<?php

namespace addons\shopro\service\partner;

use app\admin\model\shopro\partner\VoucherPlan;
use app\admin\model\shopro\partner\Reward as RewardModel;
use app\admin\model\shopro\commission\Agent as AgentModel;

/**
 * 兑换券 1.5 倍 / 365 天释放
 */
class VoucherService
{
    public function available($userId)
    {
        $agent = AgentModel::where('user_id', $userId)->find();
        if (!$agent) {
            return 0;
        }
        return max(0, round((float) $agent->voucher_released - (float) $agent->voucher_used, 2));
    }

    public function consume($userId, $amount, $orderId = 0)
    {
        $amount = round((float) $amount, 2);
        if ($amount <= 0) {
            return true;
        }
        $agent = AgentModel::where('user_id', $userId)->lock(true)->find();
        if (!$agent) {
            error_stop('兑换券账户不存在');
        }
        $available = max(0, round((float) $agent->voucher_released - (float) $agent->voucher_used, 2));
        if (bccomp((string) $available, (string) $amount, 2) < 0) {
            error_stop('兑换券可用额度不足');
        }
        $agent->setInc('voucher_used', $amount);

        PartnerRewardService::write([
            'order_id' => $orderId,
            'buyer_id' => $userId,
            'user_id' => $userId,
            'role' => 'taster',
            'reward_type' => 'voucher_consume',
            'amount' => -$amount,
            'base_amount' => $amount,
            'ext' => ['formula' => "订单抵扣兑换券 {$amount}", 'order_id' => $orderId],
            'status' => 1,
        ]);
        return true;
    }

    public function refundConsume($order, $refundFee = null)
    {
        $ext = $order['ext'] ?? [];
        if (is_string($ext)) {
            $ext = json_decode($ext, true) ?: [];
        }
        $totalVoucher = round((float) ($ext['voucher_fee'] ?? 0), 2);
        if ($totalVoucher <= 0 || empty($ext['voucher_consumed'])) {
            return;
        }
        $fee = $refundFee !== null ? min($totalVoucher, round((float) $refundFee, 2)) : $totalVoucher;
        if ($fee <= 0) {
            return;
        }
        $userId = intval($order['user_id'] ?? 0);
        $orderId = intval($order['id'] ?? 0);
        $agent = AgentModel::where('user_id', $userId)->lock(true)->find();
        if ($agent) {
            $agent->voucher_used = max(0, round((float) $agent->voucher_used - $fee, 2));
            $agent->save();

            PartnerRewardService::write([
                'order_id' => $orderId,
                'buyer_id' => $userId,
                'user_id' => $userId,
                'role' => 'taster',
                'reward_type' => 'voucher_consume_refund',
                'amount' => $fee,
                'base_amount' => $fee,
                'ext' => ['formula' => "订单退款退回兑换券 {$fee}", 'order_id' => $orderId],
                'status' => 1,
            ]);
        }
    }

    public function consumeByOrder($order)
    {
        $ext = $order['ext'] ?? [];
        if (is_string($ext)) {
            $ext = json_decode($ext, true) ?: [];
        }
        $fee = round((float) ($ext['voucher_fee'] ?? 0), 2);
        if ($fee <= 0 || !empty($ext['voucher_consumed'])) {
            return;
        }
        $this->consume(intval($order['user_id']), $fee, intval($order['id'] ?? 0));
        if (is_object($order) && method_exists($order, 'save')) {
            $ext['voucher_consumed'] = 1;
            $order->ext = $ext;
            $order->save();
        }
    }

    public function grant($order, $buyerId)
    {
        $exists = VoucherPlan::where('order_id', $order['id'])->find();
        if ($exists) {
            return $exists;
        }

