make it work on cinnamon

slideshow.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"log"
+	"os"
 	"time"
 
 	"github.com/xyproto/wallutils"
@@ -10,7 +11,7 @@ import (
 
 func slideshow(ch <-chan string) {
 	dir := <-ch
-	ticker := time.NewTicker(time.Duration(config.Duration) * time.Second)
+	ticker := time.NewTicker(time.Duration(config.Duration) * time.Minute)
 
 	go func() {
 		for {
@@ -35,5 +36,20 @@ func setRandomWallpaper(dir string) error {
 	if err != nil {
 		return err
 	}
-	return wallutils.SetWallpaperCustom(img, "fit", false)
+
+	desktopEnv, bool := os.LookupEnv("DESKTOP_SESSION")
+	if !bool {
+		panic("cannot determine desktop environment")
+	}
+	var mode string
+	switch desktopEnv {
+	case "cinnamon":
+		mode = "span"
+	case "hyprland":
+		mode = "fit"
+	default:
+		mode = ""
+	}
+
+	return wallutils.SetWallpaperCustom(img, mode, false)
 }