p 1 and 2 compeleted

apps/admin/src/lib/email.ts

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+import { Resend } from "resend";
+import { render } from "@react-email/render";
+import log from "./logger";
+
+/**
+ * Email service using Resend
+ *
+ * Environment variables required:
+ * - RESEND_API_KEY: API key from Resend dashboard
+ * - EMAIL_FROM: Sender email address (e.g., "FitAI <noreply@fitai.com>")
+ * - EMAIL_REPLY_TO: Reply-to email address (optional)
+ */
+
+const resend = new Resend(process.env.RESEND_API_KEY);
+
+const DEFAULT_FROM = process.env.EMAIL_FROM || "FitAI <noreply@fitai.com>";
+const DEFAULT_REPLY_TO = process.env.EMAIL_REPLY_TO;
+
+export interface SendEmailOptions {
+  to: string | string[];
+  subject: string;
+  react: React.ReactElement;
+  from?: string;
+  replyTo?: string;
+}
+
+/**
+ * Send an email using Resend
+ *
+ * @param options - Email options including recipient, subject, and React component
+ * @returns Response from Resend API
+ *
+ * @example
+ * ```tsx
+ * import { WelcomeEmail } from '@/emails/welcome-email';
+ *
+ * await sendEmail({
+ *   to: 'user@example.com',
+ *   subject: 'Welcome to FitAI',
+ *   react: <WelcomeEmail name="John" />
+ * });
+ * ```
+ */
+export async function sendEmail({
+  to,
+  subject,
+  react,
+  from = DEFAULT_FROM,
+  replyTo = DEFAULT_REPLY_TO,
+}: SendEmailOptions) {
+  try {
+    // Check if email is configured
+    if (!process.env.RESEND_API_KEY) {
+      log.warn("RESEND_API_KEY not configured. Email not sent.", {
+        to,
+        subject,
+      });
+      return { success: false, error: "Email not configured" };
+    }
+
+    const { data, error } = await resend.emails.send({
+      from,
+      to,
+      subject,
+      react,
+      ...(replyTo && { replyTo }),
+    });
+
+    if (error) {
+      log.error("Failed to send email", error, { to, subject });
+      return { success: false, error: error.message };
+    }
+
+    log.info("Email sent successfully", { to, subject, emailId: data?.id });
+    return { success: true, data };
+  } catch (error) {
+    log.error("Email service error", error, { to, subject });
+    return { success: false, error: "Email service error" };
+  }
+}
+
+/**
+ * Send a welcome email to a new user
+ */
+export async function sendWelcomeEmail(email: string, name: string) {
+  const { WelcomeEmail } = await import("@/emails/welcome-email");
+
+  return sendEmail({
+    to: email,
+    subject: "Welcome to FitAI!",
+    react: WelcomeEmail({ name }),
+  });
+}
+
+/**
+ * Send an invitation email to a new user
+ */
+export async function sendInvitationEmail(
+  email: string,
+  role: string,
+  inviteUrl: string,
+) {
+  const { UserInvitationEmail } = await import(
+    "@/emails/user-invitation-email"
+  );
+
+  return sendEmail({
+    to: email,
+    subject: "You've been invited to join FitAI",
+    react: UserInvitationEmail({ email, role, inviteUrl }),
+  });
+}
+
+/**
+ * Send a trainer assignment notification email
+ */
+export async function sendTrainerAssignmentEmail(
+  clientEmail: string,
+  clientName: string,
+  trainerName: string,
+) {
+  const { TrainerAssignmentEmail } = await import(
+    "@/emails/trainer-assignment-email"
+  );
+
+  return sendEmail({
+    to: clientEmail,
+    subject: "You've been assigned a trainer",
+    react: TrainerAssignmentEmail({ clientName, trainerName }),
+  });
+}
+
+/**
+ * Send a recommendation notification email to a client
+ */
+export async function sendRecommendationEmail(
+  clientEmail: string,
+  clientName: string,
+  recommendationText: string,
+) {
+  const { RecommendationEmail } = await import("@/emails/recommendation-email");
+
+  return sendEmail({
+    to: clientEmail,
+    subject: "New fitness recommendation from your trainer",
+    react: RecommendationEmail({ clientName, recommendationText }),
+  });
+}