import mongoose from "mongoose";

const InvitationSchema = new mongoose.Schema({
  code: {
    type: String,
    required: true,
    unique: true,
  },
  createdBy: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Staffs',
    required: true,
  },
  isUsed: {
    type: Boolean,
    default: false,
  },
  usedBy: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Vendor',
    default: null,
  },
  expiresAt: {
    type: Date,
    required: true,
  },
  createdAt: {
    type: Date,
    default: Date.now,
  },
  usedAt: {
    type: Date,
    default: null,
  }
});

InvitationSchema.index({ expiresAt: 1 }, { expireAfterSeconds: 0 });
InvitationSchema.index({ code: 1 });

export default mongoose.model("Invitation", InvitationSchema);