<?php

namespace Advanced_Columns\Settings;

use Advanced_Columns\Core;
use Advanced_Columns\Helpers\Queries;
use Advanced_Columns\Settings\Support\SettingsContext;

class SettingsProvider {

	private array $defaults       = array();
	private array $presetBindings = array();

	public function __construct() {
		add_action( 'admin_enqueue_scripts', array( $this, 'provide' ) );
		add_action( 'wp_loaded', array( $this, 'handleMigrations' ) );
	}

	/**
	 * Set the default settings.
	 *
	 * @since 1.0.0
	 * @param array $defaults The defaults array.
	 */
	public function setDefaults( array $defaults ) {
		$this->defaults = $defaults;
	}

	/**
	 * Set the preset bindings.
	 *
	 * @since 1.0.19
	 * @param array $defaults The preset bindings array.
	 */
	public function setPresetBindings( array $bindings ) {
		$this->presetBindings = $bindings;
	}

	public function mergeDefaults( array $settings ): array {
		$defaults = json_decode( wp_json_encode( $this->defaults ), true );

		foreach ( $defaults[ 'options' ] as $key => $values ) {
			if ( ! isset( $settings[ 'options' ][ $key ] ) ) {
				$settings[ 'options' ][ $key ] = $defaults[ 'options' ][ $key ];
			}
		}

		if ( ! isset( $settings[ 'queries' ] ) ) {
			$settings[ 'queries' ] = $defaults[ 'queries' ];
		}

		if ( false === Core::instance()->isPro() ) {
			$settings[ 'options' ][ 'queriesMode' ] = 'desktopFirst';
		}

		return $settings;
	}

	/**
	 * Get the plugin settings.
	 *
	 * @since 1.0.0
	 * @return object
	 */
	public function get(): object {
		$settings = \get_option( 'advanced_columns' );
		$settings = json_decode( wp_json_encode( $settings ), true );
		$settings = $this->mergeDefaults( $settings );
		$settings = json_decode( wp_json_encode( $settings ), false );

		$settings->queries = Queries::getFromSettings( $settings->queries, $settings );
		$settings->context = $this->contextData();

		return $settings;
	}

	/**
	 * Context data provided to the Editor.
	 *
	 * @since 1.0.16
	 * @return array
	 */
	private function contextData(): array {
		$settingsContext = new SettingsContext();

		$contextData = array(
			'version'      => ADVANCED_COLUMNS_VERSION,
			'url'          => ADVANCED_COLUMNS_URL,
			'pro'          => Core::instance()->isPro(),
			'globalStyles' => $settingsContext->getStyles(),
			'spacingSizes' => $settingsContext->getSpacingSizes(),
			'customData'   => $settingsContext->getCustomData(),
			'presets'      => array(),
		);

		foreach ( $this->presetBindings as $fieldName => $presetHandler ) {
			$contextData[ 'presets' ][ $fieldName ] = array(
				'default'         => $presetHandler::$default,
				'newQueryDefault' => $presetHandler::$newQueryDefault,
			);
		}

		return $contextData;
	}

	/**
	 * Expose the plugin settings to the Block Editor.
	 *
	 * @since 1.0.0
	 */
	public function provide() {
		wp_register_script( 'advanced-columns-dummy-header', '' );
		wp_enqueue_script( 'advanced-columns-dummy-header' );
		wp_localize_script( 'advanced-columns-dummy-header', 'advancedColumnsSettings', (array) $this->get() );
		wp_localize_script( 'wp-editor', 'advancedColumnsSettings', (array) $this->get() );
	}

	/**
	 * Handle data migrations.
	 *
	 * @since 1.0.14
	 */
	public function handleMigrations() {
		$settings        = get_option( 'advanced_columns' );
		$previousVersion = get_option( 'advanced_columns_version' );

		if ( false === $settings || is_string( $settings ) ) {
			$settings = array();
		} elseif ( is_object( $settings ) ) {
			$settings = json_decode( json_encode( $settings ), true );
		}

		if ( ! $previousVersion ) {
			$previousVersion = '0.0.1';
		}

		$migrator = ( new SettingsMigrator() )->from( $previousVersion )->to( ADVANCED_COLUMNS_VERSION );
		$migrator->setData( $settings );
		$migrator->setMigrations( require_once __DIR__ . '/migrations/migrations.php' );
		$migrator->migrate();

		update_option( 'advanced_columns', $migrator->getData() );
		update_option( 'advanced_columns_version', ADVANCED_COLUMNS_VERSION, false );
	}

}