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// Copyright 2021-2024 The NATS Authors
// 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 io.nats.jwt;

import io.nats.json.JsonSerializable;
import io.nats.json.JsonValue;
import io.nats.json.JsonValueUtils;
import io.nats.json.JsonWriteUtils;

import java.util.Objects;

import static io.nats.json.JsonWriteUtils.beginJson;
import static io.nats.json.JsonWriteUtils.endJson;

public class ConnectOpts implements JsonSerializable {
    public final String jwt;
    public final String nkey;
    public final String sig;
    public final String authToken;
    public final String user;
    public final String pass;
    public final String name;
    public final String lang;
    public final String version;
    public final int protocol;

    public static ConnectOpts optionalInstance(JsonValue jv) {
        return jv == null ? null : new ConnectOpts(jv);
    }

    public ConnectOpts(JsonValue jv) {
        jwt = JsonValueUtils.readString(jv, "jwt");
        nkey = JsonValueUtils.readString(jv, "nkey");
        sig = JsonValueUtils.readString(jv, "sig");
        authToken = JsonValueUtils.readString(jv, "auth_token");
        user = JsonValueUtils.readString(jv, "user");
        pass = JsonValueUtils.readString(jv, "pass");
        name = JsonValueUtils.readString(jv, "name");
        lang = JsonValueUtils.readString(jv, "lang");
        version = JsonValueUtils.readString(jv, "version");
        protocol = JsonValueUtils.readInteger(jv, "protocol", -1);
    }

    @Override
    public String toJson() {
        StringBuilder sb = beginJson();
        JsonWriteUtils.addField(sb, "jwt", jwt);
        JsonWriteUtils.addField(sb, "nkey", nkey);
        JsonWriteUtils.addField(sb, "sig", sig);
        JsonWriteUtils.addField(sb, "auth_token", authToken);
        JsonWriteUtils.addField(sb, "user", user);
        JsonWriteUtils.addField(sb, "pass", pass);
        JsonWriteUtils.addField(sb, "name", name);
        JsonWriteUtils.addField(sb, "lang", lang);
        JsonWriteUtils.addField(sb, "version", version);
        JsonWriteUtils.addField(sb, "protocol", protocol);
        return endJson(sb).toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        ConnectOpts that = (ConnectOpts) o;

        if (protocol != that.protocol) return false;
        if (!Objects.equals(jwt, that.jwt)) return false;
        if (!Objects.equals(nkey, that.nkey)) return false;
        if (!Objects.equals(sig, that.sig)) return false;
        if (!Objects.equals(authToken, that.authToken)) return false;
        if (!Objects.equals(user, that.user)) return false;
        if (!Objects.equals(pass, that.pass)) return false;
        if (!Objects.equals(name, that.name)) return false;
        if (!Objects.equals(lang, that.lang)) return false;
        return Objects.equals(version, that.version);
    }

    @Override
    public int hashCode() {
        int result = jwt != null ? jwt.hashCode() : 0;
        result = 31 * result + (nkey != null ? nkey.hashCode() : 0);
        result = 31 * result + (sig != null ? sig.hashCode() : 0);
        result = 31 * result + (authToken != null ? authToken.hashCode() : 0);
        result = 31 * result + (user != null ? user.hashCode() : 0);
        result = 31 * result + (pass != null ? pass.hashCode() : 0);
        result = 31 * result + (name != null ? name.hashCode() : 0);
        result = 31 * result + (lang != null ? lang.hashCode() : 0);
        result = 31 * result + (version != null ? version.hashCode() : 0);
        result = 31 * result + protocol;
        return result;
    }
}