nip19 parsing.

src/main/scala/Components.scala

@@ -0,0 +1,86 @@
+import cats.data.*
+import cats.effect.*
+import cats.effect.syntax.all.*
+import cats.syntax.all.*
+import fs2.concurrent.*
+import fs2.dom.{Event => _, *}
+import io.circe.parser.*
+import io.circe.syntax.*
+import calico.*
+import calico.html.io.{*, given}
+import calico.syntax.*
+import scoin.*
+import snow.*
+
+object Components {
+  def renderEventPointer(
+      evp: snow.EventPointer
+  ): Resource[IO, HtmlDivElement[IO]] =
+    div(
+      cls := "text-md",
+      entry("event id (hex)", evp.id),
+      if evp.relays.size > 0 then
+        Some(entry("relay hints", evp.relays.reduce((a, b) => s"$a, $b")))
+      else None,
+      evp.author.map { pk =>
+        entry("author hint (pubkey hex)", pk.value.toHex)
+      }
+    )
+
+  def renderProfilePointer(
+      pp: snow.ProfilePointer,
+      sk: Option[PrivateKey] = None
+  ): Resource[IO, HtmlDivElement[IO]] =
+    div(
+      cls := "text-md",
+      sk.map { k => entry("private key (hex)", k.value.toHex) },
+      entry("public key (hex)", pp.pubkey.value.toHex),
+      if pp.relays.size > 0 then
+        Some(entry("relay hints", pp.relays.reduce((a, b) => s"$a, $b")))
+      else None
+    )
+
+  def renderAddressPointer(
+      addr: snow.AddressPointer
+  ): Resource[IO, HtmlDivElement[IO]] =
+    div(
+      cls := "text-md",
+      entry("author (pubkey hex)", addr.author.value.toHex),
+      entry("identifier", addr.d),
+      entry("kind", addr.kind.toString),
+      if addr.relays.size > 0 then
+        Some(entry("relay hints", addr.relays.reduce((a, b) => s"$a, $b")))
+      else None
+    )
+
+  def renderEvent(event: Event): Resource[IO, HtmlDivElement[IO]] =
+    div(
+      cls := "text-md",
+      List(("pubkey", event.pubkey), ("id", event.id), ("sig", event.sig))
+        .filter((_, v) => v.isEmpty)
+        .map { (label, _) => entry("property missing", label) },
+      entry("serialized event", event.serialized),
+      entry("implied event id", event.hash.toHex),
+      entry(
+        "does the implied event id match the given event id?",
+        event.id == Some(event.hash.toHex) match {
+          case true => "yes"; case false => "no"
+        }
+      ),
+      entry(
+        "is signature valid?",
+        event.isValid match {
+          case true => "yes"; case false => "no"
+        }
+      )
+    )
+
+  private def entry(
+      key: String,
+      value: String
+  ): Resource[IO, HtmlDivElement[IO]] =
+    div(
+      span(cls := "font-bold", key + " "),
+      span(Styles.mono, value)
+    )
+}

src/main/scala/Main.scala

@@ -13,6 +13,7 @@ import scoin.*
 import snow.*
 
 import Utils.*
+import Components.*
 
 object Store {
   def apply(window: Window[IO]): Resource[IO, Store] = {
@@ -105,6 +106,7 @@ object Main extends IOWebApp {
           (
             cls := "w-full max-h-96 p-3 rounded",
             styleAttr := "min-height: 280px; font-family: monospace",
+            spellCheck := false,
             placeholder := "paste something nostric",
             onInput --> (_.foreach(_ =>
               self.value.get.flatMap(store.input.set)
@@ -121,47 +123,18 @@ object Main extends IOWebApp {
       store.input.map { input =>
         if input.trim() == "" then div("")
         else
-          decode[Event](input) match {
+          Parser.parseInput(input) match {
-            case Left(err: io.circe.ParsingFailure) =>
+            case Left(msg) => div(msg)
-              div("not valid JSON")
+            case Right(event: Event) =>
-            case Left(err: io.circe.DecodingFailure) =>
+              renderEvent(event)
-              err.pathToRootString match {
+            case Right(pp: ProfilePointer) => renderProfilePointer(pp)
-                case None       => div(s"decoding ${err.pathToRootString}")
+            case Right(evp: EventPointer)  => renderEventPointer(evp)
-                case Some(path) => div(s"field $path is missing or wrong")
+            case Right(sk: PrivateKey) =>
-              }
+              renderProfilePointer(
-            case Right(event) =>
+                ProfilePointer(pubkey = sk.publicKey.xonly),
-              div(
+                Some(sk)
-                cls := "text-md",
-                div(
-                  span(cls := "font-bold", "serialized event "),
-                  span(Styles.mono, event.serialized)
-                ),
-                div(
-                  span(cls := "font-bold", "implied event id "),
-                  span(Styles.mono, event.hash.toHex)
-                ),
-                div(
-                  span(
-                    cls := "font-bold",
-                    "does the implied event id match the given event id? "
-                  ),
-                  span(
-                    Styles.mono,
-                    event.id == event.hash.toHex match {
-                      case true => "yes"; case false => "no"
-                    }
-                  )
-                ),
-                div(
-                  span(cls := "font-bold", "is signature valid? "),
-                  span(
-                    Styles.mono,
-                    event.isValid match {
-                      case true => "yes"; case false => "no"
-                    }
-                  )
-                )
               )
+            case Right(addr: AddressPointer) => renderAddressPointer(addr)
           }
 
       }

src/main/scala/Parser.scala

@@ -0,0 +1,33 @@
+import io.circe.parser.*
+import cats.syntax.all.*
+import scoin.*
+import snow.*
+
+import Components.*
+
+object Parser {
+  def parseInput(input: String): Either[
+    String,
+    Event | PrivateKey | AddressPointer | EventPointer | ProfilePointer
+  ] =
+    NIP19.decode(input) match {
+      case Right(pp: ProfilePointer)   => Right(pp)
+      case Right(evp: EventPointer)    => Right(evp)
+      case Right(sk: PrivateKey)       => Right(sk)
+      case Right(addr: AddressPointer) => Right(addr)
+      case Left(_) =>
+        parse(input) match {
+          case Left(err: io.circe.ParsingFailure) =>
+            Left("not valid JSON or NIP-19 code")
+          case Right(json) =>
+            json
+              .as[Event]
+              .leftMap { err =>
+                err.pathToRootString match {
+                  case None       => s"decoding ${err.pathToRootString}"
+                  case Some(path) => s"field $path is missing or wrong"
+                }
+              }
+        }
+    }
+}