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import { NextRequest, NextResponse } from 'next/server'
import db from '@/db/db'
import { revisions, issueStages } from '@/db/schema/vendorDocu'
import { eq, sql } from 'drizzle-orm'
import { alias } from 'drizzle-orm/pg-core'
import { debugLog, debugError, debugSuccess } from '@/lib/debug-utils'
export async function GET(request: NextRequest) {
try {
const { searchParams } = new URL(request.url)
const documentId = searchParams.get('documentId')
debugLog('1. Input documentId:', documentId)
if (!documentId) {
debugLog('2. documentId is missing, returning 400')
return NextResponse.json(
{ error: 'documentId is required' },
{ status: 400 }
)
}
const parsedDocumentId = parseInt(documentId)
debugLog('3. Parsed documentId:', parsedDocumentId)
// 해당 document의 모든 issueStages와 연결된 revisions에서 최대 serialNo 조회
const r = alias(revisions, 'r')
const is = alias(issueStages, 'is')
debugLog('4. Created aliases - r:', r, 'is:', is)
const maxSerialResult = await db
.select({
maxSerial: sql<number>`
COALESCE(MAX(CAST(${r.serialNo} AS INTEGER)), 0)
`,
maxRegisterSerial: sql<number>`
COALESCE(MAX(CAST(${r.registerSerialNoMax} AS INTEGER)), 0)
`
})
.from(r)
.innerJoin(
is,
eq(r.issueStageId, is.id)
)
.where(eq(is.documentId, parsedDocumentId))
debugLog('5. Query result:', maxSerialResult)
debugLog('6. Query result length:', maxSerialResult.length)
debugLog('7. First result item:', maxSerialResult[0])
const maxSerialValue = maxSerialResult[0]?.maxSerial || 0
const maxRegisterSerialValue = maxSerialResult[0]?.maxRegisterSerial || 0
debugLog('8. maxSerial value:', maxSerialValue)
debugLog('9. maxRegisterSerial value:', maxRegisterSerialValue)
const maxSerialNo = Math.max(maxSerialValue, maxRegisterSerialValue)
debugSuccess('10. Final maxSerialNo:', maxSerialNo)
debugSuccess('11. Next serialNo:', maxSerialNo + 1)
return NextResponse.json({
maxSerialNo,
nextSerialNo: maxSerialNo + 1,
documentId: documentId,
debug: {
parsedDocumentId,
queryResult: maxSerialResult,
maxSerialValue,
maxRegisterSerialValue
}
})
} catch (error) {
debugError('Error fetching max serial no:', error)
debugError('Error stack:', error?.stack)
return NextResponse.json(
{ error: 'Failed to fetch max serial number', details: error?.message },
{ status: 500 }
)
}
}
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