app/src/app.js

@@ -445,6 +445,20 @@ app.delete('/api/invoices', requireAuth, async (req, res, next) => {
 });
 
 const pdfText = (value) => String(value || 'Neuvedeno');
+const formatCzechDate = (value) => {
+    const date = new Date(`${value}T00:00:00`);
+    return Number.isNaN(date.getTime()) ? '' : date.toLocaleDateString('cs-CZ');
+};
+const toDateInputValue = (date) => date.toISOString().slice(0, 10);
+const resolveIssueDate = (issueDate) => issueDate || toDateInputValue(new Date());
+const resolveDueDate = (dueDate, issueDate) => {
+    if (dueDate) {
+        return dueDate;
+    }
+    const due = new Date(`${resolveIssueDate(issueDate)}T00:00:00`);
+    due.setDate(due.getDate() + 14);
+    return toDateInputValue(due);
+};
 const formatCzechNumber = (value) => Number(value || 0).toLocaleString('cs-CZ', {
     minimumFractionDigits: 2,
     maximumFractionDigits: 2
@@ -518,13 +532,25 @@ const renderInvoicePdf = async (document, invoice) => {
     const partyWidth = (pageWidth - 24) / 2;
     const customerX = document.page.margins.left + partyWidth + 24;
 
+    const issueDate = resolveIssueDate(data.issueDate);
+    const dueDate = resolveDueDate(data.dueDate, data.issueDate);
+
     const headerY = document.y;
     document.fillColor(navy).font(boldFont).fontSize(25).text('Faktura', document.page.margins.left, headerY);
     document.fillColor(navy).font(boldFont).fontSize(16).text(invoice.invoice_number, customerX, headerY, {
         width: partyWidth,
         align: 'right'
     });
-    document.y = headerY + 40;
+    document.fillColor(bodyText).font(regularFont).fontSize(9)
+        .text(`Datum vystavení: ${formatCzechDate(issueDate)}`, customerX, headerY + 22, {
+            width: partyWidth,
+            align: 'right'
+        })
+        .text(`Datum splatnosti: ${formatCzechDate(dueDate)}`, customerX, headerY + 35, {
+            width: partyWidth,
+            align: 'right'
+        });
+    document.y = headerY + 52;
 
     const partyTop = document.y;
     const drawParty = (x, title, profile, name) => {

app/src/static/index.html

@@ -308,13 +308,13 @@
 
                     <div class="due-date-group">
                         <div class="form-group">
-                            <label for="dueDateOption">Datum splatnosti</label>
-                            <select id="dueDateOption">
-                                <option value="14">14 dní</option>
-                                <option value="30">30 dní</option>
-                            </select>
+                            <label for="issueDate">Datum vystavení</label>
+                            <input type="date" id="issueDate" name="issueDate" placeholder="Dnešní datum" />
+                        </div>
+                        <div class="form-group">
+                            <label for="dueDate">Datum splatnosti</label>
+                            <input type="date" id="dueDate" name="dueDate" placeholder="14 dní od vystavení" />
                         </div>
-                        <output id="dueDateDisplay" class="due-date-display"></output>
                     </div>
                 </div>
 

app/src/static/script.js

@@ -40,8 +40,8 @@ const passwordForm = document.getElementById("passwordForm");
 const savePasswordButton = document.getElementById("savePasswordButton");
 const cancelPasswordButton = document.getElementById("cancelPasswordButton");
 const passwordStatus = document.getElementById("passwordStatus");
-const dueDateOption = document.getElementById("dueDateOption");
-const dueDateDisplay = document.getElementById("dueDateDisplay");
+const issueDateInput = document.getElementById("issueDate");
+const dueDateInput = document.getElementById("dueDate");
 const paymentPresetSelect = document.getElementById("paymentPresetSelect");
 const paymentPresetName = document.getElementById("paymentPresetName");
 const savePaymentPresetButton = document.getElementById("savePaymentPresetButton");
@@ -108,17 +108,17 @@ const getClientLabel = (client) => [
 
 const formatCzechDate = (dateValue) => new Date(`${dateValue}T00:00:00`).toLocaleDateString("cs-CZ");
 
-const getDueDays = () => Number.parseInt(dueDateOption.value, 10) || 14;
+const toDateInputValue = (date) => date.toISOString().slice(0, 10);
+
+const getIssueDate = () => issueDateInput.value || toDateInputValue(new Date());
 
 const getDueDate = () => {
-    const dueDate = new Date();
-    dueDate.setHours(0, 0, 0, 0);
-    dueDate.setDate(dueDate.getDate() + getDueDays());
-    return dueDate.toISOString().slice(0, 10);
-};
-
-const updateDueDate = () => {
-    dueDateDisplay.textContent = `Splatnost: ${formatCzechDate(getDueDate())}`;
+    if (dueDateInput.value) {
+        return dueDateInput.value;
+    }
+    const dueDate = new Date(`${getIssueDate()}T00:00:00`);
+    dueDate.setDate(dueDate.getDate() + 14);
+    return toDateInputValue(dueDate);
 };
 
 const updateClientTypeFields = () => {
@@ -234,6 +234,8 @@ deletePaymentPresetButton.addEventListener("click", async () => {
 });
 
 const readInvoiceData = () => ({
+    issueDate: getIssueDate(),
+    dueDate: getDueDate(),
     supplier: {
         ...readProfileFields("dodavatel"),
         typSubjektu: supplierTypeSelect.value
@@ -263,6 +265,8 @@ const clearInvoiceEditor = () => {
     currentInvoiceId = null;
     invoiceNumberDisplay.textContent = "Nová faktura";
     invoiceSaveStatus.textContent = "";
+    issueDateInput.value = "";
+    dueDateInput.value = "";
     writeProfileFields("odberatel", {});
     clientSelect.value = "";
     clientTypeSelect.value = "osoba";
@@ -282,6 +286,8 @@ const loadInvoiceIntoEditor = (invoice) => {
     currentInvoiceId = invoice.id;
     invoiceNumberDisplay.textContent = invoice.invoiceNumber;
     invoiceSaveStatus.textContent = "";
+    issueDateInput.value = invoice.data.issueDate || "";
+    dueDateInput.value = invoice.data.dueDate || "";
     writeProfileFields("dodavatel", invoice.data.supplier || {});
     supplierTypeSelect.value = invoice.data.supplier?.typSubjektu || "osoba";
     updateSupplierTypeFields();