<?php

namespace App\Console\Commands;

use App\Models\SortingHistory;
use App\Models\SortingSession;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Log;
use PhpMqtt\Client\MqttClient;
use PhpMqtt\Client\ConnectionSettings;

class MqttSubscriberCommand extends Command
{
    /**
     * The name and signature of the console command.
     */
    protected $signature = 'mqtt:subscribe';

    /**
     * The console command description.
     */
    protected $description = 'Subscribe ke MQTT broker (HiveMQ) dan simpan data sensor ke MongoDB';

    /**
     * Execute the console command.
     */
    public function handle(): int
    {
        $host     = config('services.mqtt.host');
        $port     = (int) config('services.mqtt.port', 8883);
        $username = config('services.mqtt.username');
        $password = config('services.mqtt.password');
        $topic    = config('services.mqtt.topic', 'fruit/sorting/data');
        $clientId = config('services.mqtt.client_id', 'laravel-subscriber-' . uniqid());

        $verifyTls = (bool) env('MQTT_TLS_VERIFY', false);

        if (empty($host) || empty($username) || empty($password)) {
            $this->error('❌ MQTT belum dikonfigurasi. Isi MQTT_HOST, MQTT_USERNAME, MQTT_PASSWORD di .env');
            return self::FAILURE;
        }

        $this->info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
        $this->info("🔌 MQTT Subscriber — FruitDashboard");
        $this->info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
        $this->info("   Broker  : {$host}:{$port}");
        $this->info("   Topic   : {$topic}");
        $this->info("   Client  : {$clientId}");
        $this->info("   TLS Ver.: " . ($verifyTls ? 'Enabled' : 'Bypassed (Local Dev)'));
        $this->info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
        $this->info("");

        // Setup settings
        $connectionSettings = (new ConnectionSettings())
            ->setUsername($username)
            ->setPassword($password)
            ->setUseTls(true)
            ->setTlsVerifyPeer($verifyTls)
            ->setTlsVerifyPeerName($verifyTls)
            ->setTlsSelfSignedAllowed(true)
            ->setKeepAliveInterval(60)
            ->setConnectTimeout(10);

        $this->info("📡 Memulai listener MQTT. Tekan Ctrl+C untuk berhenti.");
        $this->info("");

        while (true) {
            try {
                $mqtt = new MqttClient($host, $port, $clientId);

                $this->info("⏳ Menghubungkan ke HiveMQ...");
                $mqtt->connect($connectionSettings, true);
                $this->info("✅ Terhubung ke HiveMQ!");

                Log::info("MQTT Subscriber terhubung ke {$host}:{$port}");

                // Subscribe ke topic
                $mqtt->subscribe($topic, function (string $topic, string $message) {
                    $this->processMessage($topic, $message);
                }, 1);

                $this->info("📡 Mendengarkan pesan di topic: {$topic}");
                $this->info("");

                // Loop terus mendengarkan pesan
                $mqtt->loop(true);

                // Disconnect jika keluar loop secara normal
                $mqtt->disconnect();
                break;

            } catch (\Exception $e) {
                $this->error("⚠️ Koneksi terputus atau gagal: " . $e->getMessage());
                Log::error("MQTT connection error, reconnecting in 5s: " . $e->getMessage());
                $this->warn("⏳ Menghubungkan kembali dalam 5 detik...");
                $this->info("");
                sleep(5);
            }
        }

        return self::SUCCESS;
    }

    /**
     * Proses pesan yang diterima dari MQTT broker.
     *
     * Format JSON yang diharapkan dari ESP32/Arduino:
     * {
     *     "raw_banana_weight": 1.50,
     *     "ripe_banana_weight": 0.80,
     *     "raw_orange_weight": 2.00,
     *     "ripe_orange_weight": 1.20
     * }
     */
    protected function processMessage(string $topic, string $message): void
    {
        $timestamp = now()->format('H:i:s');
        $this->line("[{$timestamp}] 📨 Pesan diterima dari topic: {$topic}");

        try {
            $data = json_decode($message, true);

            if (json_last_error() !== JSON_ERROR_NONE) {
                $this->warn("   ⚠️  Format JSON tidak valid: {$message}");
                Log::warning("MQTT: Pesan JSON tidak valid", ['raw' => $message]);
                return;
            }

