first alpha version cli

cmd/cli/commands/remove/remove.go

@@ -0,0 +1,40 @@
+package remove
+
+import (
+	"cloudsave/pkg/game"
+	"context"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/google/subcommands"
+)
+
+type (
+	RemoveCmd struct{}
+)
+
+func (*RemoveCmd) Name() string     { return "remove" }
+func (*RemoveCmd) Synopsis() string { return "unregister a game" }
+func (*RemoveCmd) Usage() string {
+	return `remove:
+  Unregister a game
+`
+}
+
+func (p *RemoveCmd) SetFlags(f *flag.FlagSet) {
+}
+
+func (p *RemoveCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	if f.NArg() != 1 {
+		fmt.Fprintln(os.Stderr, "error: the command is expecting for 1 argument")
+		return subcommands.ExitUsageError
+	}
+
+	err := game.Remove(f.Arg(0))
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to unregister the game:", err)
+		return subcommands.ExitFailure
+	}
+	return subcommands.ExitSuccess
+}