<?php

namespace App\Module\AppGame\Handler\Promotion;

use App\Module\AppGame\Handler\BaseHandler;
use App\Module\UrsPromotion\Services\UrsUserMappingService;
use App\Module\UrsPromotion\Services\UrsReferralService;
use App\Module\User\Services\UserService;
use App\Module\Fund\Services\AccountService;
use App\Module\Fund\Enums\FUND_TYPE;
use App\Module\Farm\Models\FarmUser;
use Google\Protobuf\Internal\Message;
use Illuminate\Support\Facades\Log;
use Uraus\Kku\Request\RequestPromotionList;
use Uraus\Kku\Response\ResponsePromotionList;
use Uraus\Kku\Response\PromotionListItem;
use Uraus\Kku\Common\ResponsePage;

/**
 * 处理推广团队成员列表请求
 * 
 * 获取用户的推广团队成员列表，支持分页和等级筛选
 * 只返回已进入农场的用户数据
 */
class ListHandler extends BaseHandler
{
    /**
     * 是否需要登录
     * @var bool
     */
    protected bool $need_login = true;

    /**
     * 处理推广团队成员列表请求
     *
     * @param RequestPromotionList $data 推广团队成员列表请求数据
     * @return ResponsePromotionList 推广团队成员列表响应
     */
    public function handle(Message $data): Message
    {
        // 创建响应对象
        $response = new ResponsePromotionList();

        try {
            // 更新用户活动时间
            $this->updateUserActivityTime();

            // 获取请求参数
            $page = $data->getPage();
            $level = $data->getLevel(); // 等级筛选：0=全部，1=直推，2=间推，3=三推
            
            $pageNum = $page ? $page->getPage() : 1;
            $pageSize = $page ? $page->getPerPage() : 20;
            
            // 限制分页参数
            $pageNum = max(1, $pageNum);
            $pageSize = min(100, max(1, $pageSize)); // 最大100条

            // 获取当前农场用户对应的URS用户ID
            $ursUserId = UrsUserMappingService::getUrsUserId($this->user_id);
            if (!$ursUserId) {
                // 用户未进入URS推广系统，返回空列表
                Log::info('用户未进入URS推广系统', [
                    'user_id' => $this->user_id
                ]);
                return $this->setEmptyResponse($response, $pageNum, $pageSize);
            }

            // 获取团队成员数据
            $teamData = $this->getTeamMemberData($ursUserId, $level, $pageNum, $pageSize);
            
            // 设置分页信息
            $responsePage = new ResponsePage();
            $responsePage->setCurrentPage($pageNum);
            $responsePage->setPerPage($pageSize);
            $responsePage->setTotal($teamData['total']);
            $responsePage->setLastPage(ceil($teamData['total'] / $pageSize));
            $responsePage->setHasMore($pageNum < ceil($teamData['total'] / $pageSize));
            $response->setPage($responsePage);
            
            // 设置列表数据
            $response->setList($teamData['list']);

            Log::info('推广团队成员列表获取成功', [
                'user_id' => $this->user_id,
                'urs_user_id' => $ursUserId,
                'level' => $level,
                'page' => $pageNum,
                'size' => $pageSize,
                'total' => $teamData['total']
            ]);

        } catch (\Exception $e) {
            Log::error('获取推广团队成员列表失败', [
                'user_id' => $this->user_id,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);
            
            // 发生错误时返回空列表
            return $this->setEmptyResponse($response, $pageNum ?? 1, $pageSize ?? 20);
        }

        return $response;
    }

    /**
     * 设置空响应数据
     *
     * @param ResponsePromotionList $response
     * @param int $pageNum
     * @param int $pageSize
     * @return ResponsePromotionList
     */
    private function setEmptyResponse(ResponsePromotionList $response, int $pageNum, int $pageSize): ResponsePromotionList
    {
        $responsePage = new ResponsePage();
        $responsePage->setCurrentPage($pageNum);
        $responsePage->setPerPage($pageSize);
        $responsePage->setTotal(0);
        $responsePage->setLastPage(0);
        $responsePage->setHasMore(false);
        $response->setPage($responsePage);
        $response->setList([]);

        return $response;
    }

    /**
     * 获取团队成员数据
     *
     * @param int $ursUserId URS用户ID
     * @param int $level 等级筛选
     * @param int $pageNum 页码
     * @param int $pageSize 每页大小
     * @return array
     */
    private function getTeamMemberData(int $ursUserId, int $level, int $pageNum, int $pageSize): array
    {
        try {
            // 获取团队成员
            $teamMembers = UrsReferralService::getTeamMembers($ursUserId);
            
