feat: edit config

lunar is angry at me for not having this feature

cmd/vinegar/vinegar.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/vinegarhq/vinegar/internal/config"
+	"github.com/vinegarhq/vinegar/internal/config/editor"
 	"github.com/vinegarhq/vinegar/internal/config/state"
 	"github.com/vinegarhq/vinegar/internal/dirs"
 	"github.com/vinegarhq/vinegar/internal/logs"
@@ -22,7 +23,7 @@ var Version string
 
 func usage() {
 	fmt.Fprintln(os.Stderr, "usage: vinegar player|studio|exec [args...]")
-	fmt.Fprintln(os.Stderr, "       vinegar kill|uninstall|delete|version")
+	fmt.Fprintln(os.Stderr, "       vinegar edit|kill|uninstall|delete|version")
 
 	os.Exit(1)
 }
@@ -61,6 +62,8 @@ func main() {
 		Binary(roblox.Player, &cfg, &pfx, os.Args[2:]...)
 	case "studio":
 		Binary(roblox.Studio, &cfg, &pfx, os.Args[2:]...)
+	case "edit":
+		editor.EditConfig()
 	case "exec":
 		if err := pfx.ExecWine(os.Args[2:]...); err != nil {
 			log.Fatal(err)

internal/config/editor/editor.go

@@ -0,0 +1,77 @@
+package editor
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+
+	"github.com/BurntSushi/toml"
+	"github.com/vinegarhq/vinegar/internal/config"
+	"github.com/vinegarhq/vinegar/internal/dirs"
+)
+
+func EditConfig() {
+	var cfg config.Config
+
+	if err := dirs.Mkdirs(dirs.Config); err != nil {
+		log.Fatal(err)
+	}
+
+	file, err := os.OpenFile(config.Path, os.O_WRONLY|os.O_CREATE, 0o644)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	info, err := file.Stat()
+	if err != nil {
+		file.Close()
+		log.Fatal(err)
+	}
+
+	template := "# See how to configure Vinegar on the documentation website:\n" +
+		"# https://vinegarhq.github.io/Configuration\n\n"
+
+	if info.Size() < 1 {
+		log.Println("Writing Configuration template")
+
+		if _, err := file.WriteString(template); err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	file.Close()
+
+	for {
+		if err := Editor(config.Path); err != nil {
+			log.Fatal(err)
+		}
+
+		if _, err := toml.DecodeFile(config.Path, &cfg); err != nil {
+			log.Println(err)
+			log.Println("Press enter to re-edit configuration file")
+			fmt.Scanln()
+
+			continue
+		}
+
+		break
+	}
+}
+
+func Editor(path string) error {
+	editor, ok := os.LookupEnv("EDITOR")
+
+	if !ok {
+		return errors.New("no $EDITOR variable set")
+	}
+
+	cmd := exec.Command(editor, path)
+
+	cmd.Stdin = os.Stdin
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+
+	return cmd.Run()
+}