<?php
/**
 * Admin hooks: settings, scripts, settings page.
 *
 * @package LeimgLocal
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class LeimgLocal_Admin
 */
class LeimgLocal_Admin {

	/**
	 * Singleton.
	 *
	 * @var LeimgLocal_Admin
	 */
	private static $instance = null;

	/**
	 * Get instance.
	 *
	 * @return LeimgLocal_Admin
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	private function __construct() {
		add_action( 'admin_menu', array( $this, 'add_menu' ) );
		add_action( 'admin_init', array( $this, 'register_settings' ) );
		add_filter( 'plugin_action_links_' . LEIMGLOCAL_PLUGIN_BASENAME, array( $this, 'plugin_links' ) );
	}

	/**
	 * Add settings page.
	 */
	public function add_menu() {
		add_options_page(
			__( '图片本地化', 'leimglocal' ),
			__( '图片本地化', 'leimglocal' ),
			'manage_options',
			'leimglocal',
			array( $this, 'render_settings_page' )
		);
	}

	/**
	 * Register settings.
	 */
	public function register_settings() {
		register_setting(
			'leimglocal_settings',
			'leimglocal_enabled',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_auto_paste',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_debug_mode',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_quality',
			array(
				'type'              => 'integer',
				'sanitize_callback' => function ( $v ) {
					$v = absint( $v );
					return $v >= 1 && $v <= 100 ? $v : 90;
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_lightbox_enabled',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_lightbox_min_size',
			array(
				'type'              => 'integer',
				'sanitize_callback' => function ( $v ) {
					$v = absint( $v );
					return $v >= 100 ? $v : 800;
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_lightbox_post_content_only',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_lightbox_show_icon',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_paste_resize_enabled',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_paste_max_width',
			array(
				'type'              => 'integer',
				'sanitize_callback' => function ( $v ) {
					$v = absint( $v );
					return $v >= 400 ? $v : 1600;
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_paste_max_height',
			array(
				'type'              => 'integer',
				'sanitize_callback' => function ( $v ) {
					$v = absint( $v );
					return $v >= 400 ? $v : 1600;
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_filename_prefix',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					$v = sanitize_file_name( (string) $v );
					$v = trim( $v, '-_.' );
					return $v !== '' ? $v : 'leimglocal';
				},
			)
		);
		register_setting(
			'leimglocal_settings',
			'leimglocal_global_upload_rename',
			array(
				'type'              => 'string',
				'sanitize_callback' => function ( $v ) {
					return $v === '1' ? '1' : '0';
				},
			)
		);
	}

