git.stevedylan.dev

packages/cli/src/lib/atproto.ts 18.3 K raw

import { Agent, AtpAgent } from "@atproto/api";
import * as mimeTypes from "mime-types";
import * as fs from "node:fs/promises";
import * as path from "node:path";
import { stripMarkdownForText, resolvePostPath } from "./markdown";
import { getOAuthClient } from "./oauth-client";
import type {
	BlobObject,
	BlogPost,
	Credentials,
	PublicationRecord,
	PublisherConfig,
	StrongRef,
} from "./types";
import { isAppPasswordCredentials, isOAuthCredentials } from "./types";

/**
 * Type guard to check if a record value is a DocumentRecord
 */
function isDocumentRecord(value: unknown): value is DocumentRecord {
	if (!value || typeof value !== "object") return false;
	const v = value as Record<string, unknown>;
	return (
		v.$type === "site.standard.document" &&
		typeof v.title === "string" &&
		typeof v.site === "string" &&
		typeof v.path === "string" &&
		typeof v.textContent === "string" &&
		typeof v.publishedAt === "string"
	);
}

async function fileExists(filePath: string): Promise<boolean> {
	try {
		await fs.access(filePath);
		return true;
	} catch {
		return false;
	}
}

/**
 * Resolve a handle to a DID
 */
export async function resolveHandleToDid(handle: string): Promise<string> {
	if (handle.startsWith("did:")) {
		return handle;
	}

	// Try to resolve handle via Bluesky API
	const resolveUrl = `https://public.api.bsky.app/xrpc/com.atproto.identity.resolveHandle?handle=${encodeURIComponent(handle)}`;
	const resolveResponse = await fetch(resolveUrl);
	if (!resolveResponse.ok) {
		throw new Error("Could not resolve handle");
	}
	const resolveData = (await resolveResponse.json()) as { did: string };
	return resolveData.did;
}

export async function resolveHandleToPDS(handle: string): Promise<string> {
	// First, resolve the handle to a DID
	const did = await resolveHandleToDid(handle);

	// Now resolve the DID to get the PDS URL from the DID document
	let pdsUrl: string | undefined;

	if (did.startsWith("did:plc:")) {
		// Fetch DID document from plc.directory
		const didDocUrl = `https://plc.directory/${did}`;
		const didDocResponse = await fetch(didDocUrl);
		if (!didDocResponse.ok) {
			throw new Error("Could not fetch DID document");
		}
		const didDoc = (await didDocResponse.json()) as {
			service?: Array<{ id: string; type: string; serviceEndpoint: string }>;
		};

		// Find the PDS service endpoint
		const pdsService = didDoc.service?.find(
			(s) => s.id === "#atproto_pds" || s.type === "AtprotoPersonalDataServer",
		);
		pdsUrl = pdsService?.serviceEndpoint;
	} else if (did.startsWith("did:web:")) {
		// For did:web, fetch the DID document from the domain
		const domain = did.replace("did:web:", "");
		const didDocUrl = `https://${domain}/.well-known/did.json`;
		const didDocResponse = await fetch(didDocUrl);
		if (!didDocResponse.ok) {
			throw new Error("Could not fetch DID document");
		}
		const didDoc = (await didDocResponse.json()) as {
			service?: Array<{ id: string; type: string; serviceEndpoint: string }>;
		};

		const pdsService = didDoc.service?.find(
			(s) => s.id === "#atproto_pds" || s.type === "AtprotoPersonalDataServer",
		);
		pdsUrl = pdsService?.serviceEndpoint;
	}

	if (!pdsUrl) {
		throw new Error("Could not find PDS URL for user");
	}

	return pdsUrl;
}

export interface CreatePublicationOptions {
	url: string;
	name: string;
	description?: string;
	iconPath?: string;
	showInDiscover?: boolean;
}

export async function createAgent(credentials: Credentials): Promise<Agent> {
	if (isOAuthCredentials(credentials)) {
		// OAuth flow - restore session from stored tokens
		const client = await getOAuthClient();
		try {
			const oauthSession = await client.restore(credentials.did);
			// Wrap the OAuth session in an Agent which provides the atproto API
			return new Agent(oauthSession);
		} catch (error) {
			if (error instanceof Error) {
				// Check for common OAuth errors
				if (
					error.message.includes("expired") ||
					error.message.includes("revoked")
				) {
					throw new Error(
						`OAuth session expired or revoked. Please run 'sequoia login' to re-authenticate.`,
					);
				}
			}
			throw error;
		}
	}

	// App password flow
	if (!isAppPasswordCredentials(credentials)) {
		throw new Error("Invalid credential type");
	}
	const agent = new AtpAgent({ service: credentials.pdsUrl });

	await agent.login({
		identifier: credentials.identifier,
		password: credentials.password,
	});

	return agent;
}

export async function uploadImage(
	agent: Agent,
	imagePath: string,
): Promise<BlobObject | undefined> {
	if (!(await fileExists(imagePath))) {
		return undefined;
	}

	try {
		const imageBuffer = await fs.readFile(imagePath);
		const mimeType = mimeTypes.lookup(imagePath) || "application/octet-stream";

		const response = await agent.com.atproto.repo.uploadBlob(
			new Uint8Array(imageBuffer),
			{
				encoding: mimeType,
			},
		);

		return {
			$type: "blob",
			ref: {
				$link: response.data.blob.ref.toString(),
			},
			mimeType,
			size: imageBuffer.byteLength,
		};
	} catch (error) {
		console.error(`Error uploading image ${imagePath}:`, error);
		return undefined;
	}
}

export async function resolveImagePath(
	ogImage: string,
	imagesDir: string | undefined,
	contentDir: string,
): Promise<string | null> {
	// Try multiple resolution strategies

