Chapters (from podcast 2.0 spec)

deno.lock

@@ -55,6 +55,16 @@
     "https://deno.land/std@0.152.0/async/pool.ts": "ef9eb97b388543acbf0ac32647121e4dbe629236899586c4d4311a8770fbb239",
     "https://deno.land/std@0.152.0/async/tee.ts": "bcfae0017ebb718cf4eef9e2420e8675d91cb1bcc0ed9b668681af6e6caad846",
     "https://deno.land/std@0.152.0/http/server.ts": "0b0a9f3abfcfecead944b31ee9098a0c11a59b0495bf873ee200eb80e7441483",
+    "https://deno.land/std@0.180.0/datetime/_common.ts": "f5c1cb784c616151a3d8198a4ab29f65b7fe5c20a105d8979bde9558c7b52910",
+    "https://deno.land/std@0.180.0/datetime/constants.ts": "0e91a7019814e6df5ebb710b09aceb79f52cbc618bb06b34431f4f8b89d79505",
+    "https://deno.land/std@0.180.0/datetime/day_of_year.ts": "f9b9c8f1958e843fa072510fbb36e455431a3cc74ab8f39757bd0a59f4aaad10",
+    "https://deno.land/std@0.180.0/datetime/difference.ts": "556a5edb807f36f0ca334f235180650ccf05dfeb94aa2573642ef20314ef101c",
+    "https://deno.land/std@0.180.0/datetime/format.ts": "416807ca1971c5432bfa7d1e429b7c6360cb81fee598e8510dde6e7b0e819a57",
+    "https://deno.land/std@0.180.0/datetime/is_leap.ts": "cc74a158e029ffe1dfcbdd911107a6de428ee64585b1071d8fd4e1a997670d30",
+    "https://deno.land/std@0.180.0/datetime/mod.ts": "858d0d695b3a391a9c5faa561e46813e346feaef65bd6ddadb7ee2e65ac4e5a8",
+    "https://deno.land/std@0.180.0/datetime/parse.ts": "b0af5e272382e516f34dddf9dd1eda31f1197bdf8ee2ff7d93505073e97bd76b",
+    "https://deno.land/std@0.180.0/datetime/to_imf.ts": "851d072a1c86c7ec34c753e61b1951ceda50c9da805b170a0ecaea3b024dd266",
+    "https://deno.land/std@0.180.0/datetime/week_of_year.ts": "00ce4203f1efc69e2c0902ff4a4451a49d8a87a561e941b692f3b5f056f1f441",
     "https://deno.land/x/code_block_writer@11.0.3/mod.ts": "2c3448060e47c9d08604c8f40dee34343f553f33edcdfebbf648442be33205e5",
     "https://deno.land/x/code_block_writer@11.0.3/utils/string_utils.ts": "60cb4ec8bd335bf241ef785ccec51e809d576ff8e8d29da43d2273b69ce2a6ff",
     "https://deno.land/x/denoflate@1.2.1/mod.ts": "f5628e44b80b3d80ed525afa2ba0f12408e3849db817d47a883b801f9ce69dd6",
@@ -110,6 +120,7 @@
     "https://deno.land/x/ts_morph@16.0.0/ts_morph.d.ts": "38668b0e3780282a56a805425494490b0045d1928bd040c47a94095749dab8c3",
     "https://deno.land/x/ts_morph@16.0.0/ts_morph.js": "9fc0f3d6a3997c2df023fabc4e529d2117d214ffd4fd04247ca2f56c4e9cd470",
     "https://esm.sh/*preact-render-to-string@5.2.4": "5c965103e5039039a89c5de1f551a690aecd3918afe53b5d967ce5d96d939584",
+    "https://esm.sh/iso8601-duration@2.1.1": "111246e7e1d01ec7d70bf0f84be58d00d09cb1b88c2136f98d05046aea8376a2",
     "https://esm.sh/preact@10.11.0": "e888b244446037c56f1881173fb51d1f5fa7aae5599e6c5154619346a6a5094e",
     "https://esm.sh/preact@10.11.0/hooks": "2b8ec155eb8b87501663f074acff1d55a9114fa7d88f0b39da06c940af1ff736",
     "https://esm.sh/preact@10.11.0/jsx-runtime": "5c123264f19799ab243211132dded45f6d42d594b5c78dd585f947d07bf20eae",
@@ -119,6 +130,8 @@
     "https://esm.sh/twind@0.16.17": "519a5a4d20ff4f797ddf747af70a5600b3581c50a6edf38a4d77e8d7b4caff74",
     "https://esm.sh/twind@0.16.17/sheets": "5a2b275c294ceffb1b09f2cc367b386172b6ccaa14273dbde473865d4d3f6721",
     "https://esm.sh/v111/csstype@3.1.1/index.d.ts": "1c29793071152b207c01ea1954e343be9a44d85234447b2b236acae9e709a383",
+    "https://esm.sh/v111/iso8601-duration@2.1.1/deno/iso8601-duration.js": "5acc3e5498178f378a2b9e724c6493bd92310f369056293dbc49cc90adb8e3b6",
+    "https://esm.sh/v111/iso8601-duration@2.1.1/lib/index.d.ts": "0765e891e321959e930ffd832d20e7937eb8b279e1fc9cf15b35b0db0c7b8541",
     "https://esm.sh/v111/preact-render-to-string@5.2.4/X-ZS8q/deno/preact-render-to-string.js": "7651121e4bb5ef2a48f840dba3f0c13087293ca2eb825aa23ffea3a87bd463b3",
     "https://esm.sh/v111/preact-render-to-string@5.2.4/X-ZS8q/src/index.d.ts": "b1d73703252c8570fdf2952475805f5808ba3511fefbd93a3e7bd8406de7dcd0",
     "https://esm.sh/v111/preact@10.11.0/hooks/src/index.d.ts": "5c29febb624fc25d71cb0e125848c9b711e233337a08f7eacfade38fd4c14cc3",
@@ -129,6 +142,7 @@
     "https://esm.sh/v111/twind@0.16.17/deno/sheets.js": "c504a460f5df2954f7334a821ef3ac9bedfc94dcc3f0dbf60af8d22f000391db",
     "https://esm.sh/v111/twind@0.16.17/deno/twind.js": "076dfc344b9507b3f5ee8a20d0b1e6eeb2ea3c6688649026ed0e13e4de158ff2",
     "https://esm.sh/v111/twind@0.16.17/sheets/sheets.d.ts": "103ecfb19311b86eb5f7a4899f6a3b1192a84cfb73b6ff9a8b84d78b053e6704",
-    "https://esm.sh/v111/twind@0.16.17/twind.d.ts": "35492f009a6d8695748d121d0b3b210b0819a663eafc77d68296d3110d6ec27f"
+    "https://esm.sh/v111/twind@0.16.17/twind.d.ts": "35492f009a6d8695748d121d0b3b210b0819a663eafc77d68296d3110d6ec27f",
+    "https://raw.githubusercontent.com/olaven/serialize-xml/v0.4.0/mod.ts": "0d8a42635bd6e0130b248d9bae27ab36a40076cfa7a9be0f743fa51d7f64eb9f"
   }
 }

