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package cn.bif.common;


import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.collections4.MapUtils;
import org.apache.commons.lang3.StringUtils;
import lombok.extern.slf4j.Slf4j;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;

@Slf4j
public class JsonUtils {
    private static ObjectMapper mapper;

    /**
     * 设置一些通用的属性
     */
    static {
        mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        // 允许key没有双引号
        mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
        // 允许key有单引号
        mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
        // 允许整数以0开头
        mapper.configure(JsonParser.Feature.ALLOW_NUMERIC_LEADING_ZEROS, true);
        // 允许字符串中存在回车换行控制符
        mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_CONTROL_CHARS, true);
    }

    public static String toJSONString(Object obj) {
        return obj != null ? toJSONString(obj, () -> "", false) : "";
    }

    public static String toFormatJSONString(Object obj) {
        return obj != null ? toJSONString(obj, () -> "", true) : "";
    }


    public static String toJSONString(Object obj, Supplier defaultSupplier, boolean format) {
        try {
            if (obj == null) {
                return defaultSupplier.get();
            }
            if (obj instanceof String) {
                return obj.toString();
            }
            if (obj instanceof Number) {
                return obj.toString();
            }
            if (format) {
                return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(obj);
            }
            return mapper.writeValueAsString(obj);
        } catch (Throwable e) {
            log.error(String.format("toJSONString %s", obj != null ? obj.toString() : "null"), e);
        }
        return defaultSupplier.get();
    }

    public static  T toJavaObject(String value, Class tClass) {
        return StringUtils.isNotBlank(value) ? toJavaObject(value, tClass, () -> null) : null;
    }

    public static  T toJavaObject(Object obj, Class tClass) {
        return obj != null ? toJavaObject(toJSONString(obj), tClass, () -> null) : null;
    }

    public static  T toJavaObject(String value, Class tClass, Supplier defaultSupplier) {
        try {
            if (StringUtils.isBlank(value)) {
                return defaultSupplier.get();
            }
            mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
            return mapper.readValue(value, tClass);
        } catch (Throwable e) {
            log.error(String.format("toJavaObject exception: \n %s\n %s", value, tClass), e);
        }
        return defaultSupplier.get();
    }

    public static  List toJavaObjectList(String value, Class tClass) {
        return StringUtils.isNotBlank(value) ? toJavaObjectList(value, tClass, () -> null) : null;
    }

    public static  List toJavaObjectList(Object obj, Class tClass) {
        return obj != null ? toJavaObjectList(toJSONString(obj), tClass, () -> null) : null;
    }

    public static  List toJavaObjectList(String value, Class tClass, Supplier> defaultSupplier) {
        try {
            if (StringUtils.isBlank(value)) {
                return defaultSupplier.get();
            }
            JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, tClass);
            return mapper.readValue(value, javaType);
        } catch (Throwable e) {
            log.error(String.format("toJavaObjectList exception \n%s\n%s", value, tClass), e);
        }
        return defaultSupplier.get();
    }

    // 简单地直接用json复制或者转换(Cloneable)
    public static  T jsonCopy(Object obj, Class tClass) {
        return obj != null ? toJavaObject(toJSONString(obj), tClass) : null;
    }

    public static Map toMap(String value) {
        return StringUtils.isNotBlank(value) ? toMap(value, () -> null) : null;
    }

    public static Map toMap(Object value) {
        return value != null ? toMap(value, () -> null) : null;
    }

    public static Map toMap(Object value, Supplier> defaultSupplier) {
        if (value == null) {
            return defaultSupplier.get();
        }
        try {
            if (value instanceof Map) {
                return (Map) value;
            }
        } catch (Exception e) {
            log.info("fail to convert" + toJSONString(value), e);
        }
        return toMap(toJSONString(value), defaultSupplier);
    }

    public static Map toMap(String value, Supplier> defaultSupplier) {
        if (StringUtils.isBlank(value)) {
            return defaultSupplier.get();
        }
        try {
            return toJavaObject(value, LinkedHashMap.class);
        } catch (Exception e) {
            log.error(String.format("toMap exception\n%s", value), e);
        }
        return defaultSupplier.get();
    }


    public static List