<?php

namespace App\Http\Controllers;

use App\Models\Site;
use App\Models\TcpPort;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class TcpPortController extends Controller
{
    /**
     * Display overview of all TCP ports across all sites
     */
    public function overview()
    {
        $sites = Site::where('user_id', Auth::id())
            ->withCount('tcpPorts')
            ->with(['tcpPorts' => function ($query) {
                $query->where('is_active', true)->limit(5);
            }])
            ->get();

        $stats = [
            'total_sites' => $sites->count(),
            'total_ports_monitored' => $sites->sum('tcp_ports_count'),
            'sites_with_ports' => $sites->where('tcp_ports_count', '>', 0)->count(),
        ];

        return view('tcp-ports.overview', compact('sites', 'stats'));
    }

    /**
     * Display a listing of the resource.
     */
    public function index(Request $request, Site $site)
    {
        // Ensure the site belongs to the authenticated user
        if ($site->user_id !== Auth::id()) {
            abort(403);
        }

        $tcpPorts = $site->tcpPorts()
            ->orderBy('port')
            ->paginate(20);

        return view('tcp-ports.index', compact('site', 'tcpPorts'));
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create(Site $site)
    {
        // Ensure the site belongs to the authenticated user
        if ($site->user_id !== Auth::id()) {
            abort(403);
        }

        $commonPorts = TcpPort::getCommonPorts();

        return view('tcp-ports.create', compact('site', 'commonPorts'));
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request, Site $site)
    {
        // Ensure the site belongs to the authenticated user
        if ($site->user_id !== Auth::id()) {
            abort(403);
        }

        $validated = $request->validate([
            'port' => ['required', 'integer', 'min:1', 'max:65535'],
            'name' => ['nullable', 'string', 'max:255'],
            'is_active' => ['boolean'],
        ]);

        // Check if port already exists for this site
        $exists = $site->tcpPorts()
            ->where('port', $validated['port'])
            ->exists();

        if ($exists) {
            return back()
                ->withInput()
                ->withErrors(['port' => 'This port is already being monitored for this site.']);
        }

        $site->tcpPorts()->create([
            'port' => $validated['port'],
            'name' => $validated['name'] ?? null,
            'is_active' => $validated['is_active'] ?? true,
        ]);

        return redirect()
            ->route('tcp-ports.index', $site)
            ->with('success', 'TCP port added successfully.');
    }

    /**
     * Display the specified resource.
     */
    public function show(Site $site, TcpPort $tcpPort)
    {
        // Ensure the port belongs to the site and user
        if ($tcpPort->site_id !== $site->id || $site->user_id !== Auth::id()) {
            abort(403);
        }

        return view('tcp-ports.show', compact('site', 'tcpPort'));
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(Site $site, TcpPort $tcpPort)
    {
        // Ensure the port belongs to the site and user
        if ($tcpPort->site_id !== $site->id || $site->user_id !== Auth::id()) {
            abort(403);
        }

        $commonPorts = TcpPort::getCommonPorts();

        return view('tcp-ports.edit', compact('site', 'tcpPort', 'commonPorts'));
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(Request $request, Site $site, TcpPort $tcpPort)
    {
        // Ensure the port belongs to the site and user
        if ($tcpPort->site_id !== $site->id || $site->user_id !== Auth::id()) {
            abort(403);
        }

        $validated = $request->validate([
            'port' => ['required', 'integer', 'min:1', 'max:65535'],
            'name' => ['nullable', 'string', 'max:255'],
            'is_active' => ['boolean'],
        ]);

        // Check if port already exists for this site (excluding current)
        $exists = $site->tcpPorts()
            ->where('port', $validated['port'])
            ->where('id', '!=', $tcpPort->id)
            ->exists();

        if ($exists) {
            return back()
                ->withInput()
                ->withErrors(['port' => 'This port is already being monitored for this site.']);
        }

        $tcpPort->update([
            'port' => $validated['port'],
            'name' => $validated['name'] ?? null,
            'is_active' => $validated['is_active'] ?? $tcpPort->is_active,
        ]);

        return redirect()
            ->route('tcp-ports.index', $site)
            ->with('success', 'TCP port updated successfully.');
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Site $site, TcpPort $tcpPort)
    {
        // Ensure the port belongs to the site and user
        if ($tcpPort->site_id !== $site->id || $site->user_id !== Auth::id()) {
            abort(403);
        }

        $tcpPort->delete();

        return redirect()
            ->route('tcp-ports.index', $site)
            ->with('success', 'TCP port deleted successfully.');
    }
}