<?php

namespace App\Http\Controllers\agent;

use App\Http\Controllers\AgentApiController;
use App\Services\Agent\AgentDomainService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Models\User;
use Carbon\Carbon;

class ReferralController extends AgentApiController
{
    public function resolve(Request $request, AgentDomainService $domains)
    {
        return $this->execute(function () use ($request, $domains) {
            $data = $request->validate([
                'agent_code' => ['nullable', 'string', 'max:32', 'required_without:domain'],
                'domain' => ['nullable', 'string', 'max:255', 'required_without:agent_code'],
            ]);
            $agent = $domains->resolve($data['agent_code'] ?? null, $data['domain'] ?? null);
            if (!$agent) throw new \RuntimeException('代理推广信息不存在或已禁用');
            return [
                'agent_id' => (int) $agent->id,
                'agent_code' => $agent->invitation_code,
                'agent_name' => $agent->username,
            ];
        });
    }

    public function bind(Request $request, AgentDomainService $domains)
    {
        return $this->execute(function () use ($request, $domains) {
            $data = $request->validate([
                'agent_code' => ['nullable', 'string', 'max:32', 'required_without:domain'],
                'domain' => ['nullable', 'string', 'max:255', 'required_without:agent_code'],
            ]);
            $agent = $domains->resolve($data['agent_code'] ?? null, $data['domain'] ?? null);
            if (!$agent) {
                throw new \RuntimeException('代理推广信息不存在或已禁用');
            }
            return DB::transaction(function () use ($request, $agent) {
                $user = User::query()->lockForUpdate()->findOrFail($request->user->id);
                if ($user->agent_id !== null && (int) $user->agent_id !== (int) $agent->id) {
                    throw new \RuntimeException('会员已绑定其他代理，不能重复修改');
                }
                if ($user->agent_id !== null) {
                    return ['user_id' => (int) $user->id, 'agent_id' => (int) $agent->id];
                }
                $createdAt = $user->getRawOriginal('created_at');
                if (!$createdAt || Carbon::parse($createdAt)->lt(now()->subMinutes(config('agent.referral_bind_minutes', 30)))) {
                    throw new \RuntimeException('推广归属只能在新会员注册后及时绑定');
                }
                $user->agent_id = $agent->id;
                $user->save();
                return ['user_id' => (int) $user->id, 'agent_id' => (int) $agent->id];
            });
        });
    }
}