	// 1. If imagesDir is specified, look there
	if (imagesDir) {
		// Get the base name of the images directory (e.g., "blog-images" from "public/blog-images")
		const imagesDirBaseName = path.basename(imagesDir);

		// Check if ogImage contains the images directory name and extract the relative path
		// e.g., "/blog-images/other/file.png" with imagesDirBaseName "blog-images" -> "other/file.png"
		const imagesDirIndex = ogImage.indexOf(imagesDirBaseName);
		let relativePath: string;

		if (imagesDirIndex !== -1) {
			// Extract everything after "blog-images/"
			const afterImagesDir = ogImage.substring(
				imagesDirIndex + imagesDirBaseName.length,
			);
			// Remove leading slash if present
			relativePath = afterImagesDir.replace(/^[/\\]/, "");
		} else {
			// Fall back to just the filename
			relativePath = path.basename(ogImage);
		}

		const imagePath = path.join(imagesDir, relativePath);
		if (await fileExists(imagePath)) {
			const stat = await fs.stat(imagePath);
			if (stat.size > 0) {
				return imagePath;
			}
		}
	}

	// 2. Try the ogImage path directly (if it's absolute)
	if (path.isAbsolute(ogImage)) {
		return ogImage;
	}

	// 3. Try relative to content directory
	const contentRelative = path.join(contentDir, ogImage);
	if (await fileExists(contentRelative)) {
		const stat = await fs.stat(contentRelative);
		if (stat.size > 0) {
			return contentRelative;
		}
	}

	return null;
}

export async function createDocument(
	agent: Agent,
	post: BlogPost,
	config: PublisherConfig,
	coverImage?: BlobObject,
): Promise<string> {
	const postPath = resolvePostPath(
		post,
		config.pathPrefix,
		config.pathTemplate,
	);
	const publishDate = new Date(post.frontmatter.publishDate);

	// Determine textContent: use configured field from frontmatter, or fallback to markdown body
	let textContent: string;
	if (
		config.textContentField &&
		post.rawFrontmatter?.[config.textContentField]
	) {
		textContent = String(post.rawFrontmatter[config.textContentField]);
	} else {
		textContent = stripMarkdownForText(post.content);
	}

	const record: Record<string, unknown> = {
		$type: "site.standard.document",
		title: post.frontmatter.title,
		site: config.publicationUri,
		path: postPath,
		textContent: textContent.slice(0, 10000),
		publishedAt: publishDate.toISOString(),
		canonicalUrl: `${config.siteUrl}${postPath}`,
	};

	if (post.frontmatter.description) {
		record.description = post.frontmatter.description;
	}

	if (coverImage) {
		record.coverImage = coverImage;
	}

	if (post.frontmatter.tags && post.frontmatter.tags.length > 0) {
		record.tags = post.frontmatter.tags;
	}

	const response = await agent.com.atproto.repo.createRecord({
		repo: agent.did!,
		collection: "site.standard.document",
		record,
	});

	return response.data.uri;
}

export async function updateDocument(
	agent: Agent,
	post: BlogPost,
	atUri: string,
	config: PublisherConfig,
	coverImage?: BlobObject,
): Promise<void> {
	// Parse the atUri to get the collection and rkey
	// Format: at://did:plc:xxx/collection/rkey
	const uriMatch = atUri.match(/^at:\/\/([^/]+)\/([^/]+)\/(.+)$/);
	if (!uriMatch) {
		throw new Error(`Invalid atUri format: ${atUri}`);
	}

	const [, , collection, rkey] = uriMatch;

	const postPath = resolvePostPath(
		post,
		config.pathPrefix,
		config.pathTemplate,
	);
	const publishDate = new Date(post.frontmatter.publishDate);

	// Determine textContent: use configured field from frontmatter, or fallback to markdown body
	let textContent: string;
	if (
		config.textContentField &&
		post.rawFrontmatter?.[config.textContentField]
	) {
		textContent = String(post.rawFrontmatter[config.textContentField]);
	} else {
		textContent = stripMarkdownForText(post.content);
	}

	// Fetch existing record to preserve PDS-side fields (e.g. bskyPostRef)
	const existingResponse = await agent.com.atproto.repo.getRecord({
		repo: agent.did!,
		collection: collection!,
		rkey: rkey!,
	});
	const existingRecord = existingResponse.data.value as Record<string, unknown>;

	const record: Record<string, unknown> = {
		...existingRecord,
		$type: "site.standard.document",
		title: post.frontmatter.title,
		site: config.publicationUri,
		path: postPath,
		textContent: textContent.slice(0, 10000),
		publishedAt: publishDate.toISOString(),
		canonicalUrl: `${config.siteUrl}${postPath}`,
	};

	if (post.frontmatter.description) {
		record.description = post.frontmatter.description;
	}

