package org.jeecg.modules.system.controller;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import liquibase.pro.packaged.Q;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.shiro.SecurityUtils;
import org.jeecg.common.api.vo.Result;
import org.jeecg.common.exception.JeecgBootException;
import org.jeecg.common.system.query.QueryGenerator;
import org.jeecg.common.system.vo.DictModel;
import org.jeecg.common.system.vo.LoginUser;
import org.jeecg.common.util.SqlInjectionUtil;
import org.jeecg.common.util.oConvertUtils;
import org.jeecg.modules.system.entity.SysCategory;
import org.jeecg.modules.system.model.TreeSelectModel;
import org.jeecg.modules.system.service.ISysCategoryService;
import org.jeecgframework.poi.excel.ExcelImportUtil;
import org.jeecgframework.poi.excel.def.NormalExcelConstants;
import org.jeecgframework.poi.excel.entity.ExportParams;
import org.jeecgframework.poi.excel.entity.ImportParams;
import org.jeecgframework.poi.excel.view.JeecgEntityExcelView;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @Description: 分类字典
 * @Author: jeecg-boot
 * @Date: 2019-05-29
 * @Version: V1.0
 */
@RestController
@RequestMapping("/sys/category")
@Slf4j
public class SysCategoryController {
    @Autowired
    private ISysCategoryService sysCategoryService;

    /**
     * 分类编码0
     */
    private static final String CATEGORY_ROOT_CODE = "0";

    /**
     * 分页列表查询
     *
     * @param sysCategory
     * @param pageNo
     * @param pageSize
     * @param req
     * @return
     */
    @GetMapping(value = "/rootList")
    public Result<IPage<SysCategory>> queryPageList(SysCategory sysCategory,
                                                    @RequestParam(name = "pageNo", defaultValue = "1") Integer pageNo,
                                                    @RequestParam(name = "pageSize", defaultValue = "10") Integer pageSize,
                                                    HttpServletRequest req) {
        if (oConvertUtils.isEmpty(sysCategory.getPid())) {
            sysCategory.setPid("0");
        }
        Result<IPage<SysCategory>> result = new Result<IPage<SysCategory>>();

        //--author:os_chengtgen---date:20190804 -----for: 分类字典页面显示错误,issues:377--------start
        //--author:liusq---date:20211119 -----for: 【vue3】分类字典页面查询条件配置--------start
        QueryWrapper<SysCategory> queryWrapper = QueryGenerator.initQueryWrapper(sysCategory, req.getParameterMap());
        String name = sysCategory.getName();
        String code = sysCategory.getCode();
        //QueryWrapper<SysCategory> queryWrapper = new QueryWrapper<SysCategory>();
        if (StringUtils.isBlank(name) && StringUtils.isBlank(code)) {
            queryWrapper.eq("pid", sysCategory.getPid());
        }
        //--author:liusq---date:20211119 -----for: 分类字典页面查询条件配置--------end
        //--author:os_chengtgen---date:20190804 -----for:【vue3】 分类字典页面显示错误,issues:377--------end

        Page<SysCategory> page = new Page<SysCategory>(pageNo, pageSize);
        IPage<SysCategory> pageList = sysCategoryService.page(page, queryWrapper);
        result.setSuccess(true);
        result.setResult(pageList);
        return result;
    }

    @GetMapping(value = "/childList")
    public Result<List<SysCategory>> queryPageList(SysCategory sysCategory, HttpServletRequest req) {
        Result<List<SysCategory>> result = new Result<List<SysCategory>>();
        QueryWrapper<SysCategory> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("pid", sysCategory.getPid());
        queryWrapper.orderByAsc("code");
        List<SysCategory> list = sysCategoryService.list(queryWrapper);
        result.setSuccess(true);
        result.setResult(list);
        return result;
    }


    /**
     * 添加
     *
     * @param sysCategory
     * @return
     */
    @PostMapping(value = "/add")
    public Result<SysCategory> add(@RequestBody SysCategory sysCategory) {
        Result<SysCategory> result = new Result<SysCategory>();
        sysCategoryService.addSysCategory(sysCategory);
        result.success("添加成功！");
        return result;
    }

    /**
     * 编辑
     *
     * @param sysCategory
     * @return
     */
    @RequestMapping(value = "/edit", method = {RequestMethod.PUT, RequestMethod.POST})
    public Result<SysCategory> edit(@RequestBody SysCategory sysCategory) {
        Result<SysCategory> result = new Result<SysCategory>();
        sysCategoryService.updateSysCategory(sysCategory);
        result.success("修改成功!");
        return result;
    }

