import { createLogger } from '@sim/logger'
import { type NextRequest, NextResponse } from 'next/server'
import { z } from 'zod'
import { checkInternalAuth } from '@/lib/auth/hybrid'
import { generateId } from '@/lib/core/utils/uuid'
import { createPostgresConnection, executeInsert } from '@/app/api/tools/postgresql/utils'

const logger = createLogger('PostgreSQLInsertAPI')

const InsertSchema = z.object({
  host: z.string().min(1, 'Host is required'),
  port: z.coerce.number().int().positive('Port must be a positive integer'),
  database: z.string().min(1, 'Database name is required'),
  username: z.string().min(1, 'Username is required'),
  password: z.string().min(1, 'Password is required'),
  ssl: z.enum(['disabled', 'required', 'preferred']).default('preferred'),
  table: z.string().min(1, 'Table name is required'),
  data: z.union([
    z
      .record(z.unknown())
      .refine((obj) => Object.keys(obj).length > 0, 'Data object cannot be empty'),
    z
      .string()
      .min(1)
      .transform((str) => {
        try {
          const parsed = JSON.parse(str)
          if (typeof parsed !== 'object' || parsed === null || Array.isArray(parsed)) {
            throw new Error('Data must be a JSON object')
          }
          return parsed
        } catch (e) {
          const errorMsg = e instanceof Error ? e.message : 'Unknown error'
          throw new Error(
            `Invalid JSON format in data field: ${errorMsg}. Received: ${str.substring(0, 100)}...`
          )
        }
      }),
  ]),
})

export async function POST(request: NextRequest) {
  const requestId = generateId().slice(0, 8)

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

    const body = await request.json()

    const params = InsertSchema.parse(body)

    logger.info(
      `[${requestId}] Inserting data into ${params.table} on ${params.host}:${params.port}/${params.database}`
    )

    const sql = await createPostgresConnection({
      host: params.host,
      port: params.port,
      database: params.database,
      username: params.username,
      password: params.password,
      ssl: params.ssl,
    })

    try {
      const result = await executeInsert(sql, params.table, params.data)

      logger.info(`[${requestId}] Insert executed successfully, ${result.rowCount} row(s) inserted`)

      return NextResponse.json({
        message: `Data inserted successfully. ${result.rowCount} row(s) affected.`,
        rows: result.rows,
        rowCount: result.rowCount,
      })
    } finally {
      await sql.end()
    }
  } catch (error) {
    if (error instanceof z.ZodError) {
      logger.warn(`[${requestId}] Invalid request data`, { errors: error.errors })
      return NextResponse.json(
        { error: 'Invalid request data', details: error.errors },
        { status: 400 }
      )
    }

    const errorMessage = error instanceof Error ? error.message : 'Unknown error occurred'
    logger.error(`[${requestId}] PostgreSQL insert failed:`, error)

    return NextResponse.json(
      { error: `PostgreSQL insert failed: ${errorMessage}` },
      { status: 500 }
    )
  }
}
