const pool = require("../config");

// Get all tags
const getHistoryAlarmDb = async (searchParams = {}) => {
  let queryParams = [];

  if (searchParams.limit) {
    const page = Number(searchParams.page ?? 1) - 1;
    queryParams = [Number(searchParams.limit ?? 10), page];
  }

  const { whereOrConditions, whereParamOr } = pool.buildStringOrIlike(
    [
      "b.tag_name",
      "a.tagnum"
    ],
    searchParams.criteria,
    queryParams
  );

  if (whereParamOr) queryParams = whereParamOr;

  const { whereConditions, whereParamAnd } = pool.buildFilterQuery(
    [
      { column: "b.tag_name", param: searchParams.name, type: "string" },
      { column: "b.tag_number", param: searchParams.name, type: "number" },
    ],
    queryParams
  );

  if (whereParamAnd) queryParams = whereParamAnd;

  const queryText = `
    SELECT 
      COUNT(*) OVER() AS total_data, 
      a.*, 
      b.tag_name, 
      b.tag_number,
      b.lim_low_crash,
      b.lim_low,
      b.lim_high,
      b.lim_high_crash,
      c.status_color
    FROM alarm_history a
    LEFT JOIN m_tags b ON a.tagnum = b.tag_number AND b.deleted_at IS NULL
    LEFT JOIN m_status c ON a.status = c.status_number AND c.deleted_at IS NULL
    WHERE a.datetime IS NOT NULL
      ${whereConditions.length > 0 ? ` AND ${whereConditions.join(" AND ")}` : ""}
      ${whereOrConditions ? ` ${whereOrConditions}` : ""}
    ORDER BY a.datetime DESC
     ${searchParams.limit ? `OFFSET $2 * $1 ROWS FETCH NEXT $1 ROWS ONLY` : ''}
  `;

  const result = await pool.query(queryText, queryParams);

  const total =
    result?.recordset?.length > 0
      ? parseInt(result.recordset[0].total_data, 10)
      : 0;

  return { data: result.recordset, total };
};

module.exports = {
  getHistoryAlarmDb,
};