breznflow/includes/Admin/views/themes.php

<?php
/**
 * Template: Theme management page.
 *
 * @package BreznFlow
 * @since   1.0.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use BreznFlow\Features\ThemeImporter;
use BreznFlow\Features\ThemeRegistry;

$breznflow_custom_themes = ThemeImporter::get_all();
?>
<div class="wrap breznflow-admin-wrap">
	<h1><?php esc_html_e( 'BreznFlow — Themes', 'breznflow' ); ?></h1>

	<?php if ( isset( $_GET['imported'] ) ) : // phpcs:ignore WordPress.Security.NonceVerification.Recommended ?>
		<div class="notice notice-success is-dismissible">
			<p><?php esc_html_e( 'Theme imported successfully.', 'breznflow' ); ?></p>
		</div>
	<?php endif; ?>

	<?php if ( isset( $_GET['deleted'] ) ) : // phpcs:ignore WordPress.Security.NonceVerification.Recommended ?>
		<div class="notice notice-success is-dismissible">
			<p><?php esc_html_e( 'Theme deleted.', 'breznflow' ); ?></p>
		</div>
	<?php endif; ?>

	<?php if ( isset( $_GET['error'] ) ) : // phpcs:ignore WordPress.Security.NonceVerification.Recommended ?>
		<?php
		$breznflow_error_code = sanitize_key( $_GET['error'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$breznflow_messages   = array(
			'invalid_file'  => __( 'Invalid file type. Please upload a .breznflow.json file.', 'breznflow' ),
			'upload_failed' => __( 'File upload failed. Please try again.', 'breznflow' ),
			'read_failed'   => __( 'Could not read the uploaded file.', 'breznflow' ),
			'invalid_json'  => __( 'File is not valid JSON.', 'breznflow' ),
			'validation'    => isset( $_GET['message'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
				? urldecode( sanitize_text_field( wp_unslash( $_GET['message'] ) ) ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
				: __( 'Theme validation failed.', 'breznflow' ),
		);
		$breznflow_msg        = $breznflow_messages[ $breznflow_error_code ] ?? __( 'An error occurred.', 'breznflow' );
		?>
		<div class="notice notice-error is-dismissible">
			<p><?php echo esc_html( $breznflow_msg ); ?></p>
		</div>
	<?php endif; ?>

	<!-- Import Section -->
	<div class="breznflow-card">
		<h2><?php esc_html_e( 'Import Custom Theme', 'breznflow' ); ?></h2>
		<p class="description">
			<?php esc_html_e( 'Upload a .breznflow.json file containing a valid theme definition. The file must include all 41 color tokens.', 'breznflow' ); ?>
		</p>
		<form method="post" enctype="multipart/form-data" action="<?php echo esc_url( admin_url( 'admin.php?page=breznflow-themes' ) ); ?>">
			<?php wp_nonce_field( 'breznflow_theme_import' ); ?>
			<table class="form-table">
				<tr>
					<th><label for="breznflow_theme_file"><?php esc_html_e( 'Theme File', 'breznflow' ); ?></label></th>
					<td>
						<input type="file" name="breznflow_theme_file" id="breznflow_theme_file" accept=".json,.breznflow.json">
					</td>
				</tr>
			</table>
			<?php submit_button( __( 'Import Theme', 'breznflow' ) ); ?>
		</form>
	</div>

	<!-- Built-in Themes -->
	<div class="breznflow-card">
		<h2><?php esc_html_e( 'Built-in Themes', 'breznflow' ); ?></h2>
		<table class="wp-list-table widefat striped">
			<thead>
				<tr>
					<th><?php esc_html_e( 'Name', 'breznflow' ); ?></th>
					<th><?php esc_html_e( 'ID', 'breznflow' ); ?></th>
					<th><?php esc_html_e( 'Type', 'breznflow' ); ?></th>
				</tr>
			</thead>
			<tbody>
				<?php foreach ( ThemeRegistry::BUILTIN as $breznflow_theme_id => $breznflow_theme_name ) : ?>
					<tr>
						<td><?php echo esc_html( $breznflow_theme_name ); ?></td>
						<td><code><?php echo esc_html( $breznflow_theme_id ); ?></code></td>
						<td><?php esc_html_e( 'Built-in', 'breznflow' ); ?></td>
					</tr>
				<?php endforeach; ?>
			</tbody>
		</table>
		<p class="description">
			<?php esc_html_e( 'Built-in themes are read-only and updated with the plugin.', 'breznflow' ); ?>
		</p>
	</div>

	<!-- Custom Themes -->
	<div class="breznflow-card">
		<h2><?php esc_html_e( 'Custom Themes', 'breznflow' ); ?></h2>
		<?php if ( empty( $breznflow_custom_themes ) ) : ?>
			<p class="description"><?php esc_html_e( 'No custom themes imported yet.', 'breznflow' ); ?></p>
		<?php else : ?>
			<table class="wp-list-table widefat striped">
				<thead>
					<tr>
						<th><?php esc_html_e( 'Name', 'breznflow' ); ?></th>
						<th><?php esc_html_e( 'ID', 'breznflow' ); ?></th>
						<th><?php esc_html_e( 'Version', 'breznflow' ); ?></th>
						<th><?php esc_html_e( 'Actions', 'breznflow' ); ?></th>
					</tr>
				</thead>
				<tbody>
					<?php foreach ( $breznflow_custom_themes as $breznflow_theme ) : ?>
						<tr>
							<td><?php echo esc_html( $breznflow_theme['name'] ); ?></td>
							<td><code><?php echo esc_html( $breznflow_theme['id'] ); ?></code></td>
							<td><?php echo esc_html( (string) $breznflow_theme['version'] ); ?></td>
							<td>
								<a href="
								<?php
								echo esc_url(
									wp_nonce_url(
										add_query_arg(
											array(
												'page'     => 'breznflow-themes',
												'action'   => 'delete_theme',
												'theme_id' => $breznflow_theme['id'],
											),
											admin_url( 'admin.php' )
										),
										'breznflow_theme_delete_' . $breznflow_theme['id']
									)
								);
								?>
								"
								onclick="return confirm('<?php echo esc_js( __( 'Delete this theme?', 'breznflow' ) ); ?>');"
								class="submitdelete">
									<?php esc_html_e( 'Delete', 'breznflow' ); ?>
								</a>
							</td>
						</tr>
					<?php endforeach; ?>
				</tbody>
			</table>
		<?php endif; ?>
	</div>
</div>