/* All intake sources prefill the same reviewed form; no automatic hardware writes. */
function newHardwareIntakeRequestId() {
    if (globalThis.crypto?.randomUUID) return globalThis.crypto.randomUUID();
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, token => {
        const value = Math.floor(Math.random() * 16);
        return (token === 'x' ? value : (value & 3) | 8).toString(16);
    });
}
const hardwareIntake = {mode: 'manual', requestId: newHardwareIntakeRequestId(), preview: null, line: null, code: null, productId: null, products: [], generation: 0};
const intakeEl = id => document.getElementById(id);
const intakeEscape = value => String(value ?? '').replaceAll('&', '&amp;').replaceAll('<', '&lt;').replaceAll('>', '&gt;').replaceAll('"', '&quot;').replaceAll("'", '&#39;');
const intakeMessage = (message, error = false) => {
    intakeEl('intake-message').textContent = message;
    intakeEl('intake-message').className = error ? 'small text-danger' : 'small text-muted';
};
async function intakeFetch(url, options = {}) {
    const response = await fetch(url, options);
    if (!response.ok) {
        let message = 'Kunne ikke hente oplysninger';
        try { const error = await response.json(); message = typeof error.detail === 'string' ? error.detail : message; } catch {}
        throw new Error(message);
    }
    return response.json();
}
function setHardwareIntakeMode(mode) {
    hardwareIntake.inventory = null;
    intakeEl('intake-inventory-panel').hidden = true;
    hardwareIntake.mode = mode;
    hardwareIntake.preview = null;
    hardwareIntake.line = null;
    hardwareIntake.code = null;
    hardwareIntake.productId = null;
    hardwareIntake.generation++;
    for (const name of ['manual', 'invoice', 'barcode']) {
        intakeEl(`intake-mode-${name}`).className = name === mode ? 'btn btn-primary' : 'btn btn-outline-primary';
    }
    intakeEl('intake-invoice-panel').hidden = mode !== 'invoice';
    intakeEl('intake-barcode-panel').hidden = mode !== 'barcode';
    intakeEl('intake-invoice-lines').innerHTML = '';
    intakeMessage(mode === 'manual' ? 'Udfyld formularen manuelt. Intet oprettes, før du gemmer.' : 'Vælg et grundlag. Kontrollér derefter hardwaretype, ejer og asset-type i formularen.');
    if (mode === 'invoice') findHardwareInvoiceSources();
    if (mode === 'barcode') intakeEl('intake-code').focus();
}
async function findHardwareInvoiceSources() {
    const version = ++hardwareIntake.generation;
    intakeMessage('Henter leverandørfakturaer…');
    try {
        const data = await intakeFetch(`/api/v1/hardware-intake/sources?q=${encodeURIComponent(intakeEl('intake-invoice-search').value)}`);
        if (version !== hardwareIntake.generation) return;
        intakeEl('intake-invoice-results').innerHTML = data.sources.length ? data.sources.map(source => `<button type="button" class="list-group-item list-group-item-action" onclick="previewHardwareInvoice('${source.kind === 'invoice' ? 'invoice' : 'file'}',${Number(source.id)})"><span class="badge bg-light text-dark me-2">${source.kind === 'invoice' ? 'Faktura' : 'Fil'}</span>${intakeEscape(source.label)}</button>`).join('') : '<div class="text-muted p-2">Ingen fakturaer fundet. Upload en faktura ovenfor.</div>';
        intakeMessage('Vælg en faktura eller upload en PDF/billedfil.');
    } catch (error) { if (version === hardwareIntake.generation) intakeMessage(error.message, true); }
}
async function previewHardwareInvoice(kind, id) {
    const version = ++hardwareIntake.generation;
    hardwareIntake.preview = null; hardwareIntake.line = null;
    intakeMessage('Læser fakturalinjer. Tekstgenkendelse kan tage lidt tid…');
    try {
        const data = await intakeFetch('/api/v1/hardware-intake/preview', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({kind,id})});
        if (version === hardwareIntake.generation) showHardwareInvoicePreview(data);
    } catch (error) { if (version === hardwareIntake.generation) intakeMessage(error.message, true); }
}
async function uploadHardwareInvoice() {
    const file = intakeEl('intake-upload').files[0];
    if (!file) return;
    const version = ++hardwareIntake.generation;
    hardwareIntake.preview = null; hardwareIntake.line = null;
    const body = new FormData(); body.append('file', file);
    intakeMessage('Uploader og læser fakturaen. Vent på linjerne, før du vælger hardware…');
    try {
        const data = await intakeFetch('/api/v1/hardware-intake/upload', {method:'POST', body});
        if (version === hardwareIntake.generation) showHardwareInvoicePreview(data);
    } catch (error) { if (version === hardwareIntake.generation) intakeMessage(error.message, true); }
}
function showHardwareInvoicePreview(data) {
    hardwareIntake.preview = data;
    const label = [data.header.vendor_name, data.header.invoice_number || data.header.filename].filter(Boolean).join(' · ');
