refactor(cmd): replace cobra with stdlib flag

cmd/root.go

@@ -1,18 +1,16 @@
-// Package cmd defines the command-line interface commands
 package cmd
 
 import (
+	"flag"
 	"fmt"
 	"log/slog"
 	"os"
 
 	"github.com/ayn2op/discordo/internal/app"
 	"github.com/ayn2op/discordo/internal/config"
-	"github.com/ayn2op/discordo/internal/consts"
 	"github.com/ayn2op/discordo/internal/keyring"
 	"github.com/ayn2op/discordo/internal/logger"
 	"github.com/diamondburned/arikawa/v3/utils/ws"
-	"github.com/spf13/cobra"
 )
 
 var (
@@ -20,56 +18,47 @@ var (
 	configPath string
 	logPath    string
 	logLevel   string
+)
 
-	rootCmd = &cobra.Command{
-		Use: consts.Name,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			var level slog.Level
-			switch logLevel {
-			case "debug":
-				ws.EnableRawEvents = true
-				level = slog.LevelDebug
-			case "info":
-				level = slog.LevelInfo
-			case "warn":
-				level = slog.LevelWarn
-			case "error":
-				level = slog.LevelError
-			}
-
-			if err := logger.Load(logPath, level); err != nil {
-				return fmt.Errorf("failed to load logger: %w", err)
-			}
-
-			cfg, err := config.Load(configPath)
-			if err != nil {
-				return fmt.Errorf("failed to load config: %w", err)
-			}
-
-			if token == "" {
-				token = os.Getenv("DISCORDO_TOKEN")
-			}
+func Run() error {
+	flag.StringVar(&token, "token", "", "authentication token (default: $DISCORDO_TOKEN or keyring)")
+	flag.StringVar(&configPath, "config-path", config.DefaultPath(), "path of the configuration file")
+	flag.StringVar(&logPath, "log-path", logger.DefaultPath(), "path of the log file")
+	flag.StringVar(&logLevel, "log-level", "info", "log level")
+	flag.Parse()
 
-			if token == "" {
-				token, err = keyring.GetToken()
-				if err != nil {
-					slog.Info("failed to retrieve token from keyring", "err", err)
-				}
-			}
+	var level slog.Level
+	switch logLevel {
+	case "debug":
+		ws.EnableRawEvents = true
+		level = slog.LevelDebug
+	case "info":
+		level = slog.LevelInfo
+	case "warn":
+		level = slog.LevelWarn
+	case "error":
+		level = slog.LevelError
+	}
 
-			return app.New(cfg).Run(token)
-		},
+	if err := logger.Load(logPath, level); err != nil {
+		return fmt.Errorf("failed to load logger: %w", err)
 	}
 
-	Execute = rootCmd.Execute
-)
+	cfg, err := config.Load(configPath)
+	if err != nil {
+		return fmt.Errorf("failed to load config: %w", err)
+	}
 
-func init() {
-	flags := rootCmd.Flags()
-	flags.StringVar(&token, "token", "", "authentication token (default: $DISCORDO_TOKEN or keyring)")
+	if token == "" {
+		token = os.Getenv("DISCORDO_TOKEN")
+	}
 
-	flags.StringVar(&configPath, "config-path", config.DefaultPath(), "path of the configuration file")
+	if token == "" {
+		token, err = keyring.GetToken()
+		if err != nil {
+			slog.Info("failed to retrieve token from keyring", "err", err)
+		}
+	}
 
