import { NextRequest, NextResponse } from "next/server";
import { getServerSession } from "next-auth/next";
import { authOptions } from "@/app/api/auth/[...nextauth]/route";
import { prisma } from "@/lib/prisma";

// GET - Retrieve a specific announcement
export async function GET(
  req: NextRequest,
  { params }: { params: { id: string } }
) {
  try {
    const session = await getServerSession(authOptions);
    
    if (!session) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }

    const { id } = params;
    
    // Find announcement by ID
    const announcement = await prisma.announcement.findUnique({
      where: { id },
      include: {
        author: {
          select: {
            id: true,
            email: true
          }
        }
      }
    });
    
    if (!announcement) {
      return NextResponse.json({ error: "Announcement not found" }, { status: 404 });
    }
    
    // Check if user has access to this announcement
    const userRole = session.user.role || [];
    const roles = Array.isArray(userRole) ? userRole : [userRole];
    
    const hasAccess = 
      announcement.targetRoles.includes("all") || 
      announcement.targetRoles.some(role => roles.includes(role));
    
    if (!hasAccess) {
      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
    }
    
    return NextResponse.json(announcement);
  } catch (error) {
    console.error("Error fetching announcement:", error);
    return NextResponse.json({ error: "Failed to fetch announcement" }, { status: 500 });
  }
}

// DELETE - Remove an announcement
export async function DELETE(
  req: NextRequest,
  { params }: { params: { id: string } }
) {
  try {
    const session = await getServerSession(authOptions);
    
    if (!session) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }
    
    // Check if user has admin, entrepreneurship, or communication role
    const userRole = session.user.role || [];
    const roles = Array.isArray(userRole) ? userRole : [userRole];
    const hasAdminAccess = roles.some(role => 
      ["admin", "entrepreneurship", "communication"].includes(role)
    );
    
    if (!hasAdminAccess) {
      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
    }
    
    const { id } = params;
    
    // Check if announcement exists
    const announcement = await prisma.announcement.findUnique({
      where: { id }
    });
    
    if (!announcement) {
      return NextResponse.json({ error: "Announcement not found" }, { status: 404 });
    }
    
    // Delete the announcement
    await prisma.announcement.delete({
      where: { id }
    });
    
    return NextResponse.json({ message: "Announcement deleted successfully" });
  } catch (error) {
    console.error("Error deleting announcement:", error);
    return NextResponse.json({ error: "Failed to delete announcement" }, { status: 500 });
  }
}