    intakeEl('intake-invoice-lines').innerHTML = `<h3 class="h6">${intakeEscape(label || 'Fakturalinjer')}</h3><div class="table-responsive"><table class="table table-sm align-middle"><thead><tr><th>Vare</th><th>Antal</th><th>Enhedspris ekskl. moms</th><th></th></tr></thead><tbody>${data.lines.map((line,index) => `<tr><td>${intakeEscape(line.description)}<div class="small text-muted">${intakeEscape(line.sku || '')}</div></td><td>${intakeEscape(line.quantity ?? 'Ukendt')}${data.created_units?.[line.key]?.length ? `<div class="small text-muted">${data.created_units[line.key].map(id => `<a href="/hardware/${Number(id)}" target="_blank" rel="noopener">#${Number(id)}</a>`).join(', ')} allerede oprettet</div>` : ''}</td><td>${intakeEscape(line.unit_price ?? 'Ukendt')} ${intakeEscape(data.header.currency || '')}</td><td><button type="button" class="btn btn-sm btn-outline-primary" onclick="chooseHardwareInvoiceLine(${index})">Brug linje</button></td></tr>`).join('')}</tbody></table></div>`;
    intakeMessage(data.lines.length ? 'Vælg kun linjer med fysisk hardware. Kontrollér udlæste oplysninger før oprettelse.' : 'Ingen varelinjer kunne udlæses. Vælg en anden faktura eller opret manuelt.', !data.lines.length);
}
function chooseHardwareInvoiceLine(index) {
    const line = hardwareIntake.preview?.lines[index];
    const count = Number(line?.quantity);
    const remaining = count - (hardwareIntake.preview?.created_units?.[line?.key]?.length || 0);
    if (!line || !Number.isInteger(count) || count < 1) { intakeMessage('Linjen mangler et positivt helt antal. Afklar fakturagrundlaget før oprettelse.', true); return; }
    if (remaining < 1) { intakeMessage('Alle enheder på linjen er allerede oprettet. Se de tilknyttede hardwareposter.', true); return; }
    hardwareIntake.line = line;
    intakeEl('model').value = line.description;
    intakeEl('brand').value = '';
    intakeEl('intake-count').value = Math.min(remaining,100);
    intakeEl('intake-unit-cost').value = line.unit_price ?? '';
    intakeEl('intake-currency').value = hardwareIntake.preview.header.currency || 'DKK';
    updateHardwareIntakeQuantity();
    intakeMessage(`Valgt: ${line.description}. Kontrollér antal, serienumre og ejer i formularen nedenfor. Fakturaen bogføres ikke af hardwareoprettelsen.`);
    intakeEl('asset_type').focus();
}
async function lookupHardwareCode() {
    const code = intakeEl('intake-code').value.trim();
    if (!code) { intakeMessage('Scan eller indtast en kode først.', true); return; }
    const version = ++hardwareIntake.generation;
    hardwareIntake.code = null; hardwareIntake.productId = null;
    intakeMessage('Slår koden op i varekartoteket…');
    try {
        const local = await intakeFetch(`/api/v1/products?q=${encodeURIComponent(code)}`);
        let products = (Array.isArray(local) ? local : local.products || []).map(product => ({...product, intakeLocal:true}));
        if (!products.length) {
            intakeMessage('Ingen lokal vare fundet. Søger via API Gateway…');
            const external = await intakeFetch(`/api/v1/products/apigateway/search?q=${encodeURIComponent(code)}&per_page=10`);
            products = external.products || external.items || [];
        }
        if (version !== hardwareIntake.generation) return;
        hardwareIntake.products = products.slice(0,15);
        hardwareIntake.lookupCode = code;
        intakeEl('intake-product-results').innerHTML = hardwareIntake.products.length ? hardwareIntake.products.map((product,index) => `<button type="button" class="list-group-item list-group-item-action" onclick="chooseHardwareProduct(${index})"><strong>${intakeEscape(product.name || product.product_name || product.model || '(Vare uden navn)')}</strong><div class="small text-muted">${intakeEscape(product.ean || '')} · ${intakeEscape(product.sku_internal || product.sku || '')}</div></button>`).join('') : '<div class="text-muted p-2">Ingen vare fundet. Prøv et varenummer, eller vælg 100 % manuelt.</div>';
        intakeMessage('Vælg den rigtige vare. Et EAN identificerer varetypen; hver maskine får sit eget serienummer.');
    } catch (error) { if (version === hardwareIntake.generation) intakeMessage(error.message + ' Du kan stadig vælge 100 % manuelt.', true); }
}
function chooseHardwareProduct(index) {
    const product = hardwareIntake.products[index];
    if (!product) return;
    hardwareIntake.code = hardwareIntake.lookupCode;
    hardwareIntake.productId = product.intakeLocal ? product.id : null;
    intakeEl('model').value = product.name || product.product_name || product.model || '';
    const brand = product.manufacturer || product.brand || '';
    intakeEl('brand').value = typeof brand === 'string' ? brand : brand.name || '';
    intakeEl('intake-unit-cost').value = product.supplier_price ?? product.cost_price ?? product.price ?? '';
    intakeEl('intake-currency').value = product.cost_currency || product.supplier_currency || product.currency || 'DKK';