    /**
     * 通过id删除
     *
     * @param id
     * @return
     */
    @DeleteMapping(value = "/delete")
    public Result<SysCategory> delete(@RequestParam(name = "id", required = true) String id) {
        Result<SysCategory> result = new Result<SysCategory>();
        SysCategory sysCategory = sysCategoryService.getById(id);
        if (sysCategory == null) {
            result.error500("未找到对应实体");
        } else {
            this.sysCategoryService.deleteSysCategory(id);
            result.success("删除成功!");
        }

        return result;
    }

    /**
     * 批量删除
     *
     * @param ids
     * @return
     */
    @DeleteMapping(value = "/deleteBatch")
    public Result<SysCategory> deleteBatch(@RequestParam(name = "ids", required = true) String ids) {
        Result<SysCategory> result = new Result<SysCategory>();
        if (ids == null || "".equals(ids.trim())) {
            result.error500("参数不识别！");
        } else {
            this.sysCategoryService.deleteSysCategory(ids);
            result.success("删除成功!");
        }
        return result;
    }

    /**
     * 通过id查询
     *
     * @param id
     * @return
     */
    @GetMapping(value = "/queryById")
    public Result<SysCategory> queryById(@RequestParam(name = "id", required = true) String id) {
        Result<SysCategory> result = new Result<SysCategory>();
        SysCategory sysCategory = sysCategoryService.getById(id);
        if (sysCategory == null) {
            result.error500("未找到对应实体");
        } else {
            result.setResult(sysCategory);
            result.setSuccess(true);
        }
        return result;
    }

    /**
     * 导出excel
     *
     * @param request
     */
    @RequestMapping(value = "/exportXls")
    public ModelAndView exportXls(HttpServletRequest request, SysCategory sysCategory) {
        // Step.1 组装查询条件查询数据
        List<SysCategory> pageList = sysCategoryService.listByParams(sysCategory);
        // Step.2 AutoPoi 导出Excel
        ModelAndView mv = new ModelAndView(new JeecgEntityExcelView());
        // 过滤选中数据
        String selections = request.getParameter("selections");
        if (oConvertUtils.isEmpty(selections)) {
            mv.addObject(NormalExcelConstants.DATA_LIST, pageList);
        } else {
            List<String> selectionList = Arrays.asList(selections.split(","));
            List<SysCategory> exportList = pageList.stream().filter(item -> selectionList.contains(item.getId())).collect(Collectors.toList());
            mv.addObject(NormalExcelConstants.DATA_LIST, exportList);
        }
        //导出文件名称
        mv.addObject(NormalExcelConstants.FILE_NAME, "分类字典列表");
        mv.addObject(NormalExcelConstants.CLASS, SysCategory.class);
        LoginUser user = (LoginUser) SecurityUtils.getSubject().getPrincipal();
        mv.addObject(NormalExcelConstants.PARAMS, new ExportParams("分类字典列表数据", "导出人:" + user.getRealname(), "导出信息"));
        return mv;
    }

    /**
     * 通过excel导入数据
     *
     * @param request
     * @param response
     * @return
     */
    @RequestMapping(value = "/importExcel", method = RequestMethod.POST)
    public Result<?> importExcel(HttpServletRequest request, HttpServletResponse response) throws IOException {
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
        // 错误信息
        List<String> errorMessage = new ArrayList<>();
        for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) {
            // 获取上传文件对象
            MultipartFile file = entity.getValue();
            ImportParams params = new ImportParams();
            params.setTitleRows(0);
            params.setHeadRows(1);
            params.setNeedSave(true);
            try {
                List<SysCategory> listSysCategorys = ExcelImportUtil.importExcel(file.getInputStream(), SysCategory.class, params);
                //组装树结构
                List<SysCategory> treeNodes = buildTree(listSysCategorys);
                for (SysCategory sysCategory : treeNodes) {
                    sysCategoryService.deepAdd(sysCategory, errorMessage);
                }
            } catch (Exception e) {
                log.error(e.getMessage(), e);
            } finally {
                try {
                    file.getInputStream().close();
                } catch (IOException ignored) {
                }
            }
        }
        return Result.ok("导入成功");
    }


