feat: initial commit

internal/command/admin/flag/flag.go

@@ -0,0 +1,98 @@
+package flag
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strings"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/format"
+	"forge.cadoles.com/cadoles/bouncer/internal/format/table"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli/v2"
+)
+
+func ComposeFlags(flags ...cli.Flag) []cli.Flag {
+	baseFlags := []cli.Flag{
+		&cli.StringFlag{
+			Name:    "server",
+			Aliases: []string{"s"},
+			Usage:   "use `SERVER` as server url",
+			Value:   "http://127.0.0.1:8081",
+		},
+		&cli.StringFlag{
+			Name:    "format",
+			Aliases: []string{"f"},
+			Usage:   fmt.Sprintf("use `FORMAT` as output format (available: %s)", format.Available()),
+			Value:   string(table.Format),
+		},
+		&cli.StringFlag{
+			Name:    "output-mode",
+			Aliases: []string{"m"},
+			Usage:   fmt.Sprintf("use `MODE` as output mode (available: %s)", []format.OutputMode{format.OutputModeCompact, format.OutputModeWide}),
+			Value:   string(format.OutputModeCompact),
+		},
+		&cli.StringFlag{
+			Name:    "token",
+			Aliases: []string{"t"},
+			EnvVars: []string{`BOUNCER_TOKEN`},
+			Usage:   "use `TOKEN` as authentication token",
+		},
+		&cli.StringFlag{
+			Name:      "token-file",
+			EnvVars:   []string{`BOUNCER_TOKEN_FILE`},
+			Usage:     "use `TOKEN_FILE` as file containing the authentication token",
+			Value:     ".bouncer-token",
+			TakesFile: true,
+		},
+	}
+
+	flags = append(flags, baseFlags...)
+
+	return flags
+}
+
+type BaseFlags struct {
+	ServerURL  string
+	Format     format.Format
+	OutputMode format.OutputMode
+	Token      string
+	TokenFile  string
+}
+
+func GetBaseFlags(ctx *cli.Context) *BaseFlags {
+	serverURL := ctx.String("server")
+	rawFormat := ctx.String("format")
+	rawOutputMode := ctx.String("output-mode")
+	tokenFile := ctx.String("token-file")
+	token := ctx.String("token")
+
+	return &BaseFlags{
+		ServerURL:  serverURL,
+		Format:     format.Format(rawFormat),
+		OutputMode: format.OutputMode(rawOutputMode),
+		Token:      token,
+		TokenFile:  tokenFile,
+	}
+}
+
+func GetToken(flags *BaseFlags) (string, error) {
+	if flags.Token != "" {
+		return flags.Token, nil
+	}
+
+	if flags.TokenFile == "" {
+		return "", nil
+	}
+
+	rawToken, err := ioutil.ReadFile(flags.TokenFile)
+	if err != nil && !errors.Is(err, os.ErrNotExist) {
+		return "", errors.WithStack(err)
+	}
+
+	if rawToken == nil {
+		return "", nil
+	}
+
+	return strings.TrimSpace(string(rawToken)), nil
+}

internal/command/admin/flag/util.go

@@ -0,0 +1,11 @@
+package flag
+
+func AsAnySlice[T any](src []T) []any {
+	dst := make([]any, len(src))
+
+	for i, s := range src {
+		dst[i] = s
+	}
+
+	return dst
+}