    intakeMessage(`Valgt vare: ${intakeEl('model').value}. Kontrollér oplysningerne og vælg hardwaretype og ejer før gemning.`);
    intakeEl('asset_type').focus();
}
function updateHardwareIntakeQuantity() {
    const count = Number(intakeEl('intake-count').value);
    intakeEl('serial_number').closest('.form-group').hidden = count > 1;
    intakeEl('intake-serials-group').hidden = count <= 1;
    intakeEl('intake-save').textContent = count > 1 ? `Gem ${count} hardwareenheder` : 'Gem hardware';
}
function hardwareIntakePayload(hardware) {
    if (hardwareIntake.mode === 'invoice' && !hardwareIntake.line) throw new Error('Vælg en fakturalinje først');
    if (hardwareIntake.mode === 'barcode' && !hardwareIntake.code) throw new Error('Slå en kode op, og vælg en vare først');
    const count = Number(intakeEl('intake-count').value);
    const serialText = intakeEl('intake-serials').value.trim();
    if (hardwareIntake.inventory) {
        if (count !== 1) throw new Error('En inventory-maskine kan kun oprette ét asset');
        hardware.hardware_specs = {...hardware.hardware_specs, ...hardwareIntake.inventory.hardware_specs};
    }
    return {request_id:hardwareIntake.requestId, mode:hardwareIntake.mode, hardware, count,
        serial_numbers:count > 1 && serialText ? serialText.split(/\r?\n/) : [],
        preview_id:hardwareIntake.preview?.preview_id || null, line_key:hardwareIntake.line?.key || null,
        code:hardwareIntake.code, product_id:hardwareIntake.productId,
        approved_unit_cost:intakeEl('intake-unit-cost').value || null, currency:intakeEl('intake-currency').value};
}

function openHardwareInventory() {
    setHardwareIntakeMode('manual');
    intakeEl('intake-inventory-panel').hidden = false;
    findHardwareInventory();
}
async function findHardwareInventory(page = 1) {
    const version = ++hardwareIntake.generation;
    intakeMessage('Henter PC / Mac inventory…');
    try {
        const data = await intakeFetch(`/api/v1/hardware-intake/inventory?q=${encodeURIComponent(intakeEl('intake-inventory-search').value)}&by=${encodeURIComponent(intakeEl('intake-inventory-by').value || 'name')}&page=${page}`);
        if (version !== hardwareIntake.generation) return;
        hardwareIntake.inventoryItems = data.items;
        intakeEl('intake-inventory-results').innerHTML = data.items.map((item,index) => `<button type="button" class="list-group-item list-group-item-action" onclick="chooseHardwareInventory(${index})"><strong>${intakeEscape(item.name)}</strong><div>${intakeEscape([item.brand,item.model,item.serial_number].filter(Boolean).join(' · '))}</div><div class="small text-muted">${intakeEscape([item.os,item.cpu,item.ram_gb != null ? item.ram_gb + ' GB RAM' : '',item.last_seen].filter(Boolean).join(' · '))}</div></button>`).join('') || '<div class="text-muted">Ingen maskiner fundet.</div>';
        if (page > 1) intakeEl('intake-inventory-results').innerHTML += `<button type="button" class="btn btn-secondary" onclick="findHardwareInventory(${page-1})">Forrige</button>`;
        if (data.pagination?.total_pages > page) intakeEl('intake-inventory-results').innerHTML += `<button type="button" class="btn btn-secondary" onclick="findHardwareInventory(${page+1})">Næste</button>`;
        intakeMessage(hardwareIntake.pairHardwareId ? 'Klik på en maskine for at parre den med dette asset. Eksisterende felter bevares.' : 'Vælg en maskine. Kontrollér oplysninger, hardwaretype og ejer før gemning.');
    } catch (error) { if (version === hardwareIntake.generation) intakeMessage(error.message,true); }
}
async function chooseHardwareInventory(index) {
    const item = hardwareIntake.inventoryItems[index];
    if (!item) return;
    if (hardwareIntake.pairHardwareId) {
        if (hardwareIntake.pairing) return;
        hardwareIntake.pairing = true;
        try {
            await intakeFetch(`/api/v1/hardware-intake/inventory/${hardwareIntake.pairHardwareId}/pair`, {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({inventory_id:item.id})});
            window.location.reload();
        } catch (error) { intakeMessage(error.message, true); }
        finally { hardwareIntake.pairing = false; }
        return;
    }
    hardwareIntake.inventory = item;
    for (const key of ['brand','model','serial_number']) intakeEl(key).value = item[key] || '';
    intakeEl('asset_type').value = 'pc';
    intakeEl('intake-count').value = 1;
    updateHardwareIntakeQuantity();
    intakeMessage(`Valgt: ${item.name}. CPU, RAM, OS og øvrige inventory-oplysninger gemmes med asset. Kontrollér ejer og hardwaretype før gemning.`);
}

async function unpairHardwareInventory() {
    try {
        await intakeFetch(`/api/v1/hardware-intake/inventory/${hardwareIntake.pairHardwareId}/pair`, {method:'DELETE'});
        window.location.reload();
    } catch (error) { intakeMessage(error.message, true); }
}