import { NextResponse } from 'next/server'
import { db } from '@/lib/db'

export const dynamic = 'force-dynamic'

// GET /api/aos/contracts — contracts list with company, expiry stats
export async function GET() {
  try {
    const contracts = await db.contract.findMany({
      orderBy: { updatedAt: 'desc' },
    })

    // enrich with company names (separate query to keep SQLite happy)
    const companyIds = [...new Set(contracts.map((c) => c.companyId))]
    const companies = await db.company.findMany({ where: { id: { in: companyIds } }, select: { id: true, name: true } })
    const companyMap = new Map(companies.map((c) => [c.id, c.name]))

    const enriched = contracts.map((c) => ({ ...c, companyName: companyMap.get(c.companyId) ?? '—' }))

    const stats = {
      total: contracts.length,
      active: contracts.filter((c) => c.status === 'active').length,
      draft: contracts.filter((c) => c.status === 'draft').length,
      sent: contracts.filter((c) => c.status === 'sent').length,
      signed: contracts.filter((c) => c.status === 'signed' || c.status === 'active').length,
      expired: contracts.filter((c) => c.status === 'expired').length,
      expiringSoon: contracts.filter((c) => {
        if (!c.endDate || c.status === 'expired') return false
        const days = (c.endDate.getTime() - Date.now()) / 86400000
        return days <= 30 && days >= 0
      }).length,
      totalValueCents: contracts.filter((c) => c.status === 'active').reduce((s, c) => s + c.valueCents, 0),
    }

    return NextResponse.json({ contracts: enriched, stats })
  } catch (err) {
    const msg = err instanceof Error ? err.message : 'internal server error'
    return NextResponse.json({ error: msg }, { status: 500 })
  }
}