# xspeed/1.1.8/includes/modules/Migration/MigrationModule.php

xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN, version 1.1.8. 739 lines.

- Page: https://pluginprobe.com/plugins/xspeed/1.1.8/code/includes/modules/Migration/MigrationModule.php
- Raw: https://pluginprobe.com/plugins/xspeed/1.1.8/raw/includes/modules/Migration/MigrationModule.php
- Modified: 2026-08-19T18:43:32+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/xspeed/1.1.8/code/includes/modules/Migration/MigrationModule.php#L10-L20`.

```php
<?php
/**
 * Migration module — one-click settings import from other caching
 * plugins (WP Rocket, W3 Total Cache, WP Super Cache).
 *
 * Tier: Pro per FEATURES.md "Migration" — both rows tagged Pro
 * (cross-plugin importer is a non-trivial value-add; LiteSpeed
 * doesn't have one).
 *
 * @package XSpeed
 */

declare(strict_types=1);

namespace XSpeed\Modules\Migration;

defined( 'ABSPATH' ) || exit;

use XSpeed\Module;
use XSpeed\Migration;

final class MigrationModule extends Module {

	public const SLUG    = 'migration';
	public const TIER    = self::TIER_FREE;
	public const VERSION = '1.0.0';

	public function ui_metadata(): array {
		return array(
			'label'        => 'Migration',
			'icon'         => 'Import',
			'description'  => 'Import settings from WP Rocket, W3 Total Cache, or WP Super Cache.',
			'custom_panel' => 'MigrationPanel',
		);
	}

	public function settings_schema(): array {
		return array();
	}

	/**
	 * Per-user meta key recording which detected source the user dismissed
	 * the migration notice for. Keyed by source so dismissing the LiteSpeed
	 * prompt doesn't hide a later WP Rocket prompt.
	 */
	private const DISMISS_META = 'xspeed_migration_notice_dismissed';

	/** Query arg used by the one-click dismiss link. */
	private const DISMISS_ARG = 'xspeed_dismiss_migration';

	/**
	 * Per-user list of source ids the user has already SEEN (by opening the
	 * Migration panel). Seen sources don't count toward the sidebar badge —
	 * the badge means "new importable plugins you haven't looked at yet", so
	 * it clears once the user visits the page. A plugin installed LATER is
	 * still un-seen, so it re-badges.
	 */
	private const SEEN_META = 'xspeed_migration_seen_sources';

	public function boot(): void {
		// Dashboard nudge: when another caching plugin is detected, offer a
		// one-click import — the same "we noticed you use X" prompt other
		// plugins show. Renders on standard WP admin screens (NOT xSpeed's
		// own pages, where the Migration panel already covers it).
		add_action( 'admin_notices', array( $this, 'maybe_render_notice' ) );
		add_action( 'admin_init', array( $this, 'handle_dismiss' ) );
		// Sidebar attention badge: surface the count of importable plugins on
		// the Migration nav item so the user knows there's an action to take.
		add_filter( 'xspeed_module_descriptor', array( $this, 'add_sidebar_badge' ), 10, 2 );
	}

	/**
	 * Badge the Migration module's sidebar item with the count of importable
	 * caching plugins the user hasn't SEEN or dismissed yet — surfaces at a
	 * glance how many NEW sources they could migrate from. Opening the panel
	 * marks sources seen (see rest_status), so the badge clears after a visit.
	 * Other modules untouched.
	 *
	 * @param array  $entry  Module descriptor being built.
	 * @param object $module The module instance.
	 * @return array
	 */
	public function add_sidebar_badge( array $entry, $module ): array {
		if ( ( $entry['slug'] ?? '' ) !== self::SLUG ) {
			return $entry;
		}
		$uid       = get_current_user_id();
		$dismissed = (array) get_user_meta( $uid, self::DISMISS_META, true );
		$seen      = (array) get_user_meta( $uid, self::SEEN_META, true );
		$count     = 0;
		foreach ( $this->detected_sources( $dismissed ) as $s ) {
			if ( ! in_array( $s['id'], $seen, true ) ) {
				++$count;
			}
		}
		if ( $count > 0 ) {
			$entry['badge'] = $count;
		}
		return $entry;
	}

	/**
	 * Render the migration nudge on the dashboard when exactly one importable
	 * source is detected and the user hasn't dismissed it. Kept deliberately
	 * conservative: skipped on xSpeed's own screens, for users without
	 * manage_options, and once dismissed.
