web-services/youtube: Add converting takeout playlist to invidious

docs/web-services.md

@@ -40,3 +40,14 @@
 
     :::js
     console.log(JSON.stringify(Array.from(document.querySelectorAll('#js-achievements table tbody tr')).map(row => { const cols = row.querySelectorAll('td'); return { name: cols[0].innerText, description: cols[1].querySelector('p.i').innerText, displayName: cols[1].childNodes[0].textContent.replace(/\n/g, ''), hidden: "0", icon: "achievements/" + cols[0].innerText + ".jpg", icongray: "achievements/" + cols[0].innerText + "_gray.jpg" } })))
+
+## YouTube
+
+### Convert takeout playlists to Invidious format
+
+Incredibly ugly, but it works™.
+
+If you want the import to succeed remove the liked video playlist before importing.
+
+    :::shell
+    (echo '{"playlists":['; (for i in *.csv; do echo '{"title": "'"${i%%.csv}"'", "description": "", "privacy": "private", "videos": ["'"$(tail -n +5 "$i" | head -n -1 | cut -d',' -f1| perl -p -e 's/\n/","/' | head -c -3)"'"]},'; done)|head -c -2; echo ']}') > playlists.json