<?php
/**
 * Admin menu, dashboard and shared helpers.
 *
 * @package LoyaltySpin
 */

namespace LoyaltyPress\Admin;

use LoyaltyPress\Settings;
use LoyaltyPress\Coins\Ledger;

defined( 'ABSPATH' ) || exit;

/**
 * Admin bootstrap.
 */
class Admin {

	const CAP = 'manage_woocommerce';

	/**
	 * Hooks.
	 */
	public static function init() {
		add_action( 'admin_menu', array( __CLASS__, 'menu' ) );
		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'assets' ), 20 );
		add_action( 'admin_notices', array( __CLASS__, 'notices' ) );
		add_filter( 'plugin_action_links_' . plugin_basename( LOYALTYPRESS_FILE ), array( __CLASS__, 'action_links' ) );
		Settings_Page::init();
		if ( Settings::module_on( 'spin' ) ) {
			Prizes_Page::init();
		}
		if ( Settings::module_on( 'draw' ) ) {
			Draws_Page::init();
		}
		Customers_Page::init();
		Product_Fields::init();
		Tools_Page::init();
	}

	/**
	 * Menus.
	 */
	public static function menu() {
		add_menu_page( __( 'LoyaltySpin', 'loyaltyspin' ), __( 'LoyaltySpin', 'loyaltyspin' ), self::CAP, 'loyaltypress', array( __CLASS__, 'dashboard' ), 'dashicons-awards', 56 );
		add_submenu_page( 'loyaltypress', __( 'Dashboard', 'loyaltyspin' ), __( 'Dashboard', 'loyaltyspin' ), self::CAP, 'loyaltypress', array( __CLASS__, 'dashboard' ) );
		add_submenu_page( 'loyaltypress', __( 'Settings', 'loyaltyspin' ), __( 'Settings', 'loyaltyspin' ), self::CAP, 'loyaltypress-settings', array( Settings_Page::class, 'render' ) );
		if ( Settings::module_on( 'spin' ) ) {
			add_submenu_page( 'loyaltypress', __( 'Spin Wheel', 'loyaltyspin' ), __( 'Spin Wheel', 'loyaltyspin' ), self::CAP, 'loyaltypress-spin', array( Prizes_Page::class, 'render' ) );
		}
		if ( Settings::module_on( 'draw' ) ) {
			add_submenu_page( 'loyaltypress', __( 'Lucky Draws', 'loyaltyspin' ), __( 'Lucky Draws', 'loyaltyspin' ), self::CAP, 'loyaltypress-draws', array( Draws_Page::class, 'render' ) );
		}
		add_submenu_page( 'loyaltypress', __( 'Customers', 'loyaltyspin' ), __( 'Customers', 'loyaltyspin' ), self::CAP, 'loyaltypress-customers', array( Customers_Page::class, 'render' ) );
		add_submenu_page( 'loyaltypress', __( 'Tools & Logs', 'loyaltyspin' ), __( 'Tools & Logs', 'loyaltyspin' ), self::CAP, 'loyaltypress-tools', array( Tools_Page::class, 'render' ) );
	}

