package com.zy.common.web;

import com.baomidou.mybatisplus.annotations.TableField;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.plugins.Page;
import com.core.common.BaseRes;
import com.core.common.Cools;
import com.core.controller.AbstractBaseController;
import com.core.exception.CoolException;
import com.zy.asrs.entity.Node;
import com.zy.asrs.entity.Tag;
import com.zy.asrs.service.NodeService;
import com.zy.asrs.service.TagService;
import com.zy.system.entity.User;
import com.zy.system.entity.UserLogin;
import com.zy.system.service.UserLoginService;
import com.zy.system.service.UserService;
import io.swagger.annotations.ApiModelProperty;
import org.springframework.beans.factory.annotation.Autowired;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.time.temporal.Temporal;
import java.util.*;

/**
 * Created by vincent on 2019-09-09
 */
public class BaseController extends AbstractBaseController {

    protected static final String RANGE_TIME_LINK = " - ";

    @Autowired
    protected HttpServletRequest request;
    @Autowired
    private UserService userService;
    @Autowired
    private TagService tagService;
    @Autowired
    private NodeService nodeService;
    @Autowired
    private UserLoginService userLoginService;

    protected Node getOriginNode(){
        Node node = nodeService.getTop();
        if (node == null) {
            throw new CoolException("库区数据错误");
        }
        return node;
    }

    protected Long getHostId(){
        if (getUserId() == 9527) {
            return null;
        }
        User user = getUser();
        if (user.getRoleId() == 1) {
            String hostId = String.valueOf(request.getAttribute("hostId"));
            if (Cools.isEmpty(hostId)) {
                UserLogin userLogin = userLoginService.selectOne(new EntityWrapper<UserLogin>().eq("user_id", user.getId()));
                if (userLogin != null) {
                    return userLogin.getHostId();
                }
            }
            return Long.parseLong(hostId);
        } else {
            return user.getHostId();
        }
    }

    protected Long getUserId(){
        return Long.parseLong(String.valueOf(request.getAttribute("userId")));
    }

    protected User getUser(){
        User user = userService.selectById(getUserId());
        if (null == user) {
            throw new CoolException(BaseRes.DENIED);
        }
        return user;
    }

    protected String getComment(Class<?> cls, String fieldName){
        Field[] fields = Cools.getAllFields(cls);
        for (Field field : fields){
            if (fieldName.equals(field.getName())){
                return field.getAnnotation(ApiModelProperty.class).value();
            }
        }
        return "";
    }

    protected Tag getOriginTag(){
        return tagService.getTop();
    }

    protected <T> void hostEq(EntityWrapper<T> wrapper){
        Long hostId = getHostId();
        if (hostId != null) {
            wrapper.eq("host_id", hostId);
        }
    }

    /**
     * 分页组装
     * @param pageNumber
     * @param pageSize
     * @param map
     * @param cls
     * @param <T>
     * @return
     */
    protected <T> Page<T> toPage(Integer pageNumber, Integer pageSize, Map<String, Object> map, Class<T> cls){
        // 分页索引和单页数量组装
        pageNumber = Optional.ofNullable(pageNumber).orElse(1);
        pageSize = Optional.ofNullable(pageSize).orElse(10);
        Page<T> page = new Page<>(pageNumber, pageSize);
        map.put("pageNumber", pageNumber);
        map.put("pageSize", pageSize);

        // 全字段模糊搜索 todo
        if (!Cools.isEmpty(map.get("condition"))) {
            Set<String> columns = new HashSet<>();
            for (Field field : Cools.getAllFields(cls)){
                if (Modifier.isFinal(field.getModifiers())
                        || Modifier.isStatic(field.getModifiers())
                        || Modifier.isTransient(field.getModifiers())){
                    continue;
                }
                String column = null;
                if (field.isAnnotationPresent(TableField.class)) {
                    column = field.getAnnotation(TableField.class).value();
                }
                if (Cools.isEmpty(column)) {
                    column = field.getName();
                }
                if (!map.keySet().contains(column)) {
                    columns.add(column);
                }
            }
            columns.forEach(col->map.put(col, map.get("condition")));
        }
        page.setCondition(map);
        return page;
    }

