import { NextResponse } from 'next/server'
import crypto from 'crypto'
import { setTurnCredentials } from '../../../coturn'

const turnHost = process.env.TURN_HOST || '127.0.0.1'

export async function POST(): Promise<NextResponse> {
    if (!process.env.COTURN_ENABLED) {
        return NextResponse.json({
            iceServers: [
                { urls: 'stun:stun.l.google.com:19302' }
            ]
        })
    }

    // Generate ephemeral credentials
    const username = crypto.randomBytes(8).toString('hex')
    const password = crypto.randomBytes(8).toString('hex')
    const ttl = 86400 // 24 hours

    // Store credentials in Redis
    await setTurnCredentials(username, password, ttl)

    return NextResponse.json({
        iceServers: [
            { urls: 'stun:stun.l.google.com:19302' },
            {
                urls: [
                    `turn:${turnHost}:3478`,
                    `turns:${turnHost}:5349`
                ],
                username,
                credential: password
            }
        ]
    })
}