define size of fetched image in endpoint
#How to define size of fetched image in endpoint?
keen nacelle
velvet zealotBOT
Hi @keen nacelle. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
In Astro, you can define the size of a fetched image in an endpoint by using the width and height properties. These properties define the dimensions to use for the image. When using local images in their original aspect ratio, the width and height can be automatically inferred from the source file and are optional. However, both of these properties are required for remote images.
Here is an example of how you can define the size of a fetched image in an endpoint:
import type { APIRoute } from "astro";
import { getConfiguredImageService, imageServiceConfig } from 'astro:assets';
export const get: APIRoute = async ({ request }) => {
const imageService = await getConfiguredImageService();
const imageTransform = imageService.parseURL(new URL(request.url), imageServiceConfig);
// ... fetch the image from imageTransform.src and store it in inputBuffer
const { data, format } = await imageService.transform(inputBuffer, imageTransform, imageServiceConfig);
return new Response(data, {
status: 200,
headers: {
'Content-Type': mime.getType(format) || ''
}
}
);
}
In this example, imageTransform is an object that includes the width and height properties. The transform method of the imageService is then used to resize the image according to these dimensions.
For more information, you can refer to the Astro documentation (https://docs.astro.build/en/reference/image-service-reference#getconfiguredimageservice--imageserviceconfig) and the Astro assets guide (https://docs.astro.build/en/guides/assets#width-and-height).
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
keen nacelle
@velvet zealot Can you provide me a functional example?
velvet zealotBOT
Let me check the knowledge base for you. One moment! :books:
Sure, here's a functional example of how you can define the size of a fetched image in an Astro endpoint:
import type { APIRoute } from "astro";
import { getConfiguredImageService, imageServiceConfig } from 'astro:assets';
import mime from 'mime';
export const get: APIRoute = async ({ request }) => {
const imageService = await getConfiguredImageService();
const imageTransform = imageService.parseURL(new URL(request.url), imageServiceConfig);
// ... fetch the image from imageTransform.src and store it in inputBuffer
// For example, let's fetch an image from a URL
const response = await fetch(imageTransform.src);
const inputBuffer = await response.arrayBuffer();
const { data, format } = await imageService.transform(inputBuffer, imageTransform, imageServiceConfig);
return new Response(data, {
status: 200,
headers: {
'Content-Type': mime.getType(format) || ''
}
});
}
In this example, we're using the fetch API to get the image from the URL specified in imageTransform.src. The image data is then stored in inputBuffer. The transform method of imageService is used to resize the image according to the dimensions specified in imageTransform, and the resized image is returned in the response.
Please note that this is a simplified example and you might need to adjust it according to your specific use case. For more information, you can refer to the Astro documentation (https://docs.astro.build/en/reference/image-service-reference#getconfiguredimageservice--imageserviceconfig).
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
keen nacelle
@velvet zealot What should I name that file?
velvet zealotBOT
Let me check the knowledge base for you. One moment! :books:
You should name the file with a .ts extension and place it in the /pages directory. The name of the file should include the extension of the data you want to create. For example, if you want to create a JSON endpoint, you could name the file data.json.ts. This will build a /data.json endpoint.
Here's an example:
src/pages/my_custom_endpoint_that_transforms_images.ts
This file will create a /my_custom_endpoint_that_transforms_images endpoint.