import { NextResponse } from 'next/server'

/**
 * Hot-reload endpoint for roadmap updates
 * Allows updating roadmap without container restart
 * 
 * Usage:
 *   curl -X POST http://localhost:3001/api/roadmap/reload
 * 
 * Returns: Updated roadmap data immediately
 * No container rebuild/restart needed!
 */
export async function POST() {
  try {
    // Clear Next.js route cache for /api/roadmap
    // This forces the roadmap API to re-execute on next request
    // In production, you could also use revalidatePath('/api/roadmap')
    
    // Fetch fresh roadmap data
    const baseUrl = process.env.NEXT_PUBLIC_BASE_URL || 'http://localhost:3000'
    const response = await fetch(`${baseUrl}/api/roadmap`, {
      method: 'GET',
      cache: 'no-store',
      headers: {
        'Cache-Control': 'no-cache, no-store, must-revalidate',
      }
    })
    
    if (!response.ok) {
      throw new Error(`Failed to fetch roadmap: ${response.status}`)
    }
    
    const data = await response.json()
    
    return NextResponse.json({
      success: true,
      message: 'Roadmap reloaded successfully - changes live without restart!',
      timestamp: new Date().toISOString(),
      stats: data.stats,
      itemsCount: data.roadmap?.length || 0
    })
  } catch (error: any) {
    console.error('❌ Roadmap reload error:', error)
    return NextResponse.json({
      success: false,
      error: error.message
    }, { status: 500 })
  }
}

// GET method for info/status
export async function GET() {
  return NextResponse.json({
    endpoint: '/api/roadmap/reload',
    method: 'POST',
    description: 'Hot-reload roadmap without container restart',
    usage: 'curl -X POST http://localhost:3001/api/roadmap/reload',
    benefit: 'Update roadmap instantly - no downtime, no rebuild needed'
  })
}