Update main.go

Author: michplunkett

cmd/deleteRedditHistory/main.go

@@ -6,13 +6,38 @@
 
 package main
 
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
 type envVars struct {
 	appID        string
 	appSecret    string
 	userName     string
 	userPassword string
 }
 
+func arrayHasNoEmptyStrings(envVars []string) bool {
+	for _, value := range envVars {
+		if value == "" {
+			return false
+		}
+	}
+
+	return true
+}
+
 func main() {
+	e := envVars{
+		os.Getenv("REDDIT_APP_ID"),
+		os.Getenv("REDDIT_SECRET"),
+		os.Getenv("REDDIT_USER_ID"),
+		os.Getenv("REDDIT_USER_PASSWORD"),
+	}
 
+	if !arrayHasNoEmptyStrings([]string{e.appID, e.appSecret, e.userName, e.userPassword}) {
+		log.Fatal(fmt.Errorf("one of the last.fm environment variables is not present in your system"))
+	}
 }