Initial commit: Kalender, Buchungen mit Slot-Reservierung, Resend-E-Mails, Admin-UI, Startscript

docs/backlog.md

@@ -0,0 +1,40 @@
+## Backlog – Terminplanung & Infrastruktur
+
+### Kalender & Workflow
+- ICS-Anhang/Link in E‑Mails (Kalendereintrag)
+- Erinnerungsmails (24h/3h vor Termin)
+- Umbuchen/Stornieren per sicherem Kundenlink (Token)
+- Pufferzeiten und Sperrtage/Feiertage konfigurierbar
+- Slots dynamisch an Behandlungsdauer anpassen; Überschneidungen verhindern
+
+### Sicherheit & Qualität
+- Rate‑Limiting (IP/E‑Mail) für Formularspam
+- CAPTCHA im Buchungsformular
+- E‑Mail‑Verifizierung (Double‑Opt‑In) optional
+- Audit‑Log (wer/was/wann)
+- DSGVO: Einwilligungstexte, Löschkonzept
+
+### E‑Mail & Infrastruktur
+- Retry/Backoff + Fallback‑Queue bei Resend‑Fehlern
+- Health‑Check für Resend‑Erreichbarkeit
+- Transaktionale Template‑IDs (anbieteraustauschbar)
+- Admin‑Digest (tägliche Übersicht)
+
+### UX/UI
+- Mobiler Kalender mit klarer Slot‑Visualisierung
+- Kunden‑Statusseite (pending/confirmed)
+- Prominente Fehlerzustände inkl. Hinweise bei Doppelbuchung
+
+### Internationalisierung & Zeitzonen
+- Zeitzonenfest (UTC intern, lokale Anzeige, Sommerzeittests)
+- String‑Bündelung für spätere Lokalisierung
+
+### Admin & Export
+- CSV‑Export von Buchungen
+- Filter (Status/Behandlung/Zeitraum), Schnellaktionen (Batch‑Bestätigen)
+
+### DevOps & Setup
+- .env.local‑Unterstützung und Validierung (zod‑based)
+- PowerShell‑Verbesserungen: pnpm‑Check, optionales Schreiben in .env.local, sichere Eingabe
+
+

scripts/start-with-email.ps1

@@ -0,0 +1,22 @@
+$ErrorActionPreference = "Stop"
+
+param(
+  [Parameter(Mandatory = $true)]
+  [string]$ResendApiKey,
+
+  [Parameter(Mandatory = $false)]
+  [string]$EmailFrom = "Stargirlnails <no-reply@stargirlnails.de>",
+
+  [Parameter(Mandatory = $false)]
+  [string]$AdminEmail
+)
+
+Write-Host "Setting environment variables for Resend..."
+$env:RESEND_API_KEY = $ResendApiKey
+$env:EMAIL_FROM = $EmailFrom
+if ($AdminEmail) { $env:ADMIN_EMAIL = $AdminEmail }
+
+Write-Host "Starting app with pnpm dev..."
+pnpm dev
+
+

src/client/app.tsx

@@ -6,10 +6,11 @@ import { BookingForm } from "@/client/components/booking-form";
 import { AdminTreatments } from "@/client/components/admin-treatments";
 import { AdminBookings } from "@/client/components/admin-bookings";
 import { InitialDataLoader } from "@/client/components/initial-data-loader";
+import { AdminAvailability } from "@/client/components/admin-availability";
 
 function App() {
   const { user, isLoading, isOwner } = useAuth();
-  const [activeTab, setActiveTab] = useState<"booking" | "admin-treatments" | "admin-bookings" | "profile">("booking");
+  const [activeTab, setActiveTab] = useState<"booking" | "admin-treatments" | "admin-bookings" | "admin-availability" | "profile">("booking");
 
   // Show loading spinner while checking authentication
   if (isLoading) {
@@ -24,7 +25,7 @@ function App() {
   }
 
