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Update Dockerfile #3

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0a0c589
Update Dockerfile
kajeagentspi May 16, 2020
4531f1d
Update transferwise.go
kajeagentspi Jun 12, 2020
30bd51b
Update transferwise.go
kajeagentspi Jun 12, 2020
ba239e1
Modified code to support multiple transfers
kajeagentspi Oct 21, 2020
169eff0
Fixed variable names
kajeagentspi Oct 21, 2020
8438660
Fixed variable names 2
kajeagentspi Oct 21, 2020
45eac20
Fixed variable names 3
kajeagentspi Oct 21, 2020
fbfd0f5
Fixed variable names 4
kajeagentspi Oct 21, 2020
201e2c6
Fixed variable names 5
kajeagentspi Oct 21, 2020
ff0918a
Removed return inside for loop
kajeagentspi Oct 21, 2020
17a00b8
Fixed double status print
kajeagentspi Oct 21, 2020
54e1ae2
Added currency assumption
kajeagentspi Oct 21, 2020
7c62cc7
fix
kajeagentspi Oct 21, 2020
6cea382
fix
kajeagentspi Oct 21, 2020
7ad0a29
removed fixes
kajeagentspi Oct 21, 2020
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2 changes: 1 addition & 1 deletion Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@ RUN cp /build/main .
FROM alpine:latest

# alpine:latest doesnt have the certs to make https requests we need to add it manually
RUN apk add --no-cache ca-certificates openssl
RUN apk add --no-cache ca-certificates openssl tzdata

COPY --from=builder /dist/main /

Expand Down
164 changes: 84 additions & 80 deletions transferwise.go
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Original file line number Diff line number Diff line change
Expand Up @@ -74,117 +74,121 @@ func checkAndProcess() {
return
}

result, transfer, liveRate, err := compareRates()
err := compareRates()
if err != nil {
log.Println(err)
return
}
if !result {
log.Printf("|| NO ACTION NEEDED, Live Rate: %v || Transfer ID: %v | {%v} --> {%v} | Booked Rate: %v | Amount: %v ||",
liveRate, transfer.Id, transfer.SourceCurrency, transfer.TargetCurrency, transfer.Rate, transfer.SourceAmount)
return
}
// if !result {
// log.Printf("|| NO ACTION NEEDED, Live Rate: %v || Transfer ID: %v | {%v} --> {%v} | Booked Rate: %v | Amount: %v | Total w/o Fees: %v ||",
// liveRate, transfer.Id, transfer.SourceCurrency, transfer.TargetCurrency, transfer.Rate, transfer.SourceAmount, transfer.Rate * transfer.SourceAmount)
// return
// }

newTransfer, err := createTransfer(transfer)
if err != nil || !result {
log.Println(err)
return
}
// newTransfer, err := createTransfer(transfer)
// if err != nil || !result {
// log.Println(err)
// return
// }

log.Printf("|| NEW TRANSFER BOOKED || Transfer ID: %v | {%v} --> {%v} | Rate: %v | Amount: %v ||",
newTransfer.Id, newTransfer.SourceCurrency, newTransfer.TargetCurrency, newTransfer.Rate, newTransfer.SourceAmount)
// log.Printf("|| NEW TRANSFER BOOKED || Transfer ID: %v | {%v} --> {%v} | Rate: %v | Amount: %v | Total w/o Fees: %v ||",
// newTransfer.Id, newTransfer.SourceCurrency, newTransfer.TargetCurrency, newTransfer.Rate, newTransfer.SourceAmount, newTransfer.Rate * newTransfer.SourceAmount)
}

// Send reminder mail in case the best quote is about to expire
func sendExpiryReminderMail() {
empty := Transfer{}
bookedTransfer, err := getBookedTransfer()
if err != nil || bookedTransfer == empty {
log.Printf("sendExpiryMail: %v", err)
}

quoteDetail, err := getDetailByQuoteId(bookedTransfer.QuoteUuid)
if err != nil {
bookedTransfers, err := getBookedTransfers()
if err != nil || len(bookedTransfers) == 0 {
log.Printf("sendExpiryMail: %v", err)
}

expiryTime, err := time.Parse(time.RFC3339, quoteDetail.RateExpirationTime)
if err != nil {
log.Printf("sendExpiryMail: %v", err)
}

if expiryTime.Sub(time.Now().UTC()).Hours() < expiryPeriodInHours {
body := fmt.Sprintf(
reminderMailBody,
expiryTime.Format("2006-01-02 15:04:05 UTC"),
bookedTransfer.Id,
bookedTransfer.SourceCurrency,
bookedTransfer.TargetCurrency,
bookedTransfer.Rate,
bookedTransfer.SourceCurrency,
bookedTransfer.SourceAmount,
)
err := sendMail(reminderMailSubject, []byte(body))
for i := range bookedTransfers {
quoteDetail, err := getDetailByQuoteId(bookedTransfers[i].QuoteUuid)
if err != nil {
log.Printf("sendExpiryMail: %v", err)
}
expiryTime, err := time.Parse(time.RFC3339, quoteDetail.RateExpirationTime)
if err != nil {
log.Printf("sendExpiryMail: %v", err)
}
if expiryTime.Sub(time.Now().UTC()).Hours() < expiryPeriodInHours {
body := fmt.Sprintf(
reminderMailBody,
expiryTime.Format("2006-01-02 15:04:05 UTC"),
bookedTransfers[i].Id,
bookedTransfers[i].SourceCurrency,
bookedTransfers[i].TargetCurrency,
bookedTransfers[i].Rate,
bookedTransfers[i].SourceCurrency,
bookedTransfers[i].SourceAmount,
)
err := sendMail(reminderMailSubject, []byte(body))
if err != nil {
log.Printf("sendExpiryMail: %v", err)
}
}
}
return
}