	if (coverImage) {
		record.coverImage = coverImage;
	}

	if (post.frontmatter.tags && post.frontmatter.tags.length > 0) {
		record.tags = post.frontmatter.tags;
	}

	await agent.com.atproto.repo.putRecord({
		repo: agent.did!,
		collection: collection!,
		rkey: rkey!,
		record,
	});
}

export function parseAtUri(
	atUri: string,
): { did: string; collection: string; rkey: string } | null {
	const match = atUri.match(/^at:\/\/([^/]+)\/([^/]+)\/(.+)$/);
	if (!match) return null;
	return {
		did: match[1]!,
		collection: match[2]!,
		rkey: match[3]!,
	};
}

export interface DocumentRecord {
	$type: "site.standard.document";
	title: string;
	site: string;
	path: string;
	textContent: string;
	publishedAt: string;
	canonicalUrl?: string;
	description?: string;
	coverImage?: BlobObject;
	tags?: string[];
	location?: string;
}

export interface ListDocumentsResult {
	uri: string;
	cid: string;
	value: DocumentRecord;
}

export async function listDocuments(
	agent: Agent,
	publicationUri?: string,
): Promise<ListDocumentsResult[]> {
	const documents: ListDocumentsResult[] = [];
	let cursor: string | undefined;

	do {
		const response = await agent.com.atproto.repo.listRecords({
			repo: agent.did!,
			collection: "site.standard.document",
			limit: 100,
			cursor,
		});

		for (const record of response.data.records) {
			if (!isDocumentRecord(record.value)) {
				continue;
			}

			// If publicationUri is specified, only include documents from that publication
			if (publicationUri && record.value.site !== publicationUri) {
				continue;
			}

			documents.push({
				uri: record.uri,
				cid: record.cid,
				value: record.value,
			});
		}

		cursor = response.data.cursor;
	} while (cursor);

	return documents;
}

export async function createPublication(
	agent: Agent,
	options: CreatePublicationOptions,
): Promise<string> {
	let icon: BlobObject | undefined;

	if (options.iconPath) {
		icon = await uploadImage(agent, options.iconPath);
	}

	const record: Record<string, unknown> = {
		$type: "site.standard.publication",
		url: options.url,
		name: options.name,
		createdAt: new Date().toISOString(),
	};

	if (options.description) {
		record.description = options.description;
	}

	if (icon) {
		record.icon = icon;
	}

	if (options.showInDiscover !== undefined) {
		record.preferences = {
			showInDiscover: options.showInDiscover,
		};
	}

	const response = await agent.com.atproto.repo.createRecord({
		repo: agent.did!,
		collection: "site.standard.publication",
		record,
	});

	return response.data.uri;
}

export interface GetPublicationResult {
	uri: string;
	cid: string;
	value: PublicationRecord;
}

export async function getPublication(
	agent: Agent,
	publicationUri: string,
): Promise<GetPublicationResult | null> {
	const parsed = parseAtUri(publicationUri);
	if (!parsed) {
		return null;
	}

	try {
		const response = await agent.com.atproto.repo.getRecord({
			repo: parsed.did,
			collection: parsed.collection,
			rkey: parsed.rkey,
		});

		return {
			uri: publicationUri,
			cid: response.data.cid!,
			value: response.data.value as unknown as PublicationRecord,
		};
	} catch {
		return null;
	}
}

export interface UpdatePublicationOptions {
	url?: string;
	name?: string;
	description?: string;
	iconPath?: string;
	showInDiscover?: boolean;
}

export async function updatePublication(
	agent: Agent,
	publicationUri: string,
	options: UpdatePublicationOptions,
	existingRecord: PublicationRecord,
): Promise<void> {
	const parsed = parseAtUri(publicationUri);
	if (!parsed) {
		throw new Error(`Invalid publication URI: ${publicationUri}`);
	}

	// Build updated record, preserving createdAt and $type
	const record: Record<string, unknown> = {
		$type: existingRecord.$type,
		url: options.url ?? existingRecord.url,
		name: options.name ?? existingRecord.name,
		createdAt: existingRecord.createdAt,
	};

	// Handle description - can be cleared with empty string
	if (options.description !== undefined) {
		if (options.description) {
			record.description = options.description;
		}
		// If empty string, don't include description (clears it)
	} else if (existingRecord.description) {
		record.description = existingRecord.description;
	}

	// Handle icon - upload new if provided, otherwise keep existing
	if (options.iconPath) {
		const icon = await uploadImage(agent, options.iconPath);
		if (icon) {
			record.icon = icon;
		}
	} else if (existingRecord.icon) {
		record.icon = existingRecord.icon;
	}

	// Handle preferences
	if (options.showInDiscover !== undefined) {
		record.preferences = {
			showInDiscover: options.showInDiscover,
		};
	} else if (existingRecord.preferences) {
		record.preferences = existingRecord.preferences;
	}

	await agent.com.atproto.repo.putRecord({
		repo: parsed.did,
		collection: parsed.collection,
		rkey: parsed.rkey,
		record,
	});
}

// --- Bluesky Post Creation ---

export interface CreateBlueskyPostOptions {
	title: string;
	description?: string;
	bskyPost?: string;
	canonicalUrl: string;
	coverImage?: BlobObject;
	publishedAt: string; // Used as createdAt for the post
}