    /**
     * 加载单个数据 用于回显
     */
    @RequestMapping(value = "/loadOne", method = RequestMethod.GET)
    public Result<SysCategory> loadOne(@RequestParam(name = "field") String field, @RequestParam(name = "val") String val) {
        Result<SysCategory> result = new Result<SysCategory>();
        try {
            //update-begin-author:taoyan date:2022-5-6 for: issues/3663 sql注入问题
            boolean isClassField = SqlInjectionUtil.isClassField(field, SysCategory.class);
            if (!isClassField) {
                return Result.error("字段无效，请检查!");
            }
            //update-end-author:taoyan date:2022-5-6 for: issues/3663 sql注入问题
            QueryWrapper<SysCategory> query = new QueryWrapper<SysCategory>();
            query.eq(field, val);
            List<SysCategory> ls = this.sysCategoryService.list(query);
            if (ls == null || ls.size() == 0) {
                result.setMessage("查询无果");
                result.setSuccess(false);
            } else if (ls.size() > 1) {
                result.setMessage("查询数据异常,[" + field + "]存在多个值:" + val);
                result.setSuccess(false);
            } else {
                result.setSuccess(true);
                result.setResult(ls.get(0));
            }
        } catch (Exception e) {
            e.printStackTrace();
            result.setMessage(e.getMessage());
            result.setSuccess(false);
        }
        return result;
    }

    /**
     * 加载节点的子数据
     */
    @RequestMapping(value = "/loadTreeChildren", method = RequestMethod.GET)
    public Result<List<TreeSelectModel>> loadTreeChildren(@RequestParam(name = "pid") String pid) {
        Result<List<TreeSelectModel>> result = new Result<List<TreeSelectModel>>();
        try {
            List<TreeSelectModel> ls = this.sysCategoryService.queryListByPid(pid);
            result.setResult(ls);
            result.setSuccess(true);
        } catch (Exception e) {
            e.printStackTrace();
            result.setMessage(e.getMessage());
            result.setSuccess(false);
        }
        return result;
    }

    /**
     * 加载一级节点/如果是同步 则所有数据
     */
    @RequestMapping(value = "/loadTreeRoot", method = RequestMethod.GET)
    public Result<List<TreeSelectModel>> loadTreeRoot(@RequestParam(name = "async") Boolean async, @RequestParam(name = "pcode") String pcode) {
        Result<List<TreeSelectModel>> result = new Result<List<TreeSelectModel>>();
        try {
            List<TreeSelectModel> ls = this.sysCategoryService.queryListByCode(pcode);
            if (!async) {
                loadAllCategoryChildren(ls);
            }
            result.setResult(ls);
            result.setSuccess(true);
        } catch (Exception e) {
            e.printStackTrace();
            result.setMessage(e.getMessage());
            result.setSuccess(false);
        }
        return result;
    }

    /**
     * 递归求子节点 同步加载用到
     */
    private void loadAllCategoryChildren(List<TreeSelectModel> ls) {
        for (TreeSelectModel tsm : ls) {
            List<TreeSelectModel> temp = this.sysCategoryService.queryListByPid(tsm.getKey());
            if (temp != null && temp.size() > 0) {
                tsm.setChildren(temp);
                loadAllCategoryChildren(temp);
            }
        }
    }

    /**
     * 校验编码
     *
     * @param pid
     * @param code
     * @return
     */
    @GetMapping(value = "/checkCode")
    public Result<?> checkCode(@RequestParam(name = "pid", required = false) String pid, @RequestParam(name = "code", required = false) String code) {
        if (oConvertUtils.isEmpty(code)) {
            return Result.error("错误,分类编码为空!");
        }
        SysCategory parent = sysCategoryService.getById(pid);
        String rootCode = null;
        if (parent != null) {
            rootCode = parent.getRootCode();
        }
        SysCategory original = sysCategoryService.getByCodeAndRootCode(code, rootCode);
        if (original != null) {
            return Result.error("编码已存在,请重新输入!");
        }
        return Result.ok();
    }


