create daemon

thrower_daemon/node_modules/nostr-tools/lib/esm/nip57.js

@@ -0,0 +1,253 @@
+// nip57.ts
+import { bech32 } from "@scure/base";
+
+// pure.ts
+import { schnorr } from "@noble/curves/secp256k1";
+import { bytesToHex as bytesToHex2 } from "@noble/hashes/utils";
+
+// core.ts
+var verifiedSymbol = Symbol("verified");
+var isRecord = (obj) => obj instanceof Object;
+function validateEvent(event) {
+  if (!isRecord(event))
+    return false;
+  if (typeof event.kind !== "number")
+    return false;
+  if (typeof event.content !== "string")
+    return false;
+  if (typeof event.created_at !== "number")
+    return false;
+  if (typeof event.pubkey !== "string")
+    return false;
+  if (!event.pubkey.match(/^[a-f0-9]{64}$/))
+    return false;
+  if (!Array.isArray(event.tags))
+    return false;
+  for (let i2 = 0; i2 < event.tags.length; i2++) {
+    let tag = event.tags[i2];
+    if (!Array.isArray(tag))
+      return false;
+    for (let j = 0; j < tag.length; j++) {
+      if (typeof tag[j] !== "string")
+        return false;
+    }
+  }
+  return true;
+}
+
+// pure.ts
+import { sha256 } from "@noble/hashes/sha256";
+
+// utils.ts
+import { bytesToHex, hexToBytes } from "@noble/hashes/utils";
+var utf8Decoder = new TextDecoder("utf-8");
+var utf8Encoder = new TextEncoder();
+
+// pure.ts
+var JS = class {
+  generateSecretKey() {
+    return schnorr.utils.randomPrivateKey();
+  }
+  getPublicKey(secretKey) {
+    return bytesToHex2(schnorr.getPublicKey(secretKey));
+  }
+  finalizeEvent(t, secretKey) {
+    const event = t;
+    event.pubkey = bytesToHex2(schnorr.getPublicKey(secretKey));
+    event.id = getEventHash(event);
+    event.sig = bytesToHex2(schnorr.sign(getEventHash(event), secretKey));
+    event[verifiedSymbol] = true;
+    return event;
+  }
+  verifyEvent(event) {
+    if (typeof event[verifiedSymbol] === "boolean")
+      return event[verifiedSymbol];
+    const hash = getEventHash(event);
+    if (hash !== event.id) {
+      event[verifiedSymbol] = false;
+      return false;
+    }
+    try {
+      const valid = schnorr.verify(event.sig, hash, event.pubkey);
+      event[verifiedSymbol] = valid;
+      return valid;
+    } catch (err) {
+      event[verifiedSymbol] = false;
+      return false;
+    }
+  }
+};
+function serializeEvent(evt) {
+  if (!validateEvent(evt))
+    throw new Error("can't serialize event with wrong or missing properties");
+  return JSON.stringify([0, evt.pubkey, evt.created_at, evt.kind, evt.tags, evt.content]);
+}
+function getEventHash(event) {
+  let eventHash = sha256(utf8Encoder.encode(serializeEvent(event)));
+  return bytesToHex2(eventHash);
+}
+var i = new JS();
+var generateSecretKey = i.generateSecretKey;
+var getPublicKey = i.getPublicKey;
+var finalizeEvent = i.finalizeEvent;
+var verifyEvent = i.verifyEvent;
+
+// kinds.ts
+function isReplaceableKind(kind) {
+  return [0, 3].includes(kind) || 1e4 <= kind && kind < 2e4;
+}
+function isAddressableKind(kind) {
+  return 3e4 <= kind && kind < 4e4;
+}
+
+// nip57.ts
+var _fetch;
+try {
+  _fetch = fetch;
+} catch {
+}
+function useFetchImplementation(fetchImplementation) {
+  _fetch = fetchImplementation;
+}
+async function getZapEndpoint(metadata) {
+  try {
+    let lnurl = "";
+    let { lud06, lud16 } = JSON.parse(metadata.content);
+    if (lud06) {
+      let { words } = bech32.decode(lud06, 1e3);
+      let data = bech32.fromWords(words);
+      lnurl = utf8Decoder.decode(data);
+    } else if (lud16) {
+      let [name, domain] = lud16.split("@");
+      lnurl = new URL(`/.well-known/lnurlp/${name}`, `https://${domain}`).toString();
+    } else {
