move script loading to root

cmd/root.go

@@ -17,6 +17,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package cmd
 
 import (
+	"encoding/json"
+	"io"
 	"log"
 	"os"
 
@@ -27,6 +29,31 @@ import (
 var preset string
 var scriptPath string
 
+type script struct {
+	Presets []string
+	Times   []float64
+}
+
+func (s *script) load(path string) error {
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	data, err := io.ReadAll(f)
+	if err != nil {
+		return err
+	}
+
+	err = json.Unmarshal(data, s)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func handleWindowEvent(event *sdl.WindowEvent, m *milkDropWindow) {
 	switch event.Event {
 	case sdl.WINDOWEVENT_RESIZED:
@@ -67,22 +94,30 @@ func milkbucket(cmd *cobra.Command, args []string) {
 		log.Fatal("nothing to read from stdin")
 	}
 
+	var presets []string
+
+	if preset != "" {
+		presets = []string{preset}
+	}
+
+	if scriptPath != "" {
+		var s script
+		s.load(scriptPath)
+		presets = s.Presets
+	}
+
 	err = sdl.Init(sdl.INIT_VIDEO)
 	if err != nil {
 		panic(err)
 	}
 	defer sdl.Quit()
 
-	m, err := newMilkDropWindow(800, 600, scriptPath)
+	m, err := newMilkDropWindow(800, 600, presets)
 	if err != nil {
 		panic(err)
 	}
 	defer m.destroy()
 
-	if preset != "" {
-		m.setupPresets([]string{preset})
-	}
-
 	m.loadPreset(false)
 
 	running := true

cmd/window.go

@@ -26,7 +26,6 @@ import "C"
 import (
 	"container/ring"
 	"encoding/binary"
-	"encoding/json"
 	"errors"
 	"io"
 	"os"
@@ -44,34 +43,6 @@ type milkDropWindow struct {
 	preset  *ring.Ring
 }
 
-type script struct {
-	Presets []string
-	Times   []float64
-}
-
-func (m *milkDropWindow) loadScript(scriptPath string) error {
-	f, err := os.Open(scriptPath)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	data, err := io.ReadAll(f)
-	if err != nil {
-		return err
-	}
-
-	var s script
-	err = json.Unmarshal(data, &s)
-	if err != nil {
-		return err
-	}
-
-	m.setupPresets(s.Presets)
-
-	return nil
-}
-
 func (m *milkDropWindow) setupPresets(presets []string) {
 	m.preset = ring.New(len(presets))
 	for _, preset := range presets {
@@ -90,16 +61,11 @@ func (m *milkDropWindow) prevPreset() {
 	m.loadPreset(true)
 }
 
-func newMilkDropWindow(width, height int32, scriptPath string) (*milkDropWindow, error) {
+func newMilkDropWindow(width, height int32, presets []string) (*milkDropWindow, error) {
 	var m milkDropWindow
 	var err error
 
-	if scriptPath != "" {
-		err = m.loadScript(scriptPath)
-		if err != nil {
-			return nil, err
-		}
-	}
+	m.setupPresets(presets)
 
 	m.window, err = sdl.CreateWindow("milkbucket", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, width, height, sdl.WINDOW_OPENGL|sdl.WINDOW_RESIZABLE)
 	if err != nil {