	 */
	public function maybe_render_notice(): void {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}
		// Don't double up on xSpeed's own pages — the Migration panel is right there.
		if ( class_exists( '\\XSpeed\\Admin' ) && \XSpeed\Admin::is_plugin_page() ) {
			return;
		}

		$dismissed = (array) get_user_meta( get_current_user_id(), self::DISMISS_META, true );
		$detected  = $this->detected_sources( $dismissed );
		if ( empty( $detected ) ) {
			return;
		}

		$brand     = $this->branding_name();
		$base_url  = admin_url( 'admin.php?page=xspeed' );
		// The dashboard selects the panel from the URL hash. The hash must be
		// the LAST thing in the URL — any query arg (e.g. ?source=…) has to go
		// BEFORE the '#', or it becomes part of the fragment ("migration?source=…")
		// which no module slug matches, so the app falls back to the first
		// panel (#cache). That was the "Import goes to #cache" bug.
		$panel_url = $base_url . '#migration';
		$dismiss_url = wp_nonce_url(
			add_query_arg( self::DISMISS_ARG, 'all' ),
			'xspeed_dismiss_migration_all'
		);
		$count = count( $detected );

		// Branded card. All inline-styled (admin-notice context has no
		// bundled stylesheet) but mapped to DESIGN.md tokens: accent #2563eb,
		// neutral text #1e293b / #475569, rounded-lg, comfortable padding.
		$heading = sprintf(
			/* translators: %d: number of detected caching plugins. */
			_n(
				'Migrate to %1$s — %2$d caching plugin detected',
				'Migrate to %1$s — %2$d caching plugins detected',
				$count,
				'xspeed'
			),
			$brand,
			$count
		);

		$brand_color = $this->brand_color();
		// Brand-color the Import CTAs (override WP's default blue primary).
		// This notice is echoed directly (not through wp_kses), so an inline
		// <style> block is fine here.
		echo '<style>.xspeed-migration-notice .xspeed-mig-cta.button-primary{'
			. 'background:' . esc_attr( $brand_color ) . ' !important;'
			. 'border-color:' . esc_attr( $brand_color ) . ' !important;box-shadow:none !important;'
			. 'box-sizing:border-box !important;min-height:36px !important;max-height:36px !important;height:36px !important;line-height:1 !important;padding-top:0;padding-bottom:0;display:inline-flex;align-items:center;}'
			. '.xspeed-migration-notice .xspeed-mig-cta.button-primary:hover{filter:brightness(1.15);}'
			. '</style>';
		echo '<div class="notice xspeed-migration-notice" style="padding:0;border:1px solid #e2e8f0;border-left:4px solid ' . esc_attr( $brand_color ) . ';border-radius:8px;overflow:hidden;background:#fff;">';
		echo '<div style="padding:16px 18px;">';

		// Header row: brand mark + heading.
		echo '<div style="display:flex;align-items:center;gap:10px;margin-bottom:6px;">';
		$logo = $this->branding_logo();
		if ( '' !== $logo ) {
			echo '<span style="display:inline-flex;width:24px;height:24px;flex:0 0 24px;">' . $logo . '</span>'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- logo is a sanitized inline SVG from branding, escaped at source.
		}
		echo '<strong style="font-size:14px;color:#1e293b;">' . esc_html( $heading ) . '</strong>';
		echo '</div>';

		// Says what the button does and what it does NOT do. The old copy
		// mentioned only the import while the REST route also deactivated the
		// source — this notice is the first and most-seen touchpoint, so it
		// undersold a destructive action. Deactivation is now opt-in, and the
		// copy states that rather than leaving it to be inferred. (#189)
		echo '<p style="margin:0 0 12px;color:#475569;font-size:13px;">'
			. esc_html__( 'Import your existing settings instead of configuring everything by hand. You choose what happens to the old plugin — switch it off (recommended, since two page caches conflict) or leave it running. Pick a source to migrate:', 'xspeed' )
			. '</p>';

		// One row per detected source: label + value count + its own Import button.
		echo '<div style="display:flex;flex-direction:column;gap:8px;">';
		foreach ( $detected as $s ) {
			// Query arg BEFORE the hash so the dashboard still reads #migration.
