<?php
if ( ! defined( 'ABSPATH' ) ) exit;

class ADECK_Tenant_Config {
    public static function normalize_tenant_context( $tenant = [] ) {
        $tenant = is_array( $tenant ) ? $tenant : [];

        $defaults = [
            'id'           => 'default',
            'slug'         => 'default',
            'origin'       => '',
            'configSource' => 'local',
        ];

        $normalized = array_merge( $defaults, $tenant );

        foreach ( [ 'id', 'slug', 'origin', 'configSource' ] as $key ) {
            $normalized[ $key ] = isset( $normalized[ $key ] ) ? (string) $normalized[ $key ] : '';
        }

        if ( '' === $normalized['id'] ) {
            $normalized['id'] = 'default';
        }

        if ( '' === $normalized['slug'] ) {
            $normalized['slug'] = 'default';
        }

        return $normalized;
    }

    public static function build_storage_namespace( $tenant ) {
        $tenant = self::normalize_tenant_context( $tenant );

        return 'adecksibility:' . $tenant['slug'];
    }

    public static function apply_config_overrides( ADECK_Config $config, $overrides = [] ) {
        if ( ! is_array( $overrides ) || empty( $overrides ) ) {
            return $config;
        }

        $allowed_keys = ADECK_Config_Schema::get_remote_overridable_option_keys();
        $safe_values   = array_intersect_key( $overrides, array_flip( $allowed_keys ) );

        if ( empty( $safe_values ) ) {
            return $config;
        }

        return $config->merge( $safe_values );
    }

    public static function apply_widget_overrides( array $widget_config, $overrides = [] ) {
        if ( ! is_array( $overrides ) || empty( $overrides ) ) {
            return $widget_config;
        }

        if ( isset( $overrides['tenant'] ) ) {
            $widget_config['tenant'] = self::normalize_tenant_context(
                array_merge(
                    isset( $widget_config['tenant'] ) && is_array( $widget_config['tenant'] ) ? $widget_config['tenant'] : [],
                    is_array( $overrides['tenant'] ) ? $overrides['tenant'] : []
                )
            );
            unset( $overrides['tenant'] );
        }

        $widget_config = array_replace_recursive( $widget_config, $overrides );

        if ( isset( $widget_config['tenant'] ) ) {
            $widget_config['tenant'] = self::normalize_tenant_context( $widget_config['tenant'] );
        }

        if ( empty( $widget_config['storageNamespace'] ) && ! empty( $widget_config['tenant'] ) ) {
            $widget_config['storageNamespace'] = self::build_storage_namespace( $widget_config['tenant'] );
        }

        return $widget_config;
    }
}