Add example sending email code via resend

packages/api/src/auth/user.ts

@@ -105,7 +105,28 @@ export const sendEmailSignIn = async (ctx: ApiContextProps, email: string) => {
   }).onConflictDoUpdate({ target: VerificationCodeTable.userId, set: props })
   const resetLink = ctx.env.APP_URL + '/password-reset/update-password?code=' + encodeURIComponent(props.code) + '&email=' + encodeURIComponent(email)
 
-  // TODO send email
+  if (ctx.env.RESEND_API_KEY) {
+    // send email
+    const sendResult = await fetch('https://api.resend.com/emails', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': `Bearer ${ctx.env.RESEND_API_KEY}`
+      },
+      body: JSON.stringify({
+        from: ctx.env.NEXT_PUBLIC_SUPPORT_EMAIL,
+        to: email,
+        subject: 'T4 App verification code',
+        html: `<p>This email was used to sign in to ${ctx.env.APP_URL}.</p>
+          <p><a href="${resetLink.replaceAll('&', '&amp;')}">Click here to continue to sign in.</a></p>
+          <p>Code: ${props.code}</p>
+          <p>If you did not request this code, you can ignore this email or reply to let us know.</p>
+        `
+      })
+    });
+    // TODO check sendResult response for success
+    return { success: true }
+  }
   throw new TRPCError({ message: `Sending the access code ${props.code} to ${email} has not been implemented. It should email a link to ${resetLink}.`, code: "METHOD_NOT_SUPPORTED" })
 }