create daemon

thrower_daemon/node_modules/nostr-tools/lib/esm/nip99.js

@@ -0,0 +1,130 @@
+// kinds.ts
+var ClassifiedListing = 30402;
+var DraftClassifiedListing = 30403;
+
+// nip99.ts
+function validateEvent(event) {
+  if (![ClassifiedListing, DraftClassifiedListing].includes(event.kind))
+    return false;
+  const requiredTags = ["d", "title", "summary", "location", "published_at", "price"];
+  const requiredTagCount = requiredTags.length;
+  const tagCounts = {};
+  if (event.tags.length < requiredTagCount)
+    return false;
+  for (const tag of event.tags) {
+    if (tag.length < 2)
+      return false;
+    const [tagName, ...tagValues] = tag;
+    if (tagName == "published_at") {
+      const timestamp = parseInt(tagValues[0]);
+      if (isNaN(timestamp))
+        return false;
+    } else if (tagName == "price") {
+      if (tagValues.length < 2)
+        return false;
+      const price = parseInt(tagValues[0]);
+      if (isNaN(price) || tagValues[1].length != 3)
+        return false;
+    } else if ((tagName == "e" || tagName == "a") && tag.length != 3) {
+      return false;
+    }
+    if (requiredTags.includes(tagName)) {
+      tagCounts[tagName] = (tagCounts[tagName] || 0) + 1;
+    }
+  }
+  return Object.values(tagCounts).every((count) => count == 1) && Object.keys(tagCounts).length == requiredTagCount;
+}
+function parseEvent(event) {
+  if (!validateEvent(event)) {
+    throw new Error("Invalid event");
+  }
+  const listing = {
+    isDraft: event.kind === DraftClassifiedListing,
+    title: "",
+    summary: "",
+    content: event.content,
+    publishedAt: "",
+    location: "",
+    price: {
+      amount: "",
+      currency: ""
+    },
+    images: [],
+    hashtags: [],
+    additionalTags: {}
+  };
+  for (let i = 0; i < event.tags.length; i++) {
+    const tag = event.tags[i];
+    const [tagName, ...tagValues] = tag;
+    if (tagName == "title") {
+      listing.title = tagValues[0];
+    } else if (tagName == "summary") {
+      listing.summary = tagValues[0];
+    } else if (tagName == "published_at") {
+      listing.publishedAt = tagValues[0];
+    } else if (tagName == "location") {
+      listing.location = tagValues[0];
+    } else if (tagName == "price") {
+      listing.price.amount = tagValues[0];
+      listing.price.currency = tagValues[1];
+      if (tagValues.length == 3) {
+        listing.price.frequency = tagValues[2];
+      }
+    } else if (tagName == "image") {
+      listing.images.push({
+        url: tagValues[0],
+        dimensions: tagValues?.[1] ?? void 0
+      });
+    } else if (tagName == "t") {
+      listing.hashtags.push(tagValues[0]);
+    } else if (tagName == "e" || tagName == "a") {
+      listing.additionalTags[tagName] = [...tagValues];
+    }
+  }
+  return listing;
+}
+function generateEventTemplate(listing) {
+  const priceTag = ["price", listing.price.amount, listing.price.currency];
+  if (listing.price.frequency)
+    priceTag.push(listing.price.frequency);
+  const tags = [
+    ["d", listing.title.trim().toLowerCase().replace(/ /g, "-")],
+    ["title", listing.title],
+    ["published_at", listing.publishedAt],
+    ["summary", listing.summary],
+    ["location", listing.location],
+    priceTag
+  ];
+  for (let i = 0; i < listing.images.length; i++) {
+    const image = listing.images[i];
+    const imageTag = ["image", image.url];
+    if (image.dimensions)
+      imageTag.push(image.dimensions);
+    tags.push(imageTag);
+  }
+  for (let i = 0; i < listing.hashtags.length; i++) {
+    const t = listing.hashtags[i];
+    tags.push(["t", t]);
+  }
+  for (const [key, value] of Object.entries(listing.additionalTags)) {
+    if (Array.isArray(value)) {
+      for (let i = 0; i < value.length; i++) {
+        const val = value[i];
+        tags.push([key, val]);
+      }
+    } else {
+      tags.push([key, value]);
+    }
+  }
+  return {
+    kind: listing.isDraft ? DraftClassifiedListing : ClassifiedListing,
+    content: listing.content,
+    tags,
+    created_at: Math.floor(Date.now() / 1e3)
+  };
+}
+export {
+  generateEventTemplate,
+  parseEvent,
+  validateEvent
+};