<?php

namespace plugin\saiadmin\app\logic\user;

use DateTimeImmutable;
use plugin\saiadmin\app\service\user\WechatPayComplaintService;
use plugin\saiadmin\basic\think\BaseLogic;
use plugin\saiadmin\exception\ApiException;
use support\think\Db;

/** 微信支付用户投诉查询与处理。 */
class UserComplaintLogic extends BaseLogic
{
    private WechatPayComplaintService $wechat;

    public function __construct(?WechatPayComplaintService $wechat = null)
    {
        $this->wechat = $wechat ?? new WechatPayComplaintService();
    }

    public function configOptions(): array
    {
        return $this->configQuery()
            ->field('id,partner_id,mini_program_name,appid,mchid')
            ->order('id', 'asc')
            ->select()
            ->toArray();
    }

    public function indexList(array $filters): array
    {
        $config = $this->resolveConfig((int) ($filters['config_id'] ?? 0));
        [$startDate, $endDate] = $this->dateRange(
            (string) ($filters['start_date'] ?? ''),
            (string) ($filters['end_date'] ?? '')
        );
        $page = max(1, (int) request()->input('page', 1));
        $limit = min(50, max(1, (int) request()->input('limit', 20)));
        $result = $this->wechat->complaints($config, [
            'begin_date' => $startDate,
            'end_date' => $endDate,
            'limit' => $limit,
            'offset' => ($page - 1) * $limit,
        ]);
        $rows = array_map(fn (array $row): array => $this->formatComplaint($row), $result['data'] ?? []);
        $this->appendRefundRemarks($rows);
        return [
            'data' => $rows,
            'total' => (int) ($result['total_count'] ?? count($rows)),
            'current_page' => $page,
            'per_page' => $limit,
            'config' => $this->publicConfig($config),
        ];
    }

    public function detail(int $configId, string $complaintId): array
    {
        $complaintId = $this->complaintId($complaintId);
        $config = $this->resolveConfig($configId);
        $result = $this->wechat->detail($config, $complaintId);
        if (!empty($result['payer_phone'])) {
            $result['payer_phone'] = $this->wechat->decryptSensitive(
                (string) $result['payer_phone'],
                (string) $config['apiclient_key']
            );
        }
        return $this->formatComplaint($result);
    }

    public function history(int $configId, string $complaintId): array
    {
        $config = $this->resolveConfig($configId);
        $result = $this->wechat->history($config, $this->complaintId($complaintId));
        return array_map(function (array $item): array {
            $item['complaint_media_list'] = array_values((array) ($item['complaint_media_list'] ?? []));
            return $item;
        }, $result['data'] ?? []);
    }

    public function reply(array $data): array
    {
        $content = trim((string) ($data['content'] ?? ''));
        if ($content === '' || mb_strlen($content) > 200) {
            throw new ApiException('回复内容不能为空且不能超过 200 个字');
        }
        $config = $this->resolveConfig((int) ($data['config_id'] ?? 0));
        $this->wechat->reply($config, $this->complaintId((string) ($data['complaint_id'] ?? '')), $content);
        return [];
    }

    public function complete(array $data): array
    {
        $config = $this->resolveConfig((int) ($data['config_id'] ?? 0));
        $this->wechat->complete($config, $this->complaintId((string) ($data['complaint_id'] ?? '')));
        return [];
    }

    private function configQuery()
    {
        $query = Db::table('sa_wechat_mini_program')->whereNull('delete_time');
        if (!$this->isSuperAdmin()) {
            $query->where('partner_id', $this->currentAdminId());
        }
        return $query;
    }

    private function resolveConfig(int $configId): array
    {
        $query = $this->configQuery();
        if ($configId > 0) {
            $query->where('id', $configId);
        }
        $config = $query->order('id', 'asc')->find();
        if (!$config) {
            throw new ApiException($configId > 0 ? '微信小程序配置不存在或无权访问' : '请先绑定微信小程序并完善微信支付配置');
        }
        return $config;
    }

    /** @return array{0:string,1:string} */
    private function dateRange(string $startDate, string $endDate): array
    {
        if ($startDate === '' || $endDate === '') {
            throw new ApiException('请选择投诉查询日期范围');
        }
        $start = DateTimeImmutable::createFromFormat('!Y-m-d', $startDate);
        $end = DateTimeImmutable::createFromFormat('!Y-m-d', $endDate);
        if (!$start || !$end || $start->format('Y-m-d') !== $startDate || $end->format('Y-m-d') !== $endDate) {
            throw new ApiException('投诉查询日期格式错误');
        }
        if ($start > $end) {
            throw new ApiException('开始日期不能晚于结束日期');
        }
        if ((int) $start->diff($end)->days > 30) {
            throw new ApiException('单次最多查询连续 31 天的投诉记录');
        }
        return [$startDate, $endDate];
    }

    private function complaintId(string $complaintId): string
    {
        $complaintId = trim($complaintId);
        if ($complaintId === '' || mb_strlen($complaintId) > 64) {
            throw new ApiException('投诉单号错误');
        }
        return $complaintId;
    }

    private function formatComplaint(array $row): array
    {
        $orders = [];
        foreach ((array) ($row['complaint_order_info'] ?? []) as $order) {
            if (!is_array($order)) {
                continue;
            }
            if (isset($order['amount'])) {
                $order['amount'] = round(((float) $order['amount']) / 100, 2);
            }
            $orders[] = $order;
        }
        $row['complaint_order_info'] = $orders;
        $row['complaint_media_list'] = array_values((array) ($row['complaint_media_list'] ?? []));
        $row['refund_remark'] = (string) ($row['refund_remark'] ?? '');
        return $row;
    }

    private function appendRefundRemarks(array &$rows): void
    {
        $transactionIds = [];
        foreach ($rows as $row) {
            foreach ($row['complaint_order_info'] ?? [] as $order) {
                if (!empty($order['transaction_id'])) {
                    $transactionIds[] = (string) $order['transaction_id'];
                }
            }
        }
        $transactionIds = array_values(array_unique($transactionIds));
        if ($transactionIds === []) {
            return;
        }
        $orders = Db::table('sa_rental_order')->whereIn('transaction_id', $transactionIds)
            ->whereNull('delete_time')->field('transaction_id,refund_amount,remark')->select()->toArray();
        $map = [];
        foreach ($orders as $order) {
            if ((float) ($order['refund_amount'] ?? 0) > 0 || trim((string) ($order['remark'] ?? '')) !== '') {
                $map[(string) $order['transaction_id']] = (string) (($order['remark'] ?? '') ?: '已退款');
            }
        }
        foreach ($rows as &$row) {
            foreach ($row['complaint_order_info'] ?? [] as $order) {
                $transactionId = (string) ($order['transaction_id'] ?? '');
                if (isset($map[$transactionId])) {
                    $row['refund_remark'] = $map[$transactionId];
                    break;
                }
            }
        }
        unset($row);
    }

    private function publicConfig(array $config): array
    {
        return [
            'id' => (int) $config['id'],
            'mini_program_name' => (string) $config['mini_program_name'],
            'appid' => (string) $config['appid'],
            'mchid' => (string) $config['mchid'],
        ];
    }

    private function currentAdminId(): int
    {
        return (int) ($this->adminInfo['id'] ?? 0);
    }

    private function isSuperAdmin(): bool
    {
        return $this->currentAdminId() === 1 || (int) ($this->adminInfo['is_super'] ?? 0) === 1;
    }
}