   // Show login form if user is not authenticated and trying to access admin features
-  const needsAuth = !user && (activeTab === "admin-treatments" || activeTab === "admin-bookings" || activeTab === "profile");
+  const needsAuth = !user && (activeTab === "admin-treatments" || activeTab === "admin-bookings" || activeTab === "admin-availability" || activeTab === "profile");
   if (needsAuth) {
     return <LoginForm />;
   }
@@ -33,6 +34,7 @@ function App() {
     { id: "booking", label: "Termin buchen", icon: "📅", requiresAuth: false },
     { id: "admin-treatments", label: "Behandlungen verwalten", icon: "💅", requiresAuth: true },
     { id: "admin-bookings", label: "Buchungen verwalten", icon: "📋", requiresAuth: true },
+    { id: "admin-availability", label: "Verfügbarkeiten", icon: "⏰", requiresAuth: true },
     ...(user ? [{ id: "profile", label: "Profil", icon: "👤", requiresAuth: true }] : []),
   ] as const;
 
@@ -159,6 +161,20 @@ function App() {
           </div>
         )}
 
+        {activeTab === "admin-availability" && isOwner && (
+          <div>
+            <div className="text-center mb-8">
+              <h2 className="text-3xl font-bold text-gray-900 mb-4">
+                Verfügbarkeiten verwalten
+              </h2>
+              <p className="text-lg text-gray-600">
+                Lege freie Slots an und entferne sie bei Bedarf.
+              </p>
+            </div>
+            <AdminAvailability />
+          </div>
+        )}
+
         {activeTab === "profile" && user && (
           <div>
             <div className="text-center mb-8">

src/client/components/admin-availability.tsx

@@ -0,0 +1,94 @@
+import { useState } from "react";
+import { useMutation, useQuery } from "@tanstack/react-query";
+import { queryClient } from "@/client/rpc-client";
+
+export function AdminAvailability() {
+  const today = new Date().toISOString().split("T")[0];
+  const [selectedDate, setSelectedDate] = useState<string>(today);
+  const [time, setTime] = useState<string>("09:00");
+  const [duration, setDuration] = useState<number>(30);
+
+  const { data: slots } = useQuery(
+    queryClient.availability.live.byDate.experimental_liveOptions(selectedDate)
+  );
+
+  const { mutate: createSlot, isPending: isCreating } = useMutation(
+    queryClient.availability.create.mutationOptions()
+  );
+  const { mutate: removeSlot } = useMutation(
+    queryClient.availability.remove.mutationOptions()
+  );
+
+  const addSlot = () => {
+    if (!selectedDate || !time || !duration) return;
+    createSlot({ sessionId: localStorage.getItem("sessionId") || "", date: selectedDate, time, durationMinutes: duration });
+  };
+
+  return (
+    <div className="max-w-3xl mx-auto space-y-6">
+      <h2 className="text-xl font-semibold">Verfügbarkeiten verwalten</h2>
+
+      <div className="flex items-center gap-3">
+        <input
+          type="date"
+          value={selectedDate}
+          onChange={(e) => setSelectedDate(e.target.value)}
+          className="border rounded px-3 py-2"
+        />
+        <input
+          type="time"
+          value={time}
+          onChange={(e) => setTime(e.target.value)}
+          className="border rounded px-3 py-2"
+        />
+        <input
+          type="number"
+          min={5}
+          step={5}
+          value={duration}
+          onChange={(e) => setDuration(Number(e.target.value))}
+          className="border rounded px-3 py-2 w-28"
+        />
+        <button
+          onClick={addSlot}
+          disabled={isCreating}
+          className="bg-black text-white px-4 py-2 rounded"
+        >
+          {isCreating ? "Anlegen..." : "Slot hinzufügen"}
+        </button>
+      </div>
+
+      <div className="space-y-2">
+        <h3 className="font-medium">Slots am {selectedDate}</h3>
+        <div className="grid grid-cols-1 gap-2">
+          {slots?.sort((a, b) => a.time.localeCompare(b.time)).map((slot) => (
+            <div key={slot.id} className="flex items-center justify-between border rounded px-3 py-2">
+              <div className="flex items-center gap-3">
+                <span className="font-mono">{slot.time}</span>
+                <span className="text-sm text-gray-600">{slot.durationMinutes} Min</span>
+                <span className={`text-xs px-2 py-1 rounded ${slot.status === "free" ? "bg-green-100 text-green-800" : "bg-yellow-100 text-yellow-800"}`}>
+                  {slot.status === "free" ? "frei" : "reserviert"}
+                </span>
+              </div>
+              <div className="flex items-center gap-2">
+                <button
+                  onClick={() => removeSlot({ sessionId: localStorage.getItem("sessionId") || "", id: slot.id })}
+                  className="text-red-600 hover:underline"
+                  disabled={slot.status === "reserved"}
+                  title={slot.status === "reserved" ? "Slot ist reserviert" : "Slot löschen"}
+                >
+                  Löschen
+                </button>
+              </div>
+            </div>
+          ))}
+          {slots?.length === 0 && (
+            <div className="text-sm text-gray-600">Keine Slots vorhanden.</div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+