/**
 * Count graphemes in a string (for Bluesky's 300 grapheme limit)
 */
function countGraphemes(str: string): number {
	// Use Intl.Segmenter if available, otherwise fallback to spread operator
	if (typeof Intl !== "undefined" && Intl.Segmenter) {
		const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });
		return [...segmenter.segment(str)].length;
	}
	return [...str].length;
}

/**
 * Truncate a string to a maximum number of graphemes
 */
function truncateToGraphemes(str: string, maxGraphemes: number): string {
	if (typeof Intl !== "undefined" && Intl.Segmenter) {
		const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });
		const segments = [...segmenter.segment(str)];
		if (segments.length <= maxGraphemes) return str;
		return `${segments
			.slice(0, maxGraphemes - 3)
			.map((s) => s.segment)
			.join("")}...`;
	}
	// Fallback
	const chars = [...str];
	if (chars.length <= maxGraphemes) return str;
	return `${chars.slice(0, maxGraphemes - 3).join("")}...`;
}

/**
 * Create a Bluesky post with external link embed
 */
export async function createBlueskyPost(
	agent: Agent,
	options: CreateBlueskyPostOptions,
): Promise<StrongRef> {
	const {
		title,
		description,
		bskyPost,
		canonicalUrl,
		coverImage,
		publishedAt,
	} = options;

	// Build post text: title + description
	// Max 300 graphemes for Bluesky posts
	const MAX_GRAPHEMES = 300;

	let postText: string;

	if (bskyPost) {
		// Custom bsky post overrides any default behavior
		postText = bskyPost;
	} else if (description) {
		// Try: title + description
		const fullText = `${title}\n\n${description}`;
		if (countGraphemes(fullText) <= MAX_GRAPHEMES) {
			postText = fullText;
		} else {
			// Truncate description to fit
			const availableForDesc =
				MAX_GRAPHEMES - countGraphemes(title) - countGraphemes("\n\n");
			if (availableForDesc > 10) {
				const truncatedDesc = truncateToGraphemes(
					description,
					availableForDesc,
				);
				postText = `${title}\n\n${truncatedDesc}`;
			} else {
				// Just title
				postText = `${title}`;
			}
		}
	} else {
		// Just title
		postText = `${title}`;
	}

	// Final truncation in case title or bskyPost are longer than expected
	if (countGraphemes(postText) > MAX_GRAPHEMES) {
		postText = truncateToGraphemes(postText, MAX_GRAPHEMES);
	}

	// Build external embed
	const embed: Record<string, unknown> = {
		$type: "app.bsky.embed.external",
		external: {
			uri: canonicalUrl,
			title: title.substring(0, 500), // Max 500 chars for title
			description: (description || "").substring(0, 1000), // Max 1000 chars for description
		},
	};

	// Add thumbnail if coverImage is available
	if (coverImage) {
		(embed.external as Record<string, unknown>).thumb = coverImage;
	}

	// Create the post record
	const record: Record<string, unknown> = {
		$type: "app.bsky.feed.post",
		text: postText,
		embed,
		createdAt: new Date(publishedAt).toISOString(),
	};

	const response = await agent.com.atproto.repo.createRecord({
		repo: agent.did!,
		collection: "app.bsky.feed.post",
		record,
	});

	return {
		uri: response.data.uri,
		cid: response.data.cid,
	};
}

/**
 * Add bskyPostRef to an existing document record
 */
export async function addBskyPostRefToDocument(
	agent: Agent,
	documentAtUri: string,
	bskyPostRef: StrongRef,
): Promise<void> {
	const parsed = parseAtUri(documentAtUri);
	if (!parsed) {
		throw new Error(`Invalid document URI: ${documentAtUri}`);
	}

	// Fetch existing record
	const existingRecord = await agent.com.atproto.repo.getRecord({
		repo: parsed.did,
		collection: parsed.collection,
		rkey: parsed.rkey,
	});

	// Add bskyPostRef to the record
	const updatedRecord = {
		...(existingRecord.data.value as Record<string, unknown>),
		bskyPostRef,
	};

	// Update the record
	await agent.com.atproto.repo.putRecord({
		repo: parsed.did,
		collection: parsed.collection,
		rkey: parsed.rkey,
		record: updatedRecord,
	});
}

