import { createLogger } from '@sim/logger'
import { getErrorMessage } from '@sim/utils/errors'
import { generateId } from '@sim/utils/id'
import { type NextRequest, NextResponse } from 'next/server'
import { mongodbInsertContract } from '@/lib/api/contracts/tools/databases/mongodb'
import { parseToolRequest } from '@/lib/api/server'
import { checkInternalAuth } from '@/lib/auth/hybrid'
import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
import { createMongoDBConnection, sanitizeCollectionName } from '@/app/api/tools/mongodb/utils'

const logger = createLogger('MongoDBInsertAPI')

export const POST = withRouteHandler(async (request: NextRequest) => {
  const requestId = generateId().slice(0, 8)
  let client = null

  const auth = await checkInternalAuth(request)
  if (!auth.success || !auth.userId) {
    logger.warn(`[${requestId}] Unauthorized MongoDB insert attempt`)
    return NextResponse.json({ error: auth.error || 'Unauthorized' }, { status: 401 })
  }

  try {
    const parsed = await parseToolRequest(mongodbInsertContract, request, { logger })
    if (!parsed.success) return parsed.response
    const params = parsed.data.body

    logger.info(
      `[${requestId}] Inserting ${params.documents.length} document(s) into ${params.host}:${params.port}/${params.database}.${params.collection}`
    )

    const sanitizedCollection = sanitizeCollectionName(params.collection)
    client = await createMongoDBConnection({
      host: params.host,
      port: params.port,
      database: params.database,
      username: params.username,
      password: params.password,
      authSource: params.authSource,
      ssl: params.ssl,
    })

    const db = client.db(params.database)
    const coll = db.collection(sanitizedCollection)

    let result
    if (params.documents.length === 1) {
      result = await coll.insertOne(params.documents[0] as Record<string, unknown>)
      logger.info(`[${requestId}] Single document inserted successfully`)
      return NextResponse.json({
        message: 'Document inserted successfully',
        insertedId: result.insertedId.toString(),
        documentCount: 1,
      })
    }
    result = await coll.insertMany(params.documents as Record<string, unknown>[])
    const insertedCount = Object.keys(result.insertedIds).length
    logger.info(`[${requestId}] ${insertedCount} documents inserted successfully`)
    return NextResponse.json({
      message: `${insertedCount} documents inserted successfully`,
      insertedIds: Object.values(result.insertedIds).map((id) => id.toString()),
      documentCount: insertedCount,
    })
  } catch (error) {
    const errorMessage = getErrorMessage(error, 'Unknown error occurred')
    logger.error(`[${requestId}] MongoDB insert failed:`, error)

    return NextResponse.json({ error: `MongoDB insert failed: ${errorMessage}` }, { status: 500 })
  } finally {
    if (client) {
      await client.close()
    }
  }
})