src/client/components/admin-bookings.tsx

@@ -144,6 +144,9 @@ export function AdminBookings() {
                 <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                   <div>{new Date(booking.appointmentDate).toLocaleDateString()}</div>
                   <div>{booking.appointmentTime}</div>
+                  {booking.slotId && (
+                    <div className="text-xs text-gray-500">Slot-ID: {booking.slotId}</div>
+                  )}
                 </td>
                 <td className="px-6 py-4 whitespace-nowrap">
                   <span className={`inline-flex px-2 py-1 text-xs font-semibold rounded-full ${getStatusColor(booking.status)}`}>
@@ -155,13 +158,13 @@ export function AdminBookings() {
                     {booking.status === "pending" && (
                       <>
                         <button
-                          onClick={() => updateBookingStatus({ id: booking.id, status: "confirmed" })}
+                          onClick={() => updateBookingStatus({ sessionId: localStorage.getItem("sessionId") || "", id: booking.id, status: "confirmed" })}
                           className="text-green-600 hover:text-green-900"
                         >
                           Confirm
                         </button>
                         <button
-                          onClick={() => updateBookingStatus({ id: booking.id, status: "cancelled" })}
+                          onClick={() => updateBookingStatus({ sessionId: localStorage.getItem("sessionId") || "", id: booking.id, status: "cancelled" })}
                           className="text-red-600 hover:text-red-900"
                         >
                           Cancel
@@ -171,13 +174,13 @@ export function AdminBookings() {
                     {booking.status === "confirmed" && (
                       <>
                         <button
-                          onClick={() => updateBookingStatus({ id: booking.id, status: "completed" })}
+                          onClick={() => updateBookingStatus({ sessionId: localStorage.getItem("sessionId") || "", id: booking.id, status: "completed" })}
                           className="text-blue-600 hover:text-blue-900"
                         >
                           Complete
                         </button>
                         <button
-                          onClick={() => updateBookingStatus({ id: booking.id, status: "cancelled" })}
+                          onClick={() => updateBookingStatus({ sessionId: localStorage.getItem("sessionId") || "", id: booking.id, status: "cancelled" })}
                           className="text-red-600 hover:text-red-900"
                         >
                           Cancel
@@ -186,7 +189,7 @@ export function AdminBookings() {
                     )}
                     {(booking.status === "cancelled" || booking.status === "completed") && (
                       <button
-                        onClick={() => updateBookingStatus({ id: booking.id, status: "confirmed" })}
+                        onClick={() => updateBookingStatus({ sessionId: localStorage.getItem("sessionId") || "", id: booking.id, status: "confirmed" })}
                         className="text-green-600 hover:text-green-900"
                       >
                         Reactivate

src/client/components/booking-form.tsx

@@ -8,66 +8,33 @@ export function BookingForm() {
   const [customerEmail, setCustomerEmail] = useState("");
   const [customerPhone, setCustomerPhone] = useState("");
   const [appointmentDate, setAppointmentDate] = useState("");
-  const [appointmentTime, setAppointmentTime] = useState("");
+  const [selectedSlotId, setSelectedSlotId] = useState<string>("");
   const [notes, setNotes] = useState("");
 
   const { data: treatments } = useQuery(
     queryClient.treatments.live.list.experimental_liveOptions()
   );
-
-  const { data: allBookings } = useQuery(
-    queryClient.bookings.live.list.experimental_liveOptions()
+  const { data: slotsByDate } = useQuery(
+    appointmentDate
+      ? queryClient.availability.live.byDate.experimental_liveOptions(appointmentDate)
+      : queryClient.availability.live.byDate.experimental_liveOptions("")
   );
 
