From 191699140973afdb206ea10e36972f457b2a6eaa Mon Sep 17 00:00:00 2001
From: Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
Date: Wed, 15 Jun 2022 12:59:42 +0530
Subject: added authentication with system's keyring

---
 auth/auth.go | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 cmd/login.go | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 mal/mal.go   | 17 +++++++----------
 3 files changed, 112 insertions(+), 10 deletions(-)
 create mode 100644 auth/auth.go
 create mode 100644 cmd/login.go

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
+}
diff --git a/cmd/login.go b/cmd/login.go
new file mode 100644
index 0000000..bcecc3f
--- /dev/null
+++ b/cmd/login.go
@@ -0,0 +1,46 @@
+/*
+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 cmd
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/MikunoNaka/macli/ui"
+	"github.com/MikunoNaka/macli/auth"
+)
+
+var loginCmd = &cobra.Command {
+	Use:   "login",
+	Short: "Login with your MyAnimeList client secret",
+	Long: `
+Currently, macli doesn't support logging in.
+You need to manually generate an access token/client secret to authorise
+macli with your MyAnimeList account.
+
+An easy way to generate a token is to use my python script:
+https://github.com/MikunoNaka/mal-authtoken-generator
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		secret := ui.PasswordInput("Enter your client secret: ", "Client secret can't be empty")
+		auth.Login(secret)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(loginCmd)
+}
diff --git a/mal/mal.go b/mal/mal.go
index c693f40..b961bfd 100644
--- a/mal/mal.go
+++ b/mal/mal.go
@@ -19,9 +19,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package mal
 
 import (
-  _ "github.com/joho/godotenv/autoload"
-  "os"
-
+  "github.com/MikunoNaka/macli/auth"
   a "github.com/MikunoNaka/MAL2Go/anime"
   m "github.com/MikunoNaka/MAL2Go/manga"
   ua "github.com/MikunoNaka/MAL2Go/user/anime"
@@ -33,13 +31,12 @@ var mangaClient m.Client
 var userAnimeClient ua.Client
 var userMangaClient um.Client
 
-func init() {
-  // TODO: don't load access token from .env
-  var accessToken = os.Getenv("ACCESS_TOKEN")
+func Init() {
+  secret := auth.GetToken()
 
   // initialise MAL2Go Client(s)
-  animeClient.AuthToken = "Bearer " + accessToken
-  mangaClient.AuthToken = "Bearer " + accessToken
-  userAnimeClient.AuthToken = "Bearer " + accessToken
-  userMangaClient.AuthToken = "Bearer " + accessToken
+  animeClient.AuthToken = "Bearer " + secret
+  mangaClient.AuthToken = "Bearer " + secret
+  userAnimeClient.AuthToken = "Bearer " + secret
+  userMangaClient.AuthToken = "Bearer " + secret
 }
-- 
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