    /**
     * 全字段模糊搜索
     * @param cls 模型类
     * @param set 排除字段集合
     * @param condition 搜索内容
     */
    protected <T> void allLike(Class<T> cls, Set<String> set, EntityWrapper<T> wrapper, String condition){
        if (Cools.isEmpty(condition)) {
            return;
        }
        String keyword = String.valueOf(condition).trim();
        if (keyword.isEmpty()) {
            return;
        }
        boolean appended = false;
        for (Field field :Cools.getAllFields(cls)){
            if (Modifier.isFinal(field.getModifiers())
                    || Modifier.isStatic(field.getModifiers())
                    || Modifier.isTransient(field.getModifiers())){
                continue;
            }
            String column = null;
            if (field.isAnnotationPresent(TableField.class)) {
                column = field.getAnnotation(TableField.class).value();
            }
            if (Cools.isEmpty(column)) {
                column = field.getName();
            }
            if (!set.contains(column)) {
                if (supportsLikeSearch(field.getType())) {
                    if (!appended) {
                        wrapper.andNew();
                    } else {
                        wrapper.or();
                    }
                    wrapper.like(column, keyword);
                    appended = true;
                    continue;
                }
                Object exactValue = parseExactSearchValue(field.getType(), keyword);
                if (exactValue != null) {
                    if (!appended) {
                        wrapper.andNew();
                    } else {
                        wrapper.or();
                    }
                    wrapper.eq(column, exactValue);
                    appended = true;
                }
            }
        }
    }

    private boolean supportsLikeSearch(Class<?> fieldType) {
        return CharSequence.class.isAssignableFrom(fieldType)
                || fieldType == Character.class
                || fieldType == char.class
                || Date.class.isAssignableFrom(fieldType)
                || Temporal.class.isAssignableFrom(fieldType);
    }

    private Object parseExactSearchValue(Class<?> fieldType, String keyword) {
        if (!isNumericField(fieldType)) {
            return null;
        }
        try {
            BigDecimal numericValue = new BigDecimal(keyword);
            if (fieldType == Integer.class || fieldType == int.class) {
                return numericValue.stripTrailingZeros().scale() <= 0 ? numericValue.intValueExact() : null;
            }
            if (fieldType == Long.class || fieldType == long.class) {
                return numericValue.stripTrailingZeros().scale() <= 0 ? numericValue.longValueExact() : null;
            }
            if (fieldType == Short.class || fieldType == short.class) {
                return numericValue.stripTrailingZeros().scale() <= 0 ? numericValue.shortValueExact() : null;
            }
            if (fieldType == Byte.class || fieldType == byte.class) {
                return numericValue.stripTrailingZeros().scale() <= 0 ? numericValue.byteValueExact() : null;
            }
            if (fieldType == BigInteger.class) {
                return numericValue.stripTrailingZeros().scale() <= 0 ? numericValue.toBigIntegerExact() : null;
            }
            if (fieldType == Float.class || fieldType == float.class) {
                float value = numericValue.floatValue();
                return Float.isFinite(value) ? value : null;
            }
            if (fieldType == Double.class || fieldType == double.class) {
                double value = numericValue.doubleValue();
                return Double.isFinite(value) ? value : null;
            }
            if (fieldType == BigDecimal.class) {
                return numericValue;
            }
        } catch (Exception ignored) {
            return null;
        }
        return null;
    }

    private boolean isNumericField(Class<?> fieldType) {
        return Number.class.isAssignableFrom(fieldType)
                || fieldType == byte.class
                || fieldType == short.class
                || fieldType == int.class
                || fieldType == long.class
                || fieldType == float.class
                || fieldType == double.class;
    }
}