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Commit d90ee51d authored by Benedikt Hermann's avatar Benedikt Hermann
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added episode list

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.gitignore
+ 2
− 0
View file @ d90ee51d
/node_modules /node_modules
package-lock.json
.env
src/mappings.ts 0 → 100644
+ 69
− 0
View file @ d90ee51d
import { ActivityPubNote, ActivityPubOutbox, EpisodeResponse } from "./types";
export function transformEpisode(response: EpisodeResponse) {
const item = response.item;
return {
"@context": "https://www.w3.org/ns/activitystreams",
"id": item.assetId,
"type": "PodcastEpisode",
"published": item.published,
"updated": item.updated,
"attributedTo": item.show.coreId,
"externalId": item.url,
"title": item.title,
"description": {
"type": "Note",
"mediaType": "text/markdown",
"content": item.description
},
"image": item.imagesList.length > 0 ? {
"type": "Image",
"url": item.imagesList[0].url
} : undefined,
"audio": item.audioList.map(audio => ({
"type": "Audio",
"name": audio.title,
"mediaType": "audio/mpeg",
"url": audio.href
})),
"partOf": {
"type": "PodcastSeries",
"id": item.show.coreId,
"externalId": item.show.externalId,
"name": item.show.title,
"attributedTo": item.show.publisher.coreId,
"publisher": {
"type": "BroadcastService",
"name": item.show.publisher.title,
"url": item.show.publisher.url,
"organization": {
"type": "Organization",
"name": item.show.publisher.organization.name,
"url": item.show.publisher.organization.url
}
}
}
};
}
export function transformEpisodeList(input: any): ActivityPubOutbox {
const baseUrl = "https://example.com/outbox";
const actorUrl = "https://example.com/actor";
const orderedItems: ActivityPubNote[] = input.show.items.nodes.map((item: any) => ({
id: item.assetId,
type: "Note",
actor: actorUrl,
published: new Date().toISOString(),
to: ["https://www.w3.org/ns/activitystreams#Public"],
content: item.title,
url: item.url,
}));
return {
"@context": "https://www.w3.org/ns/activitystreams",
id: baseUrl,
type: "OrderedCollection",
orderedItems,
};
}
\ No newline at end of file
src/server.ts
+ 142
− 129
View file @ d90ee51d
import express from 'express'; import express from 'express';
import { Client, cacheExchange, fetchExchange, gql } from '@urql/core'; import { Client, cacheExchange, fetchExchange, gql } from '@urql/core';
import { Response } from './types'; import { EpisodeResponse } from './types';
import { transformEpisode, transformEpisodeList } from './mappings';
const app = express(); const app = express();
const PORT = 3000; const PORT = 3000;
const audiothekApi = new Client({ const audiothekApi = new Client({
url: 'https://api.ardaudiothek.de/graphql', url: 'https://api.ardaudiothek.de/graphql',
exchanges: [cacheExchange, fetchExchange], exchanges: [cacheExchange, fetchExchange],
}); });
const query = gql` const query = gql`
query Item { query Item {
item(id: "14278953") { item(id: "14278953") {
show { show {
coreId coreId
externalId externalId
title title
url url
publisher: publicationService { publisher: publicationService {
coreId coreId
dvbServiceId dvbServiceId
title title
url url
organizationName organizationName
organization { organization {
name name
url url
} }
} }
coreDocument coreDocument
} }
assetId assetId
url: sharingUrl url: sharingUrl
title title
description description
published: publishDate published: publishDate
updated: core(key: "modified") updated: core(key: "modified")
imagesList { imagesList {
url url
title title
} }
coreDocument coreDocument
audioList { audioList {
title title
audioCodec audioCodec
href href
} }
} }
} }
`; `;
async function fetchData(query: any, variables: any) { async function fetchData<R>(query: any, variables: any) {
const result = await audiothekApi.query<Response>(query, variables).toPromise(); const result = await audiothekApi.query<R>(query, variables).toPromise();
if (result.error) { if (result.error) {
throw result.error; throw result.error;
} }
// console.log(JSON.stringify(result.data, null, 2)); // console.log(JSON.stringify(result.data, null, 2));
return result.data; return result.data;
} }
function transformEpisodeToActivityPub(response: Response) {
const item = response.item;
return {
"@context": "https://www.w3.org/ns/activitystreams",
"id": item.assetId,
"type": "PodcastEpisode",
"published": item.published,
"updated": item.updated,
"attributedTo": item.show.coreId,
"externalId": item.url,
"title": item.title,
"description": {
"type": "Note",
"mediaType": "text/markdown",
"content": item.description
},
"image": item.imagesList.length > 0 ? {
"type": "Image",
"url": item.imagesList[0].url
} : undefined,
"audio": item.audioList.map(audio => ({
"type": "Audio",
