearch').value.trim();
        if (status) params.push('status=' + encodeURIComponent(status));
        if (delivery) params.push('delivery_method=' + encodeURIComponent(delivery));
        if (branch) params.push('branch_id=' + encodeURIComponent(branch));
        if (direct) params.push('is_direct=true');
        if (q) params.push('q=' + encodeURIComponent(q));
        params.push('page=' + currentPage);
        params.push('per_page=' + perPage);
        return '?' + params.join('&');
    }

    function loadOrders() {
        fetch(API + getFilterQuery(), {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) {
                orders = d.data || [];
                var pagination = d.pagination || {};
                totalPages = pagination.total_pages || 1;
                if (currentView === 'list') {
                    renderList();
                    renderPagination();
                } else {
                    renderKanban();
                }
            })
            .catch(function(e) {
                console.error(e);
                document.getElementById('listBody').innerHTML = '<tr><td colspan="7" style="text-align:center;padding:var(--space-4);">Error cargando órdenes</td></tr>';
            });
    }

    var totalPages = 1;

    // ─── View switching ───

    function setView(view) {
        currentView = view;
        localStorage.setItem('workshop_view', view);
        document.querySelectorAll('.view-switch__btn').forEach(function(b) {
            b.classList.toggle('is-active', b.dataset.view === view);
        });
        document.getElementById('listView').style.display = view === 'list' ? 'block' : 'none';
        document.getElementById('kanbanBoard').style.display = view === 'kanban' ? 'flex' : 'none';
        if (view === 'list') {
            renderList();
            renderPagination();
        } else {
            renderKanban();
        }
    }

    // ─── List view ───

    function renderList() {
        var body = document.getElementById('listBody');
        if (!orders.length) {
            body.innerHTML = '<tr><td colspan="7" style="text-align:center;padding:var(--space-4);">No se encontraron órdenes</td></tr>';
            return;
        }
        body.innerHTML = orders.map(function(o) {
            var vehicle = esc((o.vehicle_plate || '—') + ' ' + (o.vehicle_make || '') + ' ' + (o.vehicle_model || ''));
            return '<tr>' +
                '<td>' + esc(o.branch_name || '—') + '</td>' +
                '<td><strong>' + esc(o.order_number) + '</strong></td>' +
                '<td>' + esc(o.customer_name || 'Cliente general') + '</td>' +
                '<td>' + vehicle + '</td>' +
                '<td><span class="badge badge--' + esc(o.status) + '">' + esc(STATUS_LABELS[o.status] || o.status) + '</span></td>' +
                '<td class="price-col" style="text-align:right;">' + fmtMoney(o.total) + '</td>' +
                '<td><button class="btn btn--sm btn--secondary" onclick="Workshop.openDetail(' + o.id + ')">Ver</button></td>' +
                '</tr>';
        }).join('');
        if (hidePrices) {
            document.querySelectorAll('.price-col').forEach(function(el) { el.style.display = 'none'; });
        }
    }

    function renderPagination() {
        var el = document.getElementById('listPagination');
        if (totalPages <= 1) {
            el.innerHTML = '';
            return;
        }
        var html = '<button class="btn btn--sm btn--ghost" ' + (currentPage === 1 ? 'disabled' : '') + ' onclick="Workshop.goPage(' + (currentPage - 1) + ')">Anterior</button>' +
            '<span class="pagination-info">Página ' + currentPage + ' de ' + totalPages + '</span>' +
            '<button class="btn btn--sm btn--ghost" ' + (currentPage === totalPages ? 'disabled' : '') + ' onclick="Workshop.goPage(' + (currentPage + 1) + ')">Siguiente</button>';
        el.innerHTML = html;
    }

    function goPage(p) {
        if (p < 1 || p > totalPages) return;
        currentPage = p;
        loadOrders();
    }

