added authentication with system's keyring

1 files changed, 59 insertions, 0 deletions

diff --git a/auth/auth.go b/auth/auth.go
new file mode 100644
index 0000000..c3b2cfd
--- /dev/null
+++ b/auth/auth.go
@@ -0,0 +1,59 @@
+/*
+macli - Unofficial CLI-Based MyAnimeList Client
+Copyright © 2022 Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package auth
+
+import (
+  "os"
+  "os/user"
+  "fmt"
+  "github.com/zalando/go-keyring"
+)
+
+var serviceName string = "macli"
+var userName string
+
+func init() {
+  // get user and set username
+  currentUser, err := user.Current()
+  if err != nil {
+    fmt.Println("Error getting current user's info", err.Error())
+    os.Exit(1)
+  }
+  userName = currentUser.Username
+}
+
+func Login(secret string) {
+  err := keyring.Set(serviceName, userName, secret)
+  if err != nil {
+    fmt.Println("Error while writing access token to keychain", err)
+    os.Exit(1)
+  }
+}
+
+func GetToken() string {
+  // get mal secret from keyring
+  secret, err := keyring.Get(serviceName, userName)
+  if err != nil {
+    fmt.Println("\x1b[31mError while reading access token from keychain:", err.Error(), "\x1b[0m")
+    fmt.Println("Run `macli login` first to authenticate with your MyAnimeList API Token")
+    os.Exit(1)
+  }
+
+  return secret
+}