<?php

namespace App\Console\Commands;

use App\Services\Ollama\OllamaService;
use App\Services\Qdrant\QdrantService;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;

/**
 * php artisan kb:health-check
 *
 * Semak status semua perkhidmatan yang diperlukan.
 */
class HealthCheckCommand extends Command
{
    protected $signature = 'kb:health-check';
    protected $description = 'Semak status Ollama, Qdrant, dan MySQL';

    public function handle(OllamaService $ollama, QdrantService $qdrant): int
    {
        $this->info('════════════════════════════════════════');
        $this->info('  PEMERIKSAAN KESIHATAN SISTEM');
        $this->info('════════════════════════════════════════');

        $allOk = true;

        // ── MySQL ─────────────────────────────────────────────────────────
        $this->line('');
        $this->info('📦 MySQL');
        try {
            DB::connection()->getPdo();
            $dbName = DB::getDatabaseName();
            $this->line("   ✅ Berjaya sambung ke: {$dbName}");
        } catch (\Exception $e) {
            $this->error("   ❌ Tidak dapat sambung: {$e->getMessage()}");
            $allOk = false;
        }

        // ── Ollama ────────────────────────────────────────────────────────
        $this->line('');
        $this->info('🤖 Ollama');
        $ollamaStatus = $ollama->healthCheck();

        if ($ollamaStatus['online']) {
            $this->line("   ✅ Online");
            $chatOk  = $ollamaStatus['chat_model']  ? '✅' : '❌';
            $embedOk = $ollamaStatus['embed_model'] ? '✅' : '❌';
            $this->line("   {$chatOk} Model Chat:    " . config('ollama.chat_model'));
            $this->line("   {$embedOk} Model Embed:   " . config('ollama.embedding_model'));

            if (!$ollamaStatus['chat_model'] || !$ollamaStatus['embed_model']) {
                $allOk = false;
            }
        } else {
            $this->error("   ❌ Offline");
            if ($ollamaStatus['error']) {
                $this->line("      " . $ollamaStatus['error']);
            }
            $allOk = false;
        }

        // ── Qdrant ────────────────────────────────────────────────────────
        $this->line('');
        $this->info('🗄️  Qdrant');
        $qdrantStatus = $qdrant->healthCheck();

        if ($qdrantStatus['online']) {
            $this->line("   ✅ Online");
            $collOk = $qdrantStatus['collection_exists'] ? '✅' : '⚠️ ';
            $this->line("   {$collOk} Collection:    " . config('qdrant.collection'));
            if ($qdrantStatus['collection_exists']) {
                $this->line("   📊 Vectors:      " . number_format($qdrantStatus['points_count'] ?? 0));
            } else {
                $this->warn("      Collection belum wujud. Akan dibuat secara automatik semasa pertama embed.");
            }
        } else {
            $this->error("   ❌ Offline");
            if ($qdrantStatus['error']) {
                $this->line("      " . $qdrantStatus['error']);
            }
            $allOk = false;
        }

        // ── Queue ─────────────────────────────────────────────────────────
        $this->line('');
        $this->info('⏳ Queue');
        $driver = config('queue.default');
        $this->line("   ℹ️  Driver: {$driver}");
        if ($driver === 'sync') {
            $this->warn("   ⚠️  Queue driver adalah 'sync' — job akan dijalankan secara synchronous.");
            $this->warn("      Tukar kepada 'database' atau 'redis' untuk production.");
        } else {
            $this->line("   ✅ Driver konfigurasi untuk async.");
        }

        // ── Ringkasan ─────────────────────────────────────────────────────
        $this->line('');
        $this->info('════════════════════════════════════════');
        if ($allOk) {
            $this->info('  ✅ SEMUA PERKHIDMATAN OK');
        } else {
            $this->error('  ❌ ADA PERKHIDMATAN YANG BERMASALAH');
        }
        $this->info('════════════════════════════════════════');

        return $allOk ? self::SUCCESS : self::FAILURE;
    }
}