# All files / js/pages/purchase-orders Show.vue

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     <script setup lang="ts">
    import { useAuthAbility } from '@/composables/useAuthAbilities';
    import AppLayout from '@/layouts/AppLayout.vue';
    import { Head, Link, router, useForm } from '@inertiajs/vue3';
    import { ArrowLeft, Package, Building2, Calendar, FileText, CheckCircle, XCircle, Download, Mail, Edit, Trash2 } from 'lucide-vue-next';
    import { ref, computed } from 'vue';
    import purchaseOrders from '@/routes/purchase-orders';
    import products from '@/routes/products';
    import suppliers from '@/routes/suppliers';
    import quotes from '@/routes/quotes';
    import jobcards from '@/routes/jobcards';

    interface Product {
        id: number;
        name: string;
        sku: string | null;
        track_stock: boolean;
        track_batches: boolean;
        track_serial_numbers: boolean;
        batches?: Batch[];
        serialNumbers?: SerialNumber[];
    }

    interface Batch {
        id: number;
        batch_number: string;
        expiry_date: string | null;
    }

    interface SerialNumber {
        id: number;
        serial_number: string;
        status: string;
    }

    interface PurchaseOrderItem {
        id: number;
        product: Product;
        quantity: number;
        unit_cost: number;
        total: number;
        quantity_received: number;
        description: string | null;
        line_group_id?: number | null;
        product_batch_id: number | null;
        serial_number_ids: number[] | null;
        tax_rate?: { id: number; name: string; rate: number } | null;
    }

    interface Supplier {
        id: number;
        name: string;
    }

    interface User {
        id: number;
        name: string;
    }

    interface PurchaseOrder {
        id: number;
        po_number: string;
        supplier: Supplier;
        order_date: string;
        expected_delivery_date: string | null;
        received_date: string | null;
        status: 'draft' | 'sent' | 'received' | 'cancelled';
        subtotal: number;
        tax_amount: number;
        total: number;
        notes: string | null;
        terms: string | null;
        user: User | null;
        items: PurchaseOrderItem[];
        line_groups?: { id: number; name: string; sort_order?: number }[];
        created_at: string;
        updated_at: string;
    }

    interface PdfTemplate {
        id: number;
        name: string;
    }

    interface Props {
        purchaseOrder: PurchaseOrder;
        pdfTemplates?: PdfTemplate[];
        defaultTemplateId?: number | null;
        sourceSummary?: {
            type?: 'quote' | 'jobcard' | null;
            id?: number | null;
            number?: string | null;
        } | null;
    }

    const props = defineProps<Props>();

    const canPurchaseOrdersEdit = useAuthAbility('purchase-orders', 'edit');
    const canPurchaseOrdersDelete = useAuthAbility('purchase-orders', 'delete');

    const canEditPurchaseOrder = computed(() => {
        if (props.purchaseOrder.status === 'received') {
            return false;
        }
        return !(props.purchaseOrder.items || []).some((i) => (Number(i.quantity_received) || 0) > 0);
    });

    const canDeletePurchaseOrder = computed(() => props.purchaseOrder.status !== 'received');

    function deletePurchaseOrder() {
        if (!confirm(`Are you sure you want to delete purchase order ${props.purchaseOrder.po_number}?`)) {
            return;
        }
        router.delete(purchaseOrders.destroy(props.purchaseOrder.id).url);
    }

    const isRoundingAdjustmentLine = (item: PurchaseOrderItem) => {
        return (item.description || '').trim().toLowerCase() === 'rounding adjustment';
    };

    const visiblePurchaseOrderItems = computed(() => {
        return (props.purchaseOrder.items || []).filter((item) => !isRoundingAdjustmentLine(item));
    });

    const groupedVisiblePurchaseOrderItems = computed(() => {
        const groups = [...(props.purchaseOrder.line_groups || [])].sort((a, b) => Number(a.sort_order ?? 0) - Number(b.sort_order ?? 0));
        const fallbackGroupId = groups[0]?.id ?? 1;
        const baseItems = visiblePurchaseOrderItems.value;
        const usedIds = new Set<number>();

        const grouped = groups
            .map((group) => {
                const items = baseItems.filter((item) => (item.line_group_id ?? fallbackGroupId) === group.id);
                items.forEach((item) => usedIds.add(item.id));
                return { groupId: group.id, groupName: group.name || 'Items', items };
            })
            .filter((group) => group.items.length > 0);