fresh.gen.ts

@@ -4,13 +4,15 @@
 
 import config from "./deno.json" assert { type: "json" };
 import * as $0 from "./routes/api/feeds/[seriesId].ts";
-import * as $1 from "./routes/index.tsx";
+import * as $1 from "./routes/api/feeds/[seriesId]/[episodeId]/chapters.ts";
+import * as $2 from "./routes/index.tsx";
 import * as $$0 from "./islands/CopyButton.tsx";
 
 const manifest = {
   routes: {
     "./routes/api/feeds/[seriesId].ts": $0,
-    "./routes/index.tsx": $1,
+    "./routes/api/feeds/[seriesId]/[episodeId]/chapters.ts": $1,
+    "./routes/index.tsx": $2,
   },
   islands: {
     "./islands/CopyButton.tsx": $$0,

lib/nrk.ts

@@ -6,7 +6,7 @@ import { components as catalogComponents } from './nrk-catalog.ts';
 type ArrayElement<A> = A extends readonly (infer T)[] ? T : never
 export type Serie = catalogComponents["schemas"]["SeriesViewModel"]
 type OriginalEpisode = catalogComponents["schemas"]["EpisodeHalResource"];
-export type Episode = OriginalEpisode & { url: string; }
+export type OriginalEpisode = OriginalEpisode & { url: string; }
 export type SearchResultList = searchComponents["schemas"]["seriesResult"]["results"];
 export type SearchResult = ArrayElement<SearchResultList> & { description?: string }
 
@@ -25,7 +25,7 @@ interface Manifest {
     };
 }
 
-async function withDownloadLink(episode: OriginalEpisode): Promise<Episode> {
+async function withDownloadLink(episode: OriginalEpisode): Promise<OriginalEpisode> {
     // getting stream link
     const [playbackStatus, playbackResponse] = await get<Manifest>(`https://psapi.nrk.no/playback/manifest/podcast/${episode.episodeId}`)
 