    /**
     * 分类字典树控件 加载节点
     *
     * @param pid
     * @param pcode
     * @param condition
     * @return
     */
    @RequestMapping(value = "/loadTreeData", method = RequestMethod.GET)
    public Result<List<TreeSelectModel>> loadDict(@RequestParam(name = "pid", required = false) String pid, @RequestParam(name = "pcode", required = false) String pcode, @RequestParam(name = "condition", required = false) String condition) {
        Result<List<TreeSelectModel>> result = new Result<List<TreeSelectModel>>();
        //pid如果传值了 就忽略pcode的作用
        if (oConvertUtils.isEmpty(pid)) {
            if (oConvertUtils.isEmpty(pcode)) {
                result.setSuccess(false);
                result.setMessage("加载分类字典树参数有误.[null]!");
                return result;
            } else {
                if (ISysCategoryService.ROOT_PID_VALUE.equals(pcode)) {
                    pid = ISysCategoryService.ROOT_PID_VALUE;
                } else {
                    pid = this.sysCategoryService.queryIdByCode(pcode);
                }
                if (oConvertUtils.isEmpty(pid)) {
                    result.setSuccess(false);
                    result.setMessage("加载分类字典树参数有误.[code]!");
                    return result;
                }
            }
        }
        Map<String, String> query = null;
        if (oConvertUtils.isNotEmpty(condition)) {
            query = JSON.parseObject(condition, Map.class);
        }
        List<TreeSelectModel> ls = sysCategoryService.queryListByPid(pid, query);
        result.setSuccess(true);
        result.setResult(ls);
        return result;
    }

    /**
     * 分类字典控件数据回显[表单页面]
     *
     * @param ids
     * @param delNotExist 是否移除不存在的项，默认为true，设为false如果某个key不存在数据库中，则直接返回key本身
     * @return
     */
    @RequestMapping(value = "/loadDictItem", method = RequestMethod.GET)
    public Result<List<String>> loadDictItem(@RequestParam(name = "ids") String ids, @RequestParam(name = "delNotExist", required = false, defaultValue = "true") boolean delNotExist) {
        Result<List<String>> result = new Result<>();
        // 非空判断
        if (StringUtils.isBlank(ids)) {
            result.setSuccess(false);
            result.setMessage("ids 不能为空");
            return result;
        }
        // 查询数据
        List<String> textList = sysCategoryService.loadDictItem(ids, delNotExist);
        result.setSuccess(true);
        result.setResult(textList);
        return result;
    }

    /**
     * [列表页面]加载分类字典数据 用于值的替换
     *
     * @param code
     * @return
     */
    @RequestMapping(value = "/loadAllData", method = RequestMethod.GET)
    public Result<List<DictModel>> loadAllData(@RequestParam(name = "code", required = true) String code) {
        Result<List<DictModel>> result = new Result<List<DictModel>>();
        LambdaQueryWrapper<SysCategory> query = new LambdaQueryWrapper<SysCategory>();
        if (oConvertUtils.isNotEmpty(code) && !CATEGORY_ROOT_CODE.equals(code)) {
            query.likeRight(SysCategory::getCode, code);
        }
        List<SysCategory> list = this.sysCategoryService.list(query);
        if (list == null || list.size() == 0) {
            result.setMessage("无数据,参数有误.[code]");
            result.setSuccess(false);
            return result;
        }
        List<DictModel> rdList = new ArrayList<DictModel>();
        for (SysCategory c : list) {
            rdList.add(new DictModel(c.getId(), c.getName()));
        }
        result.setSuccess(true);
        result.setResult(rdList);
        return result;
    }

    /**
     * 根据父级id批量查询子节点
     *
     * @param parentIds
     * @return
     */
    @GetMapping("/getChildListBatch")
    public Result getChildListBatch(@RequestParam("parentIds") String parentIds) {
        try {
            QueryWrapper<SysCategory> queryWrapper = new QueryWrapper<>();
            List<String> parentIdList = Arrays.asList(parentIds.split(","));
            queryWrapper.in("pid", parentIdList);
            List<SysCategory> list = sysCategoryService.list(queryWrapper);
            IPage<SysCategory> pageList = new Page<>(1, 10, list.size());
            pageList.setRecords(list);
            return Result.OK(pageList);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            return Result.error("批量查询子节点失败：" + e.getMessage());
        }
    }


    /**
     * 组装 树型结构
     *
     * @param list
     * @return
     */
    private List<SysCategory> buildTree(List<SysCategory> list) {
        //根节点
        List<SysCategory> rootList = new ArrayList<>();
        //节点 Map
        Map<String, SysCategory> nodeMap = list.stream().collect(Collectors.toMap(SysCategory::getCode, node -> node));

        for (SysCategory node : list) {
            if (StringUtils.isBlank(node.getParentCode()) || ISysCategoryService.ROOT_PID_VALUE.equals(node.getParentCode())) {
                rootList.add(node);
            } else {
                SysCategory parent = nodeMap.get(node.getParentCode());
                if (parent == null) {
                    throw new JeecgBootException("父节点不存在：" + node.getParentCode());
                }
                parent.addChild(node);
            }
        }

        return rootList;
    }


}