import fs from 'fs'
import path from 'path'
import pool from './appDb'

const CONFIG_PATH = path.join(process.cwd(), 'config.json')

export interface Site {
  id: string
  name: string
  url: string
  interval_min: number
}

export interface Database {
  id: string
  name: string
  host: string
  port: number
  database: string
  username: string
  password: string
  ssl: boolean
  color: string
}

export interface Service {
  id: string
  name: string
  url: string
  icon: string
  description: string
}

export interface Config {
  sites: Site[]
  databases: Database[]
  services: Service[]
}

export function generateId(): string {
  return `${Date.now()}-${Math.random().toString(36).slice(2, 7)}`
}

// Migration ve okuma bir arada
export async function readConfig(): Promise<Config> {
  // Migration kontrolü
  if (fs.existsSync(CONFIG_PATH)) {
    try {
      const raw = fs.readFileSync(CONFIG_PATH, 'utf-8')
      const oldConfig = JSON.parse(raw) as Config
      
      // Veritabanına aktar
      for (const site of oldConfig.sites || []) {
        await pool.query(`INSERT INTO config_sites (id, name, url, interval_min) VALUES ($1, $2, $3, $4) ON CONFLICT DO NOTHING`, [site.id, site.name, site.url, site.interval_min || 5])
      }
      for (const db of oldConfig.databases || []) {
        await pool.query(`INSERT INTO config_databases (id, name, host, port, database, username, password, ssl, color) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9) ON CONFLICT DO NOTHING`, [db.id, db.name, db.host, db.port, db.database, db.username, db.password, db.ssl || false, db.color])
      }
      for (const svc of oldConfig.services || []) {
        await pool.query(`INSERT INTO config_services (id, name, url, icon, description) VALUES ($1, $2, $3, $4, $5) ON CONFLICT DO NOTHING`, [svc.id, svc.name, svc.url, svc.icon, svc.description])
      }
      
      // Dosyanın uzantısını değiştirerek migration'ın bittiğini işaretle
      fs.renameSync(CONFIG_PATH, CONFIG_PATH + '.bak')
      console.log('[Migration] config.json verileri PostgreSQL tablolalarına aktarıldı ve dosya yedeklendi.')
    } catch (e) {
      console.error('[Migration] config.json veritabanına aktarılırken hata oluştu:', e)
    }
  }

  // DB'den oku
  const [sitesRes, dbsRes, svcsRes] = await Promise.all([
    pool.query(`SELECT * FROM config_sites`),
    pool.query(`SELECT * FROM config_databases`),
    pool.query(`SELECT * FROM config_services`),
  ])

  return {
    sites: sitesRes.rows as Site[],
    databases: dbsRes.rows as Database[],
    services: svcsRes.rows as Service[]
  }
}

export async function addConfigItem(type: 'site' | 'database' | 'service', item: any): Promise<any> {
  const newItem = { ...item, id: generateId() }
  if (type === 'site') {
    await pool.query(`INSERT INTO config_sites (id, name, url, interval_min) VALUES ($1, $2, $3, $4)`, [newItem.id, newItem.name, newItem.url, newItem.interval_min || 5])
  } else if (type === 'database') {
    await pool.query(`INSERT INTO config_databases (id, name, host, port, database, username, password, ssl, color) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)`, [newItem.id, newItem.name, newItem.host, newItem.port, newItem.database, newItem.username, newItem.password, newItem.ssl || false, newItem.color])
  } else if (type === 'service') {
    await pool.query(`INSERT INTO config_services (id, name, url, icon, description) VALUES ($1, $2, $3, $4, $5)`, [newItem.id, newItem.name, newItem.url, newItem.icon, newItem.description])
  }
  return newItem
}

export async function updateConfigItem(type: 'site' | 'database' | 'service', id: string, item: any): Promise<void> {
  if (type === 'site') {
    await pool.query(`UPDATE config_sites SET name=$1, url=$2, interval_min=$3 WHERE id=$4`, [item.name, item.url, item.interval_min || 5, id])
  } else if (type === 'database') {
    await pool.query(`UPDATE config_databases SET name=$1, host=$2, port=$3, database=$4, username=$5, password=$6, ssl=$7, color=$8 WHERE id=$9`, [item.name, item.host, item.port, item.database, item.username, item.password, item.ssl || false, item.color, id])
  } else if (type === 'service') {
    await pool.query(`UPDATE config_services SET name=$1, url=$2, icon=$3, description=$4 WHERE id=$5`, [item.name, item.url, item.icon, item.description, id])
  }
}

export async function deleteConfigItem(type: 'site' | 'database' | 'service', id: string): Promise<void> {
  if (type === 'site') await pool.query(`DELETE FROM config_sites WHERE id=$1`, [id])
  else if (type === 'database') await pool.query(`DELETE FROM config_databases WHERE id=$1`, [id])
  else if (type === 'service') await pool.query(`DELETE FROM config_services WHERE id=$1`, [id])
}