@@ -67,5 +67,16 @@ export const nrkRadio = {
             throw `Error getting episodes for ${seriesId}: EpisodeStatus: ${episodeStatus}. SerieStatus: ${seriesStatus}`
         }
 
+    },
+    getEpisode: async (seriesId: string, episodeId: string): Promise<OriginalEpisode> => {
+
+
+        const url = `https://psapi.nrk.no/radio/catalog/podcast/${seriesId}/episodes/${episodeId}`
+        const [status, episode] = await get<OriginalEpisode>(url);
+        if (status !== OK) {
+            throw `Error getting episode ${episodeId}. Status: ${status}. Series: ${seriesId}`;
+        }
+
+        return episode;
     }
 }

routes/api/feeds/[seriesId].ts

@@ -2,8 +2,10 @@ import { nrkRadio, Episode } from "../../../lib/nrk.ts"
 import { HandlerContext } from "$fresh/server.ts";
 
 import { serialize, tag, declaration } from "https://raw.githubusercontent.com/olaven/serialize-xml/v0.4.0/mod.ts";
+import { getHostName } from "../../../utils.ts";
+
+function toItemTag(seriesId: string, episode: Episode) {
 
-function toItemTag(episode: Episode) {
     const description = episode.titles.subtitle || "";
     return tag("item", [
         tag("title", episode.titles.title),
@@ -13,6 +15,10 @@ function toItemTag(episode: Episode) {
         tag("guid", episode.id, [["isPermaLink", "false"]]),
         tag("pubDate", new Date(episode.date).toUTCString()),
         tag("itunes:duration", episode.durationInSeconds.toString()),
+        tag("podcast:chapters", "", [
+            ["url", `${getHostName()}/api/feeds/${seriesId}/${episode.episodeId}/chapters`],
+            ["type", "application/json+chapters"],
+        ]),
         tag("enclosure", "", [
             ["url", episode.url],
             ["length", episode.durationInSeconds.toString()],
@@ -66,13 +72,14 @@ async function buildFeed(seriesId: string) {
                             tag("link", linkValue),
                         ])
                     ] : []),
-                    ...serie.episodes.map(toItemTag),
+                    ...serie.episodes.map(episode => toItemTag(seriesId, episode)),
                 ]),
             ],
             [
                 ["version", "2.0"],
                 ["xmlns:itunes", "http://www.itunes.com/dtds/podcast-1.0.dtd"],
                 ["xmlns:content", "http://purl.org/rss/1.0/modules/content/"],
+                ["xmlns:podcast", "https://podcastindex.org/namespace/1.0"],
             ]
         )
     );
@@ -84,7 +91,7 @@ export const handler = async (req: Request, _ctx: HandlerContext): Promise<Respo
 
     return new Response(feedContent, {
         headers: {
-            "Content-Type": "application/rss+xml"
+            "Content-Type": "application/xml"
         }
     });
 };

routes/api/feeds/[seriesId]/[episodeId]/chapters.ts

@@ -0,0 +1,23 @@
+import { parse, toSeconds } from "https://esm.sh/iso8601-duration@2.1.1";
+import { nrkRadio, OriginalEpisode } from "../../../../../lib/nrk.ts";
+
+function toChapters(episode: OriginalEpisode) {
+    return episode.indexPoints.map(indexPoint => ({
+        title: indexPoint.title,
+        startTime: toSeconds(parse(indexPoint.startPoint))
+    }))
+}
+export const handler = async (req: Request, _ctx: HandlerContext): Promise<Response> => {
+    const seriesId = _ctx.params.seriesId;
+    const episodeId = _ctx.params.episodeId;
+
+    console.log("going to get ep for ", episodeId);
+    const episode = await nrkRadio.getEpisode(seriesId, episodeId);
+    const chapters = toChapters(episode);
+
+    return new Response(JSON.stringify(chapters), {
+        headers: {
+            "Content-Type": "application/json+chapters"
+        }
+    });
+};

utils.ts

@@ -0,0 +1,11 @@
+export function getHostName() {
+    const deploymentId = Deno.env.get("DENO_DEPLOYMENT_ID");
+    if (deploymentId) {
+        return `https://nrss-${deploymentId}.deno.dev`;
+    } else {
+        // assume env
+        return 'http://localhost:8000';
+    }
+}
+
+