Add hooks functionality

internal/torrent/hooks.go

@@ -0,0 +1,44 @@
+package torrent
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os/exec"
+
+	"github.com/debridmediamanager.com/zurg/internal/config"
+)
+
+type ScriptExecutor struct {
+	Script string
+}
+
+func (se *ScriptExecutor) Execute() (string, error) {
+	if se.Script == "" {
+		return "", nil
+	}
+	cmd := exec.Command("/bin/sh", "-c", se.Script)
+	var out bytes.Buffer
+	var stderr bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = &stderr
+	err := cmd.Run()
+	if err != nil {
+		return "", fmt.Errorf("error executing script: %v; stderr: %s", err, stderr.String())
+	}
+	return out.String(), nil
+}
+
+func OnLibraryUpdateHook(config config.ConfigInterface) {
+	executor := &ScriptExecutor{
+		Script: config.GetOnLibraryUpdate(),
+	}
+	output, err := executor.Execute()
+	if err != nil {
+		log.Printf("Failed to execute hook on_library_update:\n%v\n", err)
+		return
+	}
+	if output != "" {
+		log.Printf("Output of hook on_library_update:\n%s\n", output)
+	}
+}

internal/torrent/manager.go

@@ -202,6 +202,7 @@ func (t *TorrentManager) startRefreshJob() {
 			go t.repairAll(&wg)
 		}
 		go t.mapToDirectories()
+		go OnLibraryUpdateHook(t.config)
 	}
 }