feat: expand env in watch-file path

Signed-off-by: Pouyan Heyratpour <[email protected]>

config/viper/config.go

@@ -153,10 +153,10 @@ func (k Kill) decode() config.Kill {
 }
 
 type Command struct {
-	Shell   string   `mapstructure:"shell"`
-	Env     []string `mapstructure:"env"`
-	Exec string   `mapstructure:"exec"`
-	Path   string   `mapstructure:"path"`
+	Shell string   `mapstructure:"shell"`
+	Env   []string `mapstructure:"env"`
+	Exec  string   `mapstructure:"exec"`
+	Path  string   `mapstructure:"path"`
 }
 
 func (c Command) decode() config.Command {
@@ -181,8 +181,9 @@ func testStringZero(v string) bool {
 	return len(strings.TrimSpace(v)) == 0
 }
 
+//nolint:unused
 func testStringSliceZero(v []string) bool {
-	return v == nil || len(v) == 0
+	return len(v) == 0
 }
 
 func testNil[T any](v *T) bool {

polywatch.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"os/exec"
 	"os/signal"
+	"path/filepath"
 	"strings"
 	"sync"
 	"syscall"
@@ -74,11 +75,13 @@ func newPolyWatcher(cfg config.Watcher) (*polyWatcher, error) {
 
 	w := watcher.New()
 	for _, wf := range cfg.Watch.Files {
+		path := filepath.Clean(os.ExpandEnv(wf.Path))
+
 		var err error
 		if wf.Recursive {
-			err = w.AddRecursive(wf.Path)
+			err = w.AddRecursive(path)
 		} else {
-			err = w.Add(wf.Path)
+			err = w.Add(path)
 		}
 
 		if err != nil {