import { NextResponse } from 'next/server'
import { withRouteContext } from '@/lib/api/with-route-context'
import { getBestInvoiceMatch } from '@/lib/invoices/invoice-matching'
import type { Transaction } from '@/types'

/**
 * POST /api/transactions/batch-match-invoices
 * Run invoice matching for all uncategorized income transactions without potential_invoice_id
 */
export const POST = withRouteContext(
  'transaction.batch_match_invoices',
  async (_request, { supabase, companyId }) => {
    // Fetch uncategorized income transactions without a potential match
    const { data: transactions, error: txError } = await supabase
      .from('transactions')
      .select('*')
      .eq('company_id', companyId)
      .is('is_business', null)
      .gt('amount', 0)
      .is('potential_invoice_id', null)
      .is('invoice_id', null)
      .order('date', { ascending: false })
      .limit(50)

    if (txError || !transactions) {
      return NextResponse.json({ error: 'Failed to fetch transactions' }, { status: 500 })
    }

    let matched = 0
    const matchedInvoiceIds = new Set<string>()

    for (const tx of transactions) {
      try {
        const bestMatch = await getBestInvoiceMatch(
          supabase,
          companyId,
          tx as Transaction,
          0.50
        )

        if (bestMatch && !matchedInvoiceIds.has(bestMatch.invoice.id)) {
          await supabase
            .from('transactions')
            .update({ potential_invoice_id: bestMatch.invoice.id })
            .eq('id', tx.id)

          matchedInvoiceIds.add(bestMatch.invoice.id)
          matched++
        }
      } catch {
        // Continue with other transactions
      }
    }

    return NextResponse.json({
      processed: transactions.length,
      matched,
    })
  },
  { requireWrite: true },
)