<?php
// Enable error reporting for debugging
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Include database configuration
require_once __DIR__ . '/../../config.php';

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Function to check if table exists
function table_exists($conn, $table) {
    $result = $conn->query("SHOW TABLES LIKE '$table'");
    return $result && $result->num_rows > 0;
}

// Get the structure of the site_settings table
$site_settings_structure = [];
if (table_exists($conn, 'site_settings')) {
    $result = $conn->query("DESCRIBE site_settings");
    while ($row = $result->fetch_assoc()) {
        $site_settings_structure[$row['Field']] = $row;
    }
    echo "site_settings table already exists.<br>";
} else {
    // Create site_settings table
    $create_table_sql = "CREATE TABLE site_settings (
        id INT AUTO_INCREMENT PRIMARY KEY,
        setting_key VARCHAR(100) NOT NULL,
        setting_value TEXT,
        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
        updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        UNIQUE KEY (setting_key)
    )";
    
    if ($conn->query($create_table_sql)) {
        echo "Created site_settings table successfully.<br>";
        
        // Refresh the structure
        $result = $conn->query("DESCRIBE site_settings");
        while ($row = $result->fetch_assoc()) {
            $site_settings_structure[$row['Field']] = $row;
        }
    } else {
        echo "Error creating site_settings table: " . $conn->error . "<br>";
    }
}

// Check if setting_description column exists
if (!isset($site_settings_structure['setting_description'])) {
    $add_column_sql = "ALTER TABLE site_settings ADD COLUMN setting_description TEXT AFTER setting_value";
    if ($conn->query($add_column_sql)) {
        echo "Added setting_description column to site_settings table.<br>";
    } else {
        echo "Error adding setting_description column: " . $conn->error . "<br>";
    }
}

// Function to check if setting exists
function setting_exists($conn, $key) {
    $query = "SELECT id FROM site_settings WHERE setting_key = ?";
    $stmt = $conn->prepare($query);
    $stmt->bind_param("s", $key);
    $stmt->execute();
    $result = $stmt->get_result();
    return $result && $result->num_rows > 0;
}

// Add certificate_secret_key setting if it doesn't exist
if (!setting_exists($conn, 'certificate_secret_key')) {
    // Generate a secure random key
    $secret_key = bin2hex(random_bytes(32));
    
    // Check if setting_description exists in the table
    if (isset($site_settings_structure['setting_description'])) {
        $insert_query = "INSERT INTO site_settings (setting_key, setting_value, setting_description) 
                         VALUES ('certificate_secret_key', ?, 'Secret key used for certificate validation')";
        $stmt = $conn->prepare($insert_query);
        $stmt->bind_param("s", $secret_key);
    } else {
        $insert_query = "INSERT INTO site_settings (setting_key, setting_value) 
                         VALUES ('certificate_secret_key', ?)";
        $stmt = $conn->prepare($insert_query);
        $stmt->bind_param("s", $secret_key);
    }
    
    if ($stmt->execute()) {
        echo "Added certificate_secret_key setting successfully.<br>";
    } else {
        echo "Error adding certificate_secret_key setting: " . $stmt->error . "<br>";
    }
} else {
    echo "certificate_secret_key setting already exists.<br>";
}

// Add other common site settings if they don't exist
$default_settings = [
    ['site_name', 'Popular Computer Institute', 'Name of the institute'],
    ['site_logo', '../assets/img/logo.png', 'Path to the institute logo'],
    ['site_address', 'Bhimpura No.1, Ballia, UP', 'Physical address of the institute'],
    ['site_email', '[email protected]', 'Contact email for the institute'],
    ['site_phone', '+91 9876543210', 'Contact phone number for the institute'],
    ['director_name', 'Institute Director', 'Name of the institute director']
];

foreach ($default_settings as $setting) {
    if (!setting_exists($conn, $setting[0])) {
        // Check if setting_description exists in the table
        if (isset($site_settings_structure['setting_description'])) {
            $insert_query = "INSERT INTO site_settings (setting_key, setting_value, setting_description) VALUES (?, ?, ?)";
            $stmt = $conn->prepare($insert_query);
            $stmt->bind_param("sss", $setting[0], $setting[1], $setting[2]);
        } else {
            $insert_query = "INSERT INTO site_settings (setting_key, setting_value) VALUES (?, ?)";
            $stmt = $conn->prepare($insert_query);
            $stmt->bind_param("ss", $setting[0], $setting[1]);
        }
        
        if ($stmt->execute()) {
            echo "Added {$setting[0]} setting successfully.<br>";
        } else {
            echo "Error adding {$setting[0]} setting: " . $stmt->error . "<br>";
        }
    } else {
        echo "{$setting[0]} setting already exists.<br>";
    }
}

echo "<br>Site settings setup completed!<br>";

// Close the connection
$conn->close();
?>