Create a meta-catalog of interesting OPDS feeds / design the new modal "add an opds feed"

[llemeurfr]

In the context of the addition of an OPDS feed to the application, we could create a catalog of OPDS feeds, which would be available when users are online (logical when accessing OPDS feeds).
The meta-catalog would have sections (could be per language).

[danielweck]

Related issue: #274
(duplicate?)

[llemeurfr]

Not a duplicate, more a complementary feature.

Such a meta-catalog would be burnt inside the application (e.g. for Thorium, a loooong list maintained by EDRLab), as a discovery mechanism for user.

#274 issue is about adding some feeds at setup time (e.g. in a school) -> as "forced" feeds.

[panaC]

1. design the new modal "add opds feed"
2. add an opds list feed with an api request on serverless service
3. create a serverless script to return an opds2 feed list

• https://www.cloudflare.com/fr-fr/products/cloudflare-workers/
• https://cloud.google.com/functions/

In pending : the design layout/React component of new "add opds feed" modal

[danielweck]

Reminder of (badly-curated) list of OPDS feeds:
https://github.com/readium/r2-streamer-js/blob/develop/docs/opds.md#a-selection-of-public-opds-feeds
(some of them are good for testing, not so much for promoting)

[llemeurfr]

Some remarks for discussion:
1- this belongs more to the app level (Thorium Reader) than to the toolkit level (Readium Desktop)
2- It is difficult to get an universal registry of OPDS catalogs, as it would be culture and language oriented, or a real bazaar.
3- We could select feeds corresponding to free ebooks only, but this would be a limited offer. We could get feeds from public libraries, but the authentication schemes of different libraries is far from being standardized. We could offer feeds with buyable goods, but the UX of much bookstores is still "highly perfectible" when it come to buying ebooks via OPDS feeds.

[danielweck]

Yes indeed. Note however than some OPDS feeds (well, their server) take into account the HTTP header accept-language to serve locale-sensitive content.

[danielweck]

Related issue: #1336

[llemeurfr]

I agree to close this issue in favor of #1336.