        const ungroupedItems = baseItems.filter((item) => !usedIds.has(item.id));
        if (ungroupedItems.length > 0) {
            grouped.push({
                groupId: -1,
                groupName: grouped.length === 0 ? 'Items' : 'Ungrouped',
                items: ungroupedItems,
            });
        }

        if (grouped.length === 0 && baseItems.length > 0) {
            grouped.push({ groupId: -1, groupName: 'Items', items: baseItems });
        }

        return grouped;
    });
    const roundingAdjustment = computed(() => {
        return (props.purchaseOrder.items || []).reduce((sum, item) => {
            if (!isRoundingAdjustmentLine(item)) {
                return sum;
            }
            return sum + (Number(item.total) || (Number(item.quantity) || 0) * (Number(item.unit_cost) || 0));
        }, 0);
    });

    const showReceiveModal = ref(false);
    const showEmailModal = ref(false);
    const showTemplateModal = ref(false);
    const selectedTemplateId = ref<number | null>(props.defaultTemplateId ?? null);
    const emailResult = ref({
        success: false,
        email: '',
        message: ''
    });

    const receiveForm = useForm({
        items: props.purchaseOrder.items.map(item => ({
            id: item.id,
            quantity_received: 0, // Start with 0 for new receiving
            product_batch_id: null, // Don't pre-select batch
            serial_number_ids: [], // Don't pre-select serial numbers
            custom_serial_numbers: [] as string[],
        })),
    });

    const statusForm = useForm({
        status: props.purchaseOrder.status,
    });

    const emailForm = useForm({
        email: props.purchaseOrder.supplier.email || '',
        customMessage: '',
        template_id: null as number | null,
    });

    function updateStatus(newStatus: string) {
        if (confirm(`Are you sure you want to change the status to "${newStatus}"?`)) {
            statusForm.status = newStatus;
            statusForm.put(purchaseOrders.updateStatus(props.purchaseOrder.id).url);
        }
    }

    function openReceiveModal() {
        receiveForm.items = props.purchaseOrder.items.map(item => ({
            id: item.id,
            quantity_received: 0, // Always start with 0 for new receiving
            product_batch_id: null, // Don't pre-select batch
            serial_number_ids: [], // Don't pre-select serial numbers
            custom_serial_numbers: [] as string[],
        }));
        showReceiveModal.value = true;
    }

    function addCustomSerial(index: number) {
        const item = receiveForm.items[index];
        if (!item.custom_serial_numbers) {
            item.custom_serial_numbers = [];
        }
        item.custom_serial_numbers.push('');
    }

    function removeCustomSerial(itemIndex: number, serialIndex: number) {
        receiveForm.items[itemIndex].custom_serial_numbers.splice(serialIndex, 1);
    }

    function getProductSerialNumbers(itemId: number): SerialNumber[] {
        const purchaseOrderItem = props.purchaseOrder.items.find(i => i.id === itemId);
        if (!purchaseOrderItem || !purchaseOrderItem.product) {
            return [];
        }
        const product = purchaseOrderItem.product;

        // Try different possible property names (camelCase and snake_case)
        const serials = product.serialNumbers || (product as any).serial_numbers || [];

        if (!Array.isArray(serials)) {
            return [];
        }

        // Filter out serial numbers that were already received in previous receiving sessions
        const alreadyReceivedSerialIds = purchaseOrderItem.serial_number_ids || [];

        // Only return serial numbers that are available and haven't been received yet
        return serials.filter(serial =>
            serial.status === 'available' || serial.status === 'in_stock'
        ).filter(serial =>
            !alreadyReceivedSerialIds.includes(serial.id)
        );
    }

    function submitReceiveItems() {
        receiveForm.post(purchaseOrders.receiveItems(props.purchaseOrder.id).url, {
            onSuccess: () => {
                showReceiveModal.value = false;
            },
        });
    }

    function getStatusColor(status: string) {
        return {
            'draft': 'bg-gray-100 text-gray-800',
            'sent': 'bg-blue-100 text-blue-800',
            'received': 'bg-green-100 text-green-800',
            'cancelled': 'bg-red-100 text-red-800',
        }[status] || 'bg-gray-100 text-gray-800';
    }

