feat: add log-path flag

cmd/root.go

@@ -40,18 +40,17 @@ var (
 				level = slog.LevelError
 			}
 
-			if err := logger.Load(level); err != nil {
+			logPath, _ := flags.GetString("log-path")
+			if err := logger.Load(logPath, level); err != nil {
 				return fmt.Errorf("failed to load logger: %w", err)
 			}
 
-			configPath, _ := flags.GetString("config")
+			configPath, _ := flags.GetString("config-path")
 			cfg, err := config.Load(configPath)
 			if err != nil {
 				return fmt.Errorf("failed to load config: %w", err)
 			}
 
-			tview.Styles.PrimitiveBackgroundColor = tcell.GetColor(cfg.Theme.BackgroundColor)
-
 			token, _ := flags.GetString("token")
 			if token == "" {
 				token, err = keyring.Get(consts.Name, "token")
@@ -60,6 +59,7 @@ var (
 				}
 			}
 
+			tview.Styles.PrimitiveBackgroundColor = tcell.GetColor(cfg.Theme.BackgroundColor)
 			app = newApplication(cfg)
 			return app.run(token)
 		},
@@ -71,6 +71,7 @@ var (
 func init() {
 	flags := rootCmd.Flags()
 	flags.StringP("token", "t", "", "authentication token")
-	flags.StringP("config", "c", config.DefaultPath(), "path of the configuration file")
+	flags.String("config-path", config.DefaultPath(), "path of the configuration file")
+	flags.String("log-path", logger.DefaultPath(), "path of the log file")
 	flags.String("log-level", "info", "log level")
 }

internal/logger/logger.go

@@ -1,6 +1,7 @@
 package logger
 
 import (
+	"fmt"
 	"log/slog"
 	"os"
 	"path/filepath"
@@ -8,22 +9,29 @@ import (
 	"github.com/ayn2op/discordo/internal/consts"
 )
 
-// Load opens the log file and configures default logger.
-func Load(level slog.Level) error {
+const fileName = "logs.txt"
+
+func DefaultPath() string {
 	path, err := os.UserCacheDir()
 	if err != nil {
+		slog.Info(
+			"user cache directory path cannot be determined; falling back to the current directory path",
+		)
+		path = "."
+	}
+
+	return filepath.Join(path, consts.Name, fileName)
+}
+
+// Load opens the log file and configures default logger.
+func Load(path string, level slog.Level) error {
+	if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil {
 		return err
 	}
 
-	path = filepath.Join(path, consts.Name)
-	if err := os.MkdirAll(path, os.ModePerm); err != nil {
-		return err
-	}
-
-	path = filepath.Join(path, "logs.txt")
 	file, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, os.ModePerm)
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to open log file: %w", err)
 	}
 
 	opts := &slog.HandlerOptions{AddSource: true, Level: level}