<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\SupportTicket;
use App\Models\User;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

final class SupportTicketController extends Controller
{
    public function index(Request $request)
    {
        $tickets = SupportTicket::query()
            ->with('assignee')
            ->when($request->filled('status'), fn ($q) => $q->where('status', $request->string('status')))
            ->latest()
            ->paginate(50)
            ->withQueryString();

        return view('admin.support.index', compact('tickets'));
    }

    public function show(SupportTicket $ticket)
    {
        $ticket->load(['user', 'assignee']);
        if (auth()->user()) {
            auth()->user()->unreadNotifications()->get()
                ->filter(fn ($notification) => (int) ($notification->data['support_ticket_id'] ?? 0) === $ticket->id)
                ->each->markAsRead();
        }

        return view('admin.support.show', [
            'ticket' => $ticket,
            'admins' => User::query()->where('is_admin', true)->orderBy('name')->get(['id', 'name', 'email']),
        ]);
    }

    public function update(Request $request, SupportTicket $ticket): RedirectResponse
    {
        $data = $request->validate([
            'status' => ['required', 'in:new,open,waiting,resolved,closed'],
            'priority' => ['required', 'in:low,normal,high,urgent'],
            'assigned_to' => ['nullable', 'integer', 'exists:users,id'],
        ]);

        if ($data['assigned_to'] ?? null) {
            abort_unless(User::whereKey($data['assigned_to'])->where('is_admin', true)->exists(), 422);
        }

        $data['resolved_at'] = in_array($data['status'], ['resolved', 'closed'], true)
            ? ($ticket->resolved_at ?? now())
            : null;
        $ticket->update($data);

        return back()->with('status', 'Support ticket updated.');
    }
}