    const isFullyReceived = computed(() => {
        return props.purchaseOrder.items.every(item => item.quantity_received >= item.quantity);
    });

    const canReceive = computed(() => {
        return props.purchaseOrder.status !== 'cancelled' && props.purchaseOrder.status !== 'received';
    });

    const downloadPDF = () => {
        const url = new URL(purchaseOrders.downloadPdf(props.purchaseOrder.id).url, window.location.origin);
        if (selectedTemplateId.value) {
            url.searchParams.set('template_id', selectedTemplateId.value.toString());
        }
        window.open(url.toString(), '_blank');
        showTemplateModal.value = false;
        selectedTemplateId.value = null;
    };

    const sendEmail = () => {
        emailForm.post(purchaseOrders.email(props.purchaseOrder.id).url, {
            onSuccess: (page) => {
                showEmailModal.value = false;
                emailResult.value = {
                    success: true,
                    email: emailForm.email,
                    message: page.props.flash?.success || 'Email sent successfully'
                };
                emailForm.reset();
            },
            onError: (errors) => {
                emailResult.value = {
                    success: false,
                    email: emailForm.email,
                    message: errors.message || 'Failed to send email'
                };
            }
        });
    };
    </script>

    <template>
        <Head :title="`Purchase Order ${props.purchaseOrder.po_number}`" />
        <AppLayout :breadcrumbs="[
            { title: 'Purchase Orders', href: purchaseOrders.index().url },
            { title: props.purchaseOrder.po_number, href: '#' }
        ]">
            <div class="p-6">
                <div class="mb-6">
                    <Link
                        :href="purchaseOrders.index().url"
                        class="mb-4 inline-flex items-center gap-2 text-sm text-gray-600 hover:text-gray-900"
                    >
                        <ArrowLeft class="h-4 w-4" />
                        Back to Purchase Orders
                    </Link>

                    <div class="flex items-center justify-between">
                        <div>
                            <h1 class="text-2xl font-bold text-gray-900">{{ props.purchaseOrder.po_number }}</h1>
                            <p class="text-gray-600">Purchase Order Details</p>
                        </div>
                        <div class="flex items-center gap-2">
                            <span :class="getStatusColor(props.purchaseOrder.status)" class="inline-flex rounded-full px-3 py-1 text-sm font-semibold capitalize">
                                {{ props.purchaseOrder.status }}
                            </span>
                            <Link
                                v-if="canPurchaseOrdersEdit && canEditPurchaseOrder"
                                :href="purchaseOrders.edit(props.purchaseOrder.id).url"
                                class="flex items-center gap-2 rounded-md border border-gray-300 bg-white px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50"
                            >
                                <Edit class="h-4 w-4" />
                                Edit
                            </Link>
                            <button
                                v-if="canPurchaseOrdersDelete && canDeletePurchaseOrder"
                                type="button"
                                class="flex items-center gap-2 rounded-md border border-red-200 bg-white px-4 py-2 text-sm font-medium text-red-700 hover:bg-red-50"
                                @click="deletePurchaseOrder"
                            >
                                <Trash2 class="h-4 w-4" />
                                Delete
                            </button>
                            <button
                                v-if="!props.pdfTemplates || props.pdfTemplates.length === 0"
                                @click="downloadPDF"
                                class="flex items-center gap-2 rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700"
                            >
                                <Download class="h-4 w-4" />
                                Download PDF
                            </button>
                            <button
                                v-else
                                @click="showTemplateModal = true"
                                class="flex items-center gap-2 rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700"
                            >
                                <Download class="h-4 w-4" />
                                Download PDF
                            </button>
                            <button
                                @click="showEmailModal = true"
                                class="flex items-center gap-2 rounded-md bg-indigo-600 px-4 py-2 text-sm font-medium text-white hover:bg-indigo-700"
                            >
                                <Mail class="h-4 w-4" />
                                Email
                            </button>
                            <button
                                v-if="canReceive"
                                @click="openReceiveModal"
                                class="rounded-md bg-green-600 px-4 py-2 text-sm font-medium text-white hover:bg-green-700"
                            >
                                Receive Items
                            </button>
                        </div>
                    </div>
                </div>

