import dotenv from 'dotenv'

dotenv.config()

const BASE = process.env.TEST_BASE_URL || 'http://localhost:3000'

function pad(n){ return String(n).padStart(2,'0') }

async function okOrDie(res, msg){
  if (!res.ok) {
    const text = await res.text().catch(()=>'<no body>')
    console.error(`${msg}: ${res.status} ${text}`)
    process.exit(1)
  }
}

// choose a test date 14 days from now
const d = new Date(Date.now() + 14*24*60*60*1000)
const y = d.getFullYear()
const m = pad(d.getMonth()+1)
const day = pad(d.getDate())
const iso = `${y}-${m}-${day}`
const weekday = d.getDay()

console.log('Using test date', iso, 'weekday', weekday)

async function ensureAvailability(){
  console.log('Ensuring weekly availability for weekday', weekday)
  const payload = { weekday, start_time: '10:00', end_time: '22:00', note: 'automated test slot' }
  const res = await fetch(`${BASE}/api/availability/weekly`, { method: 'POST', headers: {'Content-Type':'application/json'}, body: JSON.stringify(payload) })
  if (res.status === 409) {
    console.log('Availability already exists (ok)')
    return
  }
  await okOrDie(res, 'Failed to create availability')
  console.log('Created weekly availability')
}

async function clearBlocked(){
  console.log('Clearing blocked dates if any')
  const res = await fetch(`${BASE}/api/availability/blocked`)
  await okOrDie(res, 'Failed to fetch blocked')
  const list = await res.json()
  for (const b of list || []){
    if (b.block_date === iso){
      console.log('Found existing block for date; deleting', b.id)
      await fetch(`${BASE}/api/availability/blocked`, { method: 'DELETE', headers: {'Content-Type':'application/json'}, body: JSON.stringify({ id: b.id }) })
    }
  }
}

async function createBooking(start_time, duration_hours){
  const payload = {
    name: 'Test User',
    email: 'test@example.com',
    phone: '0000',
    party_size: 10,
    date: iso,
    start_time,
    duration_hours,
    message: 'Automated test'
  }
  const res = await fetch(`${BASE}/api/bookings`, { method: 'POST', headers: {'Content-Type':'application/json'}, body: JSON.stringify(payload) })
  const body = await res.json().catch(()=>null)
  return { status: res.status, ok: res.ok, body }
}

async function run(){
  // check server
  try {
    const ping = await fetch(`${BASE}/api/availability/weekly`)
    if (!ping.ok) {
      console.error('Server returned non-ok for availability:', ping.status)
      process.exit(1)
    }
  } catch (err) {
    console.error('Could not reach server at', BASE, err.message)
    process.exit(1)
  }

  await ensureAvailability()
  await clearBlocked()

  console.log('Creating initial booking at 12:00 for 3h (should succeed)')
  const r1 = await createBooking('12:00', 3)
  console.log('Result:', r1.status, r1.body)
  if (!r1.ok) {
    console.error('Expected first booking to succeed')
    process.exit(1)
  }

  console.log('Creating overlapping booking at 13:00 for 2h (should be rejected 409)')
  const r2 = await createBooking('13:00', 2)
  console.log('Result:', r2.status, r2.body)
  if (r2.status !== 409) {
    console.error('Expected overlap booking to be rejected with 409')
    process.exit(1)
  }

  console.log('Test suite passed')
}

run().catch(err => { console.error(err); process.exit(1) })