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package ru.fix.dynamic.property.jackson;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Duration;
import java.util.*;
import java.util.function.Function;
import java.util.function.Predicate;

/**
 * Provides serialization capabilities for standard JVM types
 */
public class StdSerializer {
    private static final HashMap> exactTypeMarshallers = new HashMap<>();
    private static final HashMap> exactTypeUnmarshallers = new HashMap<>();

    private static final LinkedHashMap, Function> conditionalMarshallers = new LinkedHashMap<>();
    private static final HashMap, Function> conditionalUnmarshallers = new HashMap<>();


    static {
        exactTypeMarshallers.put(Boolean.class, value -> value.toString());
        exactTypeMarshallers.put(Byte.class, value -> value.toString());
        exactTypeMarshallers.put(Short.class, value -> value.toString());
        exactTypeMarshallers.put(Integer.class, value -> value.toString());
        exactTypeMarshallers.put(Long.class, value -> value.toString());
        exactTypeMarshallers.put(Float.class, value -> value.toString());
        exactTypeMarshallers.put(Double.class, value -> value.toString());
        exactTypeMarshallers.put(BigDecimal.class, value -> value.toString());
        exactTypeMarshallers.put(BigInteger.class, value -> value.toString());
        exactTypeMarshallers.put(Duration.class, value -> value.toString());
        exactTypeMarshallers.put(String.class, value -> value.toString());

        exactTypeUnmarshallers.put(Boolean.class, string -> Boolean.valueOf(string));
        exactTypeUnmarshallers.put(Byte.class, string -> Byte.valueOf(string));
        exactTypeUnmarshallers.put(Short.class, string -> Short.valueOf(string));
        exactTypeUnmarshallers.put(Integer.class, string -> Integer.valueOf(string));
        exactTypeUnmarshallers.put(Long.class, string -> Long.valueOf(string));
        exactTypeUnmarshallers.put(Float.class, string -> Float.valueOf(string));
        exactTypeUnmarshallers.put(Double.class, string -> Double.valueOf(string));
        exactTypeUnmarshallers.put(BigDecimal.class, string -> new BigDecimal(string));
        exactTypeUnmarshallers.put(BigInteger.class, string -> new BigInteger(string));
        exactTypeUnmarshallers.put(Duration.class, string -> Duration.parse(string));
        exactTypeUnmarshallers.put(String.class, string -> string);

        conditionalMarshallers.put(type -> Path.class.isAssignableFrom(type), value -> value.toString());

        conditionalUnmarshallers.put(type -> Path.class.isAssignableFrom(type), string -> Paths.get(string));
    }

    /**
     * @return empty if no suitable serializer found for given type
     */
    public Optional