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/*
Fosscord: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Fosscord and Fosscord Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { Router, Response, Request } from "express";
import fetch from "node-fetch";
import ProxyAgent from "proxy-agent";
import { route } from "@fosscord/api";
import { Config } from "@fosscord/util";
import { HTTPError } from "lambert-server";
const router = Router();
// TODO: Move somewhere else
enum TENOR_GIF_TYPES {
gif,
mediumgif,
tinygif,
nanogif,
mp4,
loopedmp4,
tinymp4,
nanomp4,
webm,
tinywebm,
nanowebm,
}
type TENOR_MEDIA = {
preview: string;
url: string;
dims: number[];
size: number;
};
type TENOR_GIF = {
created: number;
hasaudio: boolean;
id: string;
media: { [type in keyof typeof TENOR_GIF_TYPES]: TENOR_MEDIA }[];
tags: string[];
title: string;
itemurl: string;
hascaption: boolean;
url: string;
};
type TENOR_CATEGORY = {
searchterm: string;
path: string;
image: string;
name: string;
};
type TENOR_CATEGORIES_RESULTS = {
tags: TENOR_CATEGORY[];
};
type TENOR_TRENDING_RESULTS = {
next: string;
results: TENOR_GIF[];
};
export function parseGifResult(result: TENOR_GIF) {
return {
id: result.id,
title: result.title,
url: result.itemurl,
src: result.media[0].mp4.url,
gif_src: result.media[0].gif.url,
width: result.media[0].mp4.dims[0],
height: result.media[0].mp4.dims[1],
preview: result.media[0].mp4.preview,
};
}
export function getGifApiKey() {
const { enabled, provider, apiKey } = Config.get().gif;
if (!enabled) throw new HTTPError(`Gifs are disabled`);
if (provider !== "tenor" || !apiKey)
throw new HTTPError(`${provider} gif provider not supported`);
return apiKey;
}
router.get("/", route({}), async (req: Request, res: Response) => {
// TODO: Custom providers
// TODO: return gifs as mp4
// const { media_format, locale } = req.query;
const { locale } = req.query;
const apiKey = getGifApiKey();
const agent = new ProxyAgent();
const [responseSource, trendGifSource] = await Promise.all([
fetch(
`https://g.tenor.com/v1/categories?locale=${locale}&key=${apiKey}`,
{
agent,
method: "get",
headers: { "Content-Type": "application/json" },
},
),
fetch(
`https://g.tenor.com/v1/trending?locale=${locale}&key=${apiKey}`,
{
agent,
method: "get",
headers: { "Content-Type": "application/json" },
},
),
]);
const { tags } = (await responseSource.json()) as TENOR_CATEGORIES_RESULTS;
const { results } = (await trendGifSource.json()) as TENOR_TRENDING_RESULTS;
res.json({
categories: tags.map((x) => ({
name: x.searchterm,
src: x.image,
})),
gifs: [parseGifResult(results[0])],
}).status(200);
});
export default router;
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