Add go files from previous project

main.go

@@ -2,22 +2,66 @@ package main
 
 import (
 	"embed"
+	"fmt"
+	"io"
+	"log"
+	"os"
 
 	"github.com/wailsapp/wails/v2"
 	"github.com/wailsapp/wails/v2/pkg/options"
 	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
 )
 
+var Error *log.Logger
+var Warning *log.Logger
+
+func init() {
+	log.SetFlags(log.Lmicroseconds | log.Lshortfile)
+	logFile, err := os.Create("main.log")
+	if err != nil {
+		log.Printf("Error creating log file: %v", err)
+		os.Exit(1)
+	}
+	logger := io.MultiWriter(os.Stdout, logFile)
+	log.SetOutput(logger)
+
+	Error = log.New(io.MultiWriter(logFile, os.Stderr, os.Stdout),
+		fmt.Sprintf("%sERROR:%s ", "\033[0;101m", "\033[0m"),
+		log.Lmicroseconds|log.Lshortfile)
+	Warning = log.New(io.MultiWriter(logFile, os.Stdout),
+		fmt.Sprintf("%sWarning:%s ", "\033[0;93m", "\033[0m"),
+		log.Lmicroseconds|log.Lshortfile)
+}
+
 //go:embed all:frontend/dist
 var assets embed.FS
 
+//go:embed ddl.sql
+var ddl string
+var service *BillService
+
 func main() {
+	db := DB{
+		path: "bills.db",
+	}
+	db.Open()
+	defer db.Close()
+	err := db.Init(ddl)
+	if err != nil {
+		Error.Printf("Error initializing database: %v", err)
+		return
+	}
+
+	service = &BillService{
+		db: &db,
+	}
+
 	// Create an instance of the app structure
 	app := NewApp()
 
 	// Create application with options
-	err := wails.Run(&options.App{
-		Title:  "wails-template",
+	err = wails.Run(&options.App{
+		Title:  "bill-manager-w",
 		Width:  1024,
 		Height: 768,
 		AssetServer: &assetserver.Options{