Add basic cli

cmd/cmd_config.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/hiddify/libcore/shared"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+
+	"github.com/spf13/cobra"
+)
+
+var commandBuild = &cobra.Command{
+	Use:   "build",
+	Short: "Build configuration",
+	Args:  cobra.ExactArgs(2),
+	Run: func(cmd *cobra.Command, args []string) {
+		err := build(args[0], args[1])
+		if err != nil {
+			log.Fatal(err)
+		}
+	},
+}
+
+func init() {
+	mainCommand.AddCommand(commandBuild)
+}
+
+func build(path string, optionsPath string) error {
+	if workingDir != "" {
+		path = filepath.Join(workingDir, path)
+		optionsPath = filepath.Join(workingDir, optionsPath)
+	}
+	options, err := readConfigAt(path)
+	if err != nil {
+		return err
+	}
+	configOptions, err := readConfigOptionsAt(optionsPath)
+	if err != nil {
+		return err
+	}
+	config, err := shared.BuildConfigJson(*configOptions, *options)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("%s\n", config)
+	return err
+}
+
+func readConfigAt(path string) (*option.Options, error) {
+	content, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	var options option.Options
+	err = options.UnmarshalJSON(content)
+	if err != nil {
+		return nil, err
+	}
+	return &options, nil
+}
+
+func readConfigOptionsAt(path string) (*shared.ConfigOptions, error) {
+	content, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	var options shared.ConfigOptions
+	err = json.Unmarshal(content, &options)
+	if err != nil {
+		return nil, err
+	}
+	return &options, nil
+}