<?php

/**
 * Plugin Name: Adventi – Lead Generator Advent Calendar
 * Description: Create a beautiful WordPress Advent Calendar with this plugin and: collect leads, add custom backgrounds, themes, extra form fields, download your leads and more.
 * Version: 1.0.0
 * Author: Adventi
 * Author URI: https://shopadventi.com
 * License: GPL-2.0+
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: adventi
 * Domain Path: /languages
 * Requires at least: 5.5
 * Tested up to: 6.9
 */

if (! defined('ABSPATH')) {
	exit; // Exit if accessed directly.
}

define('ADVENTI_VERSION', '1.0.0');
define('ADVENTI_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('ADVENTI_PLUGIN_URL', plugin_dir_url(__FILE__));

/**
 * Load admin/public files.
 * Admin code is loaded only in admin area.
 */
if (is_admin()) {
	require_once ADVENTI_PLUGIN_DIR . 'admin/leads-page.php';
	require_once ADVENTI_PLUGIN_DIR . 'admin/settings-page.php';
	require_once ADVENTI_PLUGIN_DIR . 'admin/adventi-dashboard-page.php';
}

// Frontend overlays (public-facing code).
require_once ADVENTI_PLUGIN_DIR . 'public/render-overlay.php';

/**
 * Enqueue frontend assets.
 */
function adventi_enqueue_assets()
{
	if (is_admin()) {
		return;
	}

	wp_enqueue_style(
		'adventi-google-fonts',
		'https://fonts.googleapis.com/css2?family=Abril+Fatface&family=Google+Sans+Flex:opsz,wght@6..144,1..1000&family=Lobster&family=Playwrite+CZ:wght@100..400&display=swap',
		array(),
		null
	);

	wp_enqueue_style(
		'adventi-style',
		ADVENTI_PLUGIN_URL . 'assets/css/style.css',
		array(),
		ADVENTI_VERSION
	);

	wp_enqueue_script(
		'adventi-main',
		ADVENTI_PLUGIN_URL . 'assets/js/main.js',
		array('jquery'),
		microtime(),
		true
	);


	// AJAX endpoint for JS.
	wp_localize_script(
		'adventi-main',
		'adventi_ajax',
		array(
			'url' => admin_url('admin-ajax.php'),
		)
	);

	// Gifts & settings.
	wp_localize_script(
		'adventi-main',
		'adventi_gifts',
		array(
			'items' => get_option('adventi_gifts_settings', array()),
		)
	);

	wp_localize_script(
		'adventi-main',
		'adventi_ajax',
		array(
			'ajax_url' => admin_url('admin-ajax.php'),
			'nonce'    => wp_create_nonce('adventi_save_lead'),
		)
	);
}
add_action('wp_enqueue_scripts', 'adventi_enqueue_assets');

/**
 * Admin styles / scripts.
 */
function adventi_admin_enqueue_assets()
{

	// Admin CSS
	wp_enqueue_style(
		'adventi-admin',
		ADVENTI_PLUGIN_URL . 'assets/css/admin.css',
		array(),
		ADVENTI_VERSION
	);

	// Admin JS
	wp_enqueue_script(
		'adventi-admin-js',
		ADVENTI_PLUGIN_URL . 'assets/js/admin.js',
		array('jquery'),
		ADVENTI_VERSION,
		true
	);
}
add_action('admin_enqueue_scripts', 'adventi_admin_enqueue_assets');

/**
 * Add dynamic CSS variables based on selected palette.
 */
function adventi_add_dynamic_css()
{
	if (is_admin()) {
		return;
	}

	$palette = sanitize_text_field(get_option('adventi_color_scheme', 'classic'));
	$vars    = '';

	if ('classic' === $palette) {
		$vars = '
			--adventi-primary:#690700;
			--adventi-secondary:#125b23;
			--adventi-tertiary:#ffffff;
		';
	} elseif ('snow_blue' === $palette) {
		$vars = '
			--adventi-primary:#7acbe8;
			--adventi-secondary:#2b3d7e;
			--adventi-tertiary:#8fa2c3;
		';
	} elseif ('cozy_xmas' === $palette) {
		$vars = '
			--adventi-primary:#70241e;
			--adventi-secondary:#885944;
			--adventi-tertiary:#e2b386;
		';
	}

	if (! empty($vars)) {
		wp_add_inline_style('adventi-style', ':root{' . $vars . '}');
	}
}
add_action('wp_enqueue_scripts', 'adventi_add_dynamic_css', 20);

