<?php

if (! function_exists('m3_user')) {
    /**
     * Return the current Core username in the format expected by the legacy M3 data.
     * M3 previously depended on PHP Basic Auth and read PHP_AUTH_USER directly.
     */
    function m3User(): string
    {
        $user = auth()->user();

        $value = $user?->username
            ?? $user?->user_name
            ?? $user?->name
            ?? $user?->email
            ?? request()->server('PHP_AUTH_USER')
            ?? '';

        if (str_contains((string) $value, '@')) {
            $value = strstr((string) $value, '@', true) ?: $value;
        }

        return strtoupper(trim((string) $value));
    }
}

if (! function_exists('m3_legacy_password')) {
    /**
     * Passwords are intentionally unavailable in Core. PostgreSQL access uses
     * Laravel's configured connection and never reuses a user's login password.
     */
    function m3LegacyPassword(): string
    {
        return '';
    }
}