	/**
	 * Admin CSS on our screens only.
	 *
	 * @param string $hook Hook suffix.
	 */
	public static function assets( $hook ) {
		if ( false === strpos( (string) $hook, 'loyaltypress' ) ) {
			return;
		}
		wp_enqueue_style( 'loyaltypress-admin', LOYALTYPRESS_URL . 'assets/css/admin.css', array(), LOYALTYPRESS_VERSION );
		wp_enqueue_script( 'loyaltypress-admin', LOYALTYPRESS_URL . 'assets/js/admin.js', array( 'jquery' ), LOYALTYPRESS_VERSION, true );
		wp_localize_script(
			'loyaltypress-admin',
			'LoyaltyPressAdmin',
			array(
				'ajax' => admin_url( 'admin-ajax.php' ),
				'i18n' => array(
					'saving'  => __( 'Creating…', 'loyaltyspin' ),
					'created' => __( 'Created. Set the cart amount and click Save changes.', 'loyaltyspin' ),
					'error'   => __( 'Something went wrong. Please try again.', 'loyaltyspin' ),
					'pick'    => __( 'Choose gift image', 'loyaltyspin' ),
					'use'     => __( 'Use this image', 'loyaltyspin' ),
					'running' => __( 'Simulating…', 'loyaltyspin' ),
				),
			)
		);
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$tab = isset( $_GET['tab'] ) ? sanitize_key( wp_unslash( $_GET['tab'] ) ) : '';
		if ( false !== strpos( (string) $hook, 'loyaltypress-settings' ) && in_array( $tab, array( 'spin', 'coins' ), true ) ) {
			wp_enqueue_media();
		}
		if ( false !== strpos( (string) $hook, 'loyaltypress-settings' ) && 'gifts' === $tab ) {
			wp_enqueue_script( 'wc-enhanced-select' );
			wp_enqueue_style( 'woocommerce_admin_styles' );
			wp_enqueue_media();
		}
		if ( false !== strpos( (string) $hook, 'loyaltypress-spin' ) ) {
			\LoyaltyPress\Frontend\My_Account::register_assets();
			wp_enqueue_script( 'loyaltypress-front' );
			wp_enqueue_style( 'loyaltypress-front' );
			wp_enqueue_media();
		}
	}

	/**
	 * Flash notices (set via redirect ?loyaltypress_msg=).
	 */
	public static function notices() {
		// phpcs:disable WordPress.Security.NonceVerification.Recommended -- display only.
		if ( empty( $_GET['page'] ) || 0 !== strpos( sanitize_key( wp_unslash( $_GET['page'] ) ), 'loyaltypress' ) || empty( $_GET['loyaltypress_msg'] ) ) {
			return;
		}
		$msg  = sanitize_text_field( rawurldecode( sanitize_text_field( wp_unslash( $_GET['loyaltypress_msg'] ) ) ) );
		$type = ! empty( $_GET['loyaltypress_err'] ) ? 'error' : 'success';
		// phpcs:enable
		echo '<div class="notice notice-' . esc_attr( $type ) . ' is-dismissible"><p>' . esc_html( $msg ) . '</p></div>';
	}

	/**
	 * Settings (and, in the free edition, Get Pro) links on the Plugins screen.
	 *
	 * @param array $links Links.
	 * @return array
	 */
	public static function action_links( $links ) {
		$extra = array( '<a href="' . esc_url( admin_url( 'admin.php?page=loyaltypress-settings' ) ) . '">' . esc_html__( 'Settings', 'loyaltyspin' ) . '</a>' );
		if ( ! Settings::has_pro_code() ) {
			$extra[] = '<a href="' . esc_url( \LoyaltyPress\Licensing\Licensing::upgrade_url() ) . '" target="_blank" rel="noopener noreferrer" style="font-weight:600">' . esc_html__( 'Get Pro', 'loyaltyspin' ) . '</a>';
		}
		return array_merge( $extra, $links );
	}

	/**
	 * Free edition: what Pro adds, with a link to buy it. Shown only on LoyaltySpin's own dashboard.
	 */
	private static function pro_card() {
		if ( Settings::has_pro_code() ) {
			return;
		}
		?>
		<div class="lp-panel lp-pro-card">
			<div>
				<h2><?php esc_html_e( 'Bring customers back with LoyaltySpin Pro', 'loyaltyspin' ); ?></h2>
				<p class="description"><?php esc_html_e( 'Pro adds a Spin & Win prize wheel with popups, verifiable Lucky Draws, gifts on purchase and region controls. Your coins, tiers and customers carry over.', 'loyaltyspin' ); ?></p>
			</div>
			<a class="button button-primary" href="<?php echo esc_url( \LoyaltyPress\Licensing\Licensing::upgrade_url() ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Get LoyaltySpin Pro', 'loyaltyspin' ); ?></a>
		</div>
		<?php
	}

	/**
	 * Redirect back with a message.
	 *
	 * @param string $url   URL.
	 * @param string $msg   Message.
	 * @param bool   $error Error.
	 */
	public static function back( $url, $msg, $error = false ) {
		$args = array( 'loyaltypress_msg' => rawurlencode( $msg ) );
		if ( $error ) {
			$args['loyaltypress_err'] = 1;
		}
		wp_safe_redirect( add_query_arg( $args, $url ) );
		exit;
	}

