<?php

namespace App\Http\Controllers\User;

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

class ChatController extends Controller
{
    /**
     * Start chat or return existing ticket for this user
     */
    public function startChat()
    {
        // One chat ticket per user
        $ticket = SupportTicket::firstOrCreate([
            'user_id' => auth()->id(),
        ]);

        return response()->json([
            'success' => true,
            'ticket'  => $ticket
        ]);
    }

    /**
     * Load all messages for this ticket
     */
    public function getMessages($ticketId)
    {
        // Ensure this ticket belongs to the logged-in user
        $ticket = SupportTicket::where('id', $ticketId)
            ->where('user_id', auth()->id())
            ->firstOrFail();

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

        return response()->json([
            'success'  => true,
            'messages' => $messages
        ]);
    }

    /**
     * Send text or file message from user → admin/staff
     */
    public function sendMessage(Request $request, $ticketId)
    {
        $request->validate([
            'message' => 'nullable|string',
            'file'    => 'nullable|file|max:20480', // 20MB limit
        ]);

        // Validate ticket ownership
        $ticket = SupportTicket::where('id', $ticketId)
            ->where('user_id', auth()->id())
            ->firstOrFail();

        $data = [
            'ticket_id'   => $ticketId,
            'sender_id'   => auth()->id(),
            'sender_type' => \App\Models\User::class,
            'message'     => $request->message,
             'client_id'   => $request->client_id, // ✅ ADD
            'read_by_admin' => false,
            'read_by_user'  => true,
        ];

        // Handle 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);

        // Load sender info for broadcast
        $message->load('sender');

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

        return response()->json([
            'success' => true,
            'message' => $message
        ]);
    }
}