started working on the backend

backend/pkg/db/users/users.go

@@ -0,0 +1,52 @@
+package users
+
+import (
+	"fmt"
+	"time"
+
+	cache "github.com/jfarleyx/go-simple-cache"
+	"github.com/johannesbuehl/golunteer/backend/pkg/db"
+)
+
+type User struct {
+	Name     string `db:"text"`
+	Password []byte `db:"password"`
+	TokenID  string `db:"tokenID"`
+	Admin    bool   `db:"disabled"`
+}
+
+var c *cache.Cache
+
+func Get() (map[string]User, error) {
+	if users, hit := c.Get("users"); !hit {
+		refresh()
+
+		return nil, fmt.Errorf("users not stored cached")
+	} else {
+		return users.(map[string]User), nil
+	}
+}
+
+func refresh() {
+	// get the usersRaw from the database
+	var usersRaw []User
+
+	if err := db.DB.Select(&usersRaw, "SELECT * FROM USERS"); err == nil {
+		// convert the result in a map
+		users := map[string]User{}
+
+		for _, user := range usersRaw {
+			users[user.Name] = user
+		}
+
+		c.Set("users", users)
+	}
+}
+
+func init() {
+	c = cache.New(24 * time.Hour)
+
+	c.OnExpired(refresh)
+
+	refresh()
+}