	/**
	 * Capability gate for every admin-post handler (each handler then verifies its nonce).
	 */
	public static function require_cap() {
		if ( ! current_user_can( self::CAP ) ) {
			wp_die( esc_html__( 'You do not have permission to do this.', 'loyaltyspin' ), 403 );
		}
	}

	/**
	 * Dashboard.
	 */
	public static function dashboard() {
		global $wpdb;
		$totals = Ledger::totals();
		$p      = $wpdb->prefix . 'loyaltypress_';
		// phpcs:disable WordPress.DB.DirectDatabaseQuery,WordPress.DB.PreparedSQL.InterpolatedNotPrepared
		$spins_used  = (int) $wpdb->get_var( $wpdb->prepare( 'SELECT COUNT(*) FROM %i', $p . 'spin_results' ) );
		$spins_open  = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM %i WHERE status = 'available'", $p . 'spin_tokens' ) );
		$draws_open  = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM %i WHERE status IN ('open','ready')", $p . 'draws' ) );
		$draws_ready = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM %i WHERE status = 'ready'", $p . 'draws' ) );
		$top         = $wpdb->get_results( $wpdb->prepare( 'SELECT t.user_id, t.balance_after FROM %i t INNER JOIN (SELECT MAX(id) mid FROM %i GROUP BY user_id) m ON m.mid = t.id ORDER BY t.balance_after DESC LIMIT 10', $p . 'coin_ledger', $p . 'coin_ledger' ) );
		$recent      = $wpdb->get_results( $wpdb->prepare( 'SELECT * FROM %i ORDER BY id DESC LIMIT 12', $p . 'coin_ledger' ) );
		$prize_mix   = $wpdb->get_results( $wpdb->prepare( 'SELECT prize_label, COUNT(*) c FROM %i GROUP BY prize_label ORDER BY c DESC LIMIT 8', $p . 'spin_results' ) );
		// phpcs:enable
		$liability = \LoyaltyPress\Coins\Redeem::value_of( max( 0, $totals['outstanding'] ) );
		?>
		<div class="wrap lp-admin">
			<h1><?php esc_html_e( 'LoyaltySpin', 'loyaltyspin' ); ?></h1>
			<?php if ( $draws_ready && Settings::module_on( 'draw' ) ) : ?>
				<div class="notice notice-warning inline"><p>
				<?php
				/* translators: %d: count */
				echo esc_html( sprintf( _n( '%d lucky draw has reached its target and is waiting to be run.', '%d lucky draws have reached their target and are waiting to be run.', $draws_ready, 'loyaltyspin' ), $draws_ready ) );
				?>
				<a href="<?php echo esc_url( admin_url( 'admin.php?page=loyaltypress-draws' ) ); ?>"><?php esc_html_e( 'Open draws', 'loyaltyspin' ); ?></a></p></div>
			<?php endif; ?>
			<?php self::checklist(); ?>
			<?php self::pro_card(); ?>
			<?php self::performance(); ?>
			<h2 class="lp-subhead"><?php esc_html_e( 'Coins and rewards (all time)', 'loyaltyspin' ); ?></h2>
			<div class="lp-kpis">
				<?php