-	flags.StringVar(&logPath, "log-path", logger.DefaultPath(), "path of the log file")
-	flags.StringVar(&logLevel, "log-level", "info", "log level")
+	return app.New(cfg).Run(token)
 }

go.mod

@@ -20,7 +20,6 @@ require (
 	github.com/sahilm/fuzzy v0.1.1
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966
-	github.com/spf13/cobra v1.10.2
 	github.com/yuin/goldmark v1.7.13
 	github.com/zalando/go-keyring v0.2.6
 	golang.design/x/clipboard v0.7.1
@@ -37,7 +36,6 @@ require (
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/godbus/dbus/v5 v5.2.2 // indirect
 	github.com/gorilla/schema v1.4.1 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jackmordaunt/icns/v3 v3.0.1 // indirect
 	github.com/josephspurrier/goversioninfo v1.5.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
@@ -47,7 +45,6 @@ require (
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/sergeymakinen/go-bmp v1.0.0 // indirect
 	github.com/sergeymakinen/go-ico v1.0.0 // indirect
-	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/tadvi/systray v0.0.0-20190226123456-11a2b8fa57af // indirect
 	github.com/twmb/murmur3 v1.1.8 // indirect
 	go4.org v0.0.0-20230225012048-214862532bf5 // indirect

go.sum

@@ -34,7 +34,6 @@ github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWR
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
 github.com/danieljoos/wincred v1.2.3 h1:v7dZC2x32Ut3nEfRH+vhoZGvN72+dQ/snVXo/vMFLdQ=
 github.com/danieljoos/wincred v1.2.3/go.mod h1:6qqX0WNrS4RzPZ1tnroDzq9kY3fu1KwE7MRLQK4X0bs=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -101,8 +100,6 @@ github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
-github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
-github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jackmordaunt/icns/v3 v3.0.1 h1:xxot6aNuGrU+lNgxz5I5H0qSeCjNKp8uTXB1j8D4S3o=
 github.com/jackmordaunt/icns/v3 v3.0.1/go.mod h1:5sHL59nqTd2ynTnowxB/MDQFhKNqkK8X687uKNygaSQ=
 github.com/josephspurrier/goversioninfo v1.5.0 h1:9TJtORoyf4YMoWSOo/cXFN9A/lB3PniJ91OxIH6e7Zg=
@@ -133,7 +130,6 @@ github.com/randall77/makefat v0.0.0-20210315173500-7ddd0e42c844/go.mod h1:T1TLSf
 github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd/go.mod h1:hPqNNc0+uJM6H+SuU8sEs5K5IQeKccPqeSjfgcKGgPk=
 github.com/sahilm/fuzzy v0.1.1 h1:ceu5RHF8DGgoi+/dR5PsECjCDH1BE3Fnmpo7aVXOdRA=
 github.com/sahilm/fuzzy v0.1.1/go.mod h1:VFvziUEIMCrT6A6tw2RFIXPXXmzXbOsSHF0DOI8ZK9Y=
@@ -145,11 +141,6 @@ github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1
 github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e/go.mod h1:XV66xRDqSt+GTGFMVlhk3ULuV0y9ZmzeVGR4mloJI3M=
 github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 h1:JIAuq3EEf9cgbU6AtGPK4CTG3Zf6CKMNqf0MHTggAUA=
 github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966/go.mod h1:sUM3LWHvSMaG192sy56D9F7CNvL7jUJVXoqM1QKLnog=
-github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
-github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
-github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
-github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@@ -178,7 +169,6 @@ go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
-go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
 go4.org v0.0.0-20230225012048-214862532bf5 h1:nifaUDeh+rPaBCMPMQHZmvJf+QdpLFnuQPwx+LxVmtc=
 go4.org v0.0.0-20230225012048-214862532bf5/go.mod h1:F57wTi5Lrj6WLyswp5EYV1ncrEbFGHD4hhz6S1ZYeaU=
 golang.design/x/clipboard v0.7.1 h1:OEG3CmcYRBNnRwpDp7+uWLiZi3hrMRJpE9JkkkYtz2c=

main.go

@@ -7,7 +7,7 @@ import (
 )
 
 func main() {
-	if err := cmd.Execute(); err != nil {
-		slog.Error("failed to execute command", "err", err)
+	if err := cmd.Run(); err != nil {
+		slog.Error("failed to run command", "err", err)
 	}
 }