/*
 * Copyright 2024 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.keycloak.sdjwt;

import java.util.Collections;
import java.util.List;
import java.util.Objects;

import com.fasterxml.jackson.databind.JsonNode;

/**
 *
 * @author <a href="mailto:francis.pouatcha@adorsys.com">Francis Pouatcha</a>
 */
public class UndisclosedClaim extends Disclosable implements SdJwtClaim {
    private final SdJwtClaimName claimName;
    private final JsonNode claimValue;

    private UndisclosedClaim(SdJwtClaimName claimName, SdJwtSalt salt, JsonNode claimValue) {
        super(salt);
        this.claimName = claimName;
        this.claimValue = claimValue;
    }

    @Override
    Object[] toArray() {
        return new Object[] { getSaltAsString(), getClaimNameAsString(), claimValue };
    }

    @Override
    public SdJwtClaimName getClaimName() {
        return claimName;
    }

    @Override
    public String getClaimNameAsString() {
        return claimName.toString();
    }

    /**
     * Recall no info is visible on these claims in the JWT.
     */
    @Override
    public JsonNode getVisibleClaimValue(String hashAlgo) {
        throw new UnsupportedOperationException("Unimplemented method 'getVisibleClaimValue'");
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof UndisclosedClaim)) {
            return false;
        }
        if (!super.equals(o)) {
            return false;
        }

        UndisclosedClaim that = (UndisclosedClaim) o;
        return Objects.equals(claimName, that.claimName) &&//
            Objects.equals(claimValue, that.claimValue);
    }

    @Override
    public int hashCode() {
        int result = super.hashCode();
        result = 31 * result + Objects.hashCode(claimName);
        result = 31 * result + Objects.hashCode(claimValue);
        return result;
    }

    public static class Builder {
        private SdJwtClaimName claimName;
        private SdJwtSalt salt;
        private JsonNode claimValue;

        public Builder withClaimName(String claimName) {
            this.claimName = new SdJwtClaimName(claimName);
            return this;
        }

        public Builder withSalt(SdJwtSalt salt) {
            this.salt = salt;
            return this;
        }

        public Builder withClaimValue(JsonNode claimValue) {
            this.claimValue = claimValue;
            return this;
        }

        public UndisclosedClaim build() {
            claimName = Objects.requireNonNull(claimName, "claimName must not be null");
            claimValue = Objects.requireNonNull(claimValue, "claimValue must not be null");
            salt = salt == null ? new SdJwtSalt(SdJwtUtils.randomSalt()) : salt;
            return new UndisclosedClaim(claimName, salt, claimValue);
        }
    }

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

    @Override
    public List<String> getDisclosureStrings() {
        return Collections.singletonList(getDisclosureString());
    }
}
