123 lines
3.6 KiB
TypeScript
123 lines
3.6 KiB
TypeScript
const MASTODON_INSTANCE_URL = Deno.env.get("MASTODON_INSTANCE_URL"); // e.g. https://botsin.space
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const MASTODON_ACCESS_TOKEN = Deno.env.get("MASTODON_ACCESS_TOKEN"); // you can get this at $INSTANCE_URL/settings/applications
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if (
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MASTODON_INSTANCE_URL == null || MASTODON_INSTANCE_URL === "" ||
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MASTODON_ACCESS_TOKEN == null || MASTODON_ACCESS_TOKEN === ""
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) {
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console.error("Please set MASTODON_INSTANE_URL and MASTODON_ACCESS_TOKEN!");
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Deno.exit(1);
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}
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// some helpers to work with the mastodon api
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const handleResponse = async (res: Response) => {
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if (res.ok) return { response: res, data: await res.json() };
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throw new Error(await res.text());
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};
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const api = (
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path: string,
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params: { body?: FormData | string; method?: string },
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) =>
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fetch(
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`${MASTODON_INSTANCE_URL.replace(/\/+$/, "")}/${path.replace(/^\/+/, "")}`,
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{
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method: "POST",
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headers: {
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Authorization: `Bearer ${MASTODON_ACCESS_TOKEN}`,
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},
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...params,
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},
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).then(handleResponse);
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// first we need to find out which files we can post, and which ones we already
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// have posted
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console.log("Picking file to post…");
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const alreadyPostedFiles = new Set();
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for await (const dirEntry of Deno.readDir("./posts/.posted")) {
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if (dirEntry.isSymlink) {
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alreadyPostedFiles.add(dirEntry.name);
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}
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}
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const availableFiles = [];
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for await (const dirEntry of Deno.readDir("./posts/")) {
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if (dirEntry.name === ".gitignore") continue;
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if (dirEntry.isFile && !alreadyPostedFiles.has(dirEntry.name)) {
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availableFiles.push(dirEntry.name);
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}
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}
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console.log(`Found ${availableFiles.length} files which are not yet posted`);
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if (availableFiles.length === 0) {
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console.log("Nothing left to post at the moment. Bye!");
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Deno.exit();
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}
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const fileToPost =
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availableFiles[Math.floor(Math.random() * availableFiles.length)];
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const bytes = await Deno.readFile(`./posts/${fileToPost}`);
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console.log(`Will post file ${fileToPost}`);
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// we need two requests
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// 1. upload media
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// 2. create status with media id
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// see https://docs.joinmastodon.org/methods/media/#v2
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const mediaData = new FormData();
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mediaData.append("file", new Blob([bytes]));
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console.log("Sending post request to", `${MASTODON_INSTANCE_URL}/api/v2/media`);
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const { data: mediaRequest } = await api("/api/v2/media", {
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body: mediaData,
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}) as unknown as { data: { id: string } };
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console.log("mediaRequest", mediaRequest);
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// now we have to wait until the media file is processed
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const sleep = (milliseconds: number) =>
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new Promise((resolve, reject) => {
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setTimeout(resolve, milliseconds);
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});
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const startTime = Date.now();
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while (true) {
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if ((Date.now() - startTime) / 1000 >= 60) {
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console.error("Timeout waiting for media to be processed.");
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Deno.exit(1);
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}
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const { response } = await api(`/api/v1/media/${mediaRequest.id}`, {
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method: "GET",
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});
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if (response.status === 200) {
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console.log("Media finished processing!");
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break;
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} else {
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console.log("Media still processing…");
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await sleep(5000);
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}
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}
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// see https://docs.joinmastodon.org/methods/statuses/#create
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const statusData = new FormData();
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statusData.append("media_ids[]", mediaRequest.id);
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console.log(
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"Sending post request to",
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`${MASTODON_INSTANCE_URL}/api/v1/statuses`,
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);
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const { data: statusRequest } = await api("/api/v1/statuses", {
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body: statusData,
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});
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console.log("statusRequest", statusRequest);
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console.log("Linking posted file so we can skip it in the future…");
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// FIXME: This requires unrestricted `--allow-read` and `--allow-write` at the;
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// deno should provide a finer-grained permission prompt here
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await Deno.symlink(`../${fileToPost}`, `./posts/.posted/${fileToPost}`);
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console.log("Done!");
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