better states

public/js/views/invoice-view.js

@@ -69,19 +69,121 @@ function getMonthName(i) {
     return ['January','February','March','April','May','June','July','August','September','October','November','December'][i];
 }
 
-function isPaid(inv) { return !!inv.paid_date; }
-function isDraft(inv) { return !inv.qbo_id; }
-function isOverdue(inv) { return !isPaid(inv) && !isPartiallyPaid(inv) && daysSince(inv.invoice_date) > OVERDUE_DAYS; }
+// ============================================================
+// Status Helpers
+// ============================================================
+
+function isPaid(inv) {
+    return !!inv.paid_date;
+}
+
+function isDraft(inv) {
+    return !inv.qbo_id;
+}
+
 function isPartiallyPaid(inv) {
     const amountPaid = parseFloat(inv.amount_paid) || 0;
     const balance = parseFloat(inv.balance) ?? ((parseFloat(inv.total) || 0) - amountPaid);
     return !inv.paid_date && amountPaid > 0 && balance > 0;
 }
-function isSent(inv) {
-    return !!inv.qbo_id && !isPaid(inv) && !isPartiallyPaid(inv) && !isOverdue(inv) && inv.email_status === 'sent';
+
+function getLastSentDate(inv) {
+    const sentDates = Array.isArray(inv.sent_dates) ? inv.sent_dates.filter(Boolean) : [];
+
+    if (sentDates.length > 0) {
+        return sentDates[sentDates.length - 1];
+    }
+
+    return null;
 }
+
+function getTermDays(inv) {
+    const terms = String(inv.terms || '').toLowerCase();
+
+    if (terms.includes('due on receipt') || terms.includes('upon receipt')) {
+        return 0;
+    }
+
+    const match = terms.match(/net\s*(\d+)/i);
+    if (match) {
+        return parseInt(match[1], 10);
+    }
+
+    // Default in deiner App ist Net 30
+    return 30;
+}
+
+function addDays(dateValue, days) {
+    const d = parseLocalDate(dateValue);
+    if (!d) return null;
+
+    d.setDate(d.getDate() + days);
+    return d;
+}
+
+function isBeforeToday(dateObj) {
+    if (!dateObj) return false;
+
+    const today = new Date();
+    today.setHours(0, 0, 0, 0);
+
+    const compare = new Date(dateObj);
+    compare.setHours(0, 0, 0, 0);
+
+    return compare < today;
+}
+
+function getEffectiveDueDate(inv) {
+    const lastSentDate = getLastSentDate(inv);
+
+    // Wichtig: Nie versendete Rechnungen können nicht overdue sein.
+    if (!lastSentDate) {
+        return null;
+    }
+
+    // Wenn due_date vorhanden ist, darf es genutzt werden,
+    // aber nur nachdem die Rechnung tatsächlich gesendet wurde.
+    if (inv.due_date) {
+        return parseLocalDate(inv.due_date);
+    }
+
+    return addDays(lastSentDate, getTermDays(inv));
+}
+
+function getOverdueDays(inv) {
+    const dueDate = getEffectiveDueDate(inv);
+    if (!dueDate) return 0;
+
+    const today = new Date();
+    today.setHours(0, 0, 0, 0);
+
+    dueDate.setHours(0, 0, 0, 0);
+
+    return Math.max(0, Math.floor((today - dueDate) / 86400000));
+}
+
+function isOverdue(inv) {
+    return !!inv.qbo_id
+        && !isPaid(inv)
+        && !isPartiallyPaid(inv)
+        && !!getLastSentDate(inv)
+        && isBeforeToday(getEffectiveDueDate(inv));
+}
+
+function isSent(inv) {
+    return !!inv.qbo_id
+        && !isPaid(inv)
+        && !isPartiallyPaid(inv)
+        && !isOverdue(inv)
+        && inv.email_status === 'sent';
+}
+
 function isOpen(inv) {
-    return !!inv.qbo_id && !isPaid(inv) && !isPartiallyPaid(inv) && !isOverdue(inv) && inv.email_status !== 'sent';
+    return !!inv.qbo_id
+        && !isPaid(inv)
+        && !isPartiallyPaid(inv)
+        && !isOverdue(inv)
+        && inv.email_status !== 'sent';
 }
 
 function saveSettings() {
@@ -235,7 +337,7 @@ function renderInvoiceRow(invoice) {
         }
         statusBadge += `<span class="inline-block px-2 py-0.5 text-xs font-semibold rounded-full bg-yellow-100 text-yellow-800" title="Paid: $${amountPaid.toFixed(2)} / Balance: $${balance.toFixed(2)}">Partial</span>`;
     } else if (overdue) {
-        statusBadge = `<span class="inline-block px-2 py-0.5 text-xs font-semibold rounded-full bg-red-100 text-red-800" title="${daysSince(invoice.invoice_date)} days">Overdue</span>`;
+        statusBadge = `<span class="inline-block px-2 py-0.5 text-xs font-semibold rounded-full bg-red-100 text-red-800" title="${getOverdueDays(invoice)} days overdue">Overdue</span>`;
     } else if (hasQbo && invoice.email_status === 'sent') {
         statusBadge = `<span class="inline-block px-2 py-0.5 text-xs font-semibold rounded-full bg-cyan-200 text-cyan-800">Sent</span>`;
     } else if (hasQbo) {