	/**
	 * Render settings page.
	 */
	public function render_settings_page() {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}
		$enabled    = get_option( 'leimglocal_enabled', '1' );
		$auto_paste = get_option( 'leimglocal_auto_paste', '1' );
		$debug_mode = get_option( 'leimglocal_debug_mode', '0' );
		$quality    = get_option( 'leimglocal_quality', 90 );
		$lightbox_enabled  = get_option( 'leimglocal_lightbox_enabled', '0' );
		$lightbox_min_size = (int) get_option( 'leimglocal_lightbox_min_size', 800 );
		$lightbox_post_content_only = get_option( 'leimglocal_lightbox_post_content_only', '1' );
		$lightbox_show_icon = get_option( 'leimglocal_lightbox_show_icon', '0' );
		$paste_resize_enabled = get_option( 'leimglocal_paste_resize_enabled', '1' );
		$paste_max_width      = (int) get_option( 'leimglocal_paste_max_width', 1600 );
		$paste_max_height     = (int) get_option( 'leimglocal_paste_max_height', 1600 );
		$filename_prefix      = get_option( 'leimglocal_filename_prefix', 'leimglocal' );
		$global_upload_rename = get_option( 'leimglocal_global_upload_rename', '0' );
		?>
		<div class="wrap">
			<h1><?php echo esc_html( get_admin_page_title() ); ?></h1>
			<p>插件发布页：<a href="https://www.lezaiyun.com/leimglocal.html" target="_blank">查看这里</a>，公众号：老蒋朋友圈。</p>
			<form method="post" action="options.php">
				<?php settings_fields( 'leimglocal_settings' ); ?>
				<table class="form-table">
					<tr>
						<th scope="row"><?php esc_html_e( '启用插件', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_enabled" value="1" <?php checked( $enabled, '1' ); ?> />
								<?php esc_html_e( '开启后，编辑器中的「本地化图片」及粘贴上传功能才会生效', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '粘贴时自动上传', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_auto_paste" value="1" <?php checked( $auto_paste, '1' ); ?> />
								<?php esc_html_e( '在编辑器中粘贴截图或图片时自动上传到媒体库并插入', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '调试模式', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_debug_mode" value="1" <?php checked( $debug_mode, '1' ); ?> />
								<?php esc_html_e( '开启后在浏览器控制台与编辑器状态栏输出粘贴链路调试信息（仅后台编辑页）。', 'leimglocal' ); ?>
							</label>
							<p class="description"><?php esc_html_e( '用于定位“截图粘贴未触发上传”问题。排查完成后建议关闭。', 'leimglocal' ); ?></p>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '图片质量', 'leimglocal' ); ?></th>
						<td>
							<input type="number" name="leimglocal_quality" value="<?php echo esc_attr( $quality ); ?>" min="1" max="100" />
							<p class="description"><?php esc_html_e( '本地化时 JPEG 压缩质量 (1-100)，仅作预留，当前版本使用原图。', 'leimglocal' ); ?></p>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '截图粘贴自动缩放', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_paste_resize_enabled" value="1" <?php checked( $paste_resize_enabled, '1' ); ?> />
								<?php esc_html_e( '开启后，QQ/微信/截图工具粘贴上传的图片会按最大宽高等比例缩小。', 'leimglocal' ); ?>
							</label>
							<div style="margin-top:8px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;">
								<label>
									<?php esc_html_e( '最大宽度', 'leimglocal' ); ?>
									<input type="number" name="leimglocal_paste_max_width" value="<?php echo esc_attr( $paste_max_width ); ?>" min="400" step="10" style="width:100px;" />
									px
								</label>
								<label>
									<?php esc_html_e( '最大高度', 'leimglocal' ); ?>
									<input type="number" name="leimglocal_paste_max_height" value="<?php echo esc_attr( $paste_max_height ); ?>" min="400" step="10" style="width:100px;" />
									px
								</label>
							</div>
							<p class="description"><?php esc_html_e( '仅在超出最大宽高时进行等比例缩小；小图保持原尺寸。推荐 1600 x 1600。', 'leimglocal' ); ?></p>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '图片命名前缀', 'leimglocal' ); ?></th>
						<td>
							<input type="text" name="leimglocal_filename_prefix" value="<?php echo esc_attr( $filename_prefix ); ?>" class="regular-text" />
							<p class="description"><?php esc_html_e( '用于插件生成文件名，格式为“前缀-时间戳”。例如：myimg-20260427-195012.jpg。建议使用英文、数字和短横线。', 'leimglocal' ); ?></p>
							<label style="display:block;margin-top:8px;">
								<input type="checkbox" name="leimglocal_global_upload_rename" value="1" <?php checked( $global_upload_rename, '1' ); ?> />
								<?php esc_html_e( '开启后，对媒体库手动上传的图片也应用同样命名规则（仅图片生效）。', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '开启图片灯箱效果', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_lightbox_enabled" value="1" <?php checked( $lightbox_enabled, '1' ); ?> />
								<?php esc_html_e( '开启后，前台点击符合条件的图片可放大预览（Lightbox）', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '灯箱最小尺寸（像素）', 'leimglocal' ); ?></th>
						<td>
							<input type="number" name="leimglocal_lightbox_min_size" value="<?php echo esc_attr( $lightbox_min_size ); ?>" min="100" step="10" />
							<p class="description"><?php esc_html_e( '当图片原始宽度或高度大于等于该值时，才允许点击进入灯箱。建议 800。', 'leimglocal' ); ?></p>
							<label style="display:block;margin-top:8px;">
								<input type="checkbox" name="leimglocal_lightbox_show_icon" value="1" <?php checked( $lightbox_show_icon, '1' ); ?> />
								<?php esc_html_e( '开启后，在可点击放大的图片右上角显示放大镜图标；小于最小尺寸的图片不显示。', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php esc_html_e( '只对文章内容生效', 'leimglocal' ); ?></th>
						<td>
							<label>
								<input type="checkbox" name="leimglocal_lightbox_post_content_only" value="1" <?php checked( $lightbox_post_content_only, '1' ); ?> />
								<?php esc_html_e( '开启后，仅文章正文区域（如 entry-content）中的图片支持灯箱效果', 'leimglocal' ); ?>
							</label>
						</td>
					</tr>
				</table>
				<?php submit_button(); ?>
			</form>
			<div class="leimglocal-follow">
				<img src="<?php echo esc_url( LEIMGLOCAL_PLUGIN_URL . 'assets/images/wechat.png' ); ?>" alt="<?php esc_attr_e( '老蒋朋友圈', 'leimglocal' ); ?>" width="200" height="200" />
				<p class="leimglocal-follow__text"><?php esc_html_e( '关注「老蒋朋友圈」聊 网站、运营、创业、AI。', 'leimglocal' ); ?></p>
				<p class="leimglocal-follow__credit">
					<?php echo esc_html( '2026 © ' ); ?>
					<a href="<?php echo esc_url( 'https://www.lezaiyun.com/' ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( '乐在云', 'leimglocal' ); ?></a>
					<?php echo esc_html( ' · By ' ); ?>
					<a href="<?php echo esc_url( 'https://www.laojiang.me/' ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( '老蒋', 'leimglocal' ); ?></a>
				</p>
			</div>
			<style>
				.leimglocal-follow {
					margin: 28px 0 12px;
					padding-top: 24px;
					border-top: 1px solid #dcdcde;
					text-align: center;
				}
				.leimglocal-follow img {
					display: block;
					width: 200px;
					height: 200px;
					margin: 0 auto 12px;
				}
				.leimglocal-follow__text {
					margin: 0 0 8px;
					color: #1d2327;
				}
				.leimglocal-follow__credit {
					margin: 0;
					color: #646970;
				}
			</style>
		</div>
		<?php
	}