/**
 * Admin menu.
 */
function adventi_admin_menu()
{

	add_menu_page(
		__('Adventi', 'adventi'),
		__('Adventi', 'adventi'),
		'manage_options',
		'adventi-dashboard',
		'adventi_dashboard_page',
		'dashicons-gift',
		56
	);

	add_submenu_page(
		'adventi-dashboard',
		__('Dashboard', 'adventi'),
		__('Dashboard', 'adventi'),
		'manage_options',
		'adventi-dashboard',
		'adventi_dashboard_page'
	);

	add_submenu_page(
		'adventi-dashboard',
		__('Leads', 'adventi'),
		__('Leads', 'adventi'),
		'manage_options',
		'adventi-leads',
		'adventi_leads_page'
	);

	add_submenu_page(
		'adventi-dashboard',
		__('Settings', 'adventi'),
		__('Settings', 'adventi'),
		'manage_options',
		'adventi-settings',
		'adventi_settings_page'
	);
}
add_action('admin_menu', 'adventi_admin_menu');

/**
 * Plugin activation: create leads table.
 */
function adventi_install()
{
	global $wpdb;

	$table_name      = $wpdb->prefix . 'adventi_leads';
	$charset_collate = $wpdb->get_charset_collate();
	$sql = "CREATE TABLE {$table_name} (
		id mediumint(9) NOT NULL AUTO_INCREMENT,
		name varchar(200) NOT NULL,
		email varchar(200) NOT NULL,
		date datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,
		PRIMARY KEY  (id)
	) {$charset_collate};";

	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
	dbDelta($sql);
}
register_activation_hook(__FILE__, 'adventi_install');

/**
 * AJAX: save lead.
 */
function adventi_save_lead()
{

	global $wpdb;

	$table = $wpdb->prefix . 'adventi_leads';

	// ---- NAME ----
	$name_raw = isset($_POST['name']) ? wp_unslash($_POST['name']) : '';
	$name     = preg_replace('/[^a-zA-ZÀ-ÿ\s\-]/u', '', $name_raw);

	if (empty($name)) {
		wp_send_json_error(__('Name is required.', 'adventi'));
	}

	// ---- EMAIL ----
	$email_raw = isset($_POST['email']) ? wp_unslash($_POST['email']) : '';
	$email     = sanitize_email($email_raw);

	if (empty($email) || ! is_email($email)) {
		wp_send_json_error(__('A valid email is required.', 'adventi'));
	}

	// ---- INSERT INTO DB ----
	$wpdb->insert(
		$table,
		array(
			'name'       => $name,
			'email'      => $email,
		),
		array('%s', '%s')
	);

	wp_send_json_success(__('Lead saved.', 'adventi'));
}
add_action('wp_ajax_adventi_save_lead', 'adventi_save_lead');
add_action('wp_ajax_nopriv_adventi_save_lead', 'adventi_save_lead');


/* PASS FRONTEND DATA TO main.js
----------------------------------------------------------*/
add_action('wp_enqueue_scripts', 'adventi_pass_data_to_frontend');
function adventi_pass_data_to_frontend()
{

	if (! is_singular()) return;

	// Load gifts
	$gifts = get_option('adventi_gifts_settings', array());
	$formatted = array();

	// Reformat gifts for JS
	foreach ($gifts as $day => $gift) {
		$formatted[$day] = array(
			'title'       => $gift['title'] ?? '',
			'description' => $gift['description'] ?? '',
			'code'        => $gift['code'] ?? '',
			'url'         => $gift['url'] ?? '',
		);
	}

	wp_localize_script(
		'adventi-main',
		'adventi_settings',
		array(
			'start_date' => get_option('adventi_start_date', ''),
		)
	);

	wp_localize_script(
		'adventi-main',
		'adventi_gifts',
		array(
			'items' => $formatted,
		)
	);

	wp_localize_script(
		'adventi-main',
		'adventi_strings',
		array(
			'day_prefix'     => get_option('adventi_day_prefix', 'Day'),
			'future_text'    => get_option('adventi_future_msg', 'Come back on day'),
			'tomorrow_message'  => get_option('adventi_tomorrow_message', 'Come back tomorrow for a new surprise!'),
			'download_text'  => get_option('adventi_download_text', 'Check your link'),
		)
	);
	
}
/**
 * Shortcode handler: [adventi]
 */
function adventi_shortcode_handler()
{
	// Return ONLY a placeholder in the page content.
	return '<div id="adventi-root"></div>';
}
add_shortcode('adventi', 'adventi_shortcode_handler');