				self::kpi( __( 'Coins issued', 'loyaltyspin' ), number_format_i18n( $totals['issued'] ) );
				self::kpi( __( 'Coins redeemed', 'loyaltyspin' ), number_format_i18n( $totals['redeemed'] ) );
				self::kpi( __( 'Outstanding', 'loyaltyspin' ), number_format_i18n( $totals['outstanding'] ), wp_strip_all_tags( wc_price( $liability ) ) . ' ' . __( 'liability', 'loyaltyspin' ) );
				if ( Settings::module_on( 'spin' ) ) {
					self::kpi( __( 'Spins used', 'loyaltyspin' ), number_format_i18n( $spins_used ), number_format_i18n( $spins_open ) . ' ' . __( 'unused', 'loyaltyspin' ) );
				}
				if ( Settings::module_on( 'draw' ) ) {
					self::kpi( __( 'Active draws', 'loyaltyspin' ), number_format_i18n( $draws_open ) );
				}
				?>
			</div>
			<div class="lp-cols">
				<div class="lp-panel">
					<h2><?php esc_html_e( 'Top balances', 'loyaltyspin' ); ?></h2>
					<table class="widefat striped"><tbody>
					<?php foreach ( $top as $row ) : ?>
						<?php $u = get_userdata( $row->user_id ); ?>
						<tr><td><a href="<?php echo esc_url( admin_url( 'admin.php?page=loyaltypress-customers&user=' . (int) $row->user_id ) ); ?>"><?php echo esc_html( $u ? $u->display_name : '#' . $row->user_id ); ?></a></td><td class="num"><?php echo esc_html( number_format_i18n( $row->balance_after ) ); ?></td></tr>
					<?php endforeach; ?>
					<?php if ( ! $top ) : ?>
						<tr><td><?php esc_html_e( 'No activity yet.', 'loyaltyspin' ); ?></td></tr>
					<?php endif; ?>
					</tbody></table>
				</div>
				<div class="lp-panel">
					<h2><?php esc_html_e( 'Recent coin activity', 'loyaltyspin' ); ?></h2>
					<table class="widefat striped"><tbody>
					<?php foreach ( $recent as $row ) : ?>
						<?php $u = get_userdata( $row->user_id ); ?>
						<tr><td><?php echo esc_html( $u ? $u->display_name : '#' . $row->user_id ); ?></td><td><?php echo esc_html( $row->reason ); ?></td><td class="num <?php echo $row->amount > 0 ? 'pos' : 'neg'; ?>"><?php echo esc_html( ( $row->amount > 0 ? '+' : '' ) . $row->amount ); ?></td></tr>
					<?php endforeach; ?>
					</tbody></table>
				</div>
				<?php if ( $prize_mix && Settings::module_on( 'spin' ) ) : ?>
				<div class="lp-panel">
					<h2><?php esc_html_e( 'Spin outcomes', 'loyaltyspin' ); ?></h2>
					<table class="widefat striped"><tbody>
					<?php foreach ( $prize_mix as $row ) : ?>
						<tr><td><?php echo esc_html( $row->prize_label ); ?></td><td class="num"><?php echo esc_html( number_format_i18n( $row->c ) ); ?></td></tr>
					<?php endforeach; ?>
					</tbody></table>
				</div>
				<?php endif; ?>
			</div>
		</div>
		<?php
	}

