Add post scheduling feature

class-wp-press-this-plugin.php

@@ -1552,6 +1552,8 @@ public function html() {
 			'postId'              => $post_ID,
 			'title'               => $post_title,
 			'content'             => $post_content,
+			'postStatus'          => $post->post_status,
+			'postDate'            => mysql_to_rfc3339( $post->post_date ),
 			'nonce'               => wp_create_nonce( 'update-post_' . $post_ID ),
 			'categoryNonce'       => wp_create_nonce( 'add-category' ),
 
@@ -1615,6 +1617,7 @@ public function html() {
 			// Config.
 			'redirInParent'       => $site_settings['redirInParent'],
 			'isRTL'               => is_rtl(),
+			'timezone'            => wp_timezone_string(),
 
 			// Allowed blocks.
 			'allowedBlocks'       => $this->get_allowed_blocks(),

includes/class-press-this-assets.php

@@ -230,6 +230,7 @@ public function get_script_dependencies() {
 			'wp-format-library',
 			'wp-html-entities',
 			'wp-i18n',
+			'wp-keyboard-shortcuts',
 			'wp-primitives',
 		);
 	}

press-this-plugin.php

@@ -184,7 +184,29 @@ function press_this_register_rest_routes() {
 					'type'              => 'string',
 					'sanitize_callback' => 'sanitize_text_field',
 					'default'           => 'draft',
-					'enum'              => array( 'draft', 'publish' ),
+					'enum'              => array( 'draft', 'publish', 'future' ),
+				),
+				'date'           => array(
+					'type'              => 'string',
+					'sanitize_callback' => 'sanitize_text_field',
+					// Validates format only (ISO 8601 datetime). Semantic validation
+					// (e.g. month/day ranges, leap years) is handled server-side by
+					// strtotime() in the save handler, which rejects unparseable
+					// dates and normalizes edge cases like Feb 30 → Mar 2.
+					'validate_callback' => function ( $value ) {
+						if ( empty( $value ) ) {
+							return true;
+						}
+						if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}[T ]\d{2}:\d{2}(:\d{2})?$/', $value ) ) {
+							return new WP_Error(
+								'press_this_invalid_date_format',
+								__( 'Date must be in ISO 8601 format.', 'press-this' ),
+								array( 'status' => 400 )
+							);
+						}
+						return true;
+					},
+					'default'           => '',
 				),
 				'format'         => array(
 					'type'              => 'string',
@@ -342,6 +364,34 @@ function press_this_rest_save_post( $request ) {
 		}
 	}
 
+	// Handle future (scheduled) status.
+	// We intentionally don't reject past dates here. WordPress core's
+	// wp_insert_post() auto-converts future+past-date to 'publish', so
+	// a past date simply publishes immediately — matching core REST API behavior.
+	if ( 'future' === $status ) {
+		if ( current_user_can( 'publish_posts' ) ) {
+			$date = $request->get_param( 'date' );
+			if ( empty( $date ) || false === strtotime( $date ) ) {
+				return new WP_Error(
+					'press_this_invalid_date',
+					__( 'A valid date is required to schedule a post.', 'press-this' ),
+					array( 'status' => 400 )
+				);
+			}
+			// The frontend sends a naive datetime in the site's local timezone (no TZ qualifier).
+			// WordPress sets PHP's timezone to UTC, so strtotime() interprets the string as UTC
+			// and gmdate() formats it back as UTC -- the round-trip preserves the original value.
+			// The result is the site-local time string we need for post_date.
+			$post_data['post_date']     = gmdate( 'Y-m-d H:i:s', strtotime( $date ) );
+			$post_data['post_date_gmt'] = get_gmt_from_date( $post_data['post_date'] );
+			$post_data['post_status']   = 'future';
+			// Required: wp_update_post ignores post_date changes unless edit_date is true.
+			$post_data['edit_date']     = true;
+		} else {
+			$post_data['post_status'] = 'pending';
+		}
+	}
+
 	// Side-load images from content.
 	// Require admin includes needed by media_sideload_image() (not loaded in REST context).
 	require_once ABSPATH . 'wp-admin/includes/file.php';

src/App.js

@@ -47,6 +47,12 @@ export default function App() {
 		publishLabel: __( 'Publish', 'press-this' ),
 	} );
 
+	// Post status and date as React state so they update after scheduling.
+	const [ postStatus, setPostStatus ] = useState(
+		() => data.postStatus || ''
+	);
+	const [ postDate, setPostDate ] = useState( () => data.postDate || '' );
+
 	// Build initial post object for editor.
 	const post = useMemo(
 		() => ( {
@@ -316,6 +322,21 @@ export default function App() {
 		setSaveState( state );
 	}, [] );
 
+	/**
+	 * Handle post status changes from PressThisEditor after a successful save.
+	 * Updates local state so the Header reflects the new status (e.g., "Reschedule").
+	 *
+	 * @param {Object} change        Status change details.
+	 * @param {string} change.status New post status.
+	 * @param {string} change.date   New post date (ISO 8601).
+	 */
+	const handlePostStatusChange = useCallback( ( change ) => {
+		setPostStatus( change.status );
+		if ( change.date ) {
+			setPostDate( change.date );
+		}
+	}, [] );
+
 	// State for undo/redo from editor.
 	// Split into primitive values so React can skip re-renders when values
 	// haven't changed (Object.is comparison). The handlers are stable refs
@@ -360,6 +381,10 @@ export default function App() {
 				onRedo={ redoHandler }
 				hasUndo={ hasUndo }
 				hasRedo={ hasRedo }
+				capabilities={ capabilities }
+				timezone={ data.timezone }
+				postStatus={ postStatus }
+				postDate={ postDate }
 			/>
 
 			<div className="press-this-app__body">
@@ -377,6 +402,8 @@ export default function App() {
 					onScrapeProcessed={ handleScrapeProcessed }
 					onSaveReady={ handleSaveReady }
 					onUndoReady={ handleUndoReady }
+					timezone={ data.timezone }
+					onPostStatusChange={ handlePostStatusChange }
 					categoryNonce={ data.categoryNonce || '' }
 					ajaxUrl={ data.ajaxUrl || '' }
 				/>