    // ─── Kanban view ───

    function renderKanban() {
        var board = document.getElementById('kanbanBoard');
        board.innerHTML = '';
        COLUMNS.forEach(function(col) {
            var colOrders = orders.filter(function(o) { return o.status === col.key; });
            var colEl = document.createElement('div');
            colEl.className = 'kanban-column';
            colEl.innerHTML =
                '<div class="kanban-column__header">' +
                '  <span>' + esc(col.label) + '</span>' +
                '  <span class="kanban-column__count">' + colOrders.length + '</span>' +
                '</div>' +
                '<div class="kanban-column__body" id="col-' + col.key + '"></div>';
            board.appendChild(colEl);

            var body = colEl.querySelector('.kanban-column__body');
            if (!colOrders.length) {
                body.innerHTML = '<div class="empty-state" style="padding:var(--space-4);"><div class="empty-state__subtitle">Sin órdenes</div></div>';
            } else {
                colOrders.forEach(function(o) { body.appendChild(renderCard(o)); });
            }
        });
    }

    function priorityLabel(p) {
        var map = {normal: 'Normal', high: 'Alta', urgent: 'Urgente'};
        return map[p] || p;
    }

    function statusBadgeClass(status) {
        return 'badge--' + (status || 'pending');
    }

    function renderCard(o) {
        var card = document.createElement('div');
        card.className = 'kanban-card';
        card.onclick = function() { openDetail(o.id); };
        var priceHtml = hidePrices ? '' : '<span>' + fmtMoney(o.estimated_cost || o.total) + '</span>';
        card.innerHTML =
            '<div class="kanban-card__header">' +
            '  <span class="kanban-card__id">' + esc(o.order_number) + '</span>' +
            '  <span class="kanban-card__priority badge badge--' + esc(o.priority) + '">' + esc(priorityLabel(o.priority)) + '</span>' +
            '</div>' +
            '<div class="kanban-card__customer">' + esc(o.customer_name || 'Cliente general') + '</div>' +
            '<div class="kanban-card__vehicle">' + esc(o.vehicle_plate || 'Sin vehículo') + '</div>' +
            '<div class="kanban-card__meta">' +
            '  <span class="kanban-card__mechanic">🔧 ' + esc(o.employee_name || 'Sin asignar') + '</span>' +
            priceHtml +
            '</div>';
        return card;
    }

    // ─── Detail modal ───

    function openDetail(id) {
        currentOrderId = id;
        fetch(API + '/' + id, {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(o) {
                currentOrder = o;
                document.getElementById('detailTitle').textContent = 'Bitácora Orden: ' + esc(o.order_number);
                renderDetailBody(o);
                document.getElementById('detailModal').classList.add('is-open');
            })
            .catch(function(e) { alert('Error: ' + e.message); });
    }

    function renderDetailBody(o) {
        var activeTab = document.querySelector('.so-tabs__btn.is-active');
        var selectedTab = activeTab ? activeTab.dataset.tab : 'service';

        var html =
            '<div class="so-detail-header">' +
            '  <div class="so-detail-header__row"><span class="so-detail__label">Estatus:</span> <span class="badge badge--' + esc(o.status) + '">' + esc(STATUS_LABELS[o.status] || o.status) + '</span></div>' +
            '  <div class="so-detail-header__row"><span class="so-detail__label">Fecha:</span> ' + fmtDate(o.created_at) + '</div>' +
            '  <div class="so-detail-header__row"><span class="so-detail__label">Registrado por:</span> ' + esc(o.created_by_name || '—') + '</div>' +
            '  <div class="so-detail-header__row"><span class="so-detail__label">Sucursal:</span> ' + esc(o.branch_name || '—') + '</div>' +
            '</div>' +

