From 62776f06334347cbf365be22163788696297f4ef Mon Sep 17 00:00:00 2001
From: Marco Kittel <marco@kittel.dev>
Date: Mon, 23 Jun 2025 00:39:39 +0200
Subject: [PATCH] Einbau von Goroutine, Waitgroups und Context

---
 cmd/shell/main.go   | 43 ++++++++++++++++++++++++++++++++-----------
 internal/app/app.go | 30 +++++++++---------------------
 2 files changed, 41 insertions(+), 32 deletions(-)

diff --git a/cmd/shell/main.go b/cmd/shell/main.go
index 33437be..2607ecc 100644
--- a/cmd/shell/main.go
+++ b/cmd/shell/main.go
@@ -1,7 +1,12 @@
 package main
 
 import (
-	"fmt"
+	"context"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+	"time"
 
 	"gittea.marcokittel.de/elio/eliotools/datawriter/internal/app"
 	"gittea.marcokittel.de/elio/eliotools/datawriter/internal/dbwriter"
@@ -14,19 +19,35 @@ const (
 	StockMustHaveFileLen = 38
 )
 
-type dbfunction func(data dbwriter.DBWriter)
-
-var filename = "2023-11-09T15:02:17+00:00-CH-stock.csv"
-
-func GetDbBehavior() dbfunction {
-	return func(data dbwriter.DBWriter) {
-		fmt.Println("Db Behavior")
+func db(ctx context.Context, app *app.App, wg *sync.WaitGroup) {
+	defer wg.Done()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+			//Hier nach neuen Dateien suchen
+			err := app.AppendData(dbwriter.MyStruct{A: "bla", B: 4})
+			if err != nil {
+				//todo
+			}
+			time.Sleep(time.Second * 2)
+		}
 	}
 }
 
 func main() {
-	// Auf mdcat warten
-	app := app.NewApp(NewDir, ProcessedDir, Rights)
-	app.Run()
 
+	ctx, cancel := signal.NotifyContext(
+		context.Background(),
+		os.Interrupt,
+		syscall.SIGTERM,
+	)
+	defer cancel()
+	var wg sync.WaitGroup
+	app := app.NewApp(NewDir, ProcessedDir, Rights, &wg)
+	wg.Add(1)
+	go db(ctx, app, &wg)
+	app.Run()
+	wg.Wait()
 }
diff --git a/internal/app/app.go b/internal/app/app.go
index 4bbe679..b02547a 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -5,7 +5,6 @@ import (
 	"os"
 	"runtime"
 	"sync"
-	"time"
 
 	"gittea.marcokittel.de/elio/eliotools/datawriter/internal/dbwriter"
 	"gittea.marcokittel.de/elio/eliotools/logger"
@@ -13,26 +12,31 @@ import (
 )
 
 type App struct {
-	wg                  sync.WaitGroup
+	wg                  *sync.WaitGroup
 	mu                  sync.Mutex
 	log                 logger.Logger
 	newFolderPath       string
 	processedFolderPath string
 	lookupPath          string
 	dirCreationRights   int
-	job                 func(dbwriter.DBWriter)
-	dbw                 dbwriter.DBWriter
 }
 
-func NewApp(newFolderPath string, processedFolderPath string, dirCreationRights int) *App {
+func NewApp(newFolderPath string, processedFolderPath string, dirCreationRights int, wg *sync.WaitGroup) *App {
 	a := App{log: logger.NewMarcoLogger(),
 		newFolderPath:       newFolderPath,
 		processedFolderPath: processedFolderPath,
 		dirCreationRights:   dirCreationRights,
+		wg:                  wg,
 	}
 	return &a
 }
 
+func (a *App) AppendData(data dbwriter.MyStruct) error {
+	a.log.Info("Verarbeite Daten: " + data.A + " " + string(data.B))
+	//Todo
+	return nil
+}
+
 func (a *App) Foo() {
 
 	// x := tools.IsFilenameValid(filename)
@@ -77,21 +81,5 @@ func (a *App) Run() {
 	}
 
 	a.log.Info("Applikation gestartet")
-	for {
-		time.Sleep(time.Second * 10)
-		a.log.Info("Oh yeah baby, wir nehmen fahrt auf...")
-	}
-	// Todo:
-	// for i := 0; i < 4; i++ {
-	// 	a.wg.Add(1)
-	// 	go func() {
-	// 		defer a.wg.Done()
-
-	// 		ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(time.Duration(1*time.Millisecond)))
-	// 		defer cancel()
-
-	// 	}()
-	// }
-	// a.wg.Wait()
 
 }