client io architecture

pkg/model/client/client.go

@@ -0,0 +1,47 @@
+package client
+
+import (
+	"galaxy/model/order"
+	"galaxy/model/report"
+)
+
+type Client interface {
+	// Run initializes necessary UI layout an settings, and activates client's main window.
+	// This is a blocking operation until client's main window is closed.
+	Run() error
+
+	// Shutdown closes client's main window and performing all necessary data persistence.
+	Shutdown()
+
+	// OnConnection receives an event when connection with client's server may be established (true) or connectivity lost (false).
+	OnConnection(bool)
+}
+
+type GameID string
+
+func (i GameID) String() string {
+	return string(i)
+}
+
+type State struct {
+	// TODO: store user login key
+	GameState    []GameState `json:"gameState"`
+	ActiveGameID GameID      `json:"activeGameId"`
+}
+
+type GameState struct {
+	ID         GameID `json:"id"`
+	LastTurn   uint   `json:"lastTurn"`
+	ActiveTurn uint   `json:"activeTurn"`
+}
+
+type GameData struct {
+	Turn   uint          `json:"turn"`
+	Report report.Report `json:"report"`
+	Order  *order.Order  `json:"order,omitempty"`
+}
+
+type Settings struct {
+	// TODO: use fyne.Storage for initializing and storing data
+	StoragePath string
+}

pkg/model/order/order.go

@@ -5,7 +5,9 @@ import (
 )
 
 type Order struct {
-	Commands []DecodableCommand `json:"cmd"`
+	// TODO: check with already stored order, if any, and generate an error, if newer order exists
+	UpdatedAt int                `json:"updatedAt"`
+	Commands  []DecodableCommand `json:"cmd"`
 }
 
 func (o Order) MarshalBinary() (data []byte, err error) {

pkg/model/report/report.go

@@ -14,6 +14,10 @@ func F(v float64) Float {
 	return Float(u.Fixed3(v))
 }
 
+func (f Float) F() float64 {
+	return float64(f)
+}
+
 type Report struct {
 	Version            uint                 `json:"version"`
 	Turn               uint                 `json:"turn"`