                <div class="grid gap-6 md:grid-cols-3">
                    <!-- Main Content -->
                    <div class="md:col-span-2 space-y-6">
                        <div v-if="props.sourceSummary?.type && props.sourceSummary?.id" class="rounded-lg border border-gray-200 bg-white p-6">
                            <h2 class="mb-4 text-lg font-semibold text-gray-900">Related Source</h2>
                            <div class="text-sm text-gray-700">
                                <span class="mr-2 font-medium capitalize">{{ props.sourceSummary.type }}</span>
                                <Link
                                    v-if="props.sourceSummary.type === 'quote'"
                                    :href="quotes.show(props.sourceSummary.id).url"
                                    class="text-blue-600 hover:text-blue-800 hover:underline"
                                >
                                    {{ props.sourceSummary.number || `Quote #${props.sourceSummary.id}` }}
                                </Link>
                                <Link
                                    v-else-if="props.sourceSummary.type === 'jobcard'"
                                    :href="jobcards.show(props.sourceSummary.id).url"
                                    class="text-blue-600 hover:text-blue-800 hover:underline"
                                >
                                    {{ props.sourceSummary.number || `Jobcard #${props.sourceSummary.id}` }}
                                </Link>
                            </div>
                        </div>
                        <!-- Supplier Information -->
                        <div class="rounded-lg border border-gray-200 bg-white p-6">
                            <h2 class="mb-4 text-lg font-semibold text-gray-900">Supplier Information</h2>
                            <div class="flex items-center gap-3">
                                <Building2 class="h-5 w-5 text-gray-400" />
                                <div>
                                    <div class="font-medium text-gray-900">
                                        <Link
                                            v-if="props.purchaseOrder.supplier && props.purchaseOrder.supplier.id"
                                            :href="suppliers.show(props.purchaseOrder.supplier.id).url"
                                            class="text-blue-600 hover:text-blue-800 hover:underline"
                                        >
                                            {{ props.purchaseOrder.supplier.name }}
                                        </Link>
                                        <span v-else>{{ props.purchaseOrder.supplier?.name || '-' }}</span>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- Items -->
                        <div class="rounded-lg border border-gray-200 bg-white p-6">
                            <h2 class="mb-4 text-lg font-semibold text-gray-900">Items</h2>
                            <div class="overflow-x-auto">
                                <table class="min-w-full divide-y divide-gray-200">
                                    <thead class="bg-gray-50">
                                        <tr>
                                            <th class="px-4 py-3 text-left text-xs font-medium uppercase tracking-wider text-gray-500">Product</th>
                                            <th class="px-4 py-3 text-right text-xs font-medium uppercase tracking-wider text-gray-500">Quantity</th>
                                            <th class="px-4 py-3 text-right text-xs font-medium uppercase tracking-wider text-gray-500">Unit Cost</th>
                                            <th class="px-4 py-3 text-left text-xs font-medium uppercase tracking-wider text-gray-500">Tax</th>
                                            <th class="px-4 py-3 text-right text-xs font-medium uppercase tracking-wider text-gray-500">Received</th>
                                            <th class="px-4 py-3 text-right text-xs font-medium uppercase tracking-wider text-gray-500">Total</th>
                                        </tr>
                                    </thead>
                                    <tbody class="divide-y divide-gray-200 bg-white">
                                        <template v-for="group in groupedVisiblePurchaseOrderItems" :key="`group-${group.groupId}`">
                                            <tr class="bg-gray-100">
                                                <td colspan="6" class="px-4 py-2 text-xs font-semibold uppercase tracking-wide text-gray-700">
                                                    {{ group.groupName }}
                                                </td>
                                            </tr>
                                            <tr v-for="item in group.items" :key="item.id">
                                            <td class="whitespace-nowrap px-4 py-4">
                                                <div class="flex items-center gap-2">
                                                    <Package class="h-4 w-4 text-gray-400" />
                                                    <div>
                                                        <div class="font-medium text-gray-900">
                                                            <Link
                                                                v-if="item.product && item.product.id"
                                                                :href="products.show(item.product.id).url"
                                                                class="text-blue-600 hover:text-blue-800 hover:underline"
                                                            >
                                                                {{ item.description || item.product.name }}{{ (item.product?.sku || item.product?.barcode) ? ` (${item.product.sku || item.product.barcode})` : '' }}
                                                            </Link>
                                                            <span v-else>{{ item.description || item.product?.name }}{{ (item.product?.sku || item.product?.barcode) ? ` (${item.product.sku || item.product.barcode})` : '' }}</span>
                                                        </div>
                                                    </div>
                                                </div>
                                            </td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm text-gray-900">
                                                {{ item.quantity }}
                                            </td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm text-gray-900">
                                                R{{ Number(item.unit_cost).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                            <td class="whitespace-nowrap px-4 py-4 text-sm text-gray-900">
                                                <span v-if="item.tax_rate" class="inline-flex items-center rounded bg-gray-100 px-1.5 py-0.5 text-xs font-medium text-gray-700">
                                                    {{ item.tax_rate.name }} ({{ item.tax_rate.rate }}%)
                                                </span>
                                                <span v-else class="text-gray-400">—</span>
                                            </td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm">
                                                <span :class="item.quantity_received >= item.quantity ? 'text-green-600' : 'text-yellow-600'" class="font-medium">
                                                    {{ item.quantity_received }} / {{ item.quantity }}
                                                </span>
                                            </td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm font-medium text-gray-900">
                                                R{{ Number(item.total).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                            </tr>
                                        </template>
                                    </tbody>
                                    <tfoot class="bg-gray-50">
                                        <tr>
                                            <td colspan="5" class="px-4 py-4 text-right text-sm font-medium text-gray-900">Subtotal</td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm font-medium text-gray-900">
                                                R{{ Number(props.purchaseOrder.subtotal).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                        </tr>
                                        <tr v-if="props.purchaseOrder.tax_amount > 0">
                                            <td colspan="5" class="px-4 py-4 text-right text-sm font-medium text-gray-900">Tax</td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm font-medium text-gray-900">
                                                R{{ Number(props.purchaseOrder.tax_amount).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                        </tr>
                                        <tr v-if="Math.abs(roundingAdjustment) > 0.0001">
                                            <td colspan="5" class="px-4 py-4 text-right text-sm font-medium text-gray-900">Rounding Adjustment</td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-sm font-medium text-gray-900">
                                                R{{ Number(roundingAdjustment).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                        </tr>
                                        <tr>
                                            <td colspan="5" class="px-4 py-4 text-right text-lg font-bold text-gray-900">Total</td>
                                            <td class="whitespace-nowrap px-4 py-4 text-right text-lg font-bold text-gray-900">
                                                R{{ Number(props.purchaseOrder.total).toLocaleString('en-ZA', { minimumFractionDigits: 2 }) }}
                                            </td>
                                        </tr>
                                    </tfoot>
                                </table>
                            </div>
                        </div>

