Add user list command (#427)

Co-authored-by: Matti R <matti@mdranta.net>
Co-authored-by: Norwin <noerw@noreply.gitea.io>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Norwin <git@nroo.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/427
Reviewed-by: Norwin <noerw@noreply.gitea.io>
Reviewed-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-committed-by: techknowlogick <techknowlogick@gitea.io>

cmd/admin.go

@@ -0,0 +1,55 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package cmd
+
+import (
+	"code.gitea.io/tea/cmd/admin/users"
+	"code.gitea.io/tea/modules/context"
+	"code.gitea.io/tea/modules/print"
+	"github.com/urfave/cli/v2"
+)
+
+// CmdAdmin represents the namespace of admin commands.
+// The command itself has no functionality, but hosts subcommands.
+var CmdAdmin = cli.Command{
+	Name:     "admin",
+	Usage:    "Operations requiring admin access on the Gitea instance",
+	Aliases:  []string{"a"},
+	Category: catMisc,
+	Action: func(cmd *cli.Context) error {
+		return cli.ShowSubcommandHelp(cmd)
+	},
+	Subcommands: []*cli.Command{
+		&cmdAdminUsers,
+	},
+}
+
+var cmdAdminUsers = cli.Command{
+	Name:    "users",
+	Aliases: []string{"u"},
+	Usage:   "Manage registered users",
+	Action: func(ctx *cli.Context) error {
+		if ctx.Args().Len() == 1 {
+			return runAdminUserDetail(ctx, ctx.Args().First())
+		}
+		return users.RunUserList(ctx)
+	},
+	Subcommands: []*cli.Command{
+		&users.CmdUserList,
+	},
+	Flags: users.CmdUserList.Flags,
+}
+
+func runAdminUserDetail(cmd *cli.Context, u string) error {
+	ctx := context.InitCommand(cmd)
+	client := ctx.Login.Client()
+	user, _, err := client.GetUserInfo(u)
+	if err != nil {
+		return err
+	}
+
+	print.UserDetails(user)
+	return nil
+}