📜 docs: update docs and command to get last rate of a currency

Signed-off-by: Wesley Werneck <[email protected]>

README.md

@@ -24,28 +24,27 @@ Usage of brl-rate-get:
         To get a range of closing currency rates
 ```
 
-## To use
+## How to use the -get command
 
-To get yesterday close of a currency
+To get last rate of a currency
 
 ```bash 
 brl-rate-get -get usd
-
-2023/11/04 21:27:27 Found 5 records of price..
-2023/11/04 21:27:27 Found 1 records of fechamento price..
+2023/11/05 09:17:38 Found 5 records of price..
 
 ____________________________________
 |#######====================#######|
-|#  BRL          USD              #|
+|#  BRL          eur              #|
 |#         ====                   #|
-|#               Buy:   4.8904    #|
-|#  1,00         Sell:  4.8912    #|
+|#               Buy:   5.2474    #|
+|#  1,00         Sell:  5.2500    #|
 |#                                #|
 |##==============================##|
-------------------------------------
+|    Rate Date   2023-11-03        |
+ ----------------------------------
 ```
 
-## To use
+## How to use the -range command
 
 To get a range of data from April first until April 10 use
 

main.go

@@ -5,14 +5,18 @@ import (
 	"fmt"
 	"os"
 	"strings"
+	"time"
+
 	"github.com/uelei/brl-rate-get/pkg"
 )
 
 func handle_get(currency string) {
 
 	yesterday := brlrateget.GenerateYesterdayString()
 
-	rates := brlrateget.MakeRangeRequest(yesterday, yesterday, currency)
+	currentTime := time.Now()
+
+	rates := brlrateget.MakeRangeRequest(yesterday, currentTime, strings.ToUpper(currency), false)
 
 	brlrateget.FormatGetResult(rates, currency)
 }
@@ -32,7 +36,7 @@ func handle_range(args []string) {
 
 	currency := args[0]
 
-	rates := brlrateget.MakeRangeRequest(start_date, end_date, strings.ToUpper(currency))
+	rates := brlrateget.MakeRangeRequest(start_date, end_date, strings.ToUpper(currency), true)
 	filename := fmt.Sprintf("%s_brl_%s-%s.csv", currency,
 		start_date.Format("2006-01-02"), end_date.Format("2006-01-02"))
 	brlrateget.WriteResultsToCSV(rates, filename)
@@ -55,7 +59,7 @@ func main() {
 	case *rangeCmd:
 		handle_range(flag.Args())
 	case *getCmd:
-		handle_get(strings.ToUpper(flag.Args()[0]))
+		handle_get(flag.Args()[0])
 	default:
 		fmt.Println("You must pass a command")
 	}

pkg/client.go

@@ -18,7 +18,7 @@ func format_url(base_url string, currency string, start_data string, end_data st
 	return formatedUrl
 }
 
-func MakeRangeRequest(startDate time.Time, endDate time.Time, currency string) []DayValues {
+func MakeRangeRequest(startDate time.Time, endDate time.Time, currency string, filter bool) []DayValues {
 
 	formatedUrl := format_url("", currency, FormatDateToBC(startDate), FormatDateToBC(endDate))
 	resp, err := GetDataFromUrl(formatedUrl)
@@ -31,16 +31,19 @@ func MakeRangeRequest(startDate time.Time, endDate time.Time, currency string) [
 	if err := json.Unmarshal(resp, &result); err != nil {
 		panic(err)
 	}
+
 	log.Printf("Found %d records of price..\n", len(result.Value))
 
 	filtered := []DayValues{}
 
 	for i := range result.Value {
-		if result.Value[i].TipoBoletim == "Fechamento" {
+		if (result.Value[i].TipoBoletim == "Fechamento") || (filter == false) {
 			filtered = append(filtered, DayValues{CotacaoCompra: result.Value[i].CotacaoCompra, CotacaoVenda: result.Value[i].CotacaoVenda, DataHoraCotacao: result.Value[i].DataHoraCotacao})
 		}
 	}
 
-	log.Printf("Found %d records of fechamento price..\n", len(filtered))
+	if filter {
+		log.Printf("Found %d records of fechamento price..\n", len(filtered))
+	}
 	return filtered
 }

pkg/lib.go

@@ -14,7 +14,7 @@ func GenerateYesterdayString() time.Time {
 	currentTime := time.Now()
 
 	// Calculate yesterday's date
-	yesterday := currentTime.AddDate(0, 0, -1)
+	yesterday := currentTime.AddDate(0, 0, -2)
 
 	return yesterday
 }
@@ -56,21 +56,27 @@ func ParseStringToDate(dateString string) time.Time {
 		fmt.Println(error)
 		panic(error)
 	}
-
 	return date
 }
 
+func PadNumberWithZero(value float64) string {
+    return fmt.Sprintf("%.4f", value)
+}
+
 func FormatGetResult(rates []DayValues, currency string) {
 
+	rate := rates[len(rates)-1]
+
 	fmt.Println("")
 	fmt.Println("____________________________________")
 	fmt.Println("|#######====================#######|")
 	fmt.Println("|#  BRL         ", currency, "             #|")
 	fmt.Println("|#         ====                   #|")
-	fmt.Println("|#               Buy:  ", rates[0].CotacaoCompra, "   #|")
-	fmt.Println("|#  1,00         Sell: ", rates[0].CotacaoVenda, "   #|")
+	fmt.Println("|#               Buy:  ", PadNumberWithZero(rate.CotacaoCompra), "   #|")
+	fmt.Println("|#  1,00         Sell: ", PadNumberWithZero(rate.CotacaoVenda), "   #|")
 	fmt.Println("|#                                #|")
 	fmt.Println("|##==============================##|")
-	fmt.Println("------------------------------------")
+	fmt.Println("|    Rate Date  ", rate.DataHoraCotacao[:10] , "       |")
+	fmt.Println(" ---------------------------------- ")
 
 }

pkg/lib_test.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"testing"
 	"time"
+
 	lib "github.com/uelei/brl-rate-get/pkg"
 )
 
@@ -41,7 +42,7 @@ func TestGenerateYesterdayString(t *testing.T) {
 
 	currentTime := time.Now()
 
-	if result.Day() != currentTime.Day()-1 {
+	if result.Day() != currentTime.Day()-2 {
 		t.Fatal("error creating yesterday date")
 	}
 }
@@ -63,3 +64,13 @@ func TestParseStringToDate(t *testing.T) {
 	}
 
 }
+
+func TestPadNumberWithZero(t *testing.T) {
+
+	value := lib.PadNumberWithZero(3.1415)
+
+	if value != "3.1415" {
+		t.Fatal("Error padding string", value)
+	}
+
+}