			$src_url = $base_url . '&source=' . rawurlencode( $s['id'] ) . '#migration';
			echo '<div style="display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 12px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:6px;">';
			$mapped = (int) ( $s['mapped_count'] ?? 0 );
			echo '<span style="font-size:13px;color:#1e293b;"><strong>' . esc_html( $s['label'] ) . '</strong>'
				. ' <span style="color:#94a3b8;">'
				. esc_html(
					sprintf(
						/* translators: %d: number of settings xSpeed will actually import. */
						_n( 'imports %d setting', 'imports %d settings', $mapped, 'xspeed' ),
						$mapped
					)
				)
				. '</span></span>';
			echo '<a href="' . esc_url( $src_url ) . '" class="button button-primary xspeed-mig-cta" style="flex:0 0 auto;">'
				. esc_html__( 'Import', 'xspeed' ) . '</a>';
			echo '</div>';
		}
		echo '</div>';

		// Footer: open the full panel + dismiss the whole notice.
		echo '<p style="margin:12px 0 0;display:flex;gap:16px;align-items:center;">';
		echo '<a href="' . esc_url( $panel_url ) . '" style="font-size:13px;">' . esc_html__( 'Open Migration panel', 'xspeed' ) . '</a>';
		echo '<a href="' . esc_url( $dismiss_url ) . '" style="font-size:13px;color:#94a3b8;text-decoration:none;">' . esc_html__( 'Dismiss', 'xspeed' ) . '</a>';
		echo '</p>';

		echo '</div></div>';
	}

	/**
	 * Detected sources that are still actionable — not dismissed and not
	 * already imported — richest first. These are what the dashboard notice
	 * and the sidebar badge count: "new caching plugins you could migrate
	 * from". Once imported, a source drops out.
	 *
	 * @param string[] $dismissed Dismissed source ids ('all' hides every one).
	 * @return array<int,array{id:string,label:string,mapped_count:int}>
	 */
	private function detected_sources( array $dismissed = array() ): array {
		if ( in_array( 'all', $dismissed, true ) ) {
			return array();
		}
		$out = array();
		foreach ( Migration::status() as $s ) {
			if ( empty( $s['detected'] ) || ! empty( $s['imported'] ) || in_array( $s['id'], $dismissed, true ) ) {
				continue;
			}
			$out[] = $s;
		}
		// Order by the honest mapped count (what we actually import).
		usort( $out, static fn( $a, $b ) => (int) $b['mapped_count'] <=> (int) $a['mapped_count'] );
		return $out;
	}

	/** Inline brand logo SVG when white-label supplies one; else empty. */
	private function branding_logo(): string {
		$brand = apply_filters( 'xspeed_branding', array() );
		return isset( $brand['logo_svg'] ) && is_string( $brand['logo_svg'] ) ? $brand['logo_svg'] : '';
	}

	/** Persist the per-source dismissal when the user clicks our Dismiss link. */
	public function handle_dismiss(): void {
		if ( ! isset( $_GET[ self::DISMISS_ARG ] ) || ! current_user_can( 'manage_options' ) ) {
			return;
		}
		$source = sanitize_key( wp_unslash( $_GET[ self::DISMISS_ARG ] ) );
		if ( ! isset( $_GET['_wpnonce'] ) || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['_wpnonce'] ) ), 'xspeed_dismiss_migration_' . $source ) ) {
			return;
		}
		$uid       = get_current_user_id();
		$dismissed = (array) get_user_meta( $uid, self::DISMISS_META, true );
		if ( ! in_array( $source, $dismissed, true ) ) {
			$dismissed[] = $source;
			update_user_meta( $uid, self::DISMISS_META, $dismissed );
		}
		// Redirect to drop the query args so a reload doesn't re-trigger.
		wp_safe_redirect( remove_query_arg( array( self::DISMISS_ARG, '_wpnonce' ) ) );
		exit;
	}

	/**
	 * The single most relevant detected source to nudge about, or null.
	 * Picks the detected source with the most settings (the richest import),
	 * skipping any the user has already dismissed — so dismissing the top
	 * prompt surfaces the next source rather than going silent while another
	 * importable plugin is still present. Only one prompt at a time keeps the
	 * dashboard uncluttered.
	 *
	 * @param string[] $dismissed Source ids the user has dismissed.