1	import { Agent, AtpAgent } from "@atproto/api";
2	import * as mimeTypes from "mime-types";
3	import * as fs from "node:fs/promises";
4	import * as path from "node:path";
5	import { stripMarkdownForText, resolvePostPath } from "./markdown";
6	import { getOAuthClient } from "./oauth-client";
7	import type {
8	BlobObject,
9	BlogPost,
10	Credentials,
11	PublicationRecord,
12	PublisherConfig,
13	StrongRef,
14	} from "./types";
15	import { isAppPasswordCredentials, isOAuthCredentials } from "./types";
16
17	/**
18	* Type guard to check if a record value is a DocumentRecord
19	*/
20	function isDocumentRecord(value: unknown): value is DocumentRecord {
21	if (!value \|\| typeof value !== "object") return false;
22	const v = value as Record<string, unknown>;
23	return (
24	v.$type === "site.standard.document" &&
25	typeof v.title === "string" &&
26	typeof v.site === "string" &&
27	typeof v.path === "string" &&
28	typeof v.textContent === "string" &&
29	typeof v.publishedAt === "string"
30	);
31	}
32
33	async function fileExists(filePath: string): Promise<boolean> {
34	try {
35	await fs.access(filePath);
36	return true;
37	} catch {
38	return false;
39	}
40	}
41
42	/**
43	* Resolve a handle to a DID
44	*/
45	export async function resolveHandleToDid(handle: string): Promise<string> {
46	if (handle.startsWith("did:")) {
47	return handle;
48	}
49
50	// Try to resolve handle via Bluesky API
51	const resolveUrl = `https://public.api.bsky.app/xrpc/com.atproto.identity.resolveHandle?handle=${encodeURIComponent(handle)}`;
52	const resolveResponse = await fetch(resolveUrl);
53	if (!resolveResponse.ok) {
54	throw new Error("Could not resolve handle");
55	}
56	const resolveData = (await resolveResponse.json()) as { did: string };
57	return resolveData.did;
58	}
59
60	export async function resolveHandleToPDS(handle: string): Promise<string> {
61	// First, resolve the handle to a DID
62	const did = await resolveHandleToDid(handle);
63
64	// Now resolve the DID to get the PDS URL from the DID document
65	let pdsUrl: string \| undefined;
66
67	if (did.startsWith("did:plc:")) {
68	// Fetch DID document from plc.directory
69	const didDocUrl = `https://plc.directory/${did}`;
70	const didDocResponse = await fetch(didDocUrl);
71	if (!didDocResponse.ok) {
72	throw new Error("Could not fetch DID document");
73	}
74	const didDoc = (await didDocResponse.json()) as {
75	service?: Array<{ id: string; type: string; serviceEndpoint: string }>;
76	};
77
78	// Find the PDS service endpoint
79	const pdsService = didDoc.service?.find(
80	(s) => s.id === "#atproto_pds" \|\| s.type === "AtprotoPersonalDataServer",
81	);
82	pdsUrl = pdsService?.serviceEndpoint;
83	} else if (did.startsWith("did:web:")) {
84	// For did:web, fetch the DID document from the domain
85	const domain = did.replace("did:web:", "");
86	const didDocUrl = `https://${domain}/.well-known/did.json`;
87	const didDocResponse = await fetch(didDocUrl);
88	if (!didDocResponse.ok) {
89	throw new Error("Could not fetch DID document");
90	}
91	const didDoc = (await didDocResponse.json()) as {
92	service?: Array<{ id: string; type: string; serviceEndpoint: string }>;
93	};
94
95	const pdsService = didDoc.service?.find(
96	(s) => s.id === "#atproto_pds" \|\| s.type === "AtprotoPersonalDataServer",
97	);
98	pdsUrl = pdsService?.serviceEndpoint;
99	}
100
101	if (!pdsUrl) {
102	throw new Error("Could not find PDS URL for user");
103	}
104
105	return pdsUrl;
106	}
107
108	export interface CreatePublicationOptions {
109	url: string;
110	name: string;
111	description?: string;
112	iconPath?: string;
113	showInDiscover?: boolean;
114	}
115
116	export async function createAgent(credentials: Credentials): Promise<Agent> {
117	if (isOAuthCredentials(credentials)) {
118	// OAuth flow - restore session from stored tokens
119	const client = await getOAuthClient();
120	try {
121	const oauthSession = await client.restore(credentials.did);
122	// Wrap the OAuth session in an Agent which provides the atproto API
123	return new Agent(oauthSession);
124	} catch (error) {
125	if (error instanceof Error) {
126	// Check for common OAuth errors
127	if (
128	error.message.includes("expired") \|\|
129	error.message.includes("revoked")
130	) {
131	throw new Error(
132	`OAuth session expired or revoked. Please run 'sequoia login' to re-authenticate.`,
133	);
134	}
135	}
136	throw error;
137	}
138	}
139
140	// App password flow
141	if (!isAppPasswordCredentials(credentials)) {
142	throw new Error("Invalid credential type");
143	}
144	const agent = new AtpAgent({ service: credentials.pdsUrl });
145
146	await agent.login({
147	identifier: credentials.identifier,
148	password: credentials.password,
149	});
150
151	return agent;
152	}
153
154	export async function uploadImage(
155	agent: Agent,
156	imagePath: string,
157	): Promise<BlobObject \| undefined> {
158	if (!(await fileExists(imagePath))) {
159	return undefined;
160	}
161
162	try {
163	const imageBuffer = await fs.readFile(imagePath);
164	const mimeType = mimeTypes.lookup(imagePath) \|\| "application/octet-stream";
165
166	const response = await agent.com.atproto.repo.uploadBlob(
