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package io.rtr.alchemy.identities;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class AttributesMap implements Map {
    private static final AttributesMap EMPTY = new AttributesMap(Collections.emptyMap());
    private final Map values;

    private AttributesMap(final Map values) {
        this.values = Map.copyOf(values);
    }

    public static Builder newBuilder() {
        return new Builder();
    }

    public static AttributesMap empty() {
        return EMPTY;
    }

    @SuppressWarnings("unchecked")
    private  T getValue(
            final String name, final Class expectedClass, final Object defaultValue) {
        final Object value = values.get(name);

        if (value == null || value.getClass() != expectedClass) {
            return (T) defaultValue;
        }

        return (T) value;
    }

    public String getString(final String name) {
        return getValue(name, String.class, null);
    }

    public String getString(final String name, final String defaultValue) {
        return getValue(name, String.class, defaultValue);
    }

    public Long getNumber(final String name) {
        return getValue(name, Long.class, null);
    }

    public Long getNumber(final String name, final long defaultValue) {
        return getValue(name, Long.class, defaultValue);
    }

    public Boolean getBoolean(final String name) {
        return getValue(name, Boolean.class, null);
    }

    public Boolean getBoolean(final String name, final boolean defaultValue) {
        return getValue(name, Boolean.class, defaultValue);
    }

    public Class getType(final String name) {
        final Object value = values.get(name);
        return value != null ? value.getClass() : null;
    }

    @Override
    public int size() {
        return values.size();
    }

    @Override
    public boolean isEmpty() {
        return values.isEmpty();
    }

    @Override
    public boolean containsKey(final Object o) {
        return values.containsKey(o);
    }

    @Override
    public boolean containsValue(final Object o) {
        return values.containsValue(o);
    }

    @Override
    public Object get(final Object o) {
        return values.get(o);
    }

    @Override
    public Object put(final String s, final Object o) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Object remove(final Object o) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void putAll(final Map map) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void clear() {
        throw new UnsupportedOperationException();
    }

    @Override
    public Set keySet() {
        return values.keySet();
    }

    @Override
    public Collection