func compareRates() (result bool, bookedTransfer Transfer, currentRate float64, err error) {
empty := Transfer{}
bookedTransfer, err = getBookedTransfer()
if err != nil || bookedTransfer == empty {
return false, empty, 0, fmt.Errorf("compareRates: %v", err)
func compareRates() (err error) {
bookedTransfers, err := getBookedTransfers()
if err != nil || len(bookedTransfers) == 0 {
return fmt.Errorf("compareRates: %v", err)
}

liveRate, err := getLiveRate(bookedTransfer.SourceCurrency, bookedTransfer.TargetCurrency)
if err != nil || liveRate == 0 {
return false, empty, 0, fmt.Errorf("compareRates: %v", err)
}

marginRate, err := strconv.ParseFloat(marginVar, 64)
if err != nil {
return false, empty, 0, fmt.Errorf("compareRates: %v", err)
}

bookedRate := bookedTransfer.Rate
if liveRate > bookedRate && (liveRate - bookedRate >= marginRate) {
return true, bookedTransfer, 0, nil
// assume all transfer currencies are the same
liveRate, err := getLiveRate(bookedTransfers[0].SourceCurrency, bookedTransfers[0].TargetCurrency)
for i := range bookedTransfers {
if err != nil || liveRate == 0 {
return fmt.Errorf("compareRates: %v", err)
}
marginRate, err := strconv.ParseFloat(marginVar, 64)
if err != nil {
return fmt.Errorf("compareRates: %v", err)
}
bookedRate := bookedTransfers[i].Rate
if liveRate > bookedRate && (liveRate - bookedRate >= marginRate) {
newTransfer, err := createTransfer(bookedTransfers[i])
if err != nil {
return fmt.Errorf("compareRates: %v", err)
}
log.Printf("|| NEW TRANSFER BOOKED || Transfer ID: %v | {%v} --> {%v} | Rate: %v | Amount: %v | Total w/o Fees: %v ||",
newTransfer.Id, newTransfer.SourceCurrency, newTransfer.TargetCurrency, newTransfer.Rate, newTransfer.SourceAmount, newTransfer.Rate * newTransfer.SourceAmount)
}else{
log.Printf("|| NO ACTION NEEDED, Live Rate: %v || Transfer ID: %v | {%v} --> {%v} | Booked Rate: %v | Amount: %v | Total w/o Fees: %v ||",
liveRate, bookedTransfers[i].Id, bookedTransfers[i].SourceCurrency, bookedTransfers[i].TargetCurrency, bookedTransfers[i].Rate, bookedTransfers[i].SourceAmount, bookedTransfers[i].Rate * bookedTransfers[i].SourceAmount)
}
}

return false, bookedTransfer, liveRate, nil
return nil
}

func getBookedTransfer() (Transfer, error) {
func getBookedTransfers() ([]Transfer, error) {
params := url.Values{"limit": {"3"}, "offset": {"0"}, "status": {"incoming_payment_waiting"}}
url := &url.URL{RawQuery: params.Encode(), Host: hostVar, Scheme: "https", Path: transfersAPIPath}


var bookedTransfers []Transfer
response, code, err := callExternalAPI(http.MethodGet, url.String(), nil)
if err != nil || code != http.StatusOK {
return Transfer{}, fmt.Errorf("error GET transfer list API: %v : %v", code, err)
return bookedTransfers, fmt.Errorf("error GET transfer list API: %v : %v", code, err)
}

var transfersList []Transfer
err = mapstructure.Decode(response, &transfersList)
err = mapstructure.Decode(response, &bookedTransfers)
if err != nil {
return Transfer{}, fmt.Errorf("error decoding response: %v", err)
return bookedTransfers, fmt.Errorf("error decoding response: %v", err)
}

if len(transfersList) == 0 {
return Transfer{}, fmt.Errorf(ErrNoCurrentTransferFound)
if len(bookedTransfers) == 0 {
return bookedTransfers, fmt.Errorf(ErrNoCurrentTransferFound)
}

bookedTransfer := findBestTransfer(transfersList)
quoteDetail, err := getDetailByQuoteId(bookedTransfer.QuoteUuid)
if err != nil {
return Transfer{}, fmt.Errorf("getBookedTransfer: %v", err)
for i := range bookedTransfers {
quoteDetail, err := getDetailByQuoteId(bookedTransfers[i].QuoteUuid)
if err != nil {
return bookedTransfers, fmt.Errorf("getBookedTransfer: %v", err)
}
bookedTransfers[i].SourceAmount = quoteDetail.SourceAmount
bookedTransfers[i].Profile = quoteDetail.Profile
}
bookedTransfer.SourceAmount = quoteDetail.SourceAmount
bookedTransfer.Profile = quoteDetail.Profile

return bookedTransfer, nil
return bookedTransfers, nil
}

func getLiveRate(source string, target string) (float64, error) {
Expand Down Expand Up @@ -318,10 +322,10 @@ func callExternalAPI(method string, url string, reqBody []byte) (response interf
return
}

func findBestTransfer(transferList []Transfer) (bestTransfer Transfer){
for i := range transferList {
if i==0 || bestTransfer.Rate < transferList[i].Rate {
bestTransfer = transferList[i]
func findBestTransfer(bookedTransfers []Transfer) (bestTransfer Transfer){
for i := range bookedTransfers {
if i==0 || bestTransfer.Rate < bookedTransfers[i].Rate {
bestTransfer = bookedTransfers[i]
}
}
return
Expand Down