+      return null;
+    }
+    let res = await _fetch(lnurl);
+    let body = await res.json();
+    if (body.allowsNostr && body.nostrPubkey) {
+      return body.callback;
+    }
+  } catch (err) {
+  }
+  return null;
+}
+function makeZapRequest(params) {
+  let zr = {
+    kind: 9734,
+    created_at: Math.round(Date.now() / 1e3),
+    content: params.comment || "",
+    tags: [
+      ["p", "pubkey" in params ? params.pubkey : params.event.pubkey],
+      ["amount", params.amount.toString()],
+      ["relays", ...params.relays]
+    ]
+  };
+  if ("event" in params) {
+    zr.tags.push(["e", params.event.id]);
+    if (isReplaceableKind(params.event.kind)) {
+      const a = ["a", `${params.event.kind}:${params.event.pubkey}:`];
+      zr.tags.push(a);
+    } else if (isAddressableKind(params.event.kind)) {
+      let d = params.event.tags.find(([t, v]) => t === "d" && v);
+      if (!d)
+        throw new Error("d tag not found or is empty");
+      const a = ["a", `${params.event.kind}:${params.event.pubkey}:${d[1]}`];
+      zr.tags.push(a);
+    }
+    zr.tags.push(["k", params.event.kind.toString()]);
+  }
+  return zr;
+}
+function validateZapRequest(zapRequestString) {
+  let zapRequest;
+  try {
+    zapRequest = JSON.parse(zapRequestString);
+  } catch (err) {
+    return "Invalid zap request JSON.";
+  }
+  if (!validateEvent(zapRequest))
+    return "Zap request is not a valid Nostr event.";
+  if (!verifyEvent(zapRequest))
+    return "Invalid signature on zap request.";
+  let p = zapRequest.tags.find(([t, v]) => t === "p" && v);
+  if (!p)
+    return "Zap request doesn't have a 'p' tag.";
+  if (!p[1].match(/^[a-f0-9]{64}$/))
+    return "Zap request 'p' tag is not valid hex.";
+  let e = zapRequest.tags.find(([t, v]) => t === "e" && v);
+  if (e && !e[1].match(/^[a-f0-9]{64}$/))
+    return "Zap request 'e' tag is not valid hex.";
+  let relays = zapRequest.tags.find(([t, v]) => t === "relays" && v);
+  if (!relays)
+    return "Zap request doesn't have a 'relays' tag.";
+  return null;
+}
+function makeZapReceipt({
+  zapRequest,
+  preimage,
+  bolt11,
+  paidAt
+}) {
+  let zr = JSON.parse(zapRequest);
+  let tagsFromZapRequest = zr.tags.filter(([t]) => t === "e" || t === "p" || t === "a");
+  let zap = {
+    kind: 9735,
+    created_at: Math.round(paidAt.getTime() / 1e3),
+    content: "",
+    tags: [...tagsFromZapRequest, ["P", zr.pubkey], ["bolt11", bolt11], ["description", zapRequest]]
+  };
+  if (preimage) {
+    zap.tags.push(["preimage", preimage]);
+  }
+  return zap;
+}
+function getSatoshisAmountFromBolt11(bolt11) {
+  if (bolt11.length < 50) {
+    return 0;
+  }
+  bolt11 = bolt11.substring(0, 50);
+  const idx = bolt11.lastIndexOf("1");
+  if (idx === -1) {
+    return 0;
+  }
+  const hrp = bolt11.substring(0, idx);
+  if (!hrp.startsWith("lnbc")) {
+    return 0;
+  }
+  const amount = hrp.substring(4);
+  if (amount.length < 1) {
+    return 0;
+  }
+  const char = amount[amount.length - 1];
+  const digit = char.charCodeAt(0) - "0".charCodeAt(0);
+  const isDigit = digit >= 0 && digit <= 9;
+  let cutPoint = amount.length - 1;
+  if (isDigit) {
+    cutPoint++;
+  }
+  if (cutPoint < 1) {
+    return 0;
+  }
+  const num = parseInt(amount.substring(0, cutPoint));
+  switch (char) {
+    case "m":
+      return num * 1e5;
+    case "u":
+      return num * 100;
+    case "n":
+      return num / 10;
+    case "p":
+      return num / 1e4;
+    default:
+      return num * 1e8;
+  }
+}
+export {
+  getSatoshisAmountFromBolt11,
+  getZapEndpoint,
+  makeZapReceipt,
+  makeZapRequest,
+  useFetchImplementation,
+  validateZapRequest
+};