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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.jackson;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.core.JsonTokenId;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.vdurmont.semver4j.Semver;
import com.vdurmont.semver4j.SemverException;

import java.io.IOException;

public class SemverDeserializer extends StdDeserializer {
    private final Semver.SemverType semverType;

    public SemverDeserializer() {
        this(Semver.SemverType.NPM);
    }

    public SemverDeserializer(Semver.SemverType semverType) {
        super(Semver.class);
        this.semverType = semverType;
    }

    @Override
    public Semver deserialize(final JsonParser p, final DeserializationContext ctxt) throws IOException {
        switch (p.getCurrentTokenId()) {
            case JsonTokenId.ID_STRING:
            case JsonTokenId.ID_NUMBER_INT:
                final String str = p.getText().trim();
                try {
                    return buildSemver(str);
                } catch (SemverException e) {
                    ctxt.reportMappingException(e.getMessage());
                }
            default:
                throw ctxt.wrongTokenException(p, JsonToken.VALUE_STRING, "expected String or Number");
        }
    }

    private Semver buildSemver(String s) {
        return new Semver(s, semverType);
    }
}