Return a file when outputType is file

[d98762625]

outputType is an optional parameter that can be specified when POSTing to /bake. When outputType is set as "file" or 7, the application should return a file.

Describe the solution you'd like

• if outputType=file in the request, the application should:

  • set Content-Disposition to attachment in the response
  • only return the dish value as the payload, so that if you pipe the response to a file, it should only contain the value.

• this behaviour should apply to multipart and body POSTs

For reference (with multipart at least), the response when outputType=7 is:

type: "FILE",
value: {
    data: {
        data: [
        84,
        104,
        101,
        32,
        99
        ],
        type: "Buffer"
    },
    lastModified: 1593784118511,
    name: "unknown",
    type: "application/unknown",
}

---

test for outputType = file is:

• expect a file of binary data out (e.g. png). Write it to x.png and open it. it should be valid.