            '<div class="so-detail-info">' +
            '  <div class="so-detail__field"><span class="so-detail__label">Cliente</span><span class="so-detail__value">' + esc(o.customer_name || '—') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Dirección</span><span class="so-detail__value">' + esc(o.customer_address || '—') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Teléfono</span><span class="so-detail__value">' + esc(o.customer_phone || '—') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Vehículo</span><span class="so-detail__value">' + esc((o.vehicle_plate || '—') + ' ' + (o.vehicle_make || '') + ' ' + (o.vehicle_model || '')) + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Vía de entrega</span><span class="so-detail__value">' + esc(DELIVERY_LABELS[o.delivery_method] || o.delivery_method || '—') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Motociclista</span><span class="so-detail__value">' + esc(o.courier_name || '—') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Mecánico</span><span class="so-detail__value">' + esc(o.employee_name || 'Sin asignar') + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Entrega estimada</span><span class="so-detail__value">' + fmtDate(o.estimated_completion) + '</span></div>' +
            '  <div class="so-detail__field"><span class="so-detail__label">Kilometraje entrada</span><span class="so-detail__value">' + fmt(o.mileage_in) + '</span></div>' +
            (hidePrices ? '' : '<div class="so-detail__field"><span class="so-detail__label">Presupuesto</span><span class="so-detail__value">' + fmtMoney(o.estimated_cost) + '</span></div>') +
            (hidePrices ? '' : '<div class="so-detail__field"><span class="so-detail__label">Total</span><span class="so-detail__value">' + fmtMoney(o.total) + '</span></div>') +
            '</div>' +

            '<div class="so-tabs">' +
            '  <button class="so-tabs__btn ' + (selectedTab === 'service' ? 'is-active' : '') + '" data-tab="service" onclick="Workshop.switchTab(\'service\')">Orden de servicio</button>' +
            '  <button class="so-tabs__btn ' + (selectedTab === 'articles' ? 'is-active' : '') + '" data-tab="articles" onclick="Workshop.switchTab(\'articles\')">Artículos</button>' +
            '</div>' +

            '<div class="so-tab-panel" id="tab-service" ' + (selectedTab === 'service' ? '' : 'style="display:none;"') + '>' +
            '  <div class="so-detail__section">' +
            '    <h3>Observaciones</h3>' +
            '    <p>' + esc(o.reception_notes || 'Sin observaciones') + '</p>' +
            '  </div>' +
            '  <div class="so-detail__section">' +
            '    <h3>Bitácora</h3>' +
            renderBitacora(o.status_history || []) +
            '  </div>' +
            '</div>' +

            '<div class="so-tab-panel" id="tab-articles" ' + (selectedTab === 'articles' ? '' : 'style="display:none;"') + '>' +
            renderArticles(o) +
            '</div>';

        document.getElementById('detailBody').innerHTML = html;

        // Footer actions
        var footer = document.getElementById('detailFooter');
        var statusHtml = canEdit ?
            '<div class="so-detail__actions" style="margin-right:auto;">' +
            '  <select class="form-input" id="statusSelect" style="width:auto;">' +
            COLUMNS.map(function(c) { return '<option value="' + c.key + '"' + (c.key === o.status ? ' selected' : '') + '>' + c.label + '</option>'; }).join('') +
            '  </select>' +
            '  <button class="btn btn--primary" onclick="Workshop.changeStatus()">Actualizar estado</button>' +
            '</div>' : '';
        footer.innerHTML = statusHtml +
            '<button class="btn btn--ghost" onclick="Workshop.closeDetailModal()">Cerrar</button>' +
            '<button class="btn btn--secondary" onclick="Workshop.printOrder()">' +
            '<svg viewBox="0 0 24 24"><polyline points="6 9 6 2 18 2 18 9"/><path d="M6 18H4a2 2 0 0 1-2-2v-5a2 2 0 0 1 2-2h16a2 2 0 0 1 2 2v5a2 2 0 0 1-2 2h-2"/><rect x="6" y="14" width="12" height="8"/></svg>' +
            'Imprimir orden</button>' +
            (canEdit && canSell && o.status === 'ready' && !o.sale_id ? '<button class="btn btn--primary" onclick="Workshop.convertToSale()">Convertir a venta</button>' : '') +
            (o.sale_id ? '<a class="btn btn--secondary" href="/pos/invoicing?sale_id=' + o.sale_id + '">Ver venta #' + o.sale_id + '</a>' : '');
    }

