rudimentary slideshow functionality

config.go

@@ -8,7 +8,8 @@ import (
 
 type Config struct {
 	ImageFilters
-	Root string
+	Root     string
+	Duration int
 }
 
 func (config *Config) load() {

config.json

@@ -3,5 +3,6 @@
 "colorize":[ 247,40,60 ],
 "contrast":-35,
 "gamma":0.8,
-"root":"/home/andrzej/bgs"
+"root":"/home/andrzej/bgs",
+"duration":1
 }

main.go

@@ -15,12 +15,15 @@ func main() {
 	config.load()
 	fmt.Printf("%+v\n", config)
 
-	args := []string{""}
-	if len(os.Args) > 0 {
-		args = os.Args[1:]
+	var dir string
+	args := os.Args[1:]
+	if len(args) > 0 {
+		dir = args[0]
+	} else {
+		dir = ""
 	}
 
-	curr, err := pickRandomImage(args[0])
+	curr, err := pickRandomImage(dir)
 	if err != nil {
 		log.Fatal("failed to pick image!", err)
 	}
@@ -29,6 +32,8 @@ func main() {
 
 	var waitGroup sync.WaitGroup
 	waitGroup.Add(1)
-	go server(&waitGroup)
+	go server()
+
+	go slideshow(dir)
 	waitGroup.Wait()
 }

server.go

@@ -6,11 +6,10 @@ import (
 	"os"
 	"os/signal"
 	"strings"
-	"sync"
 	"syscall"
 )
 
-func server(waitGroup *sync.WaitGroup) {
+func server() {
 
 	sockfile := "/tmp/bg-go.sock"
 	//Create a Unix domain socket and listen for incoming connections.

slideshow.go

@@ -1,5 +1,20 @@
 package main
 
-func slideshow(dir string) {
+import (
+	"log"
+	"time"
+)
 
+func slideshow(dir string) {
+	//TODO: use channel to allow changing dir mid flow
+	log.Println("starting slideshow goroutine")
+	for {
+		time.Sleep(time.Duration(config.Duration) * time.Minute)
+		img, err := pickRandomImage(dir)
+		if err != nil {
+			panic(err)
+		}
+		hyprpaperSet(img)
+		log.Println("hyprpaper set!")
+	}
 }