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const mongoose = require('mongoose');
const conversationSchema = new mongoose.Schema({
type: {
type: String,
enum: ['direct', 'group'],
required: true
},
name: {
type: String,
required: function() { return this.type !== 'direct'; }
},
description: {
type: String,
maxlength: 500,
default: ''
},
avatar: {
type: String,
default: null
},
createdBy: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User',
required: true
},
participants: [{
user: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User',
required: true
},
role: {
type: String,
enum: ['member', 'admin', 'owner'],
default: 'member'
},
joinedAt: {
type: Date,
default: Date.now
},
lastRead: {
type: Date,
default: Date.now
}
}],
lastMessage: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Message',
default: null
},
settings: {
isPublic: {
type: Boolean,
default: false
},
allowInvites: {
type: Boolean,
default: true
},
adminOnlyMessages: {
type: Boolean,
default: false
}
},
inviteLinks: [{
code: String,
createdBy: mongoose.Schema.Types.ObjectId,
expiresAt: Date,
maxUses: Number,
uses: { type: Number, default: 0 },
isActive: { type: Boolean, default: true },
createdAt: { type: Date, default: Date.now }
}]
}, {
timestamps: true
});
// Index for better performance
conversationSchema.index({ 'participants.user': 1 });
conversationSchema.index({ type: 1, updatedAt: -1 });
conversationSchema.index({ lastMessage: 1 });
// Static method to find direct conversation between two users
conversationSchema.statics.findDirectConversation = async function(userId1, userId2) {
return this.findOne({
type: 'direct',
'participants.user': { $all: [userId1, userId2] },
$expr: { $eq: [{ $size: '$participants' }, 2] }
});
};
module.exports = mongoose.model('Conversation', conversationSchema); |