Initial setup

pkg/errors/errors.go

@@ -0,0 +1,10 @@
+package errors
+
+import "errors"
+
+var (
+    ErrUserNotFound = errors.New("user not found")
+    ErrInvalidEmail = errors.New("invalid email")
+    // Add other custom errors here
+)
+

pkg/logger/logger.go

@@ -0,0 +1,24 @@
+package logger
+
+import (
+    "log"
+    "os"
+)
+
+var (
+    Info    *log.Logger
+    Warning *log.Logger
+    Error   *log.Logger
+)
+
+func init() {
+    file, err := os.OpenFile("app.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    Info = log.New(file, "INFO: ", log.Ldate|log.Ltime|log.Lshortfile)
+    Warning = log.New(file, "WARNING: ", log.Ldate|log.Ltime|log.Lshortfile)
+    Error = log.New(file, "ERROR: ", log.Ldate|log.Ltime|log.Lshortfile)
+}
+