                        <!-- Notes and Terms -->
                        <div v-if="props.purchaseOrder.notes || props.purchaseOrder.terms" class="grid gap-6 md:grid-cols-2">
                            <div v-if="props.purchaseOrder.notes" class="rounded-lg border border-gray-200 bg-white p-6">
                                <h3 class="mb-2 text-sm font-semibold text-gray-900">Notes</h3>
                                <p class="text-sm text-gray-700 whitespace-pre-wrap">{{ props.purchaseOrder.notes }}</p>
                            </div>
                            <div v-if="props.purchaseOrder.terms" class="rounded-lg border border-gray-200 bg-white p-6">
                                <h3 class="mb-2 text-sm font-semibold text-gray-900">Terms</h3>
                                <p class="text-sm text-gray-700 whitespace-pre-wrap">{{ props.purchaseOrder.terms }}</p>
                            </div>
                        </div>
                    </div>

                    <!-- Sidebar -->
                    <div class="space-y-6">
                        <!-- Status Management -->
                        <div class="rounded-lg border border-gray-200 bg-white p-6">
                            <h3 class="mb-4 text-sm font-semibold text-gray-900">Status Management</h3>
                            <div class="space-y-2">
                                <button
                                    v-for="status in ['draft', 'sent', 'received', 'cancelled']"
                                    :key="status"
                                    @click="updateStatus(status)"
                                    :class="[
                                        'w-full rounded-md px-3 py-2 text-left text-sm font-medium transition-colors',
                                        props.purchaseOrder.status === status
                                            ? 'bg-blue-100 text-blue-800 border border-blue-200'
                                            : 'bg-gray-50 text-gray-700 hover:bg-gray-100 border border-gray-200'
                                    ]"
                                >
                                    {{ status.charAt(0).toUpperCase() + status.slice(1) }}
                                </button>
                            </div>
                        </div>

