feat: use coral for cli interactions

* Add serve command to start a server
* Graceful shutdown

Signed-off-by: Ayman Bagabas <ayman.bagabas@gmail.com>

cmd/serve.go

@@ -0,0 +1,57 @@
+package cmd
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/maaslalani/gambit/server"
+	"github.com/muesli/coral"
+)
+
+var (
+	host string
+	port int
+	key  string
+
+	ServeCmd = &coral.Command{
+		Use:     "serve",
+		Aliases: []string{"server"},
+		Short:   "Start a Gambit server",
+		Args:    coral.NoArgs,
+		RunE: func(cmd *coral.Command, args []string) error {
+			s, err := server.NewServer(key, host, port)
+			if err != nil {
+				return err
+			}
+
+			done := make(chan os.Signal, 1)
+			signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+			log.Printf("Starting Gambit server on %s:%d", host, port)
+			go func() {
+				if err = s.Start(); err != nil {
+					log.Fatalln(err)
+				}
+			}()
+
+			<-done
+			log.Print("Stopping Gambit server")
+			ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+			defer func() { cancel() }()
+			if err := s.Shutdown(ctx); err != nil {
+				log.Fatalln(err)
+			}
+
+			return nil
+		},
+	}
+)
+
+func init() {
+	ServeCmd.Flags().StringVar(&key, "key", "gambit", "Server private key path")
+	ServeCmd.Flags().StringVar(&host, "host", "localhost", "Server host to bind to")
+	ServeCmd.Flags().IntVar(&port, "port", 53531, "Server port to bind to")
+}

go.mod

@@ -3,21 +3,31 @@ module github.com/maaslalani/gambit
 go 1.17
 
 require (
-	github.com/charmbracelet/bubbletea v0.19.1
+	github.com/charmbracelet/bubbletea v0.19.4-0.20220208181305-42cd4c31919c
 	github.com/charmbracelet/lipgloss v0.4.0
+	github.com/charmbracelet/wish v0.2.1-0.20220208202654-c995f0b51657
 	github.com/dylhunn/dragontoothmg v0.0.0-20170905201839-b0146de1e275
+	github.com/gliderlabs/ssh v0.3.3
+	github.com/muesli/coral v1.0.0
+	github.com/muesli/termenv v0.11.0
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
 )
 
 require (
+	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect
+	github.com/charmbracelet/keygen v0.2.1-0.20220208202440-953ea8f89cfd // indirect
 	github.com/containerd/console v1.0.2 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
-	github.com/mattn/go-isatty v0.0.13 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/mikesmitty/edkey v0.0.0-20170222072505-3356ea4e686a // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
-	github.com/muesli/termenv v0.9.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
-	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
 	golang.org/x/term v0.0.0-20210422114643-f5beecf764ed // indirect
 )

go.sum

@@ -1,35 +1,128 @@
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 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/term v0.0.0-20210422114643-f5beecf764ed/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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main.go

@@ -9,26 +9,52 @@ import (
 	"strings"
 
 	tea "github.com/charmbracelet/bubbletea"
-	dt "github.com/dylhunn/dragontoothmg"
+	"github.com/maaslalani/gambit/cmd"
 	"github.com/maaslalani/gambit/game"
+	"github.com/muesli/coral"
 )
 
-func main() {
+var (
-	startPos, err := readStdin()
+	rootCmd = &coral.Command{
+		Use:                   "gambit",
+		Short:                 "Play chess in your terminal",
+		DisableFlagsInUseLine: true,
+		RunE: func(cmd *coral.Command, args []string) error {
+			if len(args) == 0 {
+				startPos, _ := readStdin()
 
-	if err != nil {
+				debug := os.Getenv("DEBUG")
-		startPos = dt.Startpos
+				if debug != "" {
+					f, err := tea.LogToFile(debug, "")
+					if err != nil {
+						log.Fatal(err)
+					}
+					defer f.Close()
+				}
+
+				p := tea.NewProgram(
+					game.NewGameWithPosition(startPos),
+					tea.WithAltScreen(),
+					tea.WithMouseCellMotion(),
+				)
+
+				return p.Start()
+			}
+
+			return cmd.Help()
+		},
 	}
+)
 
-	p := tea.NewProgram(
+func init() {
-		game.InitialModel(startPos),
+	rootCmd.AddCommand(
-		tea.WithAltScreen(),
+		cmd.ServeCmd,
-		tea.WithMouseCellMotion(),
 	)
+}
 
-	err = p.Start()
+func main() {
-	if err != nil {
+	if err := rootCmd.Execute(); err != nil {
-		log.Fatal(err)
+		os.Exit(1)
 	}
 }