@opengis/bi/server/routes/data/controllers/util/normalizeData.js

BI data visualization module

function normalizeData(data, query = {}, columnTypes = []) {
  const skip = [];
  ['x', 'groupby', 'granularity'].forEach((el) => {
    // console.log(el, query[el], columnTypes.find(col => col.name == query[el]))
    if (!columnTypes.find((col) => col.name == query[el])) {
      if (query[el] && query[el] !== 'null') {
        if (el === 'granularity' && !['week', 'month', 'quarter', 'year'].includes(query[el])) {
          skip.push(`invalid granularity option: ${query[el]}`);
        } else if (el !== 'granularity') { skip.push(`column not found: ${query[el]}`); }
      }
      if (!(el === 'granularity' || (el === 'groupby' && query[el] === 'null'))) delete query[el];
    }
  });

  if (
    !columnTypes.find(
      (col) => col.type === 'numeric' && col.name == query.metric
    )
  ) {
    delete query.metric;
  }

  const xName = query.x || (Array.isArray(data.x) ? data.x[0] : data.x);
  const xType = columnTypes.find((el) => el.name == xName)?.type;

  const granularity =
    xType === 'date' || xType?.includes('timestamp')
      ? query.granularity || data.granularity || 'year'
      : null;

  const x =
    (granularity
      ? `date_trunc('${granularity}',${xName})::date::text`
      : null) || xName;

  const metrics = Array.isArray(data.metrics || data.metric) ? (data.metrics || data.metric) : [data.metrics || data.metric];
  const metric =
    (query.metric ? `sum(${query.metric})` : null) ||
    (metrics.length
      ? (metrics
        ?.filter((el) => el && columnTypes.find((col) => col.name == (el?.name || el)))
        ?.map((el) => el.fx || `${el.operator || 'sum'}(${el.name || el})`)?.join(',') || 'count(*)')
      : 'count(*)');

  const yName = metrics?.[0]?.name || metrics?.[0];
  const yType = columnTypes.find((el) => el.name == yName)?.type;

  const { cls, groupbyCls, table, filterCustom } = data;
  const groupby = (query.groupby || data.groupby) === 'null' ? null : (query.groupby || data.groupby);
  // const orderby = query.orderby || data.orderby || 'count(*)';

  const custom = query?.filterCustom
    ?.split(',')
    ?.map((el) => filterCustom?.find((item) => item?.name === el)?.sql)
    ?.filter((el) => el)
    ?.join(' and ');
  const where = `${data.query || '1=1'} and ${custom || 'true'}`;

  const tableSQL = data.tableSQL?.length
    ? `(select * from ${data?.table} t ${data.tableSQL || ''} where ${where})q`
    : undefined;

  return { x, cls, groupbyCls, metric, table, where, tableSQL, groupby, xName, xType, yName, yType, error: skip.length ? skip.join(',') : undefined };
}
export default normalizeData;