	 * @return array{id:string,label:string,value_count:int}|null
	 */
	private function top_detected_source( array $dismissed = array() ): ?array {
		$best = null;
		foreach ( Migration::status() as $s ) {
			if ( empty( $s['detected'] ) || in_array( $s['id'], $dismissed, true ) ) {
				continue;
			}
			if ( null === $best || (int) $s['value_count'] > (int) $best['value_count'] ) {
				$best = $s;
			}
		}
		return $best;
	}

	/** Brand name honoring Pro white-label, falling back to "xSpeed". */
	private function branding_name(): string {
		$brand = apply_filters( 'xspeed_branding', array() );
		return isset( $brand['name'] ) && '' !== $brand['name'] ? (string) $brand['name'] : 'xSpeed';
	}

	/**
	 * Brand/logo color for the notice accent + Import buttons. White-label
	 * sites can set `brand_color` via the xspeed_branding filter; otherwise
	 * we use the xSpeed logo color (near-black), not the design blue accent —
	 * the notice should match the on-screen logo. (FBS-82379)
	 */
	private function brand_color(): string {
		$brand = apply_filters( 'xspeed_branding', array() );
		$color = isset( $brand['brand_color'] ) ? (string) $brand['brand_color'] : '';
		return preg_match( '/^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$/', $color ) ? $color : '#1e1e1e';
	}

	public function rest_routes(): array {
		return array(
			array(
				'path'     => '/status',
				'methods'  => 'GET',
				'callback' => array( $this, 'rest_status' ),
			),
			array(
				'path'     => '/preview',
				'methods'  => 'POST',
				'callback' => array( $this, 'rest_preview' ),
			),
			array(
				'path'     => '/apply',
				'methods'  => 'POST',
				'callback' => array( $this, 'rest_apply' ),
			),
		);
	}

	public function rest_status( \WP_REST_Request $request ) {
		$status = Migration::status();
		// Opening the Migration panel triggers this call — treat it as the
		// user having SEEN every currently-detected source, which clears the
		// sidebar count badge. Record the detected ids against the user.
		$this->mark_sources_seen( $status );
		return rest_ensure_response( array( 'sources' => $status ) );
	}

	/**
	 * Record the currently-detected source ids as seen for this user, so the
	 * sidebar badge stops counting them. Merges with any prior seen set.
	 *
	 * @param array $status Output of Migration::status().
	 */
	private function mark_sources_seen( array $status ): void {
		$uid = get_current_user_id();
		if ( ! $uid ) {
			return;
		}
		$seen = (array) get_user_meta( $uid, self::SEEN_META, true );
		$add  = array();
		foreach ( $status as $s ) {
			if ( ! empty( $s['detected'] ) ) {
				$add[] = $s['id'];
			}
		}
		$merged = array_values( array_unique( array_merge( $seen, $add ) ) );
		if ( $merged !== $seen ) {
			update_user_meta( $uid, self::SEEN_META, $merged );
		}
	}

	public function rest_preview( \WP_REST_Request $request ) {
		$params = $request->get_json_params();
		$source = isset( $params['source'] ) ? (string) $params['source'] : '';
		$patch  = Migration::preview( $source );
		if ( null === $patch ) {
			return new \WP_Error( 'xspeed_pro_mig_no_source', 'Source not detected or unknown.', array( 'status' => 404 ) );
		}
		return rest_ensure_response( array( 'patch' => $patch ) );
	}

	public function rest_apply( \WP_REST_Request $request ) {
		$params = $request->get_json_params();
		$source = isset( $params['source'] ) ? (string) $params['source'] : '';
		if ( '' === $source ) {
			return new \WP_Error( 'xspeed_pro_mig_no_source', 'Provide a source id.', array( 'status' => 400 ) );
		}

		/*
		 * Deactivating the source is the CALLER's decision, and it defaults to
		 * NO. (#189)
		 *
		 * This used to happen unconditionally: the request carried only
		 * `source`, so the server could not distinguish "the user clicked
		 * through our warning" from any other POST to this route. The only
		 * guard rail was an InlineConfirm in the React client, which is the
		 * wrong layer for a destructive action — and WP-CLI and MCP, hitting
		 * the same product action, did the opposite and left the plugin on.