167	new Uint8Array(imageBuffer),
168	{
169	encoding: mimeType,
170	},
171	);
172
173	return {
174	$type: "blob",
175	ref: {
176	$link: response.data.blob.ref.toString(),
177	},
178	mimeType,
179	size: imageBuffer.byteLength,
180	};
181	} catch (error) {
182	console.error(`Error uploading image ${imagePath}:`, error);
183	return undefined;
184	}
185	}
186
187	export async function resolveImagePath(
188	ogImage: string,
189	imagesDir: string \| undefined,
190	contentDir: string,
191	): Promise<string \| null> {
192	// Try multiple resolution strategies
193
194	// 1. If imagesDir is specified, look there
195	if (imagesDir) {
196	// Get the base name of the images directory (e.g., "blog-images" from "public/blog-images")
197	const imagesDirBaseName = path.basename(imagesDir);
198
199	// Check if ogImage contains the images directory name and extract the relative path
200	// e.g., "/blog-images/other/file.png" with imagesDirBaseName "blog-images" -> "other/file.png"
201	const imagesDirIndex = ogImage.indexOf(imagesDirBaseName);
202	let relativePath: string;
203
204	if (imagesDirIndex !== -1) {
205	// Extract everything after "blog-images/"
206	const afterImagesDir = ogImage.substring(
207	imagesDirIndex + imagesDirBaseName.length,
208	);
209	// Remove leading slash if present
210	relativePath = afterImagesDir.replace(/^[/\\]/, "");
211	} else {
212	// Fall back to just the filename
213	relativePath = path.basename(ogImage);
214	}
215
216	const imagePath = path.join(imagesDir, relativePath);
217	if (await fileExists(imagePath)) {
218	const stat = await fs.stat(imagePath);
219	if (stat.size > 0) {
220	return imagePath;
221	}
222	}
223	}
224
225	// 2. Try the ogImage path directly (if it's absolute)
226	if (path.isAbsolute(ogImage)) {
227	return ogImage;
228	}
229
230	// 3. Try relative to content directory
231	const contentRelative = path.join(contentDir, ogImage);
232	if (await fileExists(contentRelative)) {
233	const stat = await fs.stat(contentRelative);
234	if (stat.size > 0) {
235	return contentRelative;
236	}
237	}
238
239	return null;
240	}
241
242	export async function createDocument(
243	agent: Agent,
244	post: BlogPost,
245	config: PublisherConfig,
246	coverImage?: BlobObject,
247	): Promise<string> {
248	const postPath = resolvePostPath(
249	post,
250	config.pathPrefix,
251	config.pathTemplate,
252	);
253	const publishDate = new Date(post.frontmatter.publishDate);
254
255	// Determine textContent: use configured field from frontmatter, or fallback to markdown body
256	let textContent: string;
257	if (
258	config.textContentField &&
259	post.rawFrontmatter?.[config.textContentField]
260	) {
261	textContent = String(post.rawFrontmatter[config.textContentField]);
262	} else {
263	textContent = stripMarkdownForText(post.content);
264	}
265
266	const record: Record<string, unknown> = {
267	$type: "site.standard.document",
268	title: post.frontmatter.title,
269	site: config.publicationUri,
270	path: postPath,
271	textContent: textContent.slice(0, 10000),
272	publishedAt: publishDate.toISOString(),
273	canonicalUrl: `${config.siteUrl}${postPath}`,
274	};
275
276	if (post.frontmatter.description) {
277	record.description = post.frontmatter.description;
278	}
279
280	if (coverImage) {
281	record.coverImage = coverImage;
282	}
283
284	if (post.frontmatter.tags && post.frontmatter.tags.length > 0) {
285	record.tags = post.frontmatter.tags;
286	}
287
288	const response = await agent.com.atproto.repo.createRecord({
289	repo: agent.did!,
290	collection: "site.standard.document",
291	record,
292	});
293
294	return response.data.uri;
295	}
296
297	export async function updateDocument(
298	agent: Agent,
299	post: BlogPost,
300	atUri: string,
301	config: PublisherConfig,
302	coverImage?: BlobObject,
303	): Promise<void> {
304	// Parse the atUri to get the collection and rkey
305	// Format: at://did:plc:xxx/collection/rkey
306	const uriMatch = atUri.match(/^at:\/\/([^/]+)\/([^/]+)\/(.+)$/);
307	if (!uriMatch) {
308	throw new Error(`Invalid atUri format: ${atUri}`);
309	}
310
311	const [, , collection, rkey] = uriMatch;
312
313	const postPath = resolvePostPath(
314	post,
315	config.pathPrefix,
316	config.pathTemplate,
317	);
318	const publishDate = new Date(post.frontmatter.publishDate);
319
320	// Determine textContent: use configured field from frontmatter, or fallback to markdown body
321	let textContent: string;
322	if (
323	config.textContentField &&
324	post.rawFrontmatter?.[config.textContentField]
325	) {
326	textContent = String(post.rawFrontmatter[config.textContentField]);
327	} else {
328	textContent = stripMarkdownForText(post.content);
329	}
330
331	// Fetch existing record to preserve PDS-side fields (e.g. bskyPostRef)
332	const existingResponse = await agent.com.atproto.repo.getRecord({
333	repo: agent.did!,
334	collection: collection!,
335	rkey: rkey!,
336	});
337	const existingRecord = existingResponse.data.value as Record<string, unknown>;
338
339	const record: Record<string, unknown> = {
340	...existingRecord,
341	$type: "site.standard.document",
342	title: post.frontmatter.title,
343	site: config.publicationUri,
344	path: postPath,
