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.*

import Utils.*
import Components.*

object Main extends IOWebApp {
  def render: Resource[IO, HtmlDivElement[IO]] = Store(window).flatMap {
    store =>
      div(
        cls := "flex w-full h-full flex-col items-center justify-center",
        div(
          cls := "w-4/5",
          h1(
            cls := "px-1 py-2 text-center text-xl",
            img(
              cls := "inline-block w-8 mr-2",
              src := "/favicon.ico"
            ),
            a(
              href := "https://github.com/fiatjaf/nostr-army-knife",
              "nostr army knife"
            )
          ),
          div(
            cls := "flex my-3",
            input(store),
            actions(store)
          ),
          result(store)
        )
      )
  }

  def actions(store: Store): Resource[IO, HtmlDivElement[IO]] =
    div(
      cls := "flex flex-col space-y-1 my-3",
      store.input.map {
        case "" => div("")
        case _ =>
          button(
            Styles.button,
            "clear",
            onClick --> (_.foreach(_ => store.input.set("")))
          )
      },
      store.result.map {
        case Right(_: Event) =>
          button(
            Styles.button,
            "format",
            onClick --> (_.foreach(_ =>
              store.input.update(original =>
                parse(original).toOption
                  .map(_.printWith(jsonPrinter))
                  .getOrElse(original)
              )
            ))
          )
        case _ => div("")
      },
      button(
        Styles.button,
        "generate event",
        onClick --> (_.foreach(_ =>
          store.input.set(
            Event(
              kind = 1,
              content = "hello world"
            ).sign(keyOne)
              .asJson
              .printWith(jsonPrinter)
          )
        ))
      ),
      button(
        Styles.button,
        "generate keypair",
        onClick --> (_.foreach(_ =>
          store.input.set(
            NIP19.encode(PrivateKey(randomBytes32()))
          )
        ))
      )
    )

  def input(store: Store): Resource[IO, HtmlDivElement[IO]] =
    div(
      cls := "w-full grow",
      div(
        cls := "w-full flex justify-center",
        textArea.withSelf { self =>
          (
            cls := "w-full max-h-96 p-3 rounded",
            styleAttr := "min-height: 280px; font-family: monospace",
            spellCheck := false,
            placeholder := "paste something nostric (event JSON, nprofile, npub, nevent etc or hex key or id)",
            onInput --> (_.foreach(_ =>
              self.value.get.flatMap(store.input.set)
            )),
            value <-- store.input
          )
        }
      )
    )

  def result(store: Store): Resource[IO, HtmlDivElement[IO]] =
    div(
      cls := "w-full flex my-5",
      store.result.map {
        case Left(msg)                  => div(msg)
        case Right(bytes: ByteVector32) => render32Bytes(bytes)
        case Right(event: Event)        => renderEvent(store, event)
        case Right(pp: ProfilePointer)  => renderProfilePointer(store, pp)
        case Right(evp: EventPointer)   => renderEventPointer(store, evp)
        case Right(sk: PrivateKey) =>
          renderProfilePointer(
            store,
            ProfilePointer(pubkey = sk.publicKey.xonly),
            Some(sk)
          )
        case Right(addr: AddressPointer) => renderAddressPointer(store, addr)
      }
    )
}