const mongoose = require('mongoose');
const { Schema } = mongoose;

const BetParticipantSchema = new Schema({
  user: { type: Number, required: true }, // Stores the PostgreSQL User ID
  role: { type: String, enum: ['PARTICIPANT', 'OBSERVER'], required: true },
}, { _id: false });

const BetSchema = new mongoose.Schema({
  title: { type: String, required: true },
  description: { type: String },
  stake: { type: String, required: true },
  participants: [BetParticipantSchema],
  status: { type: String, enum: ['ACTIVE', 'AWAITING_VALIDATION', 'COMPLETED', 'EXPIRED'], required: true },
  startDate: { type: Date, default: Date.now },
  endDate: { type: Date, default: null },
  isPublic: { type: Boolean, default: false },
  groupId: { type: String, default: null }, // Stores the PostgreSQL Group ID
  winner: { type: Number, default: null }, // Stores the PostgreSQL User ID
});

BetSchema.set('toJSON', {
  virtuals: true,
  versionKey: false,
  transform: function (doc, ret) {
    delete ret._id;
  }
});

module.exports = mongoose.model('Bet', BetSchema);