345	textContent: textContent.slice(0, 10000),
346	publishedAt: publishDate.toISOString(),
347	canonicalUrl: `${config.siteUrl}${postPath}`,
348	};
349
350	if (post.frontmatter.description) {
351	record.description = post.frontmatter.description;
352	}
353
354	if (coverImage) {
355	record.coverImage = coverImage;
356	}
357
358	if (post.frontmatter.tags && post.frontmatter.tags.length > 0) {
359	record.tags = post.frontmatter.tags;
360	}
361
362	await agent.com.atproto.repo.putRecord({
363	repo: agent.did!,
364	collection: collection!,
365	rkey: rkey!,
366	record,
367	});
368	}
369
370	export function parseAtUri(
371	atUri: string,
372	): { did: string; collection: string; rkey: string } \| null {
373	const match = atUri.match(/^at:\/\/([^/]+)\/([^/]+)\/(.+)$/);
374	if (!match) return null;
375	return {
376	did: match[1]!,
377	collection: match[2]!,
378	rkey: match[3]!,
379	};
380	}
381
382	export interface DocumentRecord {
383	$type: "site.standard.document";
384	title: string;
385	site: string;
386	path: string;
387	textContent: string;
388	publishedAt: string;
389	canonicalUrl?: string;
390	description?: string;
391	coverImage?: BlobObject;
392	tags?: string[];
393	location?: string;
394	}
395
396	export interface ListDocumentsResult {
397	uri: string;
398	cid: string;
399	value: DocumentRecord;
400	}
401
402	export async function listDocuments(
403	agent: Agent,
404	publicationUri?: string,
405	): Promise<ListDocumentsResult[]> {
406	const documents: ListDocumentsResult[] = [];
407	let cursor: string \| undefined;
408
409	do {
410	const response = await agent.com.atproto.repo.listRecords({
411	repo: agent.did!,
412	collection: "site.standard.document",
413	limit: 100,
414	cursor,
415	});
416
417	for (const record of response.data.records) {
418	if (!isDocumentRecord(record.value)) {
419	continue;
420	}
421
422	// If publicationUri is specified, only include documents from that publication
423	if (publicationUri && record.value.site !== publicationUri) {
424	continue;
425	}
426
427	documents.push({
428	uri: record.uri,
429	cid: record.cid,
430	value: record.value,
431	});
432	}
433
434	cursor = response.data.cursor;
435	} while (cursor);
436
437	return documents;
438	}
439
440	export async function createPublication(
441	agent: Agent,
442	options: CreatePublicationOptions,
443	): Promise<string> {
444	let icon: BlobObject \| undefined;
445
446	if (options.iconPath) {
447	icon = await uploadImage(agent, options.iconPath);
448	}
449
450	const record: Record<string, unknown> = {
451	$type: "site.standard.publication",
452	url: options.url,
453	name: options.name,
454	createdAt: new Date().toISOString(),
455	};
456
457	if (options.description) {
458	record.description = options.description;
459	}
460
461	if (icon) {
462	record.icon = icon;
463	}
464
465	if (options.showInDiscover !== undefined) {
466	record.preferences = {
467	showInDiscover: options.showInDiscover,
468	};
469	}
470
471	const response = await agent.com.atproto.repo.createRecord({
472	repo: agent.did!,
473	collection: "site.standard.publication",
474	record,
475	});
476
477	return response.data.uri;
478	}
479
480	export interface GetPublicationResult {
481	uri: string;
482	cid: string;
483	value: PublicationRecord;
484	}
485
486	export async function getPublication(
487	agent: Agent,
488	publicationUri: string,
489	): Promise<GetPublicationResult \| null> {
490	const parsed = parseAtUri(publicationUri);
491	if (!parsed) {
492	return null;
493	}
494
495	try {
496	const response = await agent.com.atproto.repo.getRecord({
497	repo: parsed.did,
498	collection: parsed.collection,
499	rkey: parsed.rkey,
500	});
501
502	return {
503	uri: publicationUri,
504	cid: response.data.cid!,
505	value: response.data.value as unknown as PublicationRecord,
506	};
507	} catch {
508	return null;
509	}
510	}
511
512	export interface UpdatePublicationOptions {
513	url?: string;
514	name?: string;
515	description?: string;
516	iconPath?: string;
517	showInDiscover?: boolean;
518	}
519
520	export async function updatePublication(
521	agent: Agent,
522	publicationUri: string,
523	options: UpdatePublicationOptions,
524	existingRecord: PublicationRecord,
525	): Promise<void> {
526	const parsed = parseAtUri(publicationUri);
527	if (!parsed) {
528	throw new Error(`Invalid publication URI: ${publicationUri}`);
529	}
530
531	// Build updated record, preserving createdAt and $type
532	const record: Record<string, unknown> = {
533	$type: existingRecord.$type,
534	url: options.url ?? existingRecord.url,
535	name: options.name ?? existingRecord.name,
536	createdAt: existingRecord.createdAt,
537	};
538
539	// Handle description - can be cleared with empty string
540	if (options.description !== undefined) {
541	if (options.description) {
542	record.description = options.description;
543	}
544	// If empty string, don't include description (clears it)
545	} else if (existingRecord.description) {
546	record.description = existingRecord.description;
547	}
548
549	// Handle icon - upload new if provided, otherwise keep existing
550	if (options.iconPath) {
551	const icon = await uploadImage(agent, options.iconPath);
