export const dynamic = 'force-dynamic'
export const runtime = 'nodejs'

import { NextResponse } from 'next/server'
import { voiceBus } from '@/lib/voice-bus'
import { addTimer, removeTimer, listActive } from '@/lib/timers'

function bearerOk(req: Request): boolean {
  const expected = process.env.VOICE_API_KEY
  if (!expected) return false
  const auth = req.headers.get('authorization') || ''
  const token = auth.replace(/^Bearer\s+/i, '').trim()
  return token === expected
}

export async function GET(req: Request) {
  // Browser (cookie auth via middleware) will reach here — listing is public to logged-in user.
  // Script with bearer can also GET it.
  return NextResponse.json({ timers: listActive() })
}

export async function POST(req: Request) {
  if (!bearerOk(req)) {
    return NextResponse.json({ error: 'unauthorized' }, { status: 401 })
  }

  const body = await req.json().catch(() => null)
  if (!body || typeof body.action !== 'string') {
    return NextResponse.json({ error: 'action required' }, { status: 400 })
  }

  if (body.action === 'start') {
    const seconds = Number(body.seconds)
    const label = typeof body.label === 'string' ? body.label.slice(0, 80) : 'Таймер'
    const agent = body.agent === 'lusya' ? 'lusya' : 'cosmo'
    if (!Number.isFinite(seconds) || seconds < 1 || seconds > 24 * 3600) {
      return NextResponse.json({ error: 'seconds must be 1..86400' }, { status: 400 })
    }
    const endsAt = new Date(Date.now() + seconds * 1000).toISOString()
    const t = addTimer({ label, endsAt, agent })
    voiceBus.emit('voice', {
      event: 'timer_start',
      timer: t,
      timestamp: new Date().toISOString(),
    })
    return NextResponse.json({ timer: t })
  }

  if (body.action === 'cancel') {
    const id = typeof body.id === 'string' ? body.id : ''
    if (!id) return NextResponse.json({ error: 'id required' }, { status: 400 })
    const ok = removeTimer(id)
    if (ok) {
      voiceBus.emit('voice', {
        event: 'timer_cancel',
        id,
        timestamp: new Date().toISOString(),
      })
    }
    return NextResponse.json({ cancelled: ok })
  }

  return NextResponse.json({ error: `unknown action: ${body.action}` }, { status: 400 })
}