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/*******************************************************************************
 * Copyright (C) 2022-2023 WaveMaker, Inc.
 *
 * 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 com.wavemaker.runtime.data.model;

import java.util.Objects;

/**
 * @author Dilip Kumar
 * @since 15/3/17
 */
public class Aggregation {
    private String field;
    private AggregationType type;
    private String alias;

    public Aggregation() {
    }

    public Aggregation(final String field, final AggregationType type, final String alias) {
        this.field = field;
        this.type = type;
        this.alias = alias;
    }

    public String getField() {
        return field;
    }

    public void setField(final String field) {
        this.field = field;
    }

    public AggregationType getType() {
        return type;
    }

    public void setType(final AggregationType type) {
        this.type = type;
    }

    public String getAlias() {
        return alias;
    }

    public void setAlias(final String alias) {
        this.alias = alias;
    }

    public String asSelection() {
        return type.name() + "(" + field + ") as " + alias;
    }

    @Override
    public String toString() {
        return "Aggregation{" +
            "field='" + field + '\'' +
            ", type=" + type +
            ", alias='" + alias + '\'' +
            '}';
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof Aggregation)) {
            return false;
        }
        final Aggregation that = (Aggregation) o;
        return Objects.equals(getField(), that.getField()) &&
            Objects.equals(getType(), that.getType()) &&
            Objects.equals(getAlias(), that.getAlias());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getField(), getType(), getAlias());
    }
}