interactions yay!!

interactions/interactions.go

@@ -0,0 +1,74 @@
+package interactions
+
+import (
+	"crypto/ed25519"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/gofiber/fiber/v3"
+
+	"git.sapphic.engineer/roleypoly/v4/discord"
+	"git.sapphic.engineer/roleypoly/v4/types"
+)
+
+type Interactions struct {
+	PublicKey ed25519.PublicKey
+	Guilds    discord.IGuildService
+	Router    *InteractionRouter
+
+	// if interactions are able to be used
+	OK bool
+}
+
+func NewInteractions(publicKey string, guildsService discord.IGuildService) *Interactions {
+	if publicKey == "" {
+		publicKey = os.Getenv("DISCORD_PUBLIC_KEY")
+	}
+
+	return &Interactions{
+		PublicKey: ed25519.PublicKey(publicKey),
+		Guilds:    guildsService,
+		Router:    NewInteractionRouter(),
+		OK:        len(publicKey) != 0,
+	}
+}
+
+func (i *Interactions) Routes(r fiber.Router) {
+	r.Post("/", i.PostHandler)
+
+	i.Router.Add("hello-world", i.CmdHelloWorld)
+}
+
+func (i *Interactions) PostHandler(c fiber.Ctx) error {
+	if !i.OK {
+		return types.NewAPIError(http.StatusUnauthorized, "interactions not enabled").Send(c)
+	}
+
+	signature := c.Get("X-Signature-Ed25519")
+	timestamp := c.Get("X-Signature-Timestamp")
+	err := i.Verify(signature, timestamp, c.BodyRaw())
+	if err != nil {
+		log.Println("interactions: verification failed, ", err)
+		return types.NewAPIError(http.StatusUnauthorized, "verification failed").Send(c)
+	}
+
+	ix := Interaction{}
+	err = c.Bind().JSON(&ix)
+	if err != nil {
+		log.Println("interactions: json body parse failed, ", err)
+		return types.NewAPIError(http.StatusBadRequest, "bad request").Send(c)
+	}
+
+	if ix.Type == TypePing {
+		return c.JSON(InteractionResponse{
+			Type: ResponsePong,
+		})
+	}
+
+	if ix.Type == TypeApplicationCommand {
+		return i.Router.Handle(c, ix)
+	}
+
+	return types.NewAPIError(http.StatusNotImplemented, "not implemented").Send(c)
+}