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/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

package org.datavec.api.transform.quality;

import lombok.AllArgsConstructor;
import lombok.Data;
import org.datavec.api.transform.ColumnType;
import org.datavec.api.transform.quality.columns.ColumnQuality;
import org.datavec.api.transform.schema.Schema;

import java.util.List;

/**A report outlining number of invalid and missing features
 */
@AllArgsConstructor
@Data
public class DataQualityAnalysis {

    private Schema schema;
    private List columnQualityList;


    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        int nCol = schema.numColumns();

        int maxNameLength = 0;
        for (String s : schema.getColumnNames()) {
            maxNameLength = Math.max(maxNameLength, s.length());
        }

        //Header:
        sb.append(String.format("%-6s", "idx")).append(String.format("%-" + (maxNameLength + 8) + "s", "name"))
                        .append(String.format("%-15s", "type")).append(String.format("%-10s", "quality"))
                        .append("details").append("\n");

        for (int i = 0; i < nCol; i++) {
            String colName = schema.getName(i);
            ColumnType type = schema.getType(i);
            ColumnQuality columnQuality = columnQualityList.get(i);
            boolean pass = columnQuality.getCountInvalid() == 0L && columnQuality.getCountMissing() == 0L;
            String paddedName = String.format("%-" + (maxNameLength + 8) + "s", "\"" + colName + "\"");
            sb.append(String.format("%-6d", i)).append(paddedName).append(String.format("%-15s", type))
                            .append(String.format("%-10s", (pass ? "ok" : "FAIL"))).append(columnQuality).append("\n");
        }

        return sb.toString();
    }

}