"name": audio.title,
"mediaType": "audio/mpeg",
"url": audio.href
})),
"partOf": {
"type": "PodcastSeries",
"id": item.show.coreId,
"externalId": item.show.externalId,
"name": item.show.title,
"attributedTo": item.show.publisher.coreId,
"publisher": {
"type": "BroadcastService",
"name": item.show.publisher.title,
"url": item.show.publisher.url,
"organization": {
"type": "Organization",
"name": item.show.publisher.organization.name,
"url": item.show.publisher.organization.url
}
}
}
};
}
async function main() { async function main() {
const response = await fetchData(query, { id: '14278953' }); const response = await fetchData(query, { id: '14278953' });
if (response) { if (response) {
const activityPubEpisode = transformEpisodeToActivityPub(response); const activityPubEpisode = transformEpisode(response);
console.log(JSON.stringify(activityPubEpisode, null, 2)); console.log(JSON.stringify(activityPubEpisode, null, 2));
} }
} }
// main(); // main();
...@@ -122,43 +79,99 @@ async function main() { ...@@ -122,43 +79,99 @@ async function main() {
app.get('/:actor/episodes/:id', async (req, res) => { app.get('/:actor/episodes/:id', async (req, res) => {
try { try {
const data = await fetchData(query, { id: req.params.id }); const data = await fetchData<EpisodeResponse>(query, { id: req.params.id });
if (!data) { if (!data) {
res.status(404).json({ error: 'Episode not found' }); res.status(404).json({ error: 'Episode not found' });
return; return;
} }
// TODO: verifiy that the actor is the same as the attributedTo field
// TODO: verifiy that the actor is the same as the attributedTo field const activityPubDocument = transformEpisode(data);
res.json(activityPubDocument);
} catch (error) {
res.status(500).json({ error: 'Failed to fetch episode data' });
}
});
const activityPubDocument = transformEpisodeToActivityPub(data); app.get('/:actor/episodes', async (req, res) => {
res.json(activityPubDocument); const query = gql`
} catch (error) { query ShowWithEpisodes($showId: ID!, $first: Int = 10, $offset: Int) {
res.status(500).json({ error: 'Failed to fetch episode data' }); show(id: $showId) {
} coreId
externalId
title
url
items(first: $first, orderBy: PUBLISH_DATE_DESC, offset: $offset, condition: {
isPublished: true
}) {
nodes {
assetId
title
url: sharingUrl
}
}
publisher: publicationService {
coreId
dvbServiceId
title
url
organizationName
organization {
name
url
}
}
}
}
`;
try {
// TODO: verifiy that the actor is the same as the attributedTo field
const data = await fetchData<any>(query, { showId: "urn:ard:show:a42d1ea0b4a07053" });
if (!data) {
res.status(404).json({ error: 'Episode not found' });
return;
}
const activityPubDocument = transformEpisodeList(data);
res.json(activityPubDocument);
} catch (error) {
res.status(500).json({ error: 'Failed to fetch episode data' });
}
}); });
app.get('/@blaue-couch', async (req, res) => { app.get('/@blaue-couch', async (req, res) => {
res.json({ res.json({
"@context": "https://www.w3.org/ns/activitystreams", "@context": "https://www.w3.org/ns/activitystreams",
"id": "urn:ard:show:a42d1ea0b4a07053", "id": "urn:ard:show:a42d1ea0b4a07053",
"type": "Service", "type": "Service",
"name": "Blaue Couch", "name": "Blaue Couch",
"externalId": "https://feeds.br.de/blaue-couch/feed.xml", "externalId": "https://feeds.br.de/blaue-couch/feed.xml",
"attributedTo": "urn:ard:publisher:c4a9cee041835529", "attributedTo": "urn:ard:publisher:c4a9cee041835529",
"publisher": { "publisher": {
"type": "BroadcastService", "type": "BroadcastService",
"name": "BAYERN 1", "name": "BAYERN 1",
"url": "https://www.ardaudiothek.de/radio/br/bayern-1/", "url": "https://www.ardaudiothek.de/radio/br/bayern-1/",
"organization": { "organization": {
"type": "Organization", "type": "Organization",
"name": "BR", "name": "BR",
"url": "https://www.ardaudiothek.de/radio/br/" "url": "https://www.ardaudiothek.de/radio/br/"
} }
} }
}); });
}); });
app.get('/', (req, res) => res.redirect('/@blaue-couch'));
app.listen(PORT, () => { app.listen(PORT, () => {
console.log(`Server running at http://localhost:${PORT}`); console.log(`Server running at http://localhost:${PORT}`);
}); });
src/types.ts
+ 18
− 1
View file @ d90ee51d
...@@ -30,6 +30,23 @@ export type Item = { ...@@ -30,6 +30,23 @@ export type Item = {
show: Show; show: Show;
}; };
export type Response = { export type EpisodeResponse = {
item: Item; item: Item;
};
export type ActivityPubOutbox = {
"@context": string;
id: string;
type: string;
orderedItems: ActivityPubNote[];
};
export type ActivityPubNote = {
id: string;
type: string;
actor: string;
published: string;
to: string[];
content: string;
url: string;
}; };
\ No newline at end of file
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