-  const selectedDateBookings = allBookings?.filter(booking => 
-    booking.appointmentDate === appointmentDate
-  ) || [];
-
   const { mutate: createBooking, isPending } = useMutation(
     queryClient.bookings.create.mutationOptions()
   );
 
   const selectedTreatmentData = treatments?.find(t => t.id === selectedTreatment);
-
-  // Generate available time slots (9 AM to 6 PM, 30-minute intervals)
-  const generateTimeSlots = () => {
-    const slots: string[] = [];
-    for (let hour = 9; hour < 18; hour++) {
-      for (let minute = 0; minute < 60; minute += 30) {
-        const time = `${hour.toString().padStart(2, '0')}:${minute.toString().padStart(2, '0')}`;
-        slots.push(time);
-      }
-    }
-    return slots;
-  };
-
-  const availableTimeSlots = generateTimeSlots().filter(time => {
-    if (!selectedDateBookings || !selectedTreatmentData) return true;
-    
-    // Check if this time slot conflicts with existing bookings
-    const timeSlotStart = new Date(`${appointmentDate}T${time}:00`);
-    const timeSlotEnd = new Date(timeSlotStart.getTime() + selectedTreatmentData.duration * 60000);
-    
-    return !selectedDateBookings.some(booking => {
-      if (booking.status === 'cancelled') return false;
-      
-      const bookingStart = new Date(`${booking.appointmentDate}T${booking.appointmentTime}:00`);
-      const treatment = treatments?.find(t => t.id === booking.treatmentId);
-      if (!treatment) return false;
-      
-      const bookingEnd = new Date(bookingStart.getTime() + treatment.duration * 60000);
-      
-      return (timeSlotStart < bookingEnd && timeSlotEnd > bookingStart);
-    });
-  });
+  const availableSlots = (slotsByDate || []).filter(s => s.status === "free");
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault();
-    if (!selectedTreatment || !customerName || !customerEmail || !customerPhone || !appointmentDate || !appointmentTime) {
+    if (!selectedTreatment || !customerName || !customerEmail || !customerPhone || !appointmentDate || !selectedSlotId) {
       alert("Bitte fülle alle erforderlichen Felder aus");
       return;
     }
-
+    const slot = availableSlots.find(s => s.id === selectedSlotId);
+    const appointmentTime = slot?.time || "";
     createBooking({
       treatmentId: selectedTreatment,
       customerName,
@@ -76,6 +43,7 @@ export function BookingForm() {
       appointmentDate,
       appointmentTime,
       notes,
+      slotId: selectedSlotId,
     }, {
       onSuccess: () => {
         setSelectedTreatment("");
@@ -83,7 +51,7 @@ export function BookingForm() {
         setCustomerEmail("");
         setCustomerPhone("");
         setAppointmentDate("");
-        setAppointmentTime("");
+        setSelectedSlotId("");
         setNotes("");
         alert("Buchung erfolgreich erstellt! Wir werden dich kontaktieren, um deinen Termin zu bestätigen.");
       }
@@ -179,21 +147,23 @@ export function BookingForm() {
           </div>
           <div>
             <label className="block text-sm font-medium text-gray-700 mb-2">
-              Gewünschte Uhrzeit *
+              Verfügbare Uhrzeit *
             </label>
             <select
-              value={appointmentTime}
-              onChange={(e) => setAppointmentTime(e.target.value)}
+              value={selectedSlotId}
+              onChange={(e) => setSelectedSlotId(e.target.value)}
               className="w-full p-3 border border-gray-300 rounded-md focus:ring-2 focus:ring-pink-500 focus:border-pink-500"
               disabled={!appointmentDate || !selectedTreatment}
               required
             >
               <option value="">Zeit auswählen</option>
-              {availableTimeSlots.map((time) => (
-                <option key={time} value={time}>
-                  {time}
-                </option>
-              ))}
+              {availableSlots
+                .sort((a, b) => a.time.localeCompare(b.time))
+                .map((slot) => (
+                  <option key={slot.id} value={slot.id}>
+                    {slot.time} ({slot.durationMinutes} min)
+                  </option>
+                ))}
             </select>
           </div>
         </div>