                        <!-- Order Details -->
                        <div class="rounded-lg border border-gray-200 bg-white p-6">
                            <h3 class="mb-4 text-sm font-semibold text-gray-900">Order Details</h3>
                            <div class="space-y-3 text-sm">
                                <div>
                                    <div class="text-gray-500">Order Date</div>
                                    <div class="font-medium text-gray-900">{{ new Date(props.purchaseOrder.order_date).toLocaleDateString() }}</div>
                                </div>
                                <div v-if="props.purchaseOrder.expected_delivery_date">
                                    <div class="text-gray-500">Expected Delivery</div>
                                    <div class="font-medium text-gray-900">{{ new Date(props.purchaseOrder.expected_delivery_date).toLocaleDateString() }}</div>
                                </div>
                                <div v-if="props.purchaseOrder.received_date">
                                    <div class="text-gray-500">Received Date</div>
                                    <div class="font-medium text-gray-900">{{ new Date(props.purchaseOrder.received_date).toLocaleDateString() }}</div>
                                </div>
                                <div v-if="props.purchaseOrder.user">
                                    <div class="text-gray-500">Created By</div>
                                    <div class="font-medium text-gray-900">{{ props.purchaseOrder.user.name }}</div>
                                </div>
                                <div>
                                    <div class="text-gray-500">Created</div>
                                    <div class="font-medium text-gray-900">{{ new Date(props.purchaseOrder.created_at).toLocaleDateString() }}</div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Receive Items Modal -->
            <div
                v-if="showReceiveModal"
                class="fixed inset-0 z-50 flex items-center justify-center bg-black bg-opacity-50"
                @click.self="showReceiveModal = false"
            >
                <div class="w-full max-w-2xl rounded-lg bg-white p-6 shadow-xl">
                    <h2 class="mb-4 text-xl font-bold text-gray-900">Receive Items</h2>
                    <form @submit.prevent="submitReceiveItems" class="space-y-4">
                        <div class="max-h-96 space-y-3 overflow-y-auto">
                            <div
                                v-for="(item, index) in receiveForm.items"
                                :key="item.id"
                                class="rounded-lg border border-gray-200 p-4"
                            >
                                <div class="mb-2 font-medium text-gray-900">
                                    {{ props.purchaseOrder.items.find(i => i.id === item.id)?.product.name }}
                                </div>
                                <div class="mb-2 text-sm text-gray-500">
                                    Ordered: {{ props.purchaseOrder.items.find(i => i.id === item.id)?.quantity }} |
                                    Already Received: {{ props.purchaseOrder.items.find(i => i.id === item.id)?.quantity_received }}
                                </div>

                                <div class="space-y-3">
                                    <div>
                                        <label class="block text-sm font-medium text-gray-700">
                                            Quantity Received
                                        </label>
                                        <input
                                            v-model.number="receiveForm.items[index].quantity_received"
                                            type="number"
                                            min="0"
                                            :max="(props.purchaseOrder.items.find(i => i.id === item.id)?.quantity || 0) - (props.purchaseOrder.items.find(i => i.id === item.id)?.quantity_received || 0)"
                                            class="w-full rounded border px-3 py-2 focus:border-blue-500 focus:ring-2 focus:ring-blue-500"
                                        />
                                    </div>

                                    <!-- Batch Selection -->
                                    <div v-if="props.purchaseOrder.items.find(i => i.id === item.id)?.product.track_batches">
                                        <label class="block text-sm font-medium text-gray-700">
                                            Batch (Optional)
                                        </label>
                                        <select
                                            v-model.number="receiveForm.items[index].product_batch_id"
                                            class="w-full rounded border px-3 py-2 focus:border-blue-500 focus:ring-2 focus:ring-blue-500"
                                        >
                                            <option :value="null">No Batch</option>
                                            <option
                                                v-for="batch in props.purchaseOrder.items.find(i => i.id === item.id)?.product.batches || []"
                                                :key="batch.id"
                                                :value="batch.id"
                                            >
                                                {{ batch.batch_number }}
                                                <span v-if="batch.expiry_date">
                                                    (Exp: {{ new Date(batch.expiry_date).toLocaleDateString() }})
                                                </span>
                                            </option>
                                        </select>
                                    </div>

