refs #8868
The `image-size` library supports now `.ico` files, which means there is no longer need to use the `icojs` library.
- removes unnecessary `icojs` dependency
- refactors `getIconDimensions` fn in blog icon util to fetch image sizes synchronus
- removes unnecessary `getIconDimensions` fn in blog icon validation, as there is no longer need to use different image size fn for different file extensions, and uses `getIconDimensions` from blog util fn instead.
- updates and adds more tests
refs #8221, closes#7688, refs #7558🙇 Improve meta data publisher logo behaviour
This is a follow-up PR for #8285.
Reasons: The code changes of #8285 caused error messages when falling back to the default `favicon.ico`, as the `image-size` tool doesn't support `ico` files.
This PR takes the logic to decide which logo needs to be listed in our schema into a new fn `blog_logo.js`. There we have now three decisions:
1. If we have a publication **logo**, we'll take that one
2. If we have no publication logo, but an **icon** we'll use this one.
3. If we have none of the above things, we fall back to our default `favicon.ico`
Additional, we're hard coding image dimensions for whenever the logo is an `.ico` file and built and extra decision to not call `image-size` when the dimension are already given.
I will create another follow-up PR, which checks the extension type for the file and offers it as a util.
🛠 Blog icon util
refs #7688
Serve functionality around the blog icon in its own util:
- getIconDimensions -> async function that takes the filepath of on ico file and returns its dimensions
- isIcoImageType -> returns true if file has `.ico` extension
- getIconType -> returns icon-type (`x-icon` or `png`)
- getIconUrl -> returns the absolut or relativ URL for the favicon: `[subdirectory or not]favicon.[ico or png]`
📖 Get .ico sizes for meta data & logo improvement
refs #7558
refs #8221
Use the new `blogIconUtil` in meta data to fetch the dimensions of `.ico` files.
Improvements for `publisher.logo`: We're now returning a hard-coded 'faked' image dimensions value to render an `imageObject` and prevent error our schema (Google structured data). As soon as an image (`.ico` or non-`.ico`) is too large, but - in case of non-`.ico` - a square format, be set the image-dimensions to 60px width and height. This reduces the chances of getting constantly error messages from Googles' webmaster tools.
- add getIconPath util
refs #7688
Adds an `uploads/icon/` endpoint to the api route to get a seperate entry point for blog icon validations. The blog icon validation will specifically check for images which have icon extensions (`.ico` & `.png`) and throw errors if:
- the icon file size is too big (>100kb)
- the icon is not a squaer
- the icon size is smaller than 32px
- the icon size is larger than 1000px
- the icon is not `.ico` or `.png` extension
TODOs for this PR:
- [X] get image dimensions
- [X] validate for image
- [X] size
- [X] form (must be square)
- [X] type
- [X] dimenstion (min 32px and max 1,000px)
- [X] return appropriate error messages
- [X] write tests
--------------------
TODOs for #7688:
- [X] Figure out, which favicon should be used (uploaded or default) -> #7713
- [ ] Serve and redirect the favicon for any browser requests, incl. redirects -> #7700 [WIP]
- [X] Upload favicon via `general/settings` and implement basic admin validations -> TryGhost/Ghost-Admin#397
- [X] Build server side validations -> this PR
