feat: implement Sonner notifications, add Setting model, and reorganize user management into settings navigation.

src/app/actions.ts

@@ -723,3 +723,64 @@ export async function deleteSubmission(submission_id: string, user_id: string) {
     return { success: false, error: 'Gagal membatalkan pesanan' };
   }
 }
+
+// --- SETTINGS ACTIONS ---
+
+export async function getSettings() {
+  const settings = await prisma.setting.findMany()
+  const obj: Record<string, string> = {}
+  settings.forEach(s => {
+    obj[s.key] = s.value
+  })
+  return obj
+}
+
+export async function updateSettings(settings: Record<string, string>) {
+  try {
+    for (const key of Object.keys(settings)) {
+      await prisma.setting.upsert({
+        where: { key },
+        update: { value: settings[key] },
+        create: { key, value: settings[key] }
+      })
+    }
+    return { success: true }
+  } catch (error) {
+    console.error(error)
+    return { success: false, error: 'Gagal update settings' }
+  }
+}
+
+// --- BROADCAST ACTIONS ---
+
+export async function broadcastToMattermost(orderId: string, orderUrl: string) {
+  try {
+    const order = await prisma.order.findUnique({
+      where: { id: orderId }
+    })
+    if (!order) return { success: false, error: 'Order not found' }
+
+    const settings = await getSettings()
+    const webhookUrl = settings.MATTERMOST_WEBHOOK_URL
+    let template = settings.MATTERMOST_TEMPLATE || 'Halo tim! Lagi ada orderan open nih untuk {title}. Mumpung belum di-checkout, yang mau ikutan nitip bisa langsung cek ke sini ya: {url}'
+    
+    if (!webhookUrl) return { success: false, error: 'Webhook URL belum di-setting' }
+
+    const message = template.replace('{title}', order.title).replace('{url}', orderUrl)
+    
+    const res = await fetch(webhookUrl, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ text: message })
+    })
+
+    if (!res.ok) {
+      throw new Error(`Mattermost API Error: ${res.statusText}`)
+    }
+
+    return { success: true }
+  } catch (error) {
+    console.error(error)
+    return { success: false, error: 'Gagal mengirim ke Mattermost' }
+  }
+}