            // 根据等级筛选
            $filteredMembers = [];
            if ($level == 0) {
                // 全部等级
                foreach ([1, 2, 3] as $lvl) {
                    if (!empty($teamMembers[$lvl])) {
                        foreach ($teamMembers[$lvl] as $member) {
                            $filteredMembers[] = ['urs_user_id' => $member, 'level' => $lvl];
                        }
                    }
                }
            } else {
                // 指定等级
                if (!empty($teamMembers[$level])) {
                    foreach ($teamMembers[$level] as $member) {
                        $filteredMembers[] = ['urs_user_id' => $member, 'level' => $level];
                    }
                }
            }
            
            // 过滤出已进入农场的用户
            $validMembers = [];
            foreach ($filteredMembers as $member) {
                $farmUserId = UrsUserMappingService::getFarmUserId($member['urs_user_id']);
                if ($farmUserId) {
                    $validMembers[] = [
                        'urs_user_id' => $member['urs_user_id'],
                        'farm_user_id' => $farmUserId,
                        'level' => $member['level']
                    ];
                }
            }
            
            $total = count($validMembers);
            
            // 分页处理
            $offset = ($pageNum - 1) * $pageSize;
            $pagedMembers = array_slice($validMembers, $offset, $pageSize);
            
            // 构建列表项
            $listItems = [];
            foreach ($pagedMembers as $member) {
                $listItem = $this->buildListItem($member['farm_user_id']);
                if ($listItem) {
                    $listItems[] = $listItem;
                }
            }
            
            return [
                'total' => $total,
                'list' => $listItems
            ];
            
        } catch (\Exception $e) {
            Log::error('获取团队成员数据失败', [
                'urs_user_id' => $ursUserId,
                'level' => $level,
                'error' => $e->getMessage()
            ]);

            return [
                'total' => 0,
                'list' => []
            ];
        }
    }

    /**
     * 构建列表项
     *
     * @param int $farmUserId 农场用户ID
     * @return PromotionListItem|null
     */
    private function buildListItem(int $farmUserId): ?PromotionListItem
    {
        try {
            // 获取用户基本信息
            $userInfo = UserService::infoinfo($farmUserId);
            if (!$userInfo) {
                return null;
            }

            // 获取用户钻石余额
            $fund2Balance = 0;
            try {
                $accounts = AccountService::list4user($farmUserId);
                foreach ($accounts as $account) {
                    if ($account->fundId === FUND_TYPE::FUND2->value) {
                        // 直接使用余额值，protobuf的fund2字段是int64
                        $fund2Balance = (int)$account->balance;
                        break;
                    }
                }
            } catch (\Exception $e) {
                Log::warning('获取用户资金信息失败', [
                    'user_id' => $farmUserId,
                    'error' => $e->getMessage()
                ]);
            }

            // 获取用户房屋等级
            $houseLevel = 1; // 默认等级
            try {
                $farmUser = FarmUser::where('user_id', $farmUserId)->first();
                if ($farmUser) {
                    $houseLevel = $farmUser->house_level;
                }
            } catch (\Exception $e) {
                Log::warning('获取用户房屋等级失败', [
                    'user_id' => $farmUserId,
                    'error' => $e->getMessage()
                ]);
            }

            // 创建列表项
            $listItem = new PromotionListItem();
            $listItem->setUserId($farmUserId);
            $listItem->setNickname($userInfo->nickname ?: '用户' . $farmUserId);
            $listItem->setAvatar($userInfo->avatar ?: '');
            $listItem->setFund2($fund2Balance);
            $listItem->setContribution(0); // 贡献值暂时设为0，后续可扩展
            $listItem->setHouseLevel($houseLevel);

            return $listItem;

        } catch (\Exception $e) {
            Log::error('构建列表项失败', [
                'user_id' => $farmUserId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }
}