    function switchTab(tab) {
        document.querySelectorAll('.so-tabs__btn').forEach(function(b) { b.classList.toggle('is-active', b.dataset.tab === tab); });
        document.getElementById('tab-service').style.display = tab === 'service' ? 'block' : 'none';
        document.getElementById('tab-articles').style.display = tab === 'articles' ? 'block' : 'none';
    }

    function renderBitacora(history) {
        if (!history.length) return '<p style="color:var(--color-text-muted);">Sin movimientos</p>';
        var rows = history.map(function(h) {
            return '<tr>' +
                '<td><span class="badge badge--' + esc(h.new_status) + '">' + esc(STATUS_LABELS[h.new_status] || h.new_status) + '</span></td>' +
                '<td>' + fmtDate(h.created_at) + '</td>' +
                '<td>' + esc(h.changed_by_name || '—') + '</td>' +
                '<td>' + esc(h.notes || '—') + '</td>' +
                '</tr>';
        }).join('');
        return '<table class="data-table bitacora-table"><thead><tr><th>Estatus</th><th>Fecha</th><th>Usuario</th><th>Observaciones</th></tr></thead><tbody>' + rows + '</tbody></table>';
    }

    function renderArticles(o) {
        var partsRows = (o.items || []).map(function(it) {
            var priceCells = hidePrices ? '' :
                '<td>' + fmtMoney(it.unit_price) + '</td>';
            var actionCell = canEdit && it.status !== 'cancelled' ?
                '<td><button class="btn btn--sm btn--secondary" onclick="event.stopPropagation();Workshop.reserveItem(' + it.id + ')">Reservar</button></td>' : '<td></td>';
            return '<tr>' +
                '<td>' + esc(it.name) + '<br><small>' + esc(it.part_number || '') + '</small></td>' +
                '<td>' + fmt(it.quantity) + '</td>' +
                priceCells +
                '<td><span class="badge ' + statusBadgeClass(it.status) + '">' + esc(STATUS_LABELS[it.status] || it.status) + '</span></td>' +
                actionCell +
                '</tr>';
        }).join('');
        var partsHeader = '<tr><th>Concepto</th><th>Cant.</th>' + (hidePrices ? '' : '<th>Precio</th>') + '<th>Estado</th><th></th></tr>';

        var laborRows = (o.labor || []).map(function(l) {
            var priceCells = hidePrices ? '' : '<td>' + fmtMoney(l.hourly_rate) + '</td><td>' + fmtMoney(l.total_cost) + '</td>';
            return '<tr>' +
                '<td>' + esc(l.description) + '</td>' +
                '<td>' + fmt(l.hours) + '</td>' +
                priceCells +
                '<td><span class="badge ' + statusBadgeClass(l.status) + '">' + esc(STATUS_LABELS[l.status] || l.status) + '</span></td>' +
                '</tr>';
        }).join('');
        var laborHeader = '<tr><th>Concepto</th><th>Horas</th>' + (hidePrices ? '' : '<th>Precio/hr</th><th>Total</th>') + '<th>Estado</th></tr>';

        var addParts = canEdit ?
            '<div style="margin-top:var(--space-3);display:flex;gap:var(--space-2);">' +
            '  <input class="form-input" id="newItemSearch" placeholder="Buscar refacción por nombre/número" style="flex:1;" />' +
            '  <button class="btn btn--secondary" onclick="Workshop.addItemPlaceholder()">Agregar</button>' +
            '</div>' : '';

        var addLabor = canEdit ?
            '<div style="margin-top:var(--space-3);display:flex;gap:var(--space-2);flex-wrap:wrap;">' +
            '  <select class="form-input" id="laborCatalogSelect"><option value="">Concepto manual</option></select>' +
            '  <input class="form-input" id="laborDesc" placeholder="Descripción" style="flex:1;min-width:160px;" />' +
            '  <input class="form-input" id="laborHours" type="number" step="0.1" placeholder="Hrs" style="width:80px;" />' +
            (hidePrices ? '' : '<input class="form-input" id="laborRate" type="number" step="0.01" placeholder="$/hr" style="width:100px;" />') +
            '  <button class="btn btn--secondary" onclick="Workshop.addLabor()">Agregar</button>' +
            '</div>' : '';

