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package com.megatim.fdxcommons.tools.database.queries;

import com.megatim.fdxcommons.model.dataproduction.CommonDataProduction;
import com.megatim.fdxcommons.model.enumeration.CriteriaLogicConnector;
import com.megatim.fdxcommons.model.enumeration.Operateur;
import com.megatim.fdxcommons.model.pojo.JsonTableDefinition;
import com.megatim.fdxcommons.tools.database.exceptions.BadDataValueException;
import com.megatim.fdxcommons.tools.database.exceptions.ColumnNotFoundException;
import com.megatim.fdxcommons.tools.database.exceptions.LocalDateTimeValueParseError;
import com.megatim.fdxcommons.tools.database.queries.metadata.QueryCriterion;
import com.megatim.fdxcommons.tools.database.queries.metadata.QueryParam;
import com.megatim.fdxcommons.tools.database.queries.metadata.WhereQueryParameters;
import com.megatim.fdxcommons.tools.database.tables.appcolumns.DataProductionUpdateIdColumnDefinition;
import com.megatim.fdxcommons.tools.database.tables.appcolumns.DateMiseAJourColumnDefinition;
import com.megatim.fdxcommons.tools.database.tables.appcolumns.DeletedColumnDefinition;
import com.megatim.fdxcommons.tools.database.tables.appcolumns.IndexColumnDefinition;
import com.megatim.fdxcommons.tools.database.tables.appcolumns.ParentIdColumnDefinition;
import com.megatim.fdxcommons.tools.utils.JsonDataUtil;
import com.megatim.fdxcommons.tools.utils.JsonTableUtil;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 *
 * @author ASUS
 */
public class JsonDelete {

    private final Connection connection;
    private final Map<Long, Object> matchedData;
    private final String rootTableName;
    private final JsonTableDefinition tableDefinition;
    private final CommonDataProduction dataProduction;

    public JsonDelete(Connection connection, Map<Long, Object> matchedData, String rootTableName, JsonTableDefinition tableDefinition, CommonDataProduction dataProduction) {
        this.connection = connection;
        this.matchedData = matchedData;
        this.rootTableName = rootTableName;
        this.tableDefinition = tableDefinition;
        this.dataProduction = dataProduction;
    }

    public void delete() throws ColumnNotFoundException, SQLException, BadDataValueException, LocalDateTimeValueParseError, Exception {
        Map<String, Set<Long>> tableToMatchingIndexes = new JsonDataUtil().tableToMatchingIndexes(matchedData, rootTableName);
        Map<String, List<String>> tableToDirectChildren = new JsonTableUtil(tableDefinition).tableToChildrenTables();

        for (Map.Entry<String, Set<Long>> entry : tableToMatchingIndexes.entrySet()) {
            Set<Long> indexes = entry.getValue();
            List<String> childrenTableList = tableToDirectChildren.get(entry.getKey());
            final String parentTable = entry.getKey();
            final String parentIdColumn = new ParentIdColumnDefinition().name();
            final String indexColumn = new IndexColumnDefinition().name();

            if (indexes != null) {
                QueryCriterion childrenQueryCriterion = queryCriterion(indexes, parentIdColumn);
                QueryCriterion parentQueryCriterion = queryCriterion(indexes, indexColumn);
                List<QueryParam> childParams = parameters(childrenQueryCriterion);
                List<QueryParam> parentParams = parameters(parentQueryCriterion);
                List<String> columnNames = Arrays.asList(new DeletedColumnDefinition().name(), new DataProductionUpdateIdColumnDefinition().name(), new DateMiseAJourColumnDefinition().name());

                if (childrenTableList != null && childrenTableList.isEmpty()) {
                    for (String table : childrenTableList) {
                        new UpdateQuery(connection, childrenQueryCriterion, table, columnNames, childParams).execute();
                    }
                }
                new UpdateQuery(connection, parentQueryCriterion, parentTable, columnNames, parentParams).execute();
            }
        }
    }

    private List<QueryParam> parameters(QueryCriterion queryCriterion) throws Exception {
        List<QueryParam> params = new ArrayList<>();

        //On ajoute les paramètres de l'application
        params.add(new QueryParam(new DeletedColumnDefinition().name(), 1));
        params.add(new QueryParam(new DataProductionUpdateIdColumnDefinition().name(), dataProduction.getId()));
        params.add(new QueryParam(new DateMiseAJourColumnDefinition().name(), dataProduction.getDateProduction()));

        //On ajoute ensuite les paramètre de la clause WHERE
        params.addAll(new WhereQueryParameters(queryCriterion).parameters());

        return params;
    }

    private QueryCriterion queryCriterion(Set<Long> indexes, String columnName) {
        List<QueryCriterion> criteria = new ArrayList<>();
        indexes.stream().forEach(i -> criteria.add(new QueryCriterion(columnName, i, Operateur.EQUALS, null, Arrays.asList())));

        return new QueryCriterion(null, null, null, CriteriaLogicConnector.OR, criteria);
    }
}