oh shit

config.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+)
+
+type Config struct {
+	ImageFilters
+	Root string
+}
+
+func (config *Config) load() {
+	configRaw, err := os.ReadFile("./config.json")
+	if err != nil {
+		log.Fatal("Couldn't open config file!", err)
+	}
+
+	err = json.Unmarshal(configRaw, &config)
+	if err != nil {
+		log.Fatal("Couldn't unmarshal config!", err)
+	}
+}

files.go

@@ -1,16 +1,35 @@
 package main
 
 import (
+	// "fmt"
 	"math/rand"
 	"os"
+	"regexp"
 )
 
-func getRandomFile(dir string) (string, error) {
+func getRandomFile(dir string) (path string, filename string, error error) {
 	files, err := os.ReadDir(dir)
 	if err != nil {
-		return "", err
+		return "", "", err
 	}
-	randomIndex := rand.Intn(len(files))
-	randomImg := files[randomIndex]
-	return dir + "/" + randomImg.Name(), nil
+
+	// for _, file := range files { fmt.Println(file.Name(), file.IsDir())
+	// }
+
+	var randomIndex int
+	var randomImg os.DirEntry
+	for {
+		randomIndex = rand.Intn(len(files))
+		randomImg = files[randomIndex]
+		//re-roll if you get a directory
+		if files[randomIndex].IsDir() == false {
+			break
+		}
+		//re-roll if not a recognised image type
+		isImage, _ := regexp.Match(".jpg$|.jpeg$|.png$|.bmp$|.webp$", []byte(randomImg.Name()))
+		if isImage {
+			break
+		}
+	}
+	return dir + "/" + randomImg.Name(), randomImg.Name(), nil
 }

hyprpaper.go

@@ -6,26 +6,30 @@ import (
 )
 
 func hyprpaperPreload(path string) error {
-	var err error
-	var out []byte
-	out, err = exec.Command("hyprctl", "hyprpaper", "preload", path).Output()
+	out, err := exec.Command("hyprctl", "hyprpaper", "preload", path).Output()
 	if err != nil {
 		return err
 	}
-	str := string(out)
-	if str != "ok\n" {
-		return errors.New(str)
-	}
-	return nil
+	return checkHyprctlError(out)
 }
 
 func hyprpaperWallpaper(path string) error {
-	var err error
-	var out []byte
-	out, err = exec.Command("hyprctl", "hyprpaper", "wallpaper", ","+path).Output()
+	out, err := exec.Command("hyprctl", "hyprpaper", "wallpaper", ","+path).Output()
 	if err != nil {
 		return err
 	}
+	return checkHyprctlError(out)
+}
+
+func hyprpaperUnloadAll() error {
+	out, err := exec.Command("hyprctl", "hyprpaper", "unload", "all").Output()
+	if err != nil {
+		return err
+	}
+	return checkHyprctlError(out)
+}
+
+func checkHyprctlError(out []byte) error {
 	str := string(out)
 	if str != "ok\n" {
 		return errors.New(str)

image.go

@@ -10,15 +10,15 @@ import (
 	"image/png"
 )
 
-type Config struct {
+type ImageFilters struct {
 	Colorize [3]float32
 	Contrast int
 	Gamma    float64
-	Root     string
 }
 
 func loadImage(filename string) image.Image {
 	f, err := os.Open(filename)
+	log.Println("filename: ", filename)
 	if err != nil {
 		log.Fatalf("os.Open failed: %v", err)
 	}

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
 	"log"
 	"os"
@@ -10,7 +9,9 @@ import (
 func main() {
 	var err error
 
-	config := loadConfig()
+	var config Config
+	config.load()
+	fmt.Printf("%+v\n", config)
 
 	//get working directory
 	wd, err := os.Getwd()
@@ -18,45 +19,35 @@ func main() {
 		log.Fatal("couldn't find working directory", err)
 	}
 
-	curr := wd + "/curr.png"
-	// apply curr.png if already preloaded
-	err = hyprpaperWallpaper(curr)
-	if err != nil {
-		//preload curr.png if not
-		err = hyprpaperPreload(curr)
-		if err != nil {
-			fmt.Println("could not preload (this is fine)", err)
-		}
-	}
+	// // apply curr.png if already preloaded
+	// err = hyprpaperWallpaper(curr)
+	// if err != nil {
+	// 	//preload curr.png if not
+	// 	err = hyprpaperPreload(curr)
+	// 	if err != nil {
+	// 		fmt.Println("could not preload (this is fine)", err)
+	// 	}
+	// }
 
 	dir := config.Root + "/chsck"
-	randomImg, _ := getRandomFile(dir)
+	randomImg, filename, _ := getRandomFile(dir)
 	img := loadImage(randomImg)
 	dst := processImage(img, config)
+	curr := wd + "/images/" + filename
+	log.Println("curr: ", curr)
+	saveImage(curr, dst)
 
-	saveImage("curr.png", dst)
-
-	path := wd + "/curr.png"
-	err = hyprpaperPreload(path)
+	//BUG: hyprpaper won't preload if it recognises the path. SO we need to use images' original names
+	err = hyprpaperPreload(curr)
 	if err != nil {
 		log.Fatal("preload failed!", err)
 	}
-	err = hyprpaperWallpaper(path)
+	err = hyprpaperWallpaper(curr)
 	if err != nil {
 		log.Fatal("set wallpaper failed!", err)
 	}
-}
-
-func loadConfig() Config {
-	configRaw, err := os.ReadFile("./config.json")
+	err = hyprpaperUnloadAll()
 	if err != nil {
-		log.Fatal("Couldn't open config file!", err)
+		log.Fatal("unload all failed!", err)
 	}
-
-	var config Config
-	err = json.Unmarshal(configRaw, &config)
-	if err != nil {
-		log.Fatal("Couldn't unmarshal config!", err)
-	}
-	return config
 }