552	if (icon) {
553	record.icon = icon;
554	}
555	} else if (existingRecord.icon) {
556	record.icon = existingRecord.icon;
557	}
558
559	// Handle preferences
560	if (options.showInDiscover !== undefined) {
561	record.preferences = {
562	showInDiscover: options.showInDiscover,
563	};
564	} else if (existingRecord.preferences) {
565	record.preferences = existingRecord.preferences;
566	}
567
568	await agent.com.atproto.repo.putRecord({
569	repo: parsed.did,
570	collection: parsed.collection,
571	rkey: parsed.rkey,
572	record,
573	});
574	}
575
576	// --- Bluesky Post Creation ---
577
578	export interface CreateBlueskyPostOptions {
579	title: string;
580	description?: string;
581	bskyPost?: string;
582	canonicalUrl: string;
583	coverImage?: BlobObject;
584	publishedAt: string; // Used as createdAt for the post
585	}
586
587	/**
588	* Count graphemes in a string (for Bluesky's 300 grapheme limit)
589	*/
590	function countGraphemes(str: string): number {
591	// Use Intl.Segmenter if available, otherwise fallback to spread operator
592	if (typeof Intl !== "undefined" && Intl.Segmenter) {
593	const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });
594	return [...segmenter.segment(str)].length;
595	}
596	return [...str].length;
597	}
598
599	/**
600	* Truncate a string to a maximum number of graphemes
601	*/
602	function truncateToGraphemes(str: string, maxGraphemes: number): string {
603	if (typeof Intl !== "undefined" && Intl.Segmenter) {
604	const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });
605	const segments = [...segmenter.segment(str)];
606	if (segments.length <= maxGraphemes) return str;
607	return `${segments
608	.slice(0, maxGraphemes - 3)
609	.map((s) => s.segment)
610	.join("")}...`;
611	}
612	// Fallback
613	const chars = [...str];
614	if (chars.length <= maxGraphemes) return str;
615	return `${chars.slice(0, maxGraphemes - 3).join("")}...`;
616	}
617
618	/**
619	* Create a Bluesky post with external link embed
620	*/
621	export async function createBlueskyPost(
622	agent: Agent,
623	options: CreateBlueskyPostOptions,
624	): Promise<StrongRef> {
625	const {
626	title,
627	description,
628	bskyPost,
629	canonicalUrl,
630	coverImage,
631	publishedAt,
632	} = options;
633
634	// Build post text: title + description
635	// Max 300 graphemes for Bluesky posts
636	const MAX_GRAPHEMES = 300;
637
638	let postText: string;
639
640	if (bskyPost) {
641	// Custom bsky post overrides any default behavior
642	postText = bskyPost;
643	} else if (description) {
644	// Try: title + description
645	const fullText = `${title}\n\n${description}`;
646	if (countGraphemes(fullText) <= MAX_GRAPHEMES) {
647	postText = fullText;
648	} else {
649	// Truncate description to fit
650	const availableForDesc =
651	MAX_GRAPHEMES - countGraphemes(title) - countGraphemes("\n\n");
652	if (availableForDesc > 10) {
653	const truncatedDesc = truncateToGraphemes(
654	description,
655	availableForDesc,
656	);
657	postText = `${title}\n\n${truncatedDesc}`;
658	} else {
659	// Just title
660	postText = `${title}`;
661	}
662	}
663	} else {
664	// Just title
665	postText = `${title}`;
666	}
667
668	// Final truncation in case title or bskyPost are longer than expected
669	if (countGraphemes(postText) > MAX_GRAPHEMES) {
670	postText = truncateToGraphemes(postText, MAX_GRAPHEMES);
671	}
672
673	// Build external embed
674	const embed: Record<string, unknown> = {
675	$type: "app.bsky.embed.external",
676	external: {
677	uri: canonicalUrl,
678	title: title.substring(0, 500), // Max 500 chars for title
679	description: (description \|\| "").substring(0, 1000), // Max 1000 chars for description
680	},
681	};
682
683	// Add thumbnail if coverImage is available
684	if (coverImage) {
685	(embed.external as Record<string, unknown>).thumb = coverImage;
686	}
687
688	// Create the post record
689	const record: Record<string, unknown> = {
690	$type: "app.bsky.feed.post",
691	text: postText,
692	embed,
693	createdAt: new Date(publishedAt).toISOString(),
694	};
695
696	const response = await agent.com.atproto.repo.createRecord({
697	repo: agent.did!,
698	collection: "app.bsky.feed.post",
699	record,
700	});
701
702	return {
703	uri: response.data.uri,
704	cid: response.data.cid,
705	};
706	}
707
708	/**
709	* Add bskyPostRef to an existing document record
710	*/
711	export async function addBskyPostRefToDocument(
712	agent: Agent,
713	documentAtUri: string,
714	bskyPostRef: StrongRef,
715	): Promise<void> {
716	const parsed = parseAtUri(documentAtUri);
717	if (!parsed) {
718	throw new Error(`Invalid document URI: ${documentAtUri}`);
719	}
720
721	// Fetch existing record
722	const existingRecord = await agent.com.atproto.repo.getRecord({
723	repo: parsed.did,
724	collection: parsed.collection,
725	rkey: parsed.rkey,
726	});
727
728	// Add bskyPostRef to the record
729	const updatedRecord = {
730	...(existingRecord.data.value as Record<string, unknown>),
731	bskyPostRef,
732	};
733
734	// Update the record
735	await agent.com.atproto.repo.putRecord({
736	repo: parsed.did,
737	collection: parsed.collection,
738	rkey: parsed.rkey,
739	record: updatedRecord,
740	});
741	}