                                    <!-- Serial Number Selection -->
                                    <div v-if="props.purchaseOrder.items.find(i => i.id === item.id)?.product.track_serial_numbers">
                                        <label class="block text-sm font-medium text-gray-700 mb-2">
                                            Serial Numbers
                                            <span class="text-xs text-gray-500">
                                                (Select or enter {{ receiveForm.items[index].quantity_received || 0 }} serial number(s))
                                            </span>
                                        </label>

                                        <!-- Existing Serial Numbers -->
                                        <div v-if="getProductSerialNumbers(item.id) && getProductSerialNumbers(item.id).length > 0" class="mb-3 max-h-40 space-y-2 overflow-y-auto rounded border border-gray-300 p-2">
                                            <label
                                                v-for="serial in getProductSerialNumbers(item.id)"
                                                :key="serial.id"
                                                class="flex items-center gap-2 rounded px-2 py-1 hover:bg-gray-50"
                                            >
                                                <input
                                                    type="checkbox"
                                                    :value="serial.id"
                                                    v-model="receiveForm.items[index].serial_number_ids"
                                                    class="rounded border-gray-300 text-blue-600 focus:ring-blue-500"
                                                    :disabled="(receiveForm.items[index].serial_number_ids.length + (receiveForm.items[index].custom_serial_numbers?.filter(s => s.trim()).length || 0)) >= (receiveForm.items[index].quantity_received || 0) && !receiveForm.items[index].serial_number_ids.includes(serial.id)"
                                                />
                                                <span class="text-sm text-gray-900">{{ serial.serial_number }}</span>
                                            </label>
                                        </div>
                                        <div v-else class="mb-3 text-sm text-gray-500 italic">
                                            No existing serial numbers found for this product.
                                        </div>

                                        <!-- Custom Serial Number Entry -->
                                        <div class="mb-3">
                                            <div class="flex items-center justify-between mb-2">
                                                <label class="block text-sm font-medium text-gray-700">
                                                    Enter Custom Serial Numbers
                                                </label>
                                                <button
                                                    type="button"
                                                    @click="addCustomSerial(index)"
                                                    class="text-sm text-blue-600 hover:text-blue-800"
                                                >
                                                    + Add Serial
                                                </button>
                                            </div>
                                            <div v-if="receiveForm.items[index].custom_serial_numbers && receiveForm.items[index].custom_serial_numbers.length > 0" class="space-y-2">
                                                <div
                                                    v-for="(customSerial, serialIndex) in receiveForm.items[index].custom_serial_numbers"
                                                    :key="serialIndex"
                                                    class="flex items-center gap-2"
                                                >
                                                    <input
                                                        v-model="receiveForm.items[index].custom_serial_numbers[serialIndex]"
                                                        type="text"
                                                        placeholder="Enter serial number"
                                                        class="flex-1 rounded border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-2 focus:ring-blue-500"
                                                        :disabled="(receiveForm.items[index].serial_number_ids.length + (receiveForm.items[index].custom_serial_numbers?.filter((s, idx) => idx !== serialIndex && s.trim()).length || 0)) >= (receiveForm.items[index].quantity_received || 0)"
                                                    />
                                                    <button
                                                        type="button"
                                                        @click="removeCustomSerial(index, serialIndex)"
                                                        class="text-red-600 hover:text-red-800"
                                                    >
                                                        ×
                                                    </button>
                                                </div>
                                            </div>
                                        </div>

                                        <p class="mt-1 text-xs text-gray-500">
                                            Total: {{ (receiveForm.items[index].serial_number_ids.length + (receiveForm.items[index].custom_serial_numbers?.filter(s => s.trim()).length || 0)) }} / {{ receiveForm.items[index].quantity_received || 0 }}
                                        </p>
                                    </div>
                                </div>
                            </div>
                        </div>
                        <div class="flex items-center justify-end gap-3 border-t pt-4">
                            <button
                                type="button"
                                @click="showReceiveModal = false"
                                class="rounded-md border border-gray-300 bg-white px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50"
                            >
                                Cancel
                            </button>
                            <button
                                type="submit"
                                :disabled="receiveForm.processing"
                                class="rounded-md bg-green-600 px-4 py-2 text-sm font-medium text-white hover:bg-green-700 disabled:opacity-50"
                            >
                                {{ receiveForm.processing ? 'Receiving...' : 'Receive Items' }}
                            </button>
                        </div>
                    </form>
                </div>
            </div>

