package tools;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.jdbc.core.RowMapper;
import tctable.Tools;

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

public class DBTools {

    public static class JsonRowMapper implements RowMapper<String> {

        @Override
        public String mapRow(ResultSet rs, int rowNum) throws SQLException {
            ObjectMapper objectMapper = new ObjectMapper();
            Map<String, Object> resultMap = new HashMap<>();

            // Получаем метаданные ResultSet для получения названий столбцов
            int columnCount = rs.getMetaData().getColumnCount();
            for (int i = 1; i <= columnCount; i++) {
                String columnName = rs.getMetaData().getColumnName(i);
                Object columnValue = rs.getObject(i);
                resultMap.put(columnName, columnValue);
            }

            // Преобразовываем Map в JSON строку
            try {
                return objectMapper.writeValueAsString(resultMap);
            } catch (Exception e) {
                throw new RuntimeException("Failed to convert Map to JSON", e);
            }
        }

    }

    public static boolean hasColumn(ResultSet rs, String columnName) throws SQLException {
        ResultSetMetaData metaData = rs.getMetaData();
        int columnCount = metaData.getColumnCount();

        for (int i = 1; i <= columnCount; i++) {
            if (columnName.equalsIgnoreCase(metaData.getColumnName(i))) {
                return true;
            }
        }
        return false;
    }

    public static String getSQLValue(String t, String v) {
        //if($t=='object' && (strtoupper($v)!='NULL' && gettype($v)=='string')) $t='string'; //Если id шники uuid

        if (t.equals("object") || t.equals("uid")) {
            if (v.equals(""))
                v = "NULL";
        } else if (t.equals("i4") || t.equals("integer")) {
            if (v.equals(""))
                v = "NULL";
        } else if (t.equals("f8")) {
            if (v.equals(""))
                v = "NULL";
            v = Tools.replaceAll(v,",", "."); //The decimal part: point.
        } else if (t.equals("f4")) {
            if (v.equals(""))
                v = "NULL";
            v = Tools.replaceAll(v,",", "."); //The decimal part: point.
        } else if (t.equals("b")) {
            if (v.equals(""))
                v = "NULL";
            else if (v.equals("1"))
                v = "true";
            else if (v.equals("0"))
                v = "false";
        } else if (t.equals("string") || t.equals("text") || t.equals("dateTime") || t.equals("date")) {
            if (v.equals("")) {
                v = "NULL";
            } else {
                v = Tools.replaceAll(v,"'", "''");
                v = "'" + v + "'";
            }
        } else {
            v = "'" + v + "'";
        }
        return v;
    }

}