src/server/lib/email-templates.ts

@@ -0,0 +1,81 @@
+import { readFile } from "node:fs/promises";
+import { fileURLToPath } from "node:url";
+import { dirname, resolve } from "node:path";
+
+let cachedLogoDataUrl: string | null = null;
+
+async function getLogoDataUrl(): Promise<string | null> {
+  if (cachedLogoDataUrl) return cachedLogoDataUrl;
+  try {
+    const __filename = fileURLToPath(import.meta.url);
+    const __dirname = dirname(__filename);
+    const logoPath = resolve(__dirname, "../../../assets/stargilnails_logo_transparent.png");
+    const buf = await readFile(logoPath);
+    const base64 = buf.toString("base64");
+    cachedLogoDataUrl = `data:image/png;base64,${base64}`;
+    return cachedLogoDataUrl;
+  } catch {
+    return null;
+  }
+}
+
+async function renderBrandedEmail(title: string, bodyHtml: string): Promise<string> {
+  const logo = await getLogoDataUrl();
+  return `
+  <div style="font-family: Arial, sans-serif; color: #0f172a; background:#fdf2f8; padding:24px;">
+    <table role="presentation" width="100%" cellspacing="0" cellpadding="0" style="max-width:640px; margin:0 auto; background:#ffffff; border-radius:12px; overflow:hidden; box-shadow:0 1px 3px rgba(0,0,0,0.06)">
+      <tr>
+        <td style="padding:24px 24px 0 24px; text-align:center;">
+          ${logo ? `<img src="${logo}" alt="Stargirlnails" style="width:120px; height:auto; display:inline-block;" />` : `<div style=\"font-size:24px\">💅</div>`}
+          <h1 style="margin:16px 0 0 0; font-size:22px; color:#db2777;">${title}</h1>
+        </td>
+      </tr>
+      <tr>
+        <td style="padding:16px 24px 24px 24px;">
+          <div style="font-size:16px; line-height:1.6; color:#334155;">
+            ${bodyHtml}
+          </div>
+          <hr style="border:none; border-top:1px solid #f1f5f9; margin:24px 0" />
+          <div style="font-size:12px; color:#64748b; text-align:center;">
+            &copy; ${new Date().getFullYear()} Stargirlnails Kiel • Professional Nail Care
+          </div>
+        </td>
+      </tr>
+    </table>
+  </div>`;
+}
+
+export async function renderBookingPendingHTML(params: { name: string; date: string; time: string }) {
+  const { name, date, time } = params;
+  const inner = `
+    <p>Hallo ${name},</p>
+    <p>wir haben deine Anfrage für <strong>${date}</strong> um <strong>${time}</strong> erhalten.</p>
+    <p>Wir bestätigen deinen Termin in Kürze. Du erhältst eine weitere E-Mail, sobald der Termin bestätigt ist.</p>
+    <p>Liebe Grüße,<br/>Stargirlnails Kiel</p>
+  `;
+  return renderBrandedEmail("Deine Terminanfrage ist eingegangen", inner);
+}
+
+export async function renderBookingConfirmedHTML(params: { name: string; date: string; time: string }) {
+  const { name, date, time } = params;
+  const inner = `
+    <p>Hallo ${name},</p>
+    <p>wir haben deinen Termin am <strong>${date}</strong> um <strong>${time}</strong> bestätigt.</p>
+    <p>Wir freuen uns auf dich!</p>
+    <p>Liebe Grüße,<br/>Stargirlnails Kiel</p>
+  `;
+  return renderBrandedEmail("Termin bestätigt", inner);
+}
+
+export async function renderBookingCancelledHTML(params: { name: string; date: string; time: string }) {
+  const { name, date, time } = params;
+  const inner = `
+    <p>Hallo ${name},</p>
+    <p>dein Termin am <strong>${date}</strong> um <strong>${time}</strong> wurde abgesagt.</p>
+    <p>Bitte buche einen neuen Termin. Bei Fragen helfen wir dir gerne weiter.</p>
+    <p>Liebe Grüße,<br/>Stargirlnails Kiel</p>
+  `;
+  return renderBrandedEmail("Termin abgesagt", inner);
+}
+
+

