Properly handle AVIF files about haruneko

[Sheepux]

You could create a file format collection as a chapter sheep-scan for unit testing
https://github.com/manga-download/sample-websites/tree/main/sheep-scanlations

[ronny1982]

I see, so file extensions are not yet implemented...
Added a provisional patch in 41e76a1

[ronny1982]

Are you sure they were stored as jpeg and not as octet-stream?
May need to improve the jpeg detection to not falsely detect avif as jpeg

[MikeZeDev]

Idk what you mean by stored. Frontend preview show the type as octet-stream, but they are displayed accurately.

I said that when user ask to download then file are saved with .jpg extension, no matter what their content or mime type is.

May need to improve the jpeg detection to not falsely detect avif as jpeg

Afaik for now we force jpg extension on file names.

 private async StoreImageFolder ....

  const sc = this.Parent?.Parent['storageController'] as StorageController;
            const data = await sc.LoadTemporary<Blob>(resources.get(index));
            // TODO: determine file extension based on mime type
            const extension = '.jpg';
            const name = (index + 1).toString().padStart(digits, '0') + extension;
            const file = await directory.getFileHandle(name, { create: true });
            const stream = await file.createWritable();
            await stream.write(data);
            await stream.close();

My PR only make sure we got the good mime type. The actual "put the good extension on the file" is still to be done.

Moreover, there is this Common.ImageDirect (detect) flag to consider.

[MikeZeDev]

Added a test manga with avif file : Rabbit's Bizarre Adventures

[MikeZeDev]

I guess it can be closed for now