        var html =
            '<div class="so-detail__section">' +
            '  <h3>Refacciones</h3>' +
            '  <table class="data-table"><thead>' + partsHeader + '</thead><tbody>' + (partsRows || '<tr><td colspan="' + (hidePrices ? 4 : 5) + '" style="text-align:center;">Sin refacciones</td></tr>') + '</tbody></table>' +
            addParts +
            '</div>' +
            '<div class="so-detail__section">' +
            '  <h3>Mano de obra</h3>' +
            '  <table class="data-table"><thead>' + laborHeader + '</thead><tbody>' + (laborRows || '<tr><td colspan="' + (hidePrices ? 3 : 5) + '" style="text-align:center;">Sin mano de obra</td></tr>') + '</tbody></table>' +
            addLabor +
            '</div>';

        // schedule labor catalog select population after DOM insertion
        setTimeout(function() {
            var sel = document.getElementById('laborCatalogSelect');
            if (!sel || sel.dataset.populated) return;
            catalog.forEach(function(c) {
                var opt = document.createElement('option');
                opt.value = JSON.stringify(c);
                opt.textContent = c.name + (hidePrices ? '' : ' ($' + fmtMoney(c.suggested_hours * c.suggested_rate).replace('$', '') + ')');
                sel.appendChild(opt);
            });
            sel.dataset.populated = '1';
            sel.onchange = function() {
                if (!sel.value) return;
                var c = JSON.parse(sel.value);
                document.getElementById('laborDesc').value = c.name;
                document.getElementById('laborHours').value = c.suggested_hours;
                if (!hidePrices) document.getElementById('laborRate').value = c.suggested_rate;
            };
        }, 0);

        return html;
    }

    function closeDetailModal() {
        document.getElementById('detailModal').classList.remove('is-open');
        currentOrderId = null;
        currentOrder = null;
    }

    // ─── Actions ───

    function changeStatus() {
        if (!currentOrderId) return;
        var newStatus = document.getElementById('statusSelect').value;
        api('PUT', '/' + currentOrderId + '/status', {status: newStatus})
            .then(function() {
                closeDetailModal();
                loadSummary();
                loadOrders();
            })
            .catch(function(e) { alert('Error: ' + e.message); });
    }

    function reserveItem(itemId) {
        api('POST', '/' + currentOrderId + '/items/' + itemId + '/reserve', {})
            .then(function() {
                alert('Refacción reservada');
                openDetail(currentOrderId);
                loadSummary();
            })
            .catch(function(e) { alert('Error: ' + e.message); });
    }

    function addItemPlaceholder() {
        var name = document.getElementById('newItemSearch').value.trim();
        if (!name) return;
        api('POST', '/' + currentOrderId + '/items', {
            name: name,
            quantity: 1,
            unit_price: 0,
            status: 'pending'
        }).then(function() {
            openDetail(currentOrderId);
        }).catch(function(e) { alert('Error: ' + e.message); });
    }

    function addLabor() {
        var desc = document.getElementById('laborDesc').value.trim();
        var hours = parseFloat(document.getElementById('laborHours').value) || 0;
        var rate = hidePrices ? 0 : parseFloat(document.getElementById('laborRate').value) || 0;
        if (!desc) return alert('Escribe una descripción');
        api('POST', '/' + currentOrderId + '/labor', {
            description: desc,
            hours: hours,
            hourly_rate: rate,
            status: 'pending'
        }).then(function() {
            document.getElementById('laborDesc').value = '';
            document.getElementById('laborHours').value = '';
            if (!hidePrices) document.getElementById('laborRate').value = '';
            openDetail(currentOrderId);
        }).catch(function(e) { alert('Error: ' + e.message); });
    }

    function convertToSale() {
        if (!currentOrderId) return;
        if (!confirm('¿Convertir esta orden en una venta? Se descontarán las refacciones reservadas del inventario.')) return;
        api('POST', '/' + currentOrderId + '/convert-to-sale', {
            payment_method: 'efectivo',
            sale_type: 'cash'
        }).then(function(r) {
            alert('Venta creada: #' + r.sale_id + ' Total: ' + fmtMoney(r.total));
            closeDetailModal();
            loadSummary();
            loadOrders();
        }).catch(function(e) { alert('Error: ' + e.message); });
    }

