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silverbullet/plugs/ghost/ghost.ts

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import { readPage, writePage } from "plugos-silverbullet-syscall/space";
import { json } from "plugos-syscall/fetch";
import YAML from "yaml";
import { invokeFunction } from "plugos-silverbullet-syscall/system";
import { getCurrentPage, getText } from "plugos-silverbullet-syscall/editor";
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import { cleanMarkdown } from "../markdown/markdown";
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type Post = {
id: string;
uuid: string;
title: string;
slug: string;
mobiledoc: string;
status: "draft" | "published";
visibility: string;
created_at: string;
upblished_at: string;
updated_at: string;
tags: Tag[];
primary_tag: Tag;
url: string;
excerpt: string;
};
type Tag = {
id: string;
name: string;
slug: string;
description: string | null;
};
type MobileDoc = {
version: string;
atoms: any[];
cards: Card[];
};
type Card = any[];
function mobileDocToMarkdown(doc: string): string | null {
let mobileDoc = JSON.parse(doc) as MobileDoc;
if (mobileDoc.cards.length > 0 && mobileDoc.cards[0][0] === "markdown") {
return mobileDoc.cards[0][1].markdown;
}
return null;
}
function markdownToMobileDoc(text: string): string {
return JSON.stringify({
version: "0.3.1",
atoms: [],
cards: [["markdown", { markdown: text }]],
markups: [],
sections: [
[10, 0],
[1, "p", []],
],
});
}
class GhostAdmin {
private token?: string;
constructor(private url: string, private key: string) {}
async init() {
const [id, secret] = this.key.split(":");
this.token = await self.syscall(
"jwt.jwt",
secret,
id,
"HS256",
"5m",
"/v3/admin/"
);
}
async listPosts(): Promise<Post[]> {
let result = await json(
`${this.url}/ghost/api/v3/admin/posts?order=published_at+DESC`,
{
headers: {
Authorization: `Ghost ${this.token}`,
},
}
);
return result.posts;
}
async listMarkdownPosts(): Promise<Post[]> {
let markdownPosts: Post[] = [];
for (let post of await this.listPosts()) {
let mobileDoc = JSON.parse(post.mobiledoc) as MobileDoc;
if (mobileDoc.cards.length > 0 && mobileDoc.cards[0][0] === "markdown") {
markdownPosts.push(post);
}
}
return markdownPosts;
}
async createPost(post: Partial<Post>): Promise<Post> {
let result = await json(`${this.url}/ghost/api/v3/admin/posts`, {
method: "POST",
headers: {
Authorization: `Ghost ${this.token}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
posts: [post],
}),
});
return result.posts[0];
}
async updatePost(post: Partial<Post>): Promise<any> {
let oldPost = await json(
`${this.url}/ghost/api/v3/admin/posts/${post.id}`,
{
headers: {
Authorization: `Ghost ${this.token}`,
"Content-Type": "application/json",
},
}
);
post.updated_at = oldPost.posts[0].updated_at;
let result = await json(`${this.url}/ghost/api/v3/admin/posts/${post.id}`, {
method: "PUT",
headers: {
Authorization: `Ghost ${this.token}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
posts: [post],
}),
});
return result.posts[0];
}
}
type GhostConfig = {
url: string;
adminKey: string;
pagePrefix: string;
};
function postToMarkdown(post: Post): string {
let text = mobileDocToMarkdown(post.mobiledoc);
return `<!-- #ghost-id: ${post.id} -->\n# ${post.title}\n${text}`;
}
const publishedPostRegex =
/<!-- #ghost-id:\s*(\w+)\s*-->\n#\s*([^\n]+)\n([^$]+)$/;
const newPostRegex = /#\s*([^\n]+)\n([^$]+)$/;
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async function markdownToPost(text: string): Promise<Partial<Post>> {
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let match = publishedPostRegex.exec(text);
if (match) {
let [, id, title, content] = match;
return {
id,
title,
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mobiledoc: markdownToMobileDoc(await cleanMarkdown(content)),
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};
}
match = newPostRegex.exec(text);
if (match) {
let [, title, content] = match;
return {
title,
status: "draft",
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mobiledoc: markdownToMobileDoc(await cleanMarkdown(content)),
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};
}
throw Error("Not a valid ghost post");
}
async function getConfig(): Promise<GhostConfig> {
let configPage = await readPage("ghost-config");
return YAML.parse(configPage.text) as GhostConfig;
}
export async function downloadAllPostsCommand() {
await invokeFunction("server", "downloadAllPosts");
}
export async function downloadAllPosts() {
let config = await getConfig();
let admin = new GhostAdmin(config.url, config.adminKey);
await admin.init();
let allPosts = await admin.listMarkdownPosts();
for (let post of allPosts) {
let text = mobileDocToMarkdown(post.mobiledoc);
text = `<!-- #ghost-id: ${post.id} -->\n# ${post.title}\n${text}`;
await writePage(`${config.pagePrefix}${post.slug}`, text);
}
}
export async function publishPostCommand() {
await invokeFunction(
"server",
"publishPost",
await getCurrentPage(),
await getText()
);
}
export async function publishPost(name: string, text: string) {
let config = await getConfig();
let admin = new GhostAdmin(config.url, config.adminKey);
await admin.init();
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let post = await markdownToPost(text);
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post.slug = name.substring(config.pagePrefix.length);
if (post.id) {
await admin.updatePost(post);
} else {
let newPost = await admin.createPost(post);
text = `<!-- #ghost-id: ${newPost.id} -->\n${text}`;
await writePage(name, text);
}
}