Also fixes the uploader uploading all images when trying to upload only a
single image in a multi-image work. Caused by `image_urls` incorrectly
returning all images when the source strategy was given a url for a
single image.
Introduce a Source::URL class for parsing URLs from source sites. Refactor the Twitter
source strategy to use it.
This is the first step towards factoring all the URL parsing logic out of source
strategies and moving it to subclasses of Source::URL. Each site will have a subclass
of Source::URL dedicated to parsing URLs from that site. Source strategies will use
these classes to extract information from URLs.
This is to simplify source strategies. Most sites have many different URL formats we have
to parse or rewrite, and handling all these different cases tends to make source
strategies very complex. Isolating the URL parsing logic from the site scraping logic
should make source strategies easier to maintain.
NicoSeiga changed it so that on every login, you must enter a 2FA code
sent by email. This broke the NicoSeiga strategy. The fix is to just use
a static session cookie instead (and hope it doesn't expire, and isn't
tied to an IP).
The `nico_seiga_login` and `nico_seiga_password` config settings have
been removed from config/danbooru_default_config.rb and replaced by
`nico_seiga_user_session`. If you run your own Danbooru instance, you
will have to update your config file manually.
Introduce a Danbooru::URL class for dealing with URLs. This is a wrapper
around Addressable::URI that adds some additional helper methods. Most
significantly, the `parse` method only allows valid http/https URLs, and
it returns nil instead of raising an exception when the URL is invalid.
Do one less API call when fetching the image URLs for a Pixiv post. The
`is_ugoira?` check in `image_urls` caused us to do an extra API call
when fetching the image URLs for a non-ugoira post.
API calls to Pixiv take around ~800ms, so this reduces minimum upload
time for Pixiv posts from ~1.6 seconds (two calls) to ~0.8 seconds.
Fix uploads for NicoSeiga sources not working because the strategy
returned URLs like the one below in the list of image_urls, which
require a login to download:
https://seiga.nicovideo.jp/image/source/10315315
Also fix certain URLs like https://dic.nicovideo.jp/oekaki/52833.png not
working, because they didn't contain an image ID and the image_urls
method returned an empty list in this case.
Fix the null source strategy setting the page URL. The page URL is
expected to be nil when we can't determine the page containing the image URL.
Fixes the upload_media_assets.page_url field being filled for uploads
from unknown sites.
Raise the timeout for downloading files from the source to 60 seconds globally.
Previously had a lower timeout because uploads were processed in the
foreground when not using the bookmarklet, and we didn't want to tie up
Puma worker processes with slow downloads. Now that all uploads are
processed in the background, we can have a higher timeout.
Rework the upload process so that files are saved to Danbooru first
before the user starts tagging the upload.
The main user-visible change is that you have to select the file first
before you can start tagging it. Saving the file first lets us fix a
number of problems:
* We can check for dupes before the user tags the upload.
* We can perform dupe checks and show preview images for users not using the bookmarklet.
* We can show preview images without having to proxy images through Danbooru.
* We can show previews of videos and ugoira files.
* We can reliably show the filesize and resolution of the image.
* We can let the user save files to upload later.
* We can get rid of a lot of spaghetti code related to preprocessing
uploads. This was the cause of most weird "md5 confirmation doesn't
match md5" errors.
(Not all of these are implemented yet.)
Internally, uploading is now a two-step process: first we create an upload
object, then we create a post from the upload. This is how it works:
* The user goes to /uploads/new and chooses a file or pastes an URL into
the file upload component.
* The file upload component calls `POST /uploads` to create an upload.
* `POST /uploads` immediately returns a new upload object in the `pending` state.
* Danbooru starts processing the upload in a background job (downloading,
resizing, and transferring the image to the image servers).
* The file upload component polls `/uploads/$id.json`, checking the
upload `status` until it returns `completed` or `error`.
* When the upload status is `completed`, the user is redirected to /uploads/$id.
* On the /uploads/$id page, the user can tag the upload and submit it.
* The upload form calls `POST /posts` to create a new post from the upload.
* The user is redirected to the new post.
This is the data model:
* An upload represents a set of files uploaded to Danbooru by a user.
Uploaded files don't have to belong to a post. An upload has an
uploader, a status (pending, processing, completed, or error), a
source (unless uploading from a file), and a list of media assets
(image or video files).
* There is a has-and-belongs-to-many relationship between uploads and
media assets. An upload can have many media assets, and a media asset
can belong to multiple uploads. Uploads are joined to media assets
through a upload_media_assets table.
An upload could potentially have multiple media assets if it's a Pixiv
or Twitter gallery. This is not yet implemented (at the moment all
uploads have one media asset).
A media asset can belong to multiple uploads if multiple people try
to upload the same file, or if the same user tries to upload the same
file more than once.
New features:
* On the upload page, you can press Ctrl+V to paste an URL and immediately upload it.
* You can save files for upload later. Your saved files are at /uploads.
Fixes:
* Improved error messages when uploading invalid files, bad URLs, and
when forgetting the rating.
* Make it so replacing a post doesn't generate a dummy upload as a side effect.
* Make it so you can't replace a post with itself (the post should be regenerated instead).
* Refactor uploads and replacements to save the ugoira frame data when
the MediaAsset is created, not when the post is created. This way it's
possible to view the ugoira before the post is created.
* Make `download_file!` in the Pixiv source strategy return a MediaFile
with the ugoira frame data already attached to it, instead of returning it
in the `data` field then passing it around separately in the `context`
field of the upload.
Add support for using a proxy for HTTP requests. Only used for external
requests, such as downloading files or talking to source sites such as
Pixiv or Twitter, not for internal requests, such as talking to IQDB or
Reportbooru.
