Add .env file for port

Author: iDevelopThings

.gitignore

@@ -0,0 +1,3 @@
+/.idea/Currencies.iml
+/.idea/modules.xml
+/.idea/vcs.xml

.idea/.gitignore

@@ -5,5 +5,6 @@ go 1.16
 require (
 	github.com/go-redis/redis v6.15.9+incompatible
 	github.com/gorilla/mux v1.8.0
+	github.com/joho/godotenv v1.3.0 // indirect
 	github.com/onsi/gomega v1.13.0 // indirect
 )

go.mod

@@ -22,6 +22,8 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
+github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
 github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=

go.sum

@@ -4,9 +4,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"os"
 	"strings"
-	
+
 	"github.com/gorilla/mux"
+	"github.com/joho/godotenv"
 )
 
 type CurrencyConversion struct {
@@ -22,15 +24,16 @@ type ConversionsResponse struct {
 }
 
 func main() {
-	
+	godotenv.Load()
+
 	InitRedis()
-	
+
 	router := mux.NewRouter()
-	
+
 	router.HandleFunc("/latest", CORS(Latest))
-	
-	fmt.Println("* Running on http://127.0.0.1:3000/")
-	http.ListenAndServe(":3000", router)
+
+	fmt.Println("Running on http://127.0.0.1:" + os.Getenv("PORT"))
+	http.ListenAndServe(":"+os.Getenv("PORT"), router)
 }
 
 func CORS(fn http.HandlerFunc) http.HandlerFunc {
@@ -51,46 +54,46 @@ func CORS(fn http.HandlerFunc) http.HandlerFunc {
 
 func Latest(w http.ResponseWriter, r *http.Request) {
 	baseParam := r.URL.Query().Get("base")
-	
+
 	if baseParam == "" {
 		baseParam = "EUR"
 	}
 	responseData := &ConversionsResponse{
 		Base:       baseParam,
 		Currencies: make(map[string]CurrencyConversion),
 	}
-	
+
 	currenciesMap, err := GetOrUpdateCurrencies()
-	
+
 	if err != nil {
 		http.Error(w, http.StatusText(500), 500)
 		return
 	}
-	
+
 	currencies := *currenciesMap
-	
+
 	for _, currency := range currencies {
 		baseCurrency := currencies[strings.ToUpper(baseParam)]
-		
+
 		if baseParam != "EUR" {
 			currency.Rate = currency.Rate / baseCurrency.Rate
 		}
-		
+
 		responseData.Currencies[currency.Currency] = CurrencyConversion{
 			From:     baseCurrency.Currency,
 			To:       currency.Currency,
 			Rate:     currency.Rate,
 			Currency: currency.Currency,
 		}
 	}
-	
+
 	response, err := json.Marshal(responseData)
-	
+
 	if err != nil {
 		http.Error(w, http.StatusText(500), 500)
 		return
 	}
-	
+
 	w.Header().Set("Content-Type", "application/json")
 	w.Write(response)
 }