	/**
	 * Add settings link on plugins list.
	 *
	 * @param array $links Plugin action links.
	 * @return array
	 */
	public function plugin_links( $links ) {
		$links[] = '<a href="' . esc_url( admin_url( 'options-general.php?page=leimglocal' ) ) . '">' . esc_html__( '设置', 'leimglocal' ) . '</a>';
		return $links;
	}

	/**
	 * Get script localization data for admin.
	 *
	 * @param int $post_id Current post ID.
	 * @return array
	 */
	public static function get_script_data( $post_id = 0 ) {
		return array(
			'ajax_url'    => admin_url( 'admin-ajax.php' ),
			'nonce'       => wp_create_nonce( 'leimglocal_localize' ),
			'paste_nonce' => wp_create_nonce( 'leimglocal_paste' ),
			'post_id'     => (int) $post_id,
			'enabled'     => leimglocal_is_enabled(),
			'auto_paste'  => get_option( 'leimglocal_auto_paste', '1' ) === '1',
			'debug_mode'  => get_option( 'leimglocal_debug_mode', '0' ) === '1',
			'i18n'        => array(
				'button'        => __( '本地化图片', 'leimglocal' ),
				'processing'     => __( '正在处理…', 'leimglocal' ),
				'done'          => __( '完成', 'leimglocal' ),
				'error'         => __( '操作失败', 'leimglocal' ),
				'no_images'     => __( '未发现需要本地化的外部图片', 'leimglocal' ),
				'paste_upload_failed' => __( '图片粘贴上传失败，请稍后重试。', 'leimglocal' ),
				'image_name_prompt' => __( '请输入当前图片自定义名称（可留空）。', 'leimglocal' ),
				'default_image_name_label' => __( '本篇默认图名', 'leimglocal' ),
				'default_image_name_placeholder' => __( '例如：banner、封面、步骤图', 'leimglocal' ),
				'default_image_name_help' => __( '粘贴图片时优先使用该名称；可为空。', 'leimglocal' ),
				'default_image_name_prompt' => __( '请先输入本篇默认图名（可留空），后续本篇会自动复用。', 'leimglocal' ),
				'clear_default_image_name' => __( '清空', 'leimglocal' ),
			),
		);
	}
}