import type { NextApiRequest, NextApiResponse } from 'next'
import sqlite3 from 'sqlite3'
import path from 'path'

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse
) {
  if (req.method !== 'GET') {
    return res.status(405).json({ error: 'Method not allowed' })
  }

  const { status = 'pending', page = '1', limit = '20' } = req.query

  const dbPath = path.join(process.cwd(), 'database', 'antihoax.db')
  const db = new sqlite3.Database(dbPath)

  try {
    const reports = await new Promise<any[]>((resolve, reject) => {
      const offset = (parseInt(page as string) - 1) * parseInt(limit as string)
      
      db.all(
        `SELECT *, 
                CASE 
                  WHEN category_suggestions IS NOT NULL 
                  THEN json_extract(category_suggestions, '$')
                  ELSE '[]'
                END as category_suggestions
         FROM reports 
         WHERE status = ? 
         ORDER BY created_at DESC 
         LIMIT ? OFFSET ?`,
        [status, parseInt(limit as string), offset],
        (err, rows: any[]) => {
          if (err) reject(err)
          else {
            const processedRows = rows.map(row => ({
              ...row,
              category_suggestions: row.category_suggestions ? JSON.parse(row.category_suggestions) : []
            }))
            resolve(processedRows)
          }
        }
      )
    })

    return res.status(200).json(reports)

  } catch (error) {
    console.error('Database error:', error)
    return res.status(500).json({ error: 'Internal server error' })
  } finally {
    db.close()
  }
}