4 files changed, 72 insertions, 0 deletions
diff --git a/pkg/adapters/json/json.go b/pkg/adapters/json/json.go
new file mode 100644
index 0000000..c9ce212
--- /dev/null
+++ b/pkg/adapters/json/json.go
@@ -0,0 +1,3 @@
+package json
+
+
diff --git a/pkg/db/db.go b/pkg/db/db.go
new file mode 100644
index 0000000..3a49c63
--- /dev/null
+++ b/pkg/db/db.go
@@ -0,0 +1 @@
+package db
diff --git a/pkg/model/model.go b/pkg/model/model.go
new file mode 100644
index 0000000..0a7e026
--- /dev/null
+++ b/pkg/model/model.go
@@ -0,0 +1,7 @@
+package model
+
+
+
+type Adapter interface {
+	Init(string) // inits adapter with filename
+}
+\ No newline at end of file
diff --git a/pkg/model/user.go b/pkg/model/user.go
new file mode 100644
index 0000000..af42e3c
--- /dev/null
+++ b/pkg/model/user.go
@@ -0,0 +1,61 @@
+package model
+
+import "time"
+
+type Sex bool
+
+const (
+	SexMale   Sex = false
+	SexFemale Sex = true
+)
+
+type User struct {
+	ID          uint64 `gorm:"primaryKey"`
+	Name        string
+	Surname     string
+	Fathersname string
+
+	Age uint8
+
+	Sex      Sex
+	Birthday time.Time
+
+	Cards   []Card   `gorm:"foreignKey:UserID"`
+
+	// just for compatibility
+	Flights []Flight `gorm:"many2many:user_flights;joinForeignKey:UserID;joinReferences:FlightID"`
+}
+
+func (User) TableName() string { return "users" }
+
+type Card struct {
+	ID uint64 `gorm:"primaryKey"`
+
+	Prefix string
+	Number uint64
+
+	Bonusprogramm string
+
+	// User has multiple cards -> each card has registered flights to it
+	Flights []Flight `gorm:"many2many:card_flights;joinForeignKey:CardID;joinReferences:FlightID"`
+
+	UserID uint64
+	User   User `gorm:"foreignKey:UserID;constraint:OnUpdate:CASCADE,OnDelete:SET NULL;"`
+}
+
+func (Card) TableName() string { return "cards" }
+
+type Flight struct {
+	ID uint64 `gorm:"primaryKey"`
+
+	Number    string
+	From      string
+	To        string
+	Departure time.Time
+	Arrival   time.Time
+
+	Users []User `gorm:"many2many:user_flights;joinForeignKey:FlightID;joinReferences:UserID"`
+	Cards []Card `gorm:"many2many:card_flights;joinForeignKey:FlightID;joinReferences:CardID"`
+}
+
+func (Flight) TableName() string { return "flights" }