export const dynamic = 'force-dynamic'

import { NextRequest, NextResponse } from 'next/server'
import { asAdmin } from '@/lib/db/with-user'
import { users } from '@/lib/db/schema'
import { eq } from 'drizzle-orm'
import { verifyPassword } from '@/lib/auth/password'
import { createSession } from '@/lib/auth/session'

export async function POST(req: NextRequest) {
  const { email, password } = await req.json()
  if (!email || !password) {
    return NextResponse.json({ error: 'Email and password required' }, { status: 400 })
  }

  const [user] = await asAdmin(db =>
    db.select({
      id: users.id,
      email: users.email,
      name: users.name,
      role: users.role,
      siteId: users.siteId,
      passwordHash: users.passwordHash,
      active: users.active,
    }).from(users).where(eq(users.email, email.toLowerCase())).limit(1)
  )

  if (!user || !user.active) {
    return NextResponse.json({ error: 'Invalid credentials' }, { status: 401 })
  }

  if (!user.passwordHash) {
    return NextResponse.json({ error: 'Account not configured — contact admin' }, { status: 401 })
  }

  const valid = await verifyPassword(password, user.passwordHash)
  if (!valid) {
    return NextResponse.json({ error: 'Invalid credentials' }, { status: 401 })
  }

  // Update last_login_at
  await asAdmin(db => db.update(users).set({ lastLoginAt: new Date() }).where(eq(users.id, user.id)))

  const token = await createSession({
    sub: user.id,
    role: user.role,
    siteId: user.siteId ?? null,
    name: user.name,
  })

  const appUrl = process.env.APP_URL ?? ''
  const res = NextResponse.json({ ok: true })
  res.cookies.set('ims_session', token, {
    httpOnly: true,
    secure: appUrl.startsWith('https'),
    sameSite: 'lax',
    maxAge: 8 * 60 * 60,
    path: '/',
  })
  return res
}