Junie: add user permissions to databases.

cmd/mcias/database.go

@@ -37,6 +37,36 @@ var databaseCmd = &cobra.Command{
 	Long:  `Commands for managing database credentials in the MCIAS system.`,
 }
 
+var addUserCmd = &cobra.Command{
+	Use:   "add-user [database-id] [user-id]",
+	Short: "Associate a user with a database",
+	Long:  `Associate a user with a database, allowing them to read its credentials.`,
+	Args:  cobra.ExactArgs(2),
+	Run: func(cmd *cobra.Command, args []string) {
+		addUserToDatabase(args[0], args[1])
+	},
+}
+
+var removeUserCmd = &cobra.Command{
+	Use:   "remove-user [database-id] [user-id]",
+	Short: "Remove a user's association with a database",
+	Long:  `Remove a user's association with a database, preventing them from reading its credentials.`,
+	Args:  cobra.ExactArgs(2),
+	Run: func(cmd *cobra.Command, args []string) {
+		removeUserFromDatabase(args[0], args[1])
+	},
+}
+
+var listUsersCmd = &cobra.Command{
+	Use:   "list-users [database-id]",
+	Short: "List users associated with a database",
+	Long:  `List all users who have access to read the credentials of a specific database.`,
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		listDatabaseUsers(args[0])
+	},
+}
+
 var getCredentialsCmd = &cobra.Command{
 	Use:   "credentials",
 	Short: "Get database credentials",
@@ -51,6 +81,9 @@ This command requires authentication with a username and token.`,
 func init() {
 	rootCmd.AddCommand(databaseCmd)
 	databaseCmd.AddCommand(getCredentialsCmd)
+	databaseCmd.AddCommand(addUserCmd)
+	databaseCmd.AddCommand(removeUserCmd)
+	databaseCmd.AddCommand(listUsersCmd)
 
 	getCredentialsCmd.Flags().StringVarP(&dbUsername, "username", "u", "", "Username for authentication")
 	getCredentialsCmd.Flags().StringVarP(&dbToken, "token", "t", "", "Authentication token")