import * as NodeCrypto from "node:crypto";import * as Effect from "effect/Effect";import * as Option from "effect/Option";import * as Schema from "effect/Schema"; import * as ServerSecretStore from "../auth/ServerSecretStore.ts"; const CLOUD_LINK_KEY_PAIR = "cloud-link-ed25519-key-pair";const CLOUD_LINK_PRIVATE_KEY = "cloud-link-ed25519-private-key";const CLOUD_LINK_PUBLIC_KEY = "cloud-link-ed25519-public-key"; const EnvironmentKeyPair = Schema.Struct({  privateKey: Schema.String,  publicKey: Schema.String,});type EnvironmentKeyPair = typeof EnvironmentKeyPair.Type; const EnvironmentKeyPairJson = Schema.fromJsonString(EnvironmentKeyPair);const decodeEnvironmentKeyPair = Schema.decodeUnknownEffect(EnvironmentKeyPairJson);const encodeEnvironmentKeyPair = Schema.encodeEffect(EnvironmentKeyPairJson); function bytesToString(bytes: Uint8Array): string {  return new TextDecoder().decode(bytes);} function stringToBytes(value: string): Uint8Array {  return new TextEncoder().encode(value);} const keyPairPersistenceError = (message: string, cause?: unknown) =>  new ServerSecretStore.SecretStoreError({ message, cause }); const readEnvironmentKeyPair = Effect.fn("readEnvironmentKeyPair")(function* (  secrets: ServerSecretStore.ServerSecretStoreShape,) {  const encoded = yield* secrets.get(CLOUD_LINK_KEY_PAIR);  if (Option.isNone(encoded)) {    return Option.none<EnvironmentKeyPair>();  }  const decoded = yield* decodeEnvironmentKeyPair(bytesToString(encoded.value)).pipe(    Effect.mapError((cause) =>      keyPairPersistenceError("Failed to decode environment signing key pair.", cause),    ),  );  return Option.some(decoded);}); const persistEnvironmentKeyPair = Effect.fn("persistEnvironmentKeyPair")(function* (  secrets: ServerSecretStore.ServerSecretStoreShape,  keyPair: EnvironmentKeyPair,) {  const encoded = yield* encodeEnvironmentKeyPair(keyPair).pipe(    Effect.mapError((cause) =>      keyPairPersistenceError("Failed to encode environment signing key pair.", cause),    ),  );  return yield* secrets.create(CLOUD_LINK_KEY_PAIR, stringToBytes(encoded)).pipe(    Effect.as(keyPair),    Effect.catchTag("SecretStoreError", (error) =>      ServerSecretStore.isSecretAlreadyExistsError(error)        ? readEnvironmentKeyPair(secrets).pipe(            Effect.flatMap(              Option.match({                onSome: Effect.succeed,                onNone: () =>                  Effect.fail(                    keyPairPersistenceError(                      "Failed to read environment signing key pair after concurrent creation.",                    ),                  ),              }),            ),          )        : Effect.fail(error),    ),  );}); export const getOrCreateEnvironmentKeyPairFromSecretStore = Effect.fn(function* (  secrets: ServerSecretStore.ServerSecretStoreShape,) {  const existing = yield* readEnvironmentKeyPair(secrets);  if (Option.isSome(existing)) {    return existing.value;  }   const existingPrivate = yield* secrets.get(CLOUD_LINK_PRIVATE_KEY);  const existingPublic = yield* secrets.get(CLOUD_LINK_PUBLIC_KEY);  if (Option.isSome(existingPrivate) && Option.isSome(existingPublic)) {    return yield* persistEnvironmentKeyPair(secrets, {      privateKey: bytesToString(existingPrivate.value),      publicKey: bytesToString(existingPublic.value),    });  }   const keyPair = NodeCrypto.generateKeyPairSync("ed25519", {    privateKeyEncoding: { format: "pem", type: "pkcs8" },    publicKeyEncoding: { format: "pem", type: "spki" },  });  return yield* persistEnvironmentKeyPair(secrets, {    privateKey: keyPair.privateKey,    publicKey: keyPair.publicKey,  });});