src/server/lib/email.ts

@@ -0,0 +1,46 @@
+type SendEmailParams = {
+  to: string | string[];
+  subject: string;
+  text?: string;
+  html?: string;
+  from?: string;
+  cc?: string | string[];
+  bcc?: string | string[];
+};
+
+const RESEND_API_KEY = process.env.RESEND_API_KEY;
+const DEFAULT_FROM = process.env.EMAIL_FROM || "Stargirlnails <no-reply@stargirlnails.de>";
+
+export async function sendEmail(params: SendEmailParams): Promise<{ success: boolean }> {
+  if (!RESEND_API_KEY) {
+    // In development or if not configured, skip sending but don't fail the flow
+    console.warn("Resend API key not configured. Skipping email send.");
+    return { success: false };
+  }
+
+  const response = await fetch("https://api.resend.com/emails", {
+    method: "POST",
+    headers: {
+      "Authorization": `Bearer ${RESEND_API_KEY}`,
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify({
+      from: params.from || DEFAULT_FROM,
+      to: Array.isArray(params.to) ? params.to : [params.to],
+      subject: params.subject,
+      text: params.text,
+      html: params.html,
+      cc: params.cc ? (Array.isArray(params.cc) ? params.cc : [params.cc]) : undefined,
+      bcc: params.bcc ? (Array.isArray(params.bcc) ? params.bcc : [params.bcc]) : undefined,
+    }),
+  });
+
+  if (!response.ok) {
+    const body = await response.text().catch(() => "");
+    console.error("Resend send error:", response.status, body);
+    return { success: false };
+  }
+  return { success: true };
+}
+
+

src/server/rpc/availability.ts

@@ -0,0 +1,118 @@
+import { call, os } from "@orpc/server";
+import { z } from "zod";
+import { randomUUID } from "crypto";
+import { createKV } from "@/server/lib/create-kv";
+
+const AvailabilitySchema = z.object({
+  id: z.string(),
+  date: z.string(), // YYYY-MM-DD
+  time: z.string(), // HH:MM
+  durationMinutes: z.number().int().positive(),
+  status: z.enum(["free", "reserved"]),
+  reservedByBookingId: z.string().optional(),
+  createdAt: z.string(),
+});
+
+export type Availability = z.output<typeof AvailabilitySchema>;
+
+const kv = createKV<Availability>("availability");
+
+// Minimal Owner-Prüfung über Sessions/Users KV
+type Session = { id: string; userId: string; expiresAt: string; createdAt: string };
+type User = { id: string; username: string; email: string; passwordHash: string; role: "customer" | "owner"; createdAt: string };
+const sessionsKV = createKV<Session>("sessions");
+const usersKV = createKV<User>("users");
+
+async function assertOwner(sessionId: string): Promise<void> {
+  const session = await sessionsKV.getItem(sessionId);
+  if (!session) throw new Error("Invalid session");
+  if (new Date(session.expiresAt) < new Date()) throw new Error("Session expired");
+  const user = await usersKV.getItem(session.userId);
+  if (!user || user.role !== "owner") throw new Error("Forbidden");
+}
+
+const create = os
+  .input(
+    z.object({
+      sessionId: z.string(),
+      date: z.string().regex(/^\d{4}-\d{2}-\d{2}$/),
+      time: z.string().regex(/^\d{2}:\d{2}$/),
+      durationMinutes: z.number().int().positive(),
+    })
+  )
+  .handler(async ({ input }) => {
+    await assertOwner(input.sessionId);
+    const id = randomUUID();
+    const slot: Availability = {
+      id,
+      date: input.date,
+      time: input.time,
+      durationMinutes: input.durationMinutes,
+      status: "free",
+      createdAt: new Date().toISOString(),
+    };
+    await kv.setItem(id, slot);
+    return slot;
+  });
+
+const update = os
+  .input(AvailabilitySchema.extend({ sessionId: z.string() }))
+  .handler(async ({ input }) => {
+    await assertOwner(input.sessionId);
+    const { sessionId, ...rest } = input as any;
+    await kv.setItem(rest.id, rest as Availability);
+    return rest as Availability;
+  });
+
+const remove = os
+  .input(z.object({ sessionId: z.string(), id: z.string() }))
+  .handler(async ({ input }) => {
+    await assertOwner(input.sessionId);
+    const slot = await kv.getItem(input.id);
+    if (slot && slot.status === "reserved") throw new Error("Cannot delete reserved slot");
+    await kv.removeItem(input.id);
+  });
+
+const list = os.handler(async () => {
+  return kv.getAllItems();
+});
+
+const get = os.input(z.string()).handler(async ({ input }) => {
+  return kv.getItem(input);
+});
+
+const getByDate = os
+  .input(z.string()) // YYYY-MM-DD
+  .handler(async ({ input }) => {
+    const all = await kv.getAllItems();
+    return all.filter((s) => s.date === input);
+  });
+
+const live = {
+  list: os.handler(async function* ({ signal }) {
+    yield call(list, {}, { signal });
+    for await (const _ of kv.subscribe()) {
+      yield call(list, {}, { signal });
+    }
+  }),
+  byDate: os
+    .input(z.string())
+    .handler(async function* ({ input, signal }) {
+      yield call(getByDate, input, { signal });
+      for await (const _ of kv.subscribe()) {
+        yield call(getByDate, input, { signal });
+      }
+    }),
+};
+
+export const router = {
+  create,
+  update,
+  remove,
+  list,
+  get,
+  getByDate,
+  live,
+};
+
+

