From 124507d074d5607da3887554230894b3c98b7d82 Mon Sep 17 00:00:00 2001
From: yourfriendoss <sofija@duck.com>
Date: Mon, 15 Dec 2025 22:46:49 +0200
Subject: [PATCH] give out .json and .csv, not only .ndjson

---
 index.ts | 14 +++++++++++++-
 lib.ts   | 14 ++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/index.ts b/index.ts
index 641e13e..06d246b 100644
--- a/index.ts
+++ b/index.ts
@@ -1,5 +1,5 @@
 import { parseHTML } from "linkedom"
-import { ndjsonToJson, prettyStringify, requireBasicAuth, tripleBool, type Change, type Entry } from "./lib";
+import { jsonToCsv, ndjsonToJson, prettyStringify, requireBasicAuth, tripleBool, type Change, type Entry } from "./lib";
 import * as fs from "fs/promises"
 import { existsSync } from "fs";
 import { $ } from "bun"
@@ -193,6 +193,18 @@ export class ClientResponse extends Response {
 Bun.serve({
   routes: {
     "/": () => new ClientResponse("Sheets v2"),
+    "/artists.json": async () => ClientResponse.json(
+      ndjsonToJson((await fs.readFile("artists.ndjson")).toString("utf8"))
+    ),
+    "/artists.csv": async () => new ClientResponse(
+        jsonToCsv(
+          ndjsonToJson((await fs.readFile("artists.ndjson")).toString("utf8")
+        )
+      ), {
+      headers: {
+        "Content-Type": "text/csv"
+      }
+    }),
     "/artists.ndjson": async () => new ClientResponse(await fs.readFile("artists.ndjson")),
     "/th_artists.ndjson": async () => new ClientResponse(await fs.readFile("th_artists.ndjson")),
     "/ignore-th/:id": async (req) => {
diff --git a/lib.ts b/lib.ts
index 066af3e..b4380ee 100644
--- a/lib.ts
+++ b/lib.ts
@@ -17,6 +17,20 @@ export const thIgnore = [
 	"bpmkeytracker",
 ]
 
+export function jsonToCsv(data: unknown|unknown[]) {
+  const arr = Array.isArray(data) ? data : [data];
+  const headers = [...new Set(arr.flatMap(o => Object.keys(o)))];
+
+  const escape = (v: string )=>
+    `"${String(v ?? "").replace(/"/g, '""')}"`;
+
+  const rows = arr.map(o =>
+    headers.map(h => escape(o[h])).join(",")
+  );
+
+  return [headers.join(","), ...rows].join("\n");
+}
+
 export enum TripleBool {
   MOSTLY = 2,
   YES = 1,