<?php
defined( 'ABSPATH' ) || exit;

class WVRD_Admin {

    public function __construct() {
        add_action( 'admin_menu', array( $this, 'register_menu' ) );
        add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_assets' ) );
        add_action( 'admin_init', array( $this, 'handle_row_action' ) );
        add_action( 'admin_post_wvrd_generate', array( $this, 'handle_generate' ) );
        add_action( 'admin_post_wvrd_export', array( $this, 'handle_export' ) );
        add_action( 'admin_post_wvrd_save_desc', array( $this, 'handle_save_desc' ) );
        add_action( 'admin_post_wvrd_bulk_delete', array( $this, 'handle_bulk_delete' ) );
        add_action( 'admin_post_wvrd_bulk_disable', array( $this, 'handle_bulk_disable' ) );
        add_action( 'admin_post_wvrd_bulk_enable', array( $this, 'handle_bulk_enable' ) );
    }

    public function handle_row_action() {
        if ( ! isset( $_GET['page'], $_GET['action'], $_GET['id'], $_GET['_wpnonce'] ) ) return;
        if ( $_GET['page'] !== 'wvrd-codes' ) return;
        if ( ! current_user_can( 'manage_options' ) ) return;

        $action = sanitize_text_field( $_GET['action'] );
        $id     = intval( $_GET['id'] );

        if ( ! in_array( $action, array( 'disable', 'enable', 'delete' ) ) ) return;
        if ( ! wp_verify_nonce( $_GET['_wpnonce'], 'wvrd_action_' . $id ) ) return;

        if ( $action === 'disable' ) WVRD_Redeem::update_status( $id, 2 );
        if ( $action === 'enable' )  WVRD_Redeem::update_status( $id, 0 );
        if ( $action === 'delete' )  WVRD_Redeem::delete_code( $id );

        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&updated=1' ) );
        exit;
    }

    public function register_menu() {
        add_submenu_page(
            'wpcom-member-pro',
            '兑换码管理',
            '兑换码管理',
            'manage_options',
            'wvrd-codes',
            array( $this, 'page_codes' )
        );
    }

    public function enqueue_assets( $hook ) {
        if ( strpos( $hook, 'wvrd-codes' ) === false ) return;
        wp_enqueue_style( 'wvrd-admin', WVRD_URL . 'assets/admin.css', array(), WVRD_VERSION );
        wp_enqueue_script( 'wvrd-admin', WVRD_URL . 'assets/admin.js', array( 'jquery' ), WVRD_VERSION, true );
    }

    public function page_codes() {
        $vip_types = \WPCOM\Member\VIP::get_vip_types();
        $lifetimes = WVRD_Redeem::$lifetimes;

        $search   = isset( $_GET['s'] ) ? sanitize_text_field( $_GET['s'] ) : '';
        $status   = isset( $_GET['status'] ) ? sanitize_text_field( $_GET['status'] ) : 'all';
        $page     = isset( $_GET['paged'] ) ? intval( $_GET['paged'] ) : 1;
        $result   = WVRD_Redeem::get_codes( array( 'search' => $search, 'status' => $status, 'page' => $page, 'per_page' => 20 ) );
        $items    = $result['items'];
        $total    = $result['total'];
        $pages    = ceil( $total / 20 );

        $status_labels = array( 'all' => '全部', '0' => '未使用', '1' => '已使用', '2' => '已禁用' );
        include WVRD_PATH . 'templates/admin-page.php';
    }

    public function handle_generate() {
        check_admin_referer( 'wvrd_generate' );
        if ( ! current_user_can( 'manage_options' ) ) wp_die( '权限不足' );

        $vip_type    = sanitize_text_field( $_POST['vip_type'] );
        $vip_lifetime = sanitize_text_field( $_POST['vip_lifetime'] );
        $count       = min( 500, max( 1, intval( $_POST['count'] ) ) );
        $expired_at  = sanitize_text_field( $_POST['expired_at'] );
        $remark      = sanitize_text_field( $_POST['remark'] );

        WVRD_Redeem::generate_codes( $vip_type, $vip_lifetime, $count, $expired_at, $remark );
        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&generated=' . $count ) );
        exit;
    }

    public function handle_bulk_enable() {
        check_admin_referer( 'wvrd_bulk_delete' );
        if ( ! current_user_can( 'manage_options' ) ) wp_die( '权限不足' );

        $ids = isset( $_POST['ids'] ) ? array_map( 'intval', (array) $_POST['ids'] ) : array();
        foreach ( $ids as $id ) {
            if ( $id > 0 ) WVRD_Redeem::update_status( $id, 0 );
        }
        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&updated=1' ) );
        exit;
    }

    public function handle_bulk_disable() {
        check_admin_referer( 'wvrd_bulk_delete' );
        if ( ! current_user_can( 'manage_options' ) ) wp_die( '权限不足' );

        $ids = isset( $_POST['ids'] ) ? array_map( 'intval', (array) $_POST['ids'] ) : array();
        foreach ( $ids as $id ) {
            if ( $id > 0 ) WVRD_Redeem::update_status( $id, 2 );
        }
        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&updated=1' ) );
        exit;
    }

    public function handle_bulk_delete() {
        check_admin_referer( 'wvrd_bulk_delete' );
        if ( ! current_user_can( 'manage_options' ) ) wp_die( '权限不足' );

        $ids = isset( $_POST['ids'] ) ? array_map( 'intval', (array) $_POST['ids'] ) : array();
        $count = 0;
        foreach ( $ids as $id ) {
            if ( $id > 0 ) {
                WVRD_Redeem::delete_code( $id );
                $count++;
            }
        }
        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&deleted=' . $count ) );
        exit;
    }

    public function handle_save_desc() {
        check_admin_referer( 'wvrd_save_desc' );
        if ( ! current_user_can( 'manage_options' ) ) wp_die( '权限不足' );
        update_option( 'wvrd_redeem_desc', wp_kses_post( $_POST['wvrd_redeem_desc'] ) );
        wp_redirect( admin_url( 'admin.php?page=wvrd-codes&desc_saved=1' ) );
        exit;
    }
}