src/server/rpc/bookings.ts

@@ -2,6 +2,9 @@ import { call, os } from "@orpc/server";
 import { z } from "zod";
 import { randomUUID } from "crypto";
 import { createKV } from "@/server/lib/create-kv";
+import { createKV as createAvailabilityKV } from "@/server/lib/create-kv";
+import { sendEmail } from "@/server/lib/email";
+import { renderBookingPendingHTML, renderBookingConfirmedHTML, renderBookingCancelledHTML } from "@/server/lib/email-templates";
 
 const BookingSchema = z.object({
   id: z.string(),
@@ -14,15 +17,36 @@ const BookingSchema = z.object({
   status: z.enum(["pending", "confirmed", "cancelled", "completed"]),
   notes: z.string().optional(),
   createdAt: z.string(),
+  slotId: z.string().optional(),
 });
 
 type Booking = z.output<typeof BookingSchema>;
 
 const kv = createKV<Booking>("bookings");
+type Availability = {
+  id: string;
+  date: string;
+  time: string;
+  durationMinutes: number;
+  status: "free" | "reserved";
+  reservedByBookingId?: string;
+  createdAt: string;
+};
+const availabilityKV = createAvailabilityKV<Availability>("availability");
 
 const create = os
   .input(BookingSchema.omit({ id: true, createdAt: true, status: true }))
   .handler(async ({ input }) => {
+    // Prevent double booking: same customer email with pending/confirmed on same date
+    const existing = await kv.getAllItems();
+    const hasConflict = existing.some(b =>
+      b.customerEmail.toLowerCase() === input.customerEmail.toLowerCase() &&
+      b.appointmentDate === input.appointmentDate &&
+      (b.status === "pending" || b.status === "confirmed")
+    );
+    if (hasConflict) {
+      throw new Error("Du hast bereits eine Buchung für dieses Datum. Bitte wähle einen anderen Tag oder storniere zuerst.");
+    }
     const id = randomUUID();
     const booking = { 
       id, 
@@ -30,21 +54,118 @@ const create = os
       status: "pending" as const,
       createdAt: new Date().toISOString()
     };
+    // If a slotId is provided, tentatively reserve the slot (mark reserved but pending)
+    if (booking.slotId) {
+      const slot = await availabilityKV.getItem(booking.slotId);
+      if (!slot) throw new Error("Availability slot not found");
+      if (slot.status !== "free") throw new Error("Slot not available");
+      const updatedSlot: Availability = {
+        ...slot,
+        status: "reserved",
+        reservedByBookingId: id,
+      };
+      await availabilityKV.setItem(slot.id, updatedSlot);
+    }
     await kv.setItem(id, booking);
+
+    // Notify customer: request received (pending)
+    void (async () => {
+      const html = await renderBookingPendingHTML({ name: input.customerName, date: input.appointmentDate, time: input.appointmentTime });
+      await sendEmail({
+      to: input.customerEmail,
+      subject: "Deine Terminanfrage ist eingegangen",
+      text: `Hallo ${input.customerName},\n\nwir haben deine Anfrage für ${input.appointmentDate} um ${input.appointmentTime} erhalten. Wir bestätigen deinen Termin in Kürze.\n\nLiebe Grüße\nStargirlnails Kiel`,
+        html,
+      cc: process.env.ADMIN_EMAIL ? [process.env.ADMIN_EMAIL] : undefined,
+      }).catch(() => {});
+    })();
     return booking;
   });
 