	/**
	 * "How is the programme doing?" panel.
	 */
	private static function performance() {
		// phpcs:disable WordPress.Security.NonceVerification.Recommended -- read-only view options.
		$days = isset( $_GET['period'] ) ? absint( $_GET['period'] ) : 30;
		if ( isset( $_GET['loyaltypress_refresh'], $_GET['_wpnonce'] ) && wp_verify_nonce( sanitize_key( wp_unslash( $_GET['_wpnonce'] ) ), 'loyaltypress_refresh_stats' ) ) {
			Stats::flush();
		}
		// phpcs:enable
		$st   = Stats::get( $days );
		$base = admin_url( 'admin.php?page=loyaltypress' );
		$pct  = $st['customers'] > 0 ? round( $st['members'] / $st['customers'] * 100 ) : 0;
		?>
		<div class="lp-panel lp-performance">
			<div class="lp-performance__head">
				<h2><?php esc_html_e( 'How your loyalty programme is doing', 'loyaltyspin' ); ?><?php \LoyaltyPress\Html::out( Settings_Page::tip( __( 'Members are customers who have earned or used coins at least once. Sales from members count confirmed orders that earned coins in the period. Rewards given = value of coins used at checkout plus tier discounts.', 'loyaltyspin' ) ) ); ?></h2>
				<div class="lp-seg" role="group" aria-label="<?php esc_attr_e( 'Period', 'loyaltyspin' ); ?>">
					<?php foreach ( Stats::PERIODS as $d ) : ?>
						<a class="<?php echo (int) $st['days'] === $d ? 'is-active' : ''; ?>" href="<?php echo esc_url( add_query_arg( 'period', $d, $base ) ); ?>">
						<?php
						/* translators: %d: number of days */
						echo esc_html( sprintf( __( '%d days', 'loyaltyspin' ), $d ) );
						?>
						</a>
					<?php endforeach; ?>
				</div>
			</div>
			<div class="lp-kpis">
				<?php
				/* translators: 1: percent of customers who are members, 2: number of customers */
				self::kpi( __( 'Members', 'loyaltyspin' ), number_format_i18n( $st['members'] ), sprintf( __( '%1$s%% of %2$s customers', 'loyaltyspin' ), $pct, number_format_i18n( $st['customers'] ) ) );
				self::kpi( __( 'New members', 'loyaltyspin' ), number_format_i18n( $st['new_members'] ), __( 'joined in this period', 'loyaltyspin' ) );
				/* translators: %s: orders */
				self::kpi( __( 'Sales from members', 'loyaltyspin' ), html_entity_decode( wp_strip_all_tags( wc_price( $st['sales'] ) ), ENT_QUOTES, 'UTF-8' ), sprintf( _n( '%s order', '%s orders', $st['orders'], 'loyaltyspin' ), number_format_i18n( $st['orders'] ) ) );
				/* translators: %s: buyers */
				self::kpi( __( 'Repeat buyers', 'loyaltyspin' ), $st['repeat_rate'] . '%', sprintf( __( 'of %s members who ordered', 'loyaltyspin' ), number_format_i18n( $st['buyers'] ) ) );
				/* translators: %s: percent of sales */
				self::kpi( __( 'Rewards given', 'loyaltyspin' ), html_entity_decode( wp_strip_all_tags( wc_price( $st['cost'] ) ), ENT_QUOTES, 'UTF-8' ), sprintf( __( '%s%% of member sales', 'loyaltyspin' ), wc_format_localized_decimal( $st['cost_pct'] ) ) );
				if ( \LoyaltyPress\Settings::module_on( 'spin' ) ) {
					self::kpi( __( 'Spins played', 'loyaltyspin' ), number_format_i18n( $st['spins'] ), __( 'in this period', 'loyaltyspin' ) );
				}
				?>
			</div>
			<p class="description">
				<?php
				/* translators: %s: time ago */
				echo esc_html( sprintf( __( 'Updated %s ago.', 'loyaltyspin' ), human_time_diff( (int) $st['at'] ) ) );
				?>
				<a href="
				<?php
				echo esc_url(
					wp_nonce_url(
						add_query_arg(
							array(
								'period'               => $st['days'],
								'loyaltypress_refresh' => 1,
							),
							$base
						),
						'loyaltypress_refresh_stats'
					)
				);
				?>
							"><?php esc_html_e( 'Refresh', 'loyaltyspin' ); ?></a>
				· <a href="<?php echo esc_url( admin_url( 'admin.php?page=loyaltypress-customers' ) ); ?>"><?php esc_html_e( 'See all members', 'loyaltyspin' ); ?></a>
			</p>
		</div>
		<?php
	}

