<?php

namespace App\Services\Agent;

use App\Models\Agent\Agent;
use App\Models\Agent\AgentPlanApplication;
use App\Models\Agent\AgentProfitCommissionProfile;
use App\Models\Agent\AgentSetting;
use Illuminate\Support\Facades\DB;

/** 合营代理申请分成方案（方案由总后台配置），总后台审核通过后立即生效。 */
class AgentPlanApplicationService
{
    public function __construct(
        private AgentProfitCommissionAssignmentService $assignments,
        private AgentWalletService $wallets
    ) {
    }

    public function plans(Agent $agent): array
    {
        $agent->loadMissing('profitCommissionProfile');
        return [
            'current_profile' => $agent->profitCommissionProfile,
            'profit_active' => (int) $agent->profit_active,
            'margin_stop_percent' => (string) AgentSetting::current()->margin_stop_percent,
            'pending_application' => AgentPlanApplication::query()->where('agent_id', $agent->id)
                ->where('status', AgentPlanApplication::STATUS_PENDING)->latest('id')->first(),
            'list' => AgentProfitCommissionProfile::query()->whereNull('owner_agent_id')
                ->orderBy('margin_amount')->orderBy('id')->get(),
        ];
    }

    public function apply(Agent $agent, int $profileId, string $remark = ''): AgentPlanApplication
    {
        return DB::transaction(function () use ($agent, $profileId, $remark) {
            $agent = Agent::query()->lockForUpdate()->findOrFail($agent->id);
            if (!$agent->isJoint()) throw new \RuntimeException('只有合营代理可以申请分成方案');
            $profile = AgentProfitCommissionProfile::query()->whereNull('owner_agent_id')->findOrFail($profileId);
            if ((int) $agent->profit_commission_profile_id === (int) $profile->id) throw new \RuntimeException('已在使用该方案');
            if (AgentPlanApplication::query()->where('agent_id', $agent->id)->where('status', AgentPlanApplication::STATUS_PENDING)->exists()) {
                throw new \RuntimeException('已有待审核的方案申请');
            }
            return AgentPlanApplication::query()->create([
                'agent_id' => $agent->id, 'profile_id' => $profile->id, 'profile_name' => $profile->name,
                'status' => AgentPlanApplication::STATUS_PENDING, 'remark' => trim($remark),
            ]);
        });
    }

    public function paginate(array $params, ?Agent $agent = null): array
    {
        $page = max(1, (int) ($params['page'] ?? 1));
        $limit = min(100, max(1, (int) ($params['limit'] ?? 20)));
        $query = AgentPlanApplication::query()->with(['agent:id,username,real_name,balance,margin_amount', 'profile']);
        if ($agent) $query->where('agent_id', $agent->id);
        if (!empty($params['agent_id'])) $query->where('agent_id', (int) $params['agent_id']);
        if (!empty($params['status'])) $query->where('status', $params['status']);
        if (!empty($params['username'])) {
            $query->whereHas('agent', fn ($q) => $q->where('username', 'like', '%' . $params['username'] . '%'));
        }
        $total = (clone $query)->count();
        $list = $query->orderByDesc('id')->forPage($page, $limit)->get();
        return compact('total', 'page', 'limit', 'list');
    }

    public function audit(int $id, string $status, int $adminId, string $reason = ''): AgentPlanApplication
    {
        return DB::transaction(function () use ($id, $status, $adminId, $reason) {
            $application = AgentPlanApplication::query()->lockForUpdate()->findOrFail($id);
            if ($application->status !== AgentPlanApplication::STATUS_PENDING) throw new \RuntimeException('申请已审核');
            $agent = Agent::query()->lockForUpdate()->findOrFail($application->agent_id);
            if ($status === AgentPlanApplication::STATUS_APPROVED) {
                $profile = AgentProfitCommissionProfile::query()->whereNull('owner_agent_id')->find($application->profile_id);
                if (!$profile) throw new \RuntimeException('方案已删除，请驳回');
                if (!$agent->isJoint()) throw new \RuntimeException('只有合营代理可以使用分成方案');
                $agent->profit_commission_profile_id = $profile->id;
                $agent->save();
                $this->assignments->assign($agent, $profile, $adminId);
                $this->wallets->evaluateActivation($agent, true);
            } else {
                $reason = trim($reason);
                if ($reason === '') throw new \InvalidArgumentException('请填写驳回原因');
                $application->reject_reason = $reason;
            }
            $application->status = $status;
            $application->reviewed_by = $adminId;
            $application->reviewed_at = now();
            $application->save();
            return $application->fresh(['agent:id,username,profit_active', 'profile']);
        });
    }
}