Upload transfer attachment

//native

type Codat = {

	encodedKey: string

}

type Base64 = string

/**

 * Upload transfer attachment

 * The *Upload transfer attachment* endpoint uploads an attachment and assigns it against a specific `transferId`.

[Transfers](https://docs.codat.io/accounting-api#/schemas/Transfer) are issued by a supplier for the purpose of recording transfer.

**Integration-specific behaviour**

For more details on supported file types by integration see [Attachments](https://docs.codat.io/accounting-api#/schemas/Attachment).

 */

export async function main(

	auth: Codat,

	companyId: string,

	connectionId: string,

	transferId: string,

	body: {

		file: {

			base64: Base64

			type:

				| 'image/png'

				| 'image/jpeg'

				| 'image/gif'

				| 'application/pdf'

				| 'appication/json'

				| 'text/csv'

				| 'text/plain'

				| 'audio/mpeg'

				| 'audio/wav'

				| 'video/mp4'

			name: string

		}

	}

) {

	const url = new URL(

		`https://api.codat.io/companies/${companyId}/connections/${connectionId}/push/transfers/${transferId}/attachment`

	)

	const formData = new FormData()

	for (const [k, v] of Object.entries(body)) {

		if (v !== undefined) {

			if (['file'].includes(k)) {

				const { base64, type, name } = v as {

					base64: Base64

					type: string

					name: string

				}

				formData.append(

					k,

					new Blob([Uint8Array.from(atob(base64), (m) => m.codePointAt(0)!)], {

						type

					}),

					name

				)

			} else {

				formData.append(k, String(v))

			}

		}

	}

	const response = await fetch(url, {

		method: 'POST',

		headers: {

			Authorization: `Basic ${auth.encodedKey}`

		},

		body: formData

	})

	if (!response.ok) {

		const text = await response.text()

		throw new Error(`${response.status} ${text}`)

	}

	return await response.text()

}