move the gitea admin subcommands into separate files (#27307)

As title.
Probably it's better to put those sub cmd to different dirs. Will do
that in the future.

cmd/admin_auth.go

@@ -0,0 +1,109 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"text/tabwriter"
+
+	auth_model "code.gitea.io/gitea/models/auth"
+	auth_service "code.gitea.io/gitea/services/auth"
+
+	"github.com/urfave/cli/v2"
+)
+
+var (
+	microcmdAuthDelete = &cli.Command{
+		Name:   "delete",
+		Usage:  "Delete specific auth source",
+		Flags:  []cli.Flag{idFlag},
+		Action: runDeleteAuth,
+	}
+	microcmdAuthList = &cli.Command{
+		Name:   "list",
+		Usage:  "List auth sources",
+		Action: runListAuth,
+		Flags: []cli.Flag{
+			&cli.IntFlag{
+				Name:  "min-width",
+				Usage: "Minimal cell width including any padding for the formatted table",
+				Value: 0,
+			},
+			&cli.IntFlag{
+				Name:  "tab-width",
+				Usage: "width of tab characters in formatted table (equivalent number of spaces)",
+				Value: 8,
+			},
+			&cli.IntFlag{
+				Name:  "padding",
+				Usage: "padding added to a cell before computing its width",
+				Value: 1,
+			},
+			&cli.StringFlag{
+				Name:  "pad-char",
+				Usage: `ASCII char used for padding if padchar == '\\t', the Writer will assume that the width of a '\\t' in the formatted output is tabwidth, and cells are left-aligned independent of align_left (for correct-looking results, tabwidth must correspond to the tab width in the viewer displaying the result)`,
+				Value: "\t",
+			},
+			&cli.BoolFlag{
+				Name:  "vertical-bars",
+				Usage: "Set to true to print vertical bars between columns",
+			},
+		},
+	}
+)
+
+func runListAuth(c *cli.Context) error {
+	ctx, cancel := installSignals()
+	defer cancel()
+
+	if err := initDB(ctx); err != nil {
+		return err
+	}
+
+	authSources, err := auth_model.Sources()
+	if err != nil {
+		return err
+	}
+
+	flags := tabwriter.AlignRight
+	if c.Bool("vertical-bars") {
+		flags |= tabwriter.Debug
+	}
+
+	padChar := byte('\t')
+	if len(c.String("pad-char")) > 0 {
+		padChar = c.String("pad-char")[0]
+	}
+
+	// loop through each source and print
+	w := tabwriter.NewWriter(os.Stdout, c.Int("min-width"), c.Int("tab-width"), c.Int("padding"), padChar, flags)
+	fmt.Fprintf(w, "ID\tName\tType\tEnabled\n")
+	for _, source := range authSources {
+		fmt.Fprintf(w, "%d\t%s\t%s\t%t\n", source.ID, source.Name, source.Type.String(), source.IsActive)
+	}
+	w.Flush()
+
+	return nil
+}
+
+func runDeleteAuth(c *cli.Context) error {
+	if !c.IsSet("id") {
+		return fmt.Errorf("--id flag is missing")
+	}
+
+	ctx, cancel := installSignals()
+	defer cancel()
+
+	if err := initDB(ctx); err != nil {
+		return err
+	}
+
+	source, err := auth_model.GetSourceByID(c.Int64("id"))
+	if err != nil {
+		return err
+	}
+
+	return auth_service.DeleteSource(source)
+}