<?php

declare(strict_types=1);

/**
 * Script to check database structure
 * Usage: php bin/check_database.php
 */

require __DIR__ . '/../vendor/autoload.php';

use App\Config\AppConfig;
use App\Support\Database;

// Load environment variables
AppConfig::loadEnv(__DIR__ . '/..');

// Get database connection
$dbHost = AppConfig::get('DB_HOST', 'localhost');
$dbName = AppConfig::get('DB_NAME', '');
$dbUser = AppConfig::get('DB_USER', '');
$dbPass = AppConfig::get('DB_PASS', '');

if (empty($dbName) || empty($dbUser)) {
    echo "Error: Database credentials not configured in .env\n";
    exit(1);
}

try {
    $db = Database::getConnection($dbHost, $dbName, $dbUser, $dbPass);
    
    echo "=== Database Structure Check ===\n\n";
    
    // Check tariffs table structure
    echo "1. Checking tariffs table structure:\n";
    $stmt = $db->query("DESCRIBE tariffs");
    $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    if (empty($columns)) {
        echo "   ❌ Table 'tariffs' does not exist!\n";
    } else {
        echo "   ✅ Table 'tariffs' exists with columns:\n";
        foreach ($columns as $col) {
            echo "      - {$col['Field']} ({$col['Type']})\n";
        }
    }
    
    echo "\n2. Checking locations table structure:\n";
    $stmt = $db->query("DESCRIBE locations");
    $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    if (empty($columns)) {
        echo "   ❌ Table 'locations' does not exist!\n";
    } else {
        echo "   ✅ Table 'locations' exists with columns:\n";
        foreach ($columns as $col) {
            echo "      - {$col['Field']} ({$col['Type']})\n";
        }
    }
    
    echo "\n3. Checking gates table structure:\n";
    $stmt = $db->query("DESCRIBE gates");
    $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    if (empty($columns)) {
        echo "   ❌ Table 'gates' does not exist!\n";
    } else {
        echo "   ✅ Table 'gates' exists with columns:\n";
        foreach ($columns as $col) {
            echo "      - {$col['Field']} ({$col['Type']})\n";
        }
    }
    
    echo "\n4. Checking entry_events table structure:\n";
    $stmt = $db->query("DESCRIBE entry_events");
    $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    if (empty($columns)) {
        echo "   ❌ Table 'entry_events' does not exist!\n";
    } else {
        echo "   ✅ Table 'entry_events' exists with columns:\n";
        foreach ($columns as $col) {
            echo "      - {$col['Field']} ({$col['Type']})\n";
        }
    }
    
    echo "\n5. Testing query (similar to DailySummaryService):\n";
    $testSql = "
        SELECT 
            DATE(e.event_time) as summary_date,
            e.location_code,
            e.gate_code,
            e.category,
            COUNT(*) as total_count,
            COALESCE(t.amount, 0) as tariff_amount
        FROM entry_events e
        INNER JOIN locations l ON e.location_code = l.code AND l.is_active = 1
        INNER JOIN gates g ON e.location_code = g.location_code 
            AND e.gate_code = g.gate_code 
            AND g.is_active = 1
        LEFT JOIN tariffs t ON e.location_code = t.location_code
            AND e.gate_code = t.gate_code
            AND e.category = t.category
        WHERE DATE(e.event_time) = CURDATE()
        GROUP BY 
            DATE(e.event_time),
            e.location_code,
            e.gate_code,
            e.category,
            COALESCE(t.amount, 0)
        LIMIT 1
    ";
    
    try {
        $stmt = $db->query($testSql);
        $result = $stmt->fetch(PDO::FETCH_ASSOC);
        echo "   ✅ Query executed successfully!\n";
        if ($result) {
            echo "   Sample result: " . json_encode($result, JSON_PRETTY_PRINT) . "\n";
        } else {
            echo "   No data found for today.\n";
        }
    } catch (PDOException $e) {
        echo "   ❌ Query failed: " . $e->getMessage() . "\n";
    }
    
    echo "\n=== Check Complete ===\n";
    
} catch (PDOException $e) {
    echo "Database Error: " . $e->getMessage() . "\n";
    exit(1);
}