other

backend/models/Buyer.model.js

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+import mongoose from 'mongoose';
+
+const BuyerSchema = new mongoose.Schema({
+  telegramId: { type: Number, required: true, unique: true },
+  username: { type: String, required: true },
+  createdAt: { type: Date, default: Date.now },
+  banned: { type: Boolean, default: false }
+});
+
+export default mongoose.model('Buyer', BuyerSchema);