            <!-- Email Modal -->
            <div v-if="showEmailModal" class="fixed inset-0 z-50 overflow-y-auto bg-gray-600 bg-opacity-50">
                <div class="flex min-h-screen items-center justify-center p-4">
                    <div class="w-full max-w-md rounded-lg bg-white shadow-xl">
                        <div class="border-b border-gray-200 px-6 py-4">
                            <h3 class="text-lg font-semibold text-gray-900">Email Purchase Order</h3>
                        </div>
                        <form @submit.prevent="sendEmail" class="px-6 py-4">
                            <div class="mb-4">
                                <label class="mb-2 block text-sm font-medium text-gray-700">Email Address</label>
                                <input
                                    v-model="emailForm.email"
                                    type="email"
                                    required
                                    class="w-full rounded-md border border-gray-300 px-3 py-2 focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-500"
                                    placeholder="supplier@example.com"
                                />
                                <div v-if="emailForm.errors.email" class="mt-1 text-sm text-red-600">{{ emailForm.errors.email }}</div>
                            </div>
                            <div class="mb-4">
                                <label class="mb-2 block text-sm font-medium text-gray-700">Custom Message (Optional)</label>
                                <textarea
                                    v-model="emailForm.customMessage"
                                    rows="4"
                                    class="w-full rounded-md border border-gray-300 px-3 py-2 focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-500"
                                    placeholder="Add a custom message to include in the email..."
                                ></textarea>
                            </div>
                            <div v-if="props.pdfTemplates && props.pdfTemplates.length > 0" class="mb-4">
                                <label class="mb-2 block text-sm font-medium text-gray-700">PDF Template</label>
                                <select
                                    v-model="emailForm.template_id"
                                    class="w-full rounded-md border border-gray-300 px-3 py-2 focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-500"
                                >
                                    <option :value="null">Default Template</option>
                                    <option v-for="template in props.pdfTemplates" :key="template.id" :value="template.id">
                                        {{ template.name }}
                                    </option>
                                </select>
                            </div>
                            <div class="flex justify-end gap-3 border-t border-gray-200 px-6 py-4">
                                <button
                                    type="button"
                                    @click="showEmailModal = false; emailForm.reset();"
                                    class="rounded-md border border-gray-300 bg-white px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50"
                                >
                                    Cancel
                                </button>
                                <button
                                    type="submit"
                                    :disabled="emailForm.processing"
                                    class="rounded-md bg-indigo-600 px-4 py-2 text-sm font-medium text-white hover:bg-indigo-700 disabled:opacity-50"
                                >
                                    {{ emailForm.processing ? 'Sending...' : 'Send Email' }}
                                </button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>

            <!-- Template Selection Modal -->
            <div v-if="showTemplateModal" class="fixed inset-0 z-50 overflow-y-auto bg-gray-600 bg-opacity-50">
                <div class="flex min-h-screen items-center justify-center p-4">
                    <div class="w-full max-w-md rounded-lg bg-white shadow-xl">
                        <div class="border-b border-gray-200 px-6 py-4">
                            <h3 class="text-lg font-semibold text-gray-900">Select PDF Template</h3>
                        </div>
                        <div class="px-6 py-4">
                            <div v-if="props.pdfTemplates && props.pdfTemplates.length > 0" class="mb-4">
                                <label class="mb-2 block text-sm font-medium text-gray-700">Choose Template</label>
                                <select
                                    v-model="selectedTemplateId"
                                    class="w-full rounded-md border border-gray-300 px-3 py-2 focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-500"
                                >
                                    <option :value="null">Default Template</option>
                                    <option v-for="template in props.pdfTemplates" :key="template.id" :value="template.id">
                                        {{ template.name }}
                                    </option>
                                </select>
                            </div>
                            <div v-else class="mb-4 text-sm text-gray-500">
                                No custom templates available. The default template will be used.
                            </div>
                            <div class="flex justify-end gap-3 border-t border-gray-200 px-6 py-4">
                                <button
                                    type="button"
                                    @click="showTemplateModal = false; selectedTemplateId = null;"
                                    class="rounded-md border border-gray-300 bg-white px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50"
                                >
                                    Cancel
                                </button>
                                <button
                                    type="button"
                                    @click="downloadPDF"
                                    class="rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700"
                                >
                                    Download PDF
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </AppLayout>
    </template>