		 *
		 * Defaulting to false rather than true is what makes the documented
		 * contract true again (docs/user/advanced-migration.md said migration
		 * "never changes" the old plugin) and matches the house rule that we
		 * never modify another plugin's state on our own initiative. The panel
		 * now passes deactivate:true explicitly after its confirm, so the
		 * common path is unchanged for users.
		 */
		$deactivate = ! empty( $params['deactivate_source'] );

		$results = Migration::apply( $source );

		$deactivated  = false;
		$source_label = '';
		foreach ( Migration::status() as $s ) {
			if ( $s['id'] === $source ) {
				$source_label = (string) $s['label'];
				break;
			}
		}

		/*
		 * Did the import actually cover anything?
		 *
		 * Gate on `applied`, NOT on `ok`. `ok` is update_option()'s return
		 * value, which is FALSE when the stored value did not change — so a
		 * re-import of settings already in place reports ok:false on every
		 * module while having succeeded completely. Gating on `ok` therefore
		 * refused to deactivate after a perfectly good second import, which
		 * is how this read on a live site: {"cache":{"ok":false,"applied":
		 * ["cache_expiry","excluded_urls"]}}.
		 *
		 * `applied` lists the keys the import decided were meaningful, so a
		 * non-empty one means the source really was read and mapped. An empty
		 * $results (unknown source, nothing meaningful) still blocks
		 * deactivation, which is the case that matters: never switch a plugin
		 * off on the back of an import that did nothing. (#189)
		 */
		$imported_something = false;
		foreach ( (array) $results as $info ) {
			if ( is_array( $info ) && ! empty( $info['applied'] ) ) {
				$imported_something = true;
				break;
			}
		}

		$refused         = '';
		$refused_message = '';
		if ( $deactivate && $imported_something ) {
			if ( ! $this->can_deactivate( $source ) ) {
				// Not an error: the import succeeded and is the thing the user
				// asked for. Report the refusal so the panel can say why the
				// plugin is still on rather than silently implying it is off.
				$refused = 'insufficient_capability';

				// Name WHO can do it, not just that the caller cannot. On a
				// network-activated source the answer is specifically a network
				// administrator, and a site admin has no way to work that out
				// from a bare capability code. (#189 AC5)
				$file            = Migration::plugin_file( $source );
				$network_scoped  = is_multisite() && '' !== $file && is_plugin_active_for_network( $file );
				$refused_message = $network_scoped
					? sprintf(
						/* translators: %s: source plugin label. */
						__( '%s is activated across the whole network, so only a network administrator can switch it off. Your settings were imported — ask a network administrator to deactivate it.', 'xspeed' ),
						$source_label
					)
					: sprintf(
						/* translators: %s: source plugin label. */
						__( 'Your account can change settings but not switch plugins off, so %s is still active. Your settings were imported — ask an administrator to deactivate it.', 'xspeed' ),
						$source_label
					);
			} else {
				$deactivated = $this->deactivate_source( $source );
			}
		}

		// The user declined (or was refused) and the source is still running.
		// Record it so the warning OUTLIVES this screen — see pending_source().
		// Called on every import, not just the declining ones: the helper
		// checks the plugin's live state and clears itself when it is off, so
		// a later "import and switch" also resolves an earlier warning.
		if ( $imported_something ) {
			Migration::remember_active_source( $source, $source_label );
		}

		if ( class_exists( '\\XSpeed\\Activity_Log' ) && ! empty( $results ) ) {
			\XSpeed\Activity_Log::record(
				'migration_applied',
				$deactivated
					? sprintf( 'Imported settings from %1$s and deactivated it.', $source_label )
					: sprintf( 'Imported settings from %s.', $source_label ),
				\XSpeed\Activity_Log::INFO
			);
		}

		return rest_ensure_response(
			array(
				'results'      => $results,
				'deactivated'  => $deactivated,
				'source_label' => $source_label,
				// Empty unless we were asked to deactivate and declined to.
				// The panel needs to distinguish "you didn't ask" from "you
				// asked and you may not", or it would report the source as
				// still active with no explanation.
				'refused'         => $refused,
				// A ready-to-show sentence naming who CAN do it. The panel
				// prints this verbatim rather than mapping codes to copy, so
				// the network-vs-site distinction stays in one place.
				'refused_message' => $refused_message,
			)
		);
	}

	/**
	 * May the CURRENT user switch this source plugin off?