        $times = (float) PartnerConfig::get('partner_voucher_times', 1.5);
        $days = intval(PartnerConfig::get('partner_voucher_days', 365));
        $days = $days > 0 ? $days : 365;
        $total = round((float) $order['pay_fee'] * $times, 2);
        if ($total <= 0) {
            return null;
        }
        $daily = round($total / $days, 2);
        $startDate = date('Y-m-d', strtotime('+1 day', $this->orderTime($order)));

        $plan = VoucherPlan::create([
            'user_id' => $buyerId,
            'order_id' => $order['id'],
            'total_amount' => $total,
            'daily_amount' => $daily,
            'released_amount' => 0,
            'released_days' => 0,
            'total_days' => $days,
            'start_date' => $startDate,
            'status' => 1,
            'createtime' => time(),
        ]);

        $agent = AgentModel::where('user_id', $buyerId)->find();
        if ($agent) {
            $agent->setInc('voucher_total', $total);
        }

        PartnerRewardService::write([
            'order_id' => $order['id'],
            'buyer_id' => $buyerId,
            'user_id' => $buyerId,
            'role' => 'taster',
            'reward_type' => 'voucher_grant',
            'amount' => 0,
            'base_amount' => $total,
            'ext' => ['formula' => "实付{$order['pay_fee']} × {$times} = {$total}，{$days}天释放"],
            'status' => 1,
        ]);

        return $plan;
    }

    public function releaseByDate($settleDate)
    {
        $plans = VoucherPlan::where('status', 1)
            ->where('start_date', '<=', $settleDate)
            ->select();
        $byUser = [];
        foreach ($plans as $plan) {
            $amount = $this->releaseOne($plan, $settleDate);
            if ($amount <= 0) {
                continue;
            }
            $uid = intval($plan->user_id);
            if (!isset($byUser[$uid])) {
                $byUser[$uid] = ['amount' => 0, 'plans' => []];
            }
            $byUser[$uid]['amount'] = bcadd((string) $byUser[$uid]['amount'], (string) $amount, 2);
            $byUser[$uid]['plans'][] = $plan->id;
        }
        $totalReleased = 0;
        foreach ($byUser as $userId => $info) {
            PartnerRewardService::write([
                'order_id' => PartnerRewardService::dailyOrderId($settleDate),
                'buyer_id' => $userId,
                'user_id' => $userId,
                'role' => 'taster',
                'reward_type' => 'voucher_release',
                'amount' => $info['amount'],
                'base_amount' => $info['amount'],
                'settle_date' => $settleDate,
                'ext' => [
                    'formula' => "兑换券释放 {$info['amount']}",
                    'plan_ids' => $info['plans'],
                ],
                'status' => 1,
            ]);
            $totalReleased = bcadd((string) $totalReleased, (string) $info['amount'], 2);
        }
        return (float) $totalReleased;
    }

    public function releaseOne($plan, $settleDate)
    {
        if ($plan->status != 1) {
            return 0;
        }
        if ($plan->released_days >= $plan->total_days) {
            $plan->status = 2;
            $plan->save();
            return 0;
        }
        if ($plan->start_date > $settleDate) {
            return 0;
        }

        $leftDays = $plan->total_days - $plan->released_days;
        if ($leftDays <= 1) {
            $amount = round((float) $plan->total_amount - (float) $plan->released_amount, 2);
            $plan->status = 2;
        } else {
            $amount = (float) $plan->daily_amount;
        }
        if ($amount <= 0) {
            $plan->status = 2;
            $plan->save();
            return 0;
        }

        $plan->released_amount = round((float) $plan->released_amount + $amount, 2);
        $plan->released_days += 1;
        $plan->save();

        $agent = AgentModel::where('user_id', $plan->user_id)->find();
        if ($agent) {
            $agent->setInc('voucher_released', $amount);
        }

        return $amount;
    }

    public function closeByOrder($orderId)
    {
        $plan = VoucherPlan::where('order_id', $orderId)->find();
        if (!$plan || $plan->status == 0) {
            return;
        }
        $plan->status = 0;
        $plan->save();

