add env parser

cmd/cli/main.go

@@ -4,16 +4,27 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/aykhans/dodo/pkg/config"
+	"github.com/aykhans/dodo/pkg/config/parser"
 	"github.com/aykhans/dodo/pkg/types"
 	"github.com/aykhans/dodo/pkg/utils"
 	"github.com/jedib0t/go-pretty/v6/text"
+	"github.com/k0kubun/pp/v3"
 )
 
 func main() {
-	cliParser := config.NewConfigCLIParser(os.Args)
-	cfg, err := cliParser.Parse()
+	envParser := parser.NewConfigENVParser("DODO")
+	envConfig, err := envParser.Parse()
+	_ = utils.HandleErrorOrDie(err,
+		utils.OnCustomError(func(err types.FieldParseErrors) error {
+			printValidationErrors("ENV", err.Errors...)
+			fmt.Println()
+			os.Exit(1)
+			return nil
+		}),
+	)
 
+	cliParser := parser.NewConfigCLIParser(os.Args)
+	cliConf, err := cliParser.Parse()
 	_ = utils.HandleErrorOrDie(err,
 		utils.OnSentinelError(types.ErrCLINoArgs, func(err error) error {
 			cliParser.PrintHelp()
@@ -35,7 +46,9 @@ func main() {
 		}),
 	)
 
-	fmt.Println(cfg)
+	envConfig.Merge(cliConf)
+	pp.Println(cliConf)   //nolint
+	pp.Println(envConfig) //nolint
 }
 
 func printValidationErrors(parserName string, errors ...types.FieldParseError) {