	 *
	 * The route itself only requires `manage_options` (the module default),
	 * which is right for importing settings — that writes nothing but our own
	 * options. Deactivating somebody else's plugin is a different act, and WP
	 * core guards its own plugins screen with `activate_plugins`, escalating
	 * to `manage_network_plugins` for a network-active plugin.
	 *
	 * Without this check a subsite Administrator — who has manage_options but
	 * neither of those — could deactivate a NETWORK-ACTIVE caching plugin
	 * across every site in the network with one REST call. Reproduced on a
	 * live multisite install for #189; core would have refused the same user
	 * on wp-admin/plugins.php.
	 *
	 * @param string $source Source id.
	 */
	private function can_deactivate( string $source ): bool {
		$file = Migration::plugin_file( $source );
		if ( '' === $file ) {
			return false;
		}

		foreach ( array( 'plugin.php' ) as $inc ) {
			require_once ABSPATH . 'wp-admin/includes/' . $inc;
		}

		// Network-active plugins are a network-level object: deactivating one
		// affects every site, so it needs the network capability regardless of
		// how much power the caller holds on this one site.
		if ( is_multisite() && is_plugin_active_for_network( $file ) ) {
			return current_user_can( 'manage_network_plugins' );
		}

		return current_user_can( 'activate_plugins' );
	}

	/**
	 * Deactivate the source caching plugin (network-wide on multisite).
	 * Returns true only if it was active and is now off.
	 *
	 * Callers MUST gate this on can_deactivate() — it performs no capability
	 * check of its own, because the CLI path resolves permission differently
	 * (a WP-CLI operator is root by definition and has no current user).
	 *
	 * @param string $source Source id.
	 * @return bool
	 */
	private function deactivate_source( string $source ): bool {
		// One home for this map, shared with Migration::status()'s active
		// flag. A private copy here could drift and deactivate a plugin the
		// panel had reported as inactive. (#189)
		$file = Migration::plugin_file( $source );
		if ( '' === $file ) {
			return false;
		}
		// deactivate_plugins() fires each plugin's deactivation hook, and some
		// (e.g. WP Super Cache) call admin-only helpers like get_home_path()
		// in theirs. Those live in wp-admin/includes/file.php — NOT loaded
		// during a REST request — so without these includes the deactivation
		// hook fatals with "undefined function get_home_path()". Load the
		// admin plumbing first so any source plugin's teardown runs cleanly.
		foreach ( array( 'plugin.php', 'file.php', 'misc.php' ) as $inc ) {
			require_once ABSPATH . 'wp-admin/includes/' . $inc;
		}
		if ( ! is_plugin_active( $file ) ) {
			return false;
		}

		/*
		 * Be EXPLICIT about scope rather than leaving $network_wide at null.
		 *
		 * Core evaluates `( false !== $network_wide ) && is_plugin_active_for_network()`,
		 * and `false !== null` is true — so the default silently takes the
		 * network-wide branch. That is the correct scope for a network-active
		 * plugin (a per-site deactivation would not turn it off anyway), but
		 * it should be a decision we state, not a fact of PHP's comparison
		 * rules. can_deactivate() has already required the matching
		 * capability for whichever branch this picks. (#189)
		 */
		$network_wide = is_multisite() && is_plugin_active_for_network( $file );
		deactivate_plugins( $file, false, $network_wide );

		return ! is_plugin_active( $file );
	}

	public function cli_commands(): array {
		return array(
			array(
				'name'      => 'xspeed migrate',
				'callback'  => array( $this, 'cli_handler' ),
				'shortdesc' => 'Import settings from another caching plugin.',
				'synopsis'  => array(
					array(
						'type'     => 'positional',
						'name'     => 'action',
						'options'  => array( 'status', 'preview', 'apply' ),
						'optional' => true,
					),
					array(
						'type'     => 'assoc',
						'name'     => 'source',
						'optional' => true,
					),
					array(
						'type'        => 'flag',
						'name'        => 'deactivate-source',
						'description' => 'After a successful import, also deactivate the source plugin. Off by default: running two page caches at once breaks both, but switching off another plugin is your call, not ours.',
						'optional'    => true,
					),
				),
			),
		);
	}

