parallelize the calls

main.go

@@ -10,6 +10,7 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -93,18 +94,30 @@ func getCategories() ([]Transaction, error) {
 		return []Transaction{}, fmt.Errorf("error reading csv: %w", err)
 	}
 
+	waitGroup := sync.WaitGroup{}
+	transactionChan := make(chan Transaction)
+
 	var finalTransactions []Transaction
 	count := 0
-	for _, line := range transactions {
-		//if count > 100 {
-		//	break
-		//}
+	fmt.Printf("Transaction Count: %v\n", len(transactions))
+	for _, transaction := range transactions {
+		if count != 0 && count%100 == 0 {
+			fmt.Printf("At %v waiting...\n", count)
+			time.Sleep(60 * time.Second)
+			fmt.Println("starting... next 100")
+		}
+		waitGroup.Add(1)
+		go func(line Transaction, wg *sync.WaitGroup, transactionChan chan Transaction, count int) {
+			defer wg.Done()
 			fmt.Println(line)
 			transaction, err := parseTransaction(line.TransactionName)
 			if err != nil {
 				// continue if parsing error
 				fmt.Println(err)
+				fmt.Println("done with error")
+				return
 			}
+			fmt.Println("done parsing")
 			//fmt.Printf("%+v\n", transaction)
 			combinedTransaction := Transaction{
 				Category:        transaction.Category,
@@ -113,9 +126,21 @@ func getCategories() ([]Transaction, error) {
 				TransactionName: line.TransactionName,
 				IsoDate:         line.IsoDate,
 			}
-		finalTransactions = append(finalTransactions, combinedTransaction)
+			transactionChan <- combinedTransaction
+			fmt.Println("done end of function")
+		}(transaction, &waitGroup, transactionChan, count)
 		count++
 	}
+	// Start a goroutine to receive values from the transactionChan
+	go func() {
+		for combinedTransaction := range transactionChan {
+			finalTransactions = append(finalTransactions, combinedTransaction)
+		}
+	}()
+	fmt.Println(count)
+	fmt.Println("waiting...")
+	waitGroup.Wait()
+	close(transactionChan)
 
 	jsonTransactions, err := json.Marshal(finalTransactions)
 	if err != nil {
@@ -201,6 +226,12 @@ Expected output format:
 		)
 
 		if err != nil {
+			// if 429, wait and try again
+			if strings.Contains(err.Error(), "429") {
+				fmt.Println("429 error, waiting 5 seconds...")
+				time.Sleep(5 * time.Second)
+				continue
+			}
 			return Transaction{}, fmt.Errorf("ChatCompletion request error: %w", err)
 		}
 		fmt.Println(resp.Choices[0].Message.Content)