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

const chatSchema = new Schema({
    sender: {
        type: mongoose.Schema.Types.ObjectId,
        refPath: 'senderModel',
        required: true
    },
    senderModel: {
        type: String,
        required: true,
        enum: ['user', 'business']
    },
    recipient: {
        type: mongoose.Schema.Types.ObjectId,
        refPath: 'recipientModel',
        required: true
    },
    recipientModel: {
        type: String,
        required: true,
        enum: ['user', 'business']
    },
    message: {
        type: String,
        required: true
    },
    timestamp: {
        type: Date,
        default: Date.now
    },
    isRead: {
        type: Boolean,
        default: false
    }
}, { timestamps: true });

const Chat = mongoose.model('chat', chatSchema);
module.exports = Chat;