create logistic transaction's transformer

Author: AsadSaleh

transfrom-logistic-card.js

@@ -0,0 +1,241 @@
+const originalData = [
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-11-19T13:44:26+07:00",
+    reference: "",
+    amount: 4200000,
+    transaction_id: "RY7SF5XTXUFW",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-11-18T12:13:14+07:00",
+    reference: "",
+    amount: 5500000,
+    transaction_id: "BGVXK4DM6AHE",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-18T11:40:09+07:00",
+    reference: "",
+    amount: 5200000,
+    transaction_id: "6CKNDWE3QCYR",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-18T11:37:26+07:00",
+    reference: "",
+    amount: 6390000,
+    transaction_id: "KZFQYWGGW4DP",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-09-18T11:17:58+07:00",
+    reference: "",
+    amount: 100000,
+    transaction_id: "C49GZVXNZC64",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-09-18T10:43:48+07:00",
+    reference: "",
+    amount: 3550000,
+    transaction_id: "BSFRH5JXAV5L",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-18T09:45:28+07:00",
+    reference: "",
+    amount: 3650000,
+    transaction_id: "9YWUJK35MQKC",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-08-18T09:24:25+07:00",
+    reference: "",
+    amount: 5950000,
+    transaction_id: "JGSVHFNUGQ9P",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-18T09:22:41+07:00",
+    reference: "",
+    amount: 100000,
+    transaction_id: "BV72ZXHRPUVH",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "Testing Aspire Debit",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-17T11:08:12+07:00",
+    reference: "",
+    amount: 14400000,
+    transaction_id: "XLTSRCVZMRVB",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "Testing Aspire Debit",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-10-17T10:53:26+07:00",
+    reference: "",
+    amount: 100000,
+    transaction_id: "LCSXZYGP5WWE",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+  {
+    school_id: "6bf8539b-2468-44bf-a06c-eb92484a5695",
+    card_id: "5829ada0-cdc0-40d0-888e-4c7c503bfa7e",
+    idn_code: "106425",
+    card_holder_id: "e459bd21-bbb7-4b9a-acc3-09686af37a70",
+    transaction_date: "2022-12-17T10:51:18+07:00",
+    reference: "",
+    amount: 100000,
+    transaction_id: "UDEYVB2FCW95",
+    merchant: "Gojek",
+    category: "Travel",
+  },
+];
+
+const monthNames = [
+  "Januari",
+  "Februari",
+  "Maret",
+  "April",
+  "Mei",
+  "Juni",
+  "Juli",
+  "Agustus",
+  "September",
+  "Oktober",
+  "November",
+  "Desember",
+];
+
+// Helper function, given a JS Date, it will return the name.
+// Example: "November"
+function getMonthName(date) {
+  return monthNames[date.getMonth()];
+}
+
+// Helper function, given a datestring, eg., '2022-10-17T21:07:05+07:00',
+// it will return month and year with format: ["November", "2022"]
+function getMonthAndYear(datestring) {
+  const date = new Date(datestring);
+  const currYear = date.getFullYear();
+  const currMonth = getMonthName(date);
+  return [currMonth, currYear];
+}
+
+// Helper function to transform Logistic Card transaction.
+// Given array of transactions, it will return a monthly-grouped transactions.
+// Return with shape of :
+// const sample = {
+//   "2022": [
+//      {
+//       "month": "Januari",
+//       "total_amount": 750000,
+//       "transactions": [Trx1, Trx2, Trx3, ...]
+//     },
+//     {
+//       "month": "Februari",
+//       "total_amount": 840000,
+//       "transactions": [Trx1, Trx2, Trx3, ...]
+//     }
+//   ]
+// }
+const transformCardTransactions = (input) => {
+  if (!Array.isArray(input)) return {};
+  return input
+    .sort(
+      (a, b) =>
+        new Date(a.transaction_date).getTime() -
+        new Date(b.transaction_date).getTime()
+    )
+    .reduce((finalObj, cur) => {
+      const [currMonth, currYear] = getMonthAndYear(cur.transaction_date);
+
+      // 3. if year and month already exist:
+      if (finalObj[currYear] != null) {
+        if (finalObj[currYear].findIndex((el) => el.month === currMonth) > -1) {
+          const index = finalObj[currYear].findIndex(
+            (el) => el.month === currMonth
+          );
+
+          finalObj[currYear][index].total_amount += cur.amount;
+          finalObj[currYear][index].transactions.push(cur);
+          return finalObj;
+        }
+
+        // 2. if year exist, but new month:
+        finalObj[currYear].push({
+          month: currMonth,
+          total_amount: cur.amount,
+          transactions: [cur],
+        });
+        return finalObj;
+      }
+
+      // 1. if new year and new month:
+      finalObj[currYear] = [
+        {
+          month: currMonth,
+          total_amount: cur.amount,
+          transactions: [cur],
+        },
+      ];
+      return finalObj;
+    }, {});
+};
+
+const groupedData = transformCardTransactions(originalData);
+
+console.log(JSON.stringify(groupedData, null, 2));