	public function cli_handler( array $args, array $assoc ): void {
		$action = $args[0] ?? 'status';
		switch ( $action ) {
			case 'status':
				foreach ( Migration::status() as $s ) {
					\WP_CLI::log( sprintf( '%-20s %s %d values', $s['id'], $s['detected'] ? 'DETECTED' : 'missing ', $s['value_count'] ) );
				}
				return;
			case 'preview':
				$src = (string) ( $assoc['source'] ?? '' );
				$p   = Migration::preview( $src );
				if ( null === $p ) {
					\WP_CLI::error( 'Source not detected or unknown: ' . $src );
				}
				\WP_CLI::log( wp_json_encode( $p, JSON_PRETTY_PRINT ) );
				return;
			case 'apply':
				$src = (string) ( $assoc['source'] ?? '' );
				$r   = Migration::apply( $src );
				if ( empty( $r ) ) {
					\WP_CLI::error( 'Nothing imported.' );
				}
				foreach ( $r as $mod => $info ) {
					/*
					 * "failed" was a lie. `ok` is update_option()'s return,
					 * which is false when the stored value did not CHANGE — so
					 * re-importing settings already in place printed
					 * "failed" for every module beside the list of fields it
					 * had just imported correctly. Report what actually
					 * happened instead. (#189)
					 */
					$applied = (array) ( $info['applied'] ?? array() );
					if ( empty( $applied ) ) {
						$state = 'nothing to import';
					} elseif ( ! empty( $info['ok'] ) ) {
						$state = 'imported';
					} else {
						$state = 'already up to date';
					}
					\WP_CLI::log( sprintf( '%-20s %-18s %s', $mod, $state, implode( ',', $applied ) ) );
				}

				/*
				 * Same contract as REST: deactivate only when asked. This path
				 * used to never deactivate AND never say so, so an operator
				 * (or an AI through MCP `run_command`) finished with two page
				 * caches live on the site and nothing in the output to say it.
				 * That is the failure mode the troubleshooting docs describe
				 * as breaking caching for both plugins. (#189)
				 *
				 * No capability check here: a WP-CLI caller is root by
				 * definition and there is no current user to test. The gate
				 * that matters is on the REST route, which is the one a
				 * browser can reach.
				 */
				// `applied`, not `ok` — see rest_apply() for why ok:false is a
				// normal outcome of a successful re-import.
				$imported_something = false;
				foreach ( (array) $r as $info ) {
					if ( is_array( $info ) && ! empty( $info['applied'] ) ) {
						$imported_something = true;
						break;
					}
				}

				// WP-CLI normalises --deactivate-source to a 'deactivate-source'
				// key; accept the underscore spelling too so MCP callers passing
				// options as JSON don't have to guess which one we mean.
				$want_off = ! empty( $assoc['deactivate-source'] ) || ! empty( $assoc['deactivate_source'] );
				$file     = Migration::plugin_file( $src );

				require_once ABSPATH . 'wp-admin/includes/plugin.php';
				$still_on = '' !== $file && is_plugin_active( $file );

				if ( $want_off && $imported_something && $still_on ) {
					if ( $this->deactivate_source( $src ) ) {
						\WP_CLI::log( sprintf( 'Deactivated %s.', $src ) );
						$still_on = false;
					} else {
						\WP_CLI::warning( sprintf( 'Could not deactivate %s.', $src ) );
					}
				}

				if ( $still_on ) {
					\WP_CLI::warning(
						sprintf(
							'%s is still active. Two page caches running together fight over the drop-in and can break caching for both — deactivate it, or re-run with --deactivate-source.',
							$src
						)
					);
				}

				// Same persistent record as the REST path, so a CLI or MCP
				// import that leaves the source running also raises the Health
				// warning — the three surfaces must end in the same state for
				// the same input. (#189 AC4, AC10)
				if ( $imported_something ) {
					$label = '';
					foreach ( Migration::status() as $s ) {
						if ( $s['id'] === $src ) {
							$label = (string) $s['label'];
							break;
						}
					}
					Migration::remember_active_source( $src, $label );
				}

				\WP_CLI::success( 'Import complete.' );
				return;
			default:
				// Without this, an unrecognised action fell out of the switch
				// and returned success with no output — indistinguishable from
				// "ran fine, nothing to report", and ok:true over MCP.
				\WP_CLI::error(
					sprintf(
						'Unknown action "%s". Expected: status | preview --source=<id> | apply --source=<id>.',
						$action
					)
				);
		}
	}
}

```