    function printOrder() {
        if (!currentOrderId) return;
        if (!window.NexusPrinter || !window.NexusPrinter.isConnected()) {
            var connect = confirm('No hay impresora conectada. ¿Conectar ahora?');
            if (connect) {
                window.NexusPrinter.connect().then(function(r) {
                    if (r.ok) doPrint();
                });
            }
            return;
        }
        doPrint();

        function doPrint() {
            window.NexusPrinter.printServiceOrder(currentOrderId, 80)
                .then(function(ok) {
                    if (ok) alert('Orden enviada a la impresora');
                    else alert('No se pudo imprimir');
                })
                .catch(function(e) { alert('Error: ' + e.message); });
        }
    }

    // ─── New order ───

    function openNewOrderModal() {
        populateSelect('noCustomer', customers, function(c) { return {value: c.id, text: c.name + ' (' + (c.phone || '') + ')'}; });
        populateSelect('noVehicle', vehicles, function(v) { return {value: v.id, text: v.plate + ' ' + v.make + ' ' + v.model}; });
        populateSelect('noMechanic', employees, function(e) { return {value: e.id, text: e.name}; });
        populateSelect('noCourier', couriers, function(c) { return {value: c.id, text: c.name}; });
        document.getElementById('newOrderModal').classList.add('is-open');
    }

    function closeNewOrderModal() {
        document.getElementById('newOrderModal').classList.remove('is-open');
        document.getElementById('newOrderForm').reset();
        var cf = document.getElementById('courierField');
        if (cf) cf.style.display = 'none';
    }

    function submitNewOrder() {
        var customerId = document.getElementById('noCustomer').value;
        if (!customerId) return alert('Selecciona un cliente');
        var delivery = document.getElementById('noDelivery').value;
        var payload = {
            customer_id: parseInt(customerId, 10),
            vehicle_id: parseInt(document.getElementById('noVehicle').value, 10) || null,
            employee_id: parseInt(document.getElementById('noMechanic').value, 10) || null,
            priority: document.getElementById('noPriority').value,
            estimated_completion: document.getElementById('noEstimatedCompletion').value || null,
            mileage_in: parseInt(document.getElementById('noMileage').value, 10) || null,
            reception_notes: document.getElementById('noNotes').value,
            delivery_method: delivery || null,
            courier_id: delivery === 'courier' ? (parseInt(document.getElementById('noCourier').value, 10) || null) : null,
            is_direct: document.getElementById('noDirect').checked
        };
        api('POST', '', payload).then(function() {
            closeNewOrderModal();
            loadSummary();
            loadOrders();
        }).catch(function(e) { alert('Error: ' + e.message); });
    }

    // ─── Catalog ───

    function openCatalogModal() {
        document.getElementById('catalogModal').classList.add('is-open');
        renderCatalog();
    }

    function closeCatalogModal() {
        document.getElementById('catalogModal').classList.remove('is-open');
    }

    function loadCatalog() {
        fetch(API + '/service-catalog?active_only=true', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) {
                catalog = d.data || [];
            })
            .catch(function() {});
    }

    function renderCatalog() {
        var body = document.getElementById('catalogBody');
        if (!catalog.length) {
            body.innerHTML = '<tr><td colspan="' + (hidePrices ? 3 : 5) + '" style="text-align:center;">Sin conceptos</td></tr>';
            return;
        }
        body.innerHTML = catalog.map(function(c) {
            return '<tr>' +
                '<td>' + esc(c.name) + (c.description ? '<br><small>' + esc(c.description) + '</small>' : '') + '</td>' +
                '<td>' + fmt(c.suggested_hours) + '</td>' +
                (hidePrices ? '' : '<td class="price-col">' + fmtMoney(c.suggested_rate) + '</td>' +
                '<td class="price-col">' + fmtMoney(c.suggested_hours * c.suggested_rate) + '</td>') +
                '<td><button class="btn btn--sm btn--ghost" onclick="Workshop.deleteCatalogItem(' + c.id + ')">Desactivar</button></td>' +
                '</tr>';
        }).join('');
    }

