first commit

models/certificate.js

@@ -0,0 +1,32 @@
+const mongoose = require('mongoose');
+
+const certificateSchema = new mongoose.Schema({
+  certification_number: {
+    type: String, required: true, unique: true, trim: true
+  },
+  student_name: {
+    type: String, required: true, trim: true
+  },
+  program_name: {
+    type: String, required: true, trim: true
+  },
+  department: {
+    type: mongoose.Schema.Types.ObjectId, ref: 'Department', required: true
+  },
+  level: {
+    type: mongoose.Schema.Types.ObjectId, ref: 'Level', required: true
+  },
+  issued_date: {
+    type: Date, required: true
+  },
+  status: {
+    type: String, enum: ['active', 'revoked'], default: 'active'
+  },
+  // Optional personal info
+  passport_number: { type: String, trim: true },
+  address:         { type: String, trim: true },
+  // Document image
+  certificate_image: { type: String }
+}, { timestamps: true });
+
+module.exports = mongoose.model('Certificate', certificateSchema);