@tucmc/hazel/src/examples/basics.ts

Clubs Data Processing Framework

import type { Debugger, EvaluateCollectionType } from '../lib'
import { ClubRecord, DMap, FirestoreCollection, ID } from '../lib'

export const basicExampleSnippet = async (debug: Debugger) => {
  /*
  This example demonstrates the basic usages of lab resources.
  By utilising Resource Control Class ex. Collection()
  and Data Controls ex. ClubRecord() and DMap()
   */

  // Initialise data collection
  const evalColl = new FirestoreCollection<EvaluateCollectionType>('evaluate')

  // Load data from the local cache and fetch if there was no cache.
  const evalData = await evalColl.readFromCache(true)
  if (!evalData) return

  const evalRecords = new ClubRecord(evalData.getRecord())

  // Compare keys with systemClubs using keyDiff() method.
  const missing = ID.systemClubs.keyDiff(evalRecords.keys())
  debug.dump(missing)

  // Merge all sub clubs to main clubs.
  const mainClubRecords = evalRecords.transformToMainClubs()

  /*
  Accessing a key using get() method
  Note: get() method arg should be suggested by the editor (In this case is clubID).
   */
  const clubEvalData = mainClubRecords.get('ก30901')
  if (!clubEvalData) return

  // Encapsulate the record with DMap and access its utility methods.
  debug.dump(new DMap(clubEvalData).size())
}