            $this->line("   📦 Data: " . json_encode($data));

            // Validasi field yang diperlukan
            $required = ['raw_banana_weight', 'ripe_banana_weight', 'raw_orange_weight', 'ripe_orange_weight'];
            foreach ($required as $field) {
                if (!isset($data[$field]) || !is_numeric($data[$field])) {
                    $this->warn("   ⚠️  Field '{$field}' tidak valid atau tidak ada.");
                    Log::warning("MQTT: Field {$field} missing/invalid", $data);
                    return;
                }
            }

            // Cek apakah ada sesi sortir yang aktif
            $session = SortingSession::active()->first();
            if (!$session) {
                $this->warn("   ⏸️  Tidak ada sesi sortir aktif. Data diabaikan.");
                $this->warn("      Tekan 'Mulai Sortir' di dashboard terlebih dahulu.");
                Log::info("MQTT: Data diterima tapi tidak ada sesi aktif, diabaikan.");
                return;
            }

            // 1. Abaikan data jika semua berat adalah 0 (tidak ada buah di timbangan)
            $hasWeight = (float) $data['raw_banana_weight'] > 0 ||
                          (float) $data['ripe_banana_weight'] > 0 ||
                          (float) $data['raw_orange_weight'] > 0 ||
                          (float) $data['ripe_orange_weight'] > 0;

            if (!$hasWeight) {
                $this->line("   ℹ️  Data kosong (semua berat 0), dilewati.");
                return;
            }

            // 2. Cegah duplikasi data untuk buah yang sama dalam rentang waktu singkat (< 3 detik)
            $lastRecord = SortingHistory::where('session_id', (string) $session->_id)
                ->latest('classification_date')
                ->first();

            if ($lastRecord) {
                $timeDiff = now()->diffInSeconds($lastRecord->classification_date);
                if ($timeDiff < 3) {
                    $isDuplicate = abs((float)$lastRecord->raw_banana_weight - (float)$data['raw_banana_weight']) < 0.1 &&
                                   abs((float)$lastRecord->ripe_banana_weight - (float)$data['ripe_banana_weight']) < 0.1 &&
                                   abs((float)$lastRecord->raw_orange_weight - (float)$data['raw_orange_weight']) < 0.1 &&
                                   abs((float)$lastRecord->ripe_orange_weight - (float)$data['ripe_orange_weight']) < 0.1;

                    if ($isDuplicate) {
                        $this->line("   ℹ️  Data duplikat untuk buah yang sama dalam waktu < 3 detik, dilewati.");
                        return;
                    }
                }
            }

            // Simpan ke MongoDB
            $record = SortingHistory::create([
                'session_id'          => (string) $session->_id,
                'classification_date' => now(),
                'raw_banana_weight'   => (float) $data['raw_banana_weight'],
                'ripe_banana_weight'  => (float) $data['ripe_banana_weight'],
                'raw_orange_weight'   => (float) $data['raw_orange_weight'],
                'ripe_orange_weight'  => (float) $data['ripe_orange_weight'],
            ]);

            $this->info("   ✅ Tersimpan ke MongoDB (ID: {$record->_id})");
            $this->info("      🍌 Pisang: mentah={$data['raw_banana_weight']}gram, matang={$data['ripe_banana_weight']}gram");
            $this->info("      🍊 Jeruk:  mentah={$data['raw_orange_weight']}gram, matang={$data['ripe_orange_weight']}gram");
            $this->info("      📂 Sesi: {$session->_id}");
            $this->info("");

            Log::info("MQTT: Data tersimpan", [
                'record_id'  => (string) $record->_id,
                'session_id' => (string) $session->_id,
                'data'       => $data,
            ]);

        } catch (\Exception $e) {
            $this->error("   ❌ Gagal menyimpan data: " . $e->getMessage());
            Log::error("MQTT: Gagal simpan data", [
                'error'   => $e->getMessage(),
                'message' => $message,
            ]);
        }
    }
}