	/**
	 * Getting-started checklist. Each step ticks itself off from real data.
	 */
	private static function checklist() {
		global $wpdb;
		$raw   = (array) get_option( Settings::OPTION, array() );
		$audit = $wpdb->prefix . 'loyaltypress_audit_log';
		$led   = $wpdb->prefix . 'loyaltypress_coin_ledger';
		// phpcs:disable WordPress.DB.DirectDatabaseQuery,WordPress.DB.PreparedSQL.InterpolatedNotPrepared
		$saved_tabs   = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT object FROM %i WHERE action = 'settings_saved'", $audit ) );
		$prizes_saved = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT id FROM %i WHERE action = 'prizes_saved' LIMIT 1", $audit ) );
		$test_order   = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT id FROM %i WHERE type = 'earn' AND order_id > 0 LIMIT 1", $led ) );
		// phpcs:enable
		$jobs  = function_exists( 'as_next_scheduled_action' ) && as_next_scheduled_action( 'loyaltypress_hourly', array(), 'loyaltypress' );
		$steps = array();
		if ( Settings::module_on( 'coins' ) ) {
			$steps[] = array( in_array( 'tab:coins', $saved_tabs, true ), __( 'Name your coins and set the earn & redeem rates', 'loyaltyspin' ), __( 'Pick a name customers will love and decide how much cashback you give.', 'loyaltyspin' ), admin_url( 'admin.php?page=loyaltypress-settings&tab=coins' ) );
		}
		if ( Settings::module_on( 'tiers' ) ) {
			$steps[] = array( in_array( 'tab:tiers', $saved_tabs, true ), __( 'Set your membership tiers', 'loyaltyspin' ), __( 'Choose the spend levels and the % off each level gets.', 'loyaltyspin' ), admin_url( 'admin.php?page=loyaltypress-settings&tab=tiers' ) );
		}
		if ( Settings::module_on( 'gifts' ) ) {
			$steps[] = array( ! empty( $raw['gifts']['rules'] ), __( 'Add a gift rule (optional)', 'loyaltyspin' ), __( 'Give a free product when the cart reaches an amount.', 'loyaltyspin' ), admin_url( 'admin.php?page=loyaltypress-settings&tab=gifts' ) );
		}
		if ( Settings::module_on( 'spin' ) ) {
			$steps[] = array( $prizes_saved, __( 'Review the wheel prizes and test the odds', 'loyaltyspin' ), __( 'Edit the 6 sample prizes and press "Test the odds".', 'loyaltyspin' ), admin_url( 'admin.php?page=loyaltypress-spin' ) );
		}
		$steps[] = array( (bool) $jobs, __( 'Background jobs are scheduled', 'loyaltyspin' ), __( 'Needed for coin expiry, reminders, birthdays and draw checks. For exact timing, add a server cron for wp-cron.php.', 'loyaltyspin' ), admin_url( 'admin.php?page=loyaltypress-tools' ) );
		$steps[] = array( $test_order, __( 'Place a test order', 'loyaltyspin' ), __( 'Order as a customer (Cash on Delivery is fine), mark it Processing and check the My Rewards page.', 'loyaltyspin' ), wc_get_page_permalink( 'shop' ) );
		$done    = count( array_filter( wp_list_pluck( $steps, 0 ) ) );
		if ( count( $steps ) === $done ) {
			return;
		}
		?>
		<div class="lp-panel lp-getting-started">
			<h2><?php esc_html_e( 'Get started', 'loyaltyspin' ); ?> <span class="lp-sub"><?php echo esc_html( sprintf( /* translators: 1: done, 2: total */ __( '%1$d of %2$d done', 'loyaltyspin' ), $done, count( $steps ) ) ); ?></span></h2>
			<div class="lp-progress-mini"><span style="width:<?php echo esc_attr( round( $done / count( $steps ) * 100 ) ); ?>%"></span></div>
			<ol class="lp-checklist-steps">
				<?php foreach ( $steps as $n => $st ) : ?>
					<li class="<?php echo $st[0] ? 'is-done' : ''; ?>">
						<span class="lp-step-icon"><?php echo $st[0] ? '✓' : esc_html( $n + 1 ); ?></span>
						<span><a class="lp-step-title" href="<?php echo esc_url( $st[3] ); ?>"><?php echo esc_html( $st[1] ); ?></a><span class="lp-step-desc"><?php echo esc_html( $st[2] ); ?></span></span>
					</li>
				<?php endforeach; ?>
			</ol>
		</div>
		<?php
	}

	/**
	 * KPI tile.
	 *
	 * @param string $label Label.
	 * @param string $value Value.
	 * @param string $sub   Sub text.
	 */
	private static function kpi( $label, $value, $sub = '' ) {
		echo '<div class="lp-kpi"><span class="lp-kpi__label">' . esc_html( $label ) . '</span><span class="lp-kpi__value">' . esc_html( $value ) . '</span>' . ( $sub ? '<span class="lp-kpi__sub">' . esc_html( $sub ) . '</span>' : '' ) . '</div>';
	}
}