getCredentials() und OpenDB() zum öffnen einer sql.DB erstellt

i und j sollten jetzt richtig verwendet werden

db.go

@@ -0,0 +1,52 @@
+package sicherheitsunterweisung
+
+import (
+	"bufio"
+	"database/sql"
+	"fmt"
+	"os"
+	"strings"
+	"syscall"
+
+	"github.com/go-sql-driver/mysql"
+	"golang.org/x/term"
+)
+
+func getCredentials() (string, string, error) {
+	fmt.Printf("DB Benutzer: ")
+	user, err := bufio.NewReader(os.Stdin).ReadString('\n')
+	if err != nil {
+		return "", "", fmt.Errorf("getCredentials: bufio.NewReader(os.Stdin).ReadString('\n'): %v", err)
+	}
+
+	fmt.Printf("DB Passwort: ")
+	bytePass, err := term.ReadPassword(int(syscall.Stdin))
+	if err != nil {
+		return "", "", fmt.Errorf("getCredentials: term.ReadPassword(int(syscall.Stdin)): %v", err)
+	}
+	fmt.Println()
+	pass := string(bytePass)
+
+	return strings.TrimSpace(user), strings.TrimSpace(pass), nil
+}
+
+func OpenDB(dbName string) (*sql.DB, error) {
+	var err error
+
+	cfg := mysql.NewConfig()
+	cfg.DBName = dbName
+	cfg.User, cfg.Passwd, err = getCredentials()
+	if err != nil {
+		return nil, fmt.Errorf("OpenDB: getCredentials(): %v\n", err)
+	}
+
+	db, err := sql.Open("mysql", cfg.FormatDSN())
+	if err != nil {
+		return nil, fmt.Errorf("newDB: sql.Open(\"mysql\", cfg.FormatDSN()): %v\n", err)
+	}
+	if err := db.Ping(); err != nil {
+		return nil, fmt.Errorf("newDB: db.Ping(): %v\n", err)
+	}
+
+	return db, nil
+}

go.mod

@@ -1,3 +1,10 @@
 module streifling.com/jason/sicherheitsunterweisung
 
 go 1.21.1
+
+require (
+	github.com/go-sql-driver/mysql v1.7.1
+	golang.org/x/term v0.13.0
+)
+
+require golang.org/x/sys v0.13.0 // indirect

go.sum

@@ -0,0 +1,6 @@
+github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrtU8EI=
+github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
+golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=

main.go

@@ -1,4 +1,4 @@
-package main
+package sicherheitsunterweisung
 
 import (
 	"fmt"
@@ -33,8 +33,13 @@ func main() {
 	var i, j int64
 	var b Briefing
 
+	i, j = 1, 1
 	mux := http.NewServeMux()
-	i = 1
+
+	db, err := OpenDB("sicherheitsunterweisung")
+	if err != nil {
+		log.Fatalln(err)
+	}
 
 	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static/"))))
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
@@ -51,7 +56,8 @@ func main() {
 		b.Time = r.PostFormValue("time")
 		b.State = r.PostFormValue("state")
 		b.Location = r.PostFormValue("location")
-		for j = 1; j <= i; j++ {
+
+		for ; j <= i; j++ {
 			b.Participants = append(b.Participants, Participant{
 				ID: j,
 				Person: Person{
@@ -61,7 +67,6 @@ func main() {
 				Company: r.PostFormValue(("participant-company-" + fmt.Sprint(j))),
 			})
 		}
-		fmt.Println(b)
 	})
 
 	log.Fatalln(http.ListenAndServe(":8080", mux))