add list command to list all shortlinks

main.go

@@ -139,6 +139,32 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 			w.Write([]byte("500 Internal Server Error"))
 		}
 	}
+
+	if command == "list" {
+		ctx := context.Background()
+		keys, err := client.Keys(ctx, "*").Result()
+		if err != nil {
+			fmt.Println(err)
+			w.WriteHeader(500)
+			w.Write([]byte("500 Internal Server Error"))
+			return
+		}
+
+		resp := ""
+		for _, key := range keys {
+			value, err = client.Get(ctx, key).Result()
+			if err == redis.Nil {
+				w.WriteHeader(500)
+				w.Write([]byte("500 Internal Server Error"))
+				return
+			}
+			resp += key + ":" + value + "\n"
+		}
+
+		w.WriteHeader(200)
+		w.Write([]byte(resp))
+	}
+
 }
 
 func shortlinkHandler(w http.ResponseWriter, r *http.Request) {

susmng.py

@@ -7,6 +7,7 @@ import hashlib
 import pathlib
 import os
 import json
+import sys
 
 
 def get_args():
@@ -64,8 +65,8 @@ def main(args):
                     ).hexdigest()
                 }
             )
-    print(r)
-    print(r.content)
+    print(r, file=sys.stderr)
+    print(r.content.decode().strip())
     return 0