import { NextRequest, NextResponse } from 'next/server';
import { prisma } from '@/lib/prisma';
import { apiCache } from '@/lib/cache';

export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id: idParam } = await params;
    const id = parseInt(idParam);
    
    const project = await prisma.project.findUnique({
      where: { id }
    });

    if (!project) {
      return NextResponse.json(
        { error: 'Project not found' },
        { status: 404 }
      );
    }

    return NextResponse.json(project);
  } catch (error) {
    console.error('Error fetching project:', error);
    return NextResponse.json(
      { error: 'Failed to fetch project' },
      { status: 500 }
    );
  }
}

export async function PUT(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    // Check if this is an admin request
    const isAdminRequest = request.headers.get('x-admin-request') === 'true';
    if (!isAdminRequest) {
      return NextResponse.json(
        { error: 'Admin access required' },
        { status: 403 }
      );
    }

    const { id: idParam } = await params;
    const id = parseInt(idParam);
    const data = await request.json();
    
    // Remove difficulty field if it exists (since we're removing it)
    const { difficulty, ...projectData } = data;
    
    const project = await prisma.project.update({
      where: { id },
      data: { 
        ...projectData, 
        updatedAt: new Date(),
        // Keep existing difficulty if not provided
        ...(difficulty ? { difficulty } : {})
      }
    });

    // Invalidate cache after successful update
    await apiCache.invalidateProject(id);
    await apiCache.invalidateAll();

    return NextResponse.json(project);
  } catch (error) {
    console.error('Error updating project:', error);
    return NextResponse.json(
      { error: 'Failed to update project', details: error instanceof Error ? error.message : 'Unknown error' },
      { status: 500 }
    );
  }
}

export async function DELETE(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id: idParam } = await params;
    const id = parseInt(idParam);
    
    await prisma.project.delete({
      where: { id }
    });

    // Invalidate cache after successful deletion
    await apiCache.invalidateProject(id);
    await apiCache.invalidateAll();

    return NextResponse.json({ success: true });
  } catch (error) {
    console.error('Error deleting project:', error);
    return NextResponse.json(
      { error: 'Failed to delete project' },
      { status: 500 }
    );
  }
}