feat: 添加21点游戏

handler/blackjack/core/game.go

@@ -0,0 +1,74 @@
+package core
+
+import (
+	"errors"
+	"strings"
+
+	"git.lxtend.com/qqbot/handler/blackjack/controller"
+	"git.lxtend.com/qqbot/handler/blackjack/view"
+)
+
+type BackJackGame struct {
+	simulator *controller.BackJackSimulator
+	viewer    *view.LiteralViewer
+}
+
+func NewBlackJackGame(simulator *controller.BackJackSimulator, viewer *view.LiteralViewer) *BackJackGame {
+	return &BackJackGame{
+		simulator: simulator,
+		viewer:    viewer,
+	}
+}
+
+func (game *BackJackGame) AddCommand(command string) (string, error) {
+	command = strings.Split(command, " ")[0]
+	response := ""
+	err := error(nil)
+
+	switch command {
+	case "start":
+		{
+			game.simulator.Init()
+			response += game.viewer.GetResponse()
+			response += "[🐧] You have started a new Blackjack game.\n"
+			response += "[🐧] Type hit to hit.\n"
+			response += "[🐧] Type stand to stand.\n"
+			response += "[🐧] Type start to restart a new game.\n"
+			response += "[🐧] Type exit to leave the game.\n"
+		}
+
+	case "hit":
+		{
+			result := game.simulator.Hit()
+			response += game.viewer.GetResponse()
+			response += result.Description
+			if result.Code != 200 {
+				err = errors.New("game over")
+			}
+		}
+
+	case "stand":
+		{
+			result := game.simulator.Stand()
+			response += game.viewer.GetResponse()
+			response += "[🐧] You decide to stand !\n"
+			response += result.Description
+			if result.Code != 200 {
+				err = errors.New("game over")
+			}
+		}
+
+	default:
+		{
+			response += "[🐧] Invalid command !\n"
+			err = errors.New("invalid command")
+		}
+	}
+
+	return response, err
+}
+
+func (game *BackJackGame) Close() {
+	game.viewer = nil
+	game.simulator = nil
+}