    function addCatalogItem() {
        var name = document.getElementById('catName').value.trim();
        if (!name) return alert('Escribe un nombre');
        api('POST', '/service-catalog', {
            name: name,
            description: document.getElementById('catDesc').value,
            suggested_hours: parseFloat(document.getElementById('catHours').value) || 0,
            suggested_rate: parseFloat(document.getElementById('catRate').value) || 0
        }).then(function() {
            document.getElementById('catName').value = '';
            document.getElementById('catDesc').value = '';
            document.getElementById('catHours').value = '';
            document.getElementById('catRate').value = '';
            loadCatalog();
            setTimeout(renderCatalog, 200);
        }).catch(function(e) { alert('Error: ' + e.message); });
    }

    function deleteCatalogItem(id) {
        if (!confirm('¿Desactivar este concepto?')) return;
        api('DELETE', '/service-catalog/' + id, {})
            .then(function() {
                loadCatalog();
                setTimeout(renderCatalog, 200);
            })
            .catch(function(e) { alert('Error: ' + e.message); });
    }

    // ─── Reference data ───

    function loadReferenceData() {
        // Customers
        fetch('/pos/api/customers?per_page=500', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) { customers = (d.data || d.customers || []); })
            .catch(function() {});
        // Vehicles
        fetch('/pos/api/fleet/vehicles?per_page=500', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) { vehicles = (d.data || []); })
            .catch(function() { vehicles = []; });
        // Employees
        fetch('/pos/api/config/employees?per_page=500', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) { employees = (d.data || d.employees || []); })
            .catch(function() { employees = []; });
        // Couriers
        fetch('/pos/api/couriers?per_page=500', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) {
                couriers = (d.data || d.couriers || []);
                populateSelect('noCourier', couriers, function(c) { return {value: c.id, text: c.name}; });
            })
            .catch(function() { couriers = []; });
        // Branches
        fetch('/pos/api/config/branches', {headers: headers()})
            .then(function(r) { return r.json(); })
            .then(function(d) {
                branches = (d.data || []);
                populateBranchFilter();
            })
            .catch(function() { branches = []; });
    }

    function populateBranchFilter() {
        var sel = document.getElementById('filterBranch');
        if (!sel) return;
        var current = sel.value;
        sel.innerHTML = '<option value="">Todas las sucursales</option>';
        branches.forEach(function(b) {
            var opt = document.createElement('option');
            opt.value = b.id;
            opt.textContent = b.name;
            sel.appendChild(opt);
        });
        sel.value = current;
    }

    function populateSelect(id, items, mapper) {
        var sel = document.getElementById(id);
        if (!sel) return;
        sel.innerHTML = id === 'noCustomer' || id === 'noCourier' ? '' : '<option value="">—</option>';
        items.forEach(function(it) {
            var opt = mapper(it);
            var el = document.createElement('option');
            el.value = opt.value;
            el.textContent = opt.text;
            sel.appendChild(el);
        });
    }

    // ─── Public API ───

    return {
        init: init,
        setView: setView,
        goPage: goPage,
        openDetail: openDetail,
        closeDetailModal: closeDetailModal,
        switchTab: switchTab,
        changeStatus: changeStatus,
        reserveItem: reserveItem,
        addItemPlaceholder: addItemPlaceholder,
        addLabor: addLabor,
        convertToSale: convertToSale,
        printOrder: printOrder,
        openNewOrderModal: openNewOrderModal,
        closeNewOrderModal: closeNewOrderModal,
        submitNewOrder: submitNewOrder,
        openCatalogModal: openCatalogModal,
        closeCatalogModal: closeCatalogModal,
        addCatalogItem: addCatalogItem,
        deleteCatalogItem: deleteCatalogItem,
    };
})();

document.addEventListener('DOMContentLoaded', Workshop.init);