+// Owner check reuse (simple inline version)
+type Session = { id: string; userId: string; expiresAt: string; createdAt: string };
+type User = { id: string; username: string; email: string; passwordHash: string; role: "customer" | "owner"; createdAt: string };
+const sessionsKV = createAvailabilityKV<Session>("sessions");
+const usersKV = createAvailabilityKV<User>("users");
+async function assertOwner(sessionId: string): Promise<void> {
+  const session = await sessionsKV.getItem(sessionId);
+  if (!session) throw new Error("Invalid session");
+  if (new Date(session.expiresAt) < new Date()) throw new Error("Session expired");
+  const user = await usersKV.getItem(session.userId);
+  if (!user || user.role !== "owner") throw new Error("Forbidden");
+}
+
 const updateStatus = os
   .input(z.object({
+    sessionId: z.string(),
     id: z.string(),
     status: z.enum(["pending", "confirmed", "cancelled", "completed"])
   }))
   .handler(async ({ input }) => {
+    await assertOwner(input.sessionId);
     const booking = await kv.getItem(input.id);
     if (!booking) throw new Error("Booking not found");
     
+    const previousStatus = booking.status;
     const updatedBooking = { ...booking, status: input.status };
     await kv.setItem(input.id, updatedBooking);
+
+    // Manage availability slot state transitions
+    if (booking.slotId) {
+      const slot = await availabilityKV.getItem(booking.slotId);
+      if (slot) {
+        if (input.status === "cancelled") {
+          // Free the slot again
+          await availabilityKV.setItem(slot.id, {
+            ...slot,
+            status: "free",
+            reservedByBookingId: undefined,
+          });
+        } else if (input.status === "pending") {
+          // keep reserved as pending
+          if (slot.status !== "reserved") {
+            await availabilityKV.setItem(slot.id, {
+              ...slot,
+              status: "reserved",
+              reservedByBookingId: booking.id,
+            });
+          }
+        } else if (input.status === "confirmed" || input.status === "completed") {
+          // keep reserved; optionally noop
+          if (slot.status !== "reserved" || slot.reservedByBookingId !== booking.id) {
+            await availabilityKV.setItem(slot.id, {
+              ...slot,
+              status: "reserved",
+              reservedByBookingId: booking.id,
+            });
+          }
+        }
+      }
+    }
+    // Email notifications on status changes
+    try {
+      if (input.status === "confirmed") {
+        const html = await renderBookingConfirmedHTML({ name: booking.customerName, date: booking.appointmentDate, time: booking.appointmentTime });
+        await sendEmail({
+          to: booking.customerEmail,
+          subject: "Dein Termin wurde bestätigt",
+          text: `Hallo ${booking.customerName},\n\nwir haben deinen Termin am ${booking.appointmentDate} um ${booking.appointmentTime} bestätigt.\n\nBis bald!\nStargirlnails Kiel`,
+          html,
+          cc: process.env.ADMIN_EMAIL ? [process.env.ADMIN_EMAIL] : undefined,
+        });
+      } else if (input.status === "cancelled") {
+        const html = await renderBookingCancelledHTML({ name: booking.customerName, date: booking.appointmentDate, time: booking.appointmentTime });
+        await sendEmail({
+          to: booking.customerEmail,
+          subject: "Dein Termin wurde abgesagt",
+          text: `Hallo ${booking.customerName},\n\nleider wurde dein Termin am ${booking.appointmentDate} um ${booking.appointmentTime} abgesagt. Bitte buche einen neuen Termin.\n\nLiebe Grüße\nStargirlnails Kiel`,
+          html,
+          cc: process.env.ADMIN_EMAIL ? [process.env.ADMIN_EMAIL] : undefined,
+        });
+      }
+    } catch (e) {
+      console.error("Email send failed:", e);
+    }
     return updatedBooking;
   });
 

src/server/rpc/index.ts

@@ -2,10 +2,12 @@ import { demo } from "./demo";
 import { router as treatments } from "./treatments";
 import { router as bookings } from "./bookings";
 import { router as auth } from "./auth";
+import { router as availability } from "./availability";
 
 export const router = {
   demo,
   treatments,
   bookings,
   auth,
+  availability,
 };