        $agent = AgentModel::where('user_id', $plan->user_id)->lock(true)->find();
        if ($agent) {
            $releasedAmount = round((float) $plan->released_amount, 2);
            $totalAmount = round((float) $plan->total_amount, 2);
            $currentReleased = round((float) $agent->voucher_released, 2);
            $currentUsed = round((float) $agent->voucher_used, 2);

            $newTotal = max(0, round((float) $agent->voucher_total - $totalAmount, 2));
            $newReleased = max(0, round($currentReleased - $releasedAmount, 2));

            $overdraft = 0;
            if ($newReleased < $currentUsed) {
                $overdraft = round($currentUsed - $newReleased, 2);
                $newReleased = $currentUsed;
            }

            $agent->voucher_released = $newReleased;
            $agent->voucher_total = $newTotal;
            $agent->save();

            if ($overdraft > 0) {
                \think\Log::record("[VoucherService] 订单 {$orderId} 退款关闭计划，用户 {$agent->user_id} 已透支兑换券额度: {$overdraft}", 'warning');
            }
        }
    }

    public function reduceByRefund($orderId, $refundItemFee)
    {
        $plan = VoucherPlan::where('order_id', $orderId)->find();
        if (!$plan || $plan->status == 0) {
            return;
        }
        $times = (float) PartnerConfig::get('partner_voucher_times', 1.5);
        $reduceTotal = round((float) $refundItemFee * $times, 2);
        if ($reduceTotal <= 0) {
            return;
        }

        $reduceTotal = min($reduceTotal, (float) $plan->total_amount);
        $plan->total_amount = max(0, round((float) $plan->total_amount - $reduceTotal, 2));
        $leftDays = max(1, $plan->total_days - $plan->released_days);
        $plan->daily_amount = round(($plan->total_amount - $plan->released_amount) / $leftDays, 2);
        if ($plan->total_amount <= $plan->released_amount) {
            $plan->status = 2;
        }
        $plan->save();

        $agent = AgentModel::where('user_id', $plan->user_id)->lock(true)->find();
        if ($agent) {
            $agent->voucher_total = max(0, round((float) $agent->voucher_total - $reduceTotal, 2));
            $agent->save();
        }
    }

    public function rollbackRelease($settleDate)
    {
        $rows = RewardModel::where('settle_date', $settleDate)
            ->where('reward_type', 'voucher_release')
            ->where('status', 1)
            ->select();
        foreach ($rows as $row) {
            $planIds = $row->ext['plan_ids'] ?? [];
            if (!$planIds && !empty($row->ext['plan_id'])) {
                $planIds = [$row->ext['plan_id']];
            }
            foreach ($planIds as $planId) {
                $plan = VoucherPlan::get($planId);
                if (!$plan) {
                    continue;
                }
                $daily = (float) $plan->daily_amount;
                $plan->released_amount = max(0, (float) $plan->released_amount - $daily);
                $plan->released_days = max(0, $plan->released_days - 1);
                if ($plan->status == 2 && $plan->released_days < $plan->total_days) {
                    $plan->status = 1;
                }
                $plan->save();
            }
            $agent = AgentModel::where('user_id', $row->user_id)->find();
            if ($agent) {
                $agent->voucher_released = max(0, (float) $agent->voucher_released - (float) $row->amount);
                $agent->save();
            }
        }
    }

    protected function orderTime($order)
    {
        $paid = $order['paid_time'] ?? 0;
        if (is_numeric($paid) && $paid > 0) {
            return intval($paid);
        }
        if (is_string($paid) && $paid !== '') {
            $ts = strtotime($paid);
            if ($ts) {
                return $ts;
            }
        }
        return time();
    }

    protected function dailyOrderId($settleDate, $planId)
    {
        // 避免 uk_order_user_type 日结撞车：负日期 + 计划尾巴
        return -intval(date('Ymd', strtotime($settleDate))) * 100 + intval($planId) % 100;
    }
}