import { NextRequest, NextResponse } from 'next/server'
import pool from '@/lib/appDb'
import { generateId } from '@/lib/config'
import { reloadBackupCrons } from '@/lib/cronWorker'
import { requireAuth } from '@/lib/auth'

// GET configs and logs for a dbId
export async function GET(req: NextRequest) {
  const err = await requireAuth(req)
  if (err) return err

  const { searchParams } = new URL(req.url)
  const dbId = searchParams.get('dbId')
  if (!dbId) return NextResponse.json({ error: 'Missing dbId' }, { status: 400 })

  try {
    const configRes = await pool.query(`SELECT * FROM backup_configs WHERE db_id = $1 LIMIT 1`, [dbId])
    const logsRes = await pool.query(`SELECT * FROM backup_logs WHERE db_id = $1 ORDER BY ts DESC LIMIT 50`, [dbId])
    
    return NextResponse.json({
      config: configRes.rows[0] || null,
      logs: logsRes.rows.map(r => ({ ...r, file_size: Number(r.file_size), ts: Number(r.ts) }))
    })
  } catch (e: any) {
    return NextResponse.json({ error: e.message }, { status: 500 })
  }
}

// Create or update a backup config
export async function POST(req: NextRequest) {
  const err = await requireAuth(req)
  if (err) return err

  try {
    const body = await req.json()
    const { db_id, schedule, connection_id, cloud_type, credentials, gdrive_folder_id } = body

    if (!db_id || !schedule) {
      return NextResponse.json({ error: 'db_id ve schedule zorunlu' }, { status: 400 })
    }
    // connection_id VEYA credentials zorunlu
    if (!connection_id && !credentials) {
      return NextResponse.json({ error: 'connection_id veya credentials gerekli' }, { status: 400 })
    }

    const existing = await pool.query(`SELECT id FROM backup_configs WHERE db_id = $1`, [db_id])

    if (existing.rows.length > 0) {
      await pool.query(
        `UPDATE backup_configs SET schedule=$1, cloud_type=$2, credentials=$3, gdrive_folder_id=$4, connection_id=$5 WHERE db_id=$6`,
        [schedule, cloud_type || '', credentials || '', gdrive_folder_id || null, connection_id || null, db_id]
      )
    } else {
      await pool.query(
        `INSERT INTO backup_configs (id, db_id, schedule, cloud_type, credentials, gdrive_folder_id, connection_id) VALUES ($1, $2, $3, $4, $5, $6, $7)`,
        [generateId(), db_id, schedule, cloud_type || '', credentials || '', gdrive_folder_id || null, connection_id || null]
      )
    }

    // Reload crons in memory
    await reloadBackupCrons()

    return NextResponse.json({ ok: true })
  } catch (e: any) {
    return NextResponse.json({ error: e.message }, { status: 500 })
  }
}

// Delete backup config
export async function DELETE(req: NextRequest) {
  const err = await requireAuth(req)
  if (err) return err

  try {
    const body = await req.json()
    const { db_id } = body
    if (!db_id) return NextResponse.json({ error: 'Missing dbId' }, { status: 400 })

    await pool.query(`DELETE FROM backup_configs WHERE db_id = $1`, [db_id])
    await reloadBackupCrons()

    return NextResponse.json({ ok: true })
  } catch (e: any) {
    return NextResponse.json({ error: e.message }, { status: 500 })
  }
}