31 lines
1.1 KiB
TypeScript
31 lines
1.1 KiB
TypeScript
import type { RequestHandler } from '@sveltejs/kit'
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// This endpoint exists to act as a proxy for images, bypassing any CORS or other issues
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// that could arise from using images from another origin
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export const GET: RequestHandler = async ({ url }) => {
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const imageUrl = url.searchParams.get('url')
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if (!imageUrl || !URL.canParse(imageUrl)) return new Response('Missing or invalid url parameter', { status: 400 })
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const fetchImage = async (): Promise<Response> => {
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const MAX_TRIES = 3
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let tries = 0
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while (tries < MAX_TRIES) {
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++tries
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const response = await fetch(imageUrl).catch((reason) => {
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console.error(`Image fetch to ${imageUrl} failed: ${reason}`)
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return null
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})
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if (!response || !response.ok) continue
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const contentType = response.headers.get('content-type')
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if (!contentType || !contentType.startsWith('image')) throw new Error(`Url ${imageUrl} does not link to an image`)
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return response
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}
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throw new Error('Exceed Max Retires')
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}
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return await fetchImage()
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}
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