package com.cyksj.service.chatgpt.impl;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cyksj.common.exception.BusinessRuntimeException;
import com.cyksj.mapper.GptTeamAccountMapper;
import com.cyksj.model.entity.GptTeamAccount;
import com.cyksj.service.chatgpt.GptTeamAccountService;
import com.ejlchina.searcher.BeanSearcher;
import com.ejlchina.searcher.SearchResult;
import com.ejlchina.searcher.util.MapUtils;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * GPT Team账号 Service实现
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class GptTeamAccountServiceImpl extends ServiceImpl<GptTeamAccountMapper, GptTeamAccount> implements GptTeamAccountService {

    private final BeanSearcher beanSearcher;
    private final HttpServletRequest request;

    @Override
    public SearchResult<GptTeamAccount> getPage() {
        return beanSearcher.search(GptTeamAccount.class, MapUtils.flatBuilder(request.getParameterMap())
                .orderBy(GptTeamAccount::getId).desc()
                .build());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void addAccount(GptTeamAccount account) {
        // 验证token唯一性
        if (StrUtil.isNotBlank(account.getToken())) {
            Integer count = baseMapper.selectCount(Wrappers.lambdaQuery(GptTeamAccount.class)
                    .eq(GptTeamAccount::getToken, account.getToken()));
            if (count > 0) {
                throw BusinessRuntimeException.getInstance("Token已存在");
            }
        }

        // 验证账号唯一性
        if (StrUtil.isNotBlank(account.getAccount())) {
            Integer count = baseMapper.selectCount(Wrappers.lambdaQuery(GptTeamAccount.class)
                    .eq(GptTeamAccount::getAccount, account.getAccount()));
            if (count > 0) {
                throw BusinessRuntimeException.getInstance("账号已存在");
            }
        }

        this.save(account);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateAccount(GptTeamAccount account) {
        if (account.getId() == null) {
            throw BusinessRuntimeException.getInstance("ID不能为空");
        }

        // 验证token唯一性
        if (StrUtil.isNotBlank(account.getToken())) {
            Integer count = baseMapper.selectCount(Wrappers.lambdaQuery(GptTeamAccount.class)
                    .eq(GptTeamAccount::getToken, account.getToken())
                    .ne(GptTeamAccount::getId, account.getId()));
            if (count > 0) {
                throw BusinessRuntimeException.getInstance("Token已存在");
            }
        }

        // 验证账号唯一性
        if (StrUtil.isNotBlank(account.getAccount())) {
            Integer count = baseMapper.selectCount(Wrappers.lambdaQuery(GptTeamAccount.class)
                    .eq(GptTeamAccount::getAccount, account.getAccount())
                    .ne(GptTeamAccount::getId, account.getId()));
            if (count > 0) {
                throw BusinessRuntimeException.getInstance("账号已存在");
            }
        }

        this.updateById(account);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteAccount(Long id) {
        if (id == null) {
            throw BusinessRuntimeException.getInstance("ID不能为空");
        }
        this.removeById(id);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void batchImport(List<String> tokens) {
        if (CollUtil.isEmpty(tokens)) {
            throw BusinessRuntimeException.getInstance("导入数据不能为空");
        }

        // 去重
        Set<String> tokenSet = new HashSet<>(tokens);
        
        // 过滤空白token
        tokenSet.removeIf(StrUtil::isBlank);
        
        if (tokenSet.isEmpty()) {
            throw BusinessRuntimeException.getInstance("有效token为空");
        }

        // 查询已存在的token
        List<GptTeamAccount> existingAccounts = baseMapper.selectList(
            Wrappers.lambdaQuery(GptTeamAccount.class)
                .in(GptTeamAccount::getToken, tokenSet)
        );
        
        Set<String> existingTokens = new HashSet<>();
        for (GptTeamAccount account : existingAccounts) {
            existingTokens.add(account.getToken());
        }

        // 准备新增的账号列表
        List<GptTeamAccount> newAccounts = new ArrayList<>();
        int skipCount = 0;
        
        for (String token : tokenSet) {
            if (existingTokens.contains(token)) {
                skipCount++;
                continue;
            }
            
            GptTeamAccount account = new GptTeamAccount();
            account.setToken(token);
            account.setStatus(true); // 默认启用
            newAccounts.add(account);
        }

        // 批量保存
        if (CollUtil.isNotEmpty(newAccounts)) {
            this.saveBatch(newAccounts);
        }
    }
}