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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.gqlstatus;

import static org.neo4j.gqlstatus.Condition.createStandardDescription;

import java.util.Arrays;
import java.util.Map;
import java.util.Objects;

/**
 *  Implementation of CommonGqlStatusObject interface
 *  Contains common implementations for notifications, standard codes and errors without exposing GqlStatusInfo
 *  and DiagnosticRecord as public API.
 */
public class CommonGqlStatusObjectImplementation implements CommonGqlStatusObject {

    protected final GqlStatusInfo gqlStatusInfo;
    protected final DiagnosticRecord diagnosticRecord;
    protected String messageWithParameters;

    public CommonGqlStatusObjectImplementation(
            GqlStatusInfo gqlStatusInfo, DiagnosticRecord diagnosticRecord, Object[] messageParameterValues) {
        this.gqlStatusInfo = gqlStatusInfo;
        this.diagnosticRecord = diagnosticRecord;
        this.messageWithParameters = insertMessageParameters(messageParameterValues);
    }

    public CommonGqlStatusObjectImplementation(
            GqlStatusInfo gqlStatusInfo,
            DiagnosticRecord diagnosticRecord,
            Map messageParameters) {
        this.gqlStatusInfo = gqlStatusInfo;
        this.diagnosticRecord = diagnosticRecord;
        this.messageWithParameters = insertMessageParameters(messageParameters);
    }

    public CommonGqlStatusObjectImplementation(GqlStatusInfo gqlStatusInfo, DiagnosticRecord diagnosticRecord) {
        this.gqlStatusInfo = gqlStatusInfo;
        this.diagnosticRecord = diagnosticRecord;
        this.messageWithParameters = gqlStatusInfo.getMessage(new Object[0]);
    }

    @Override
    public String gqlStatus() {
        return gqlStatusInfo.getStatusString();
    }

    @Override
    public String statusDescription() {
        var condition = gqlStatusInfo.getCondition();
        var subCondition = gqlStatusInfo.getSubCondition();

        if (messageWithParameters.isEmpty()) {
            return (createStandardDescription(condition, subCondition));
        }

        return (createStandardDescription(condition, subCondition)) + ". " + messageWithParameters;
    }

    @Override
    public Map diagnosticRecord() {
        return diagnosticRecord.asMap();
    }

    /*
     * Insert the message parameter values in the message and
     * create a statusParameters map for the diagnostic record
     */
    protected String insertMessageParameters(Object[] parameterValues) {
        if (gqlStatusInfo.parameterCount() != parameterValues.length) {
            final var keys = gqlStatusInfo.getStatusParameterKeys().stream()
                    .map(Enum::name)
                    .toArray();
            throw new IllegalArgumentException(String.format(
                    "Expected parameterKeys: %s and parameterValues: %s to have the same length.",
                    Arrays.toString(keys), Arrays.toString(parameterValues)));
        }
        diagnosticRecord.setStatusParameters(gqlStatusInfo.parameterMap(parameterValues));
        return gqlStatusInfo.getMessage(parameterValues);
    }

    /*
     * Insert the message parameter values in the message and
     * check the types of the statusParameters map for the diagnostic record
     */
    protected String insertMessageParameters(Map parameters) {
        diagnosticRecord.setStatusParameters(gqlStatusInfo.parameterMap(parameters));
        return gqlStatusInfo.getMessage(parameters);
    }

    public Condition getCondition() {
        return gqlStatusInfo.getCondition();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        CommonGqlStatusObjectImplementation that = (CommonGqlStatusObjectImplementation) o;
        return Objects.equals(gqlStatusInfo, that.gqlStatusInfo)
                && Objects.equals(diagnosticRecord, that.diagnosticRecord);
    }

    @Override
    public int hashCode() {
        return Objects.hash(gqlStatusInfo, diagnosticRecord);
    }
}