<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\SupportTicket;
use App\Models\ChatMessage;
use App\Events\NewChatMessage;

class AdminChatController extends Controller
{
    /**
     * Page 1: List all active user chats
     */
    public function index()
{
    $tickets = SupportTicket::with('user')
        ->withCount([
            'messages as unread_count' => function ($q) {
                $q->where('sender_type', \App\Models\User::class)
                  ->where('read_by_admin', false);
            }
        ])
        ->orderBy('updated_at', 'desc')
        ->get();

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


    /**
     * Page 2: Open chat window for a specific user
     */
    public function openChat($ticketId)
{
    $ticket = SupportTicket::with('user')->findOrFail($ticketId);

    // ✅ MARK USER MESSAGES AS READ FOR ADMIN
    ChatMessage::where('ticket_id', $ticketId)
        ->where('sender_type', \App\Models\User::class)
        ->where('read_by_admin', false)
        ->update(['read_by_admin' => true]);

    $messages = ChatMessage::where('ticket_id', $ticketId)
        ->orderBy('created_at', 'asc')
        ->with('sender')
        ->get();

    return view('admin.chat_window', compact('ticket', 'messages'));
}


    /**
     * Admin sends a message to the user
     */
    public function sendMessage(Request $request, $ticketId)
    {
        $request->validate([
            'message' => 'nullable|string',
            'file'    => 'nullable|file|max:20480', // 20 MB
        ]);

        $ticket = SupportTicket::findOrFail($ticketId);
        $admin  = auth('admin')->user();

        $data = [
            'ticket_id'   => $ticketId,
            'sender_id'   => $admin->id,
            'sender_type' => \App\Models\Admin::class,
            'message'     => $request->message,

            'read_by_admin' => true,
            'read_by_user'  => false,
        ];

        // File Upload
        if ($request->hasFile('file')) {
            $path = $request->file('file')->store('chat', 'public');
            $data['file_path'] = $path;
            $data['file_type'] = $request->file('file')->getMimeType();
        }

        // Save message
        $message = ChatMessage::create($data);
        $message->load('sender');

                \Log::info("DEBUG: ChatController sendMessage called", [
            'ticket_id' => $ticketId,
            'payload' => $request->all()
        ]);

        // Broadcast real-time
        broadcast(new NewChatMessage($message));

        \Log::info("DEBUG: ChatController sendMessage called 79", [
            'ticket_id' => $ticketId,
            'payload' => $request->all()
        ]);
        return response()->json([
            'success' => true,
            'message' => $message
        ]);
    }
}