<?php

namespace App\Services\Identity;

use App\Models\User;
use Illuminate\Support\Facades\Http;
use RuntimeException;

/** Resolves a Ladill Transfer user mirror from a platform account public_id. */
class PublicIdUserResolver
{
    public function resolve(string $publicId): User
    {
        $publicId = trim($publicId);
        if ($publicId === '') {
            throw new RuntimeException('User public_id is required.');
        }

        $existing = User::query()->where('public_id', $publicId)->first();
        if ($existing) {
            return $existing;
        }

        $base = rtrim((string) config('identity.api_url'), '/');
        $key = (string) config('identity.api_key');
        if ($base === '' || $key === '') {
            throw new RuntimeException('Identity API is not configured.');
        }

        $res = Http::withToken($key)
            ->acceptJson()
            ->timeout(10)
            ->get("{$base}/identity/profile", ['user' => $publicId]);

        if ($res->failed()) {
            throw new RuntimeException('Could not resolve the Ladill account.');
        }

        $data = $res->json('data');
        if (! is_array($data)) {
            throw new RuntimeException('Could not resolve the Ladill account.');
        }

        $email = trim((string) ($data['email'] ?? ''));
        if ($email === '') {
            $email = 'sms+'.$publicId.'@accounts.ladill.local';
        }

        return User::updateOrCreate(
            ['public_id' => $publicId],
            [
                'name' => trim((string) ($data['name'] ?? '')) ?: 'Ladill user',
                'email' => $email,
            ],
        );
    }
}