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content: ao-the-asset pt2

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fn
2026-04-27 16:55:22 +01:00
parent 7c9dc57c29
commit 5a952a8809
2 changed files with 8 additions and 106 deletions
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2
src/config.ts
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@@ -4,7 +4,7 @@ export const BLOG_PERMALINK_PREFIX = "https://386900368387k.arweave.net"
export const BLOG_DEFAULT_DESCRIPTION = export const BLOG_DEFAULT_DESCRIPTION =
"A blog about cyberspace decentralization"; "A blog about cyberspace decentralization";
export const BLOG_TWITTER_HANDLE = ""; export const BLOG_TWITTER_HANDLE = "";
export const MANIFEST_TX_ID = "EnWM5yrSyOCGV9YSUe1bUYWsq_Yxg4uEaVF9ODdbWWk"; export const MANIFEST_TX_ID = "hm2oq70wCqZ89MjQNpnz1n2Ng6vjCsvZ5wMSzJvbR_g";
export const ARWEAVE_GATEWAY = "https://arweave.net"; export const ARWEAVE_GATEWAY = "https://arweave.net";
export const AO_URL = "https://push-1.forward.computer"; export const AO_URL = "https://push-1.forward.computer";

104
src/lib.ts
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@@ -1,7 +1,7 @@
import DOMPurify from "dompurify"; import DOMPurify from "dompurify";
import { marked, type Tokens } from "marked"; import { marked, type Tokens } from "marked";
import { parse as parseYaml } from "yaml"; import { parse as parseYaml } from "yaml";
import { AO_PROCESS_ID, AO_URL, ARWEAVE_GATEWAY, MANIFEST_TX_ID } from "./config"; import { ARWEAVE_GATEWAY, MANIFEST_TX_ID } from "./config";
import { parseManifest, type Frontmatter, type ManifestPost } from "./types"; import { parseManifest, type Frontmatter, type ManifestPost } from "./types";
const formatDate = (date: string): string => const formatDate = (date: string): string =>
@@ -71,114 +71,16 @@ export const getReadableDate = (date?: string | null): string | null => {
return formatDate(date); return formatDate(date);
}; };
const MANIFEST_ID_CACHE_TTL_MS = 60_000;
let manifestIdCache: { expiresAt: number; manifestId: string } | null = null;
const asObject = (value: unknown): Record<string, unknown> | null =>
typeof value === "object" && value !== null ? (value as Record<string, unknown>) : null;
const asString = (value: unknown): string | null =>
typeof value === "string" && value.length > 0 ? value : null;
const findManifestIdInTags = (tagsValue: unknown): string | null => {
const tags = Array.isArray(tagsValue) ? tagsValue : [];
for (const tag of tags) {
const tagObject = asObject(tag);
if (!tagObject) continue;
const name = asString(tagObject.name) ?? asString(tagObject.Name);
const value = asString(tagObject.value) ?? asString(tagObject.Value);
if ((name === "LatestManifestId" || name === "ManifestId") && value) return value;
}
return null;
};
const extractManifestId = (payload: unknown): string | null => {
const root = asObject(payload);
const results = asObject(root?.results);
if (!results) return null;
const outbox = asObject(results.outbox);
if (outbox) {
for (const message of Object.values(outbox)) {
const messageObject = asObject(message);
if (!messageObject) continue;
const direct = asString(messageObject.LatestManifestId) ?? asString(messageObject.ManifestId);
if (direct) return direct;
const tagged = findManifestIdInTags(messageObject.Tags);
if (tagged) return tagged;
}
}
const raw = asObject(results.raw);
const rawMessages = Array.isArray(raw?.Messages) ? raw.Messages : [];
for (const message of rawMessages) {
const messageObject = asObject(message);
if (!messageObject) continue;
const tagged = findManifestIdInTags(messageObject.Tags);
if (tagged) return tagged;
}
const json = asObject(results.json);
const body = json?.body;
const parsedBody =
typeof body === "string" ? asObject(JSON.parse(body)) : asObject(body);
const jsonMessages = Array.isArray(parsedBody?.Messages) ? parsedBody.Messages : [];
for (const message of jsonMessages) {
const messageObject = asObject(message);
if (!messageObject) continue;
const tagged = findManifestIdInTags(messageObject.Tags);
if (tagged) return tagged;
}
return null;
};
const getLatestManifestFromAo = async (): Promise<string | null> => {
try {
const now = Date.now();
if (manifestIdCache && manifestIdCache.expiresAt > now) {
return manifestIdCache.manifestId;
}
const url = `${AO_URL}/${AO_PROCESS_ID}~process@1.0/compute?Action=Get&require-codec=application/json&accept-bundle=true`;
const response = await fetch(url, { cache: "no-store" });
if (!response.ok) return null;
const payload: unknown = await response.json();
const manifestId = extractManifestId(payload);
if (!manifestId) return null;
manifestIdCache = {
expiresAt: now + MANIFEST_ID_CACHE_TTL_MS,
manifestId
};
return manifestId;
} catch {
return null;
}
};
export const loadManifest = async (): Promise<ManifestPost[]> => { export const loadManifest = async (): Promise<ManifestPost[]> => {
const loadByTxId = async (manifestTxId: string): Promise<ManifestPost[]> => { const response = await fetch(arweaveUrl(MANIFEST_TX_ID));
const response = await fetch(arweaveUrl(manifestTxId));
if (!response.ok) { if (!response.ok) {
throw new Error(`Failed to load manifest (${response.status})`); throw new Error(`Failed to load manifest (${response.status})`);
} }
const payload: unknown = await response.json(); const payload: unknown = await response.json();
return parseManifest(payload); return parseManifest(payload);
}; };
try {
return await loadByTxId(MANIFEST_TX_ID);
} catch (manifestError) {
const latestManifestTxId = await getLatestManifestFromAo();
if (!latestManifestTxId || latestManifestTxId === MANIFEST_TX_ID) {
throw manifestError;
}
return loadByTxId(latestManifestTxId);
}
};
const isObject = (value: unknown): value is Record<string, unknown> => const isObject = (value: unknown): value is Record<string, unknown> =>
typeof value === "object" && value !== null; typeof value === "object" && value !== null;