fix: only tint the output if running in a terminal

This should keep logfiles, Jenkins output, etc., readable

style: drop the log message for a cache hit from WARN to INFO.

Fixes: Issue #75

cmd/root.go

@@ -29,6 +29,7 @@ import (
  "github.com/lmittmann/tint"
  "github.com/spf13/cobra"
  "github.com/spf13/viper"
+ "golang.org/x/term"
 
  "github.com/retr0h/go-gilt/pkg"
  "github.com/retr0h/go-gilt/pkg/config"
@@ -92,6 +93,7 @@ func initLogger() {
  tint.NewHandler(os.Stderr, &tint.Options{
  Level: logLevel,
  TimeFormat: time.Kitchen,
+ NoColor: !term.IsTerminal(int(os.Stdout.Fd())),
  }),
  )
 }

go.mod

@@ -12,6 +12,7 @@ require (
  github.com/spf13/viper v1.18.2
  github.com/stretchr/testify v1.8.4
  go.hein.dev/go-version v0.1.0
+ golang.org/x/term v0.15.0
 )
 
 require (

go.sum

@@ -215,6 +215,8 @@ golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
 golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
+golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=

internal/repository/repository.go

@@ -96,7 +96,7 @@ func (r *Repository) Clone(
  return targetDir, err
  }
  } else {
- r.logger.Warn("clone already exists", slog.String("dstDir", targetDir))
+ r.logger.Info("clone already exists", slog.String("dstDir", targetDir))
  }
 
  return targetDir, nil