Azure SAS Responses

Client uploads can use any endpoint that returns upup's presign contract.

type PresignedUrlResponse = {
    key: string
    uploadUrl: string
    uploadHeaders?: Record<string, string>
    publicUrl?: string
    downloadUrl?: string
    expiresIn: number
}

Return headers that the browser must send with the signed request:

return Response.json({
    key,
    uploadUrl: sasUrl,
    uploadHeaders: {
        'x-ms-blob-type': 'BlockBlob',
        'Content-Type': body.type || 'application/octet-stream',
    },
    expiresIn: 3600,
})