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import { EnvelopeWithBatchId, FileHeaders } from '../types'
import { BeeError } from './error'
import { convertEnvelopeToMarshaledStamp } from './stamps'
import { BatchId, PublicKey, Reference } from './typed-bytes'
export function readFileHeaders(headers: Record<string, string>): FileHeaders {
const name = readContentDispositionFilename(headers['content-disposition'])
const tagUid = readTagUid(headers['swarm-tag-uid'])
const contentType = headers['content-type'] || undefined
return {
name,
tagUid,
contentType,
}
}
function readContentDispositionFilename(header: string | null): string {
Iif (!header) {
throw new BeeError('missing content-disposition header')
}
// Regex was found here
// https://stackoverflow.com/questions/23054475/javascript-regex-for-extracting-filename-from-content-disposition-header
const dispositionMatch = header.match(/filename\*?=['"]?(?:UTF-\d['"]*)?([^;\r\n"']*)['"]?;?/i)
if (dispositionMatch && dispositionMatch.length > 0) {
return dispositionMatch[1]
}
throw new BeeError('invalid content-disposition header')
}
function readTagUid(header: string | null): number | undefined {
if (!header) {
return undefined
}
return parseInt(header, 10)
}
export function prepareRequestHeaders(
stamp: BatchId | Uint8Array | string | EnvelopeWithBatchId | null,
nullableOptions?: unknown,
): Record<string, string> {
const headers: Record<string, string> = {}
if (isEnvelopeWithBatchId(stamp)) {
headers['swarm-postage-stamp'] = convertEnvelopeToMarshaledStamp(stamp).toHex()
} else if (stamp) {
stamp = new BatchId(stamp)
headers['swarm-postage-batch-id'] = stamp.toHex()
}
if (!nullableOptions) {
return headers
}
const options = Types.asObject(nullableOptions)
Iif (options.size) {
headers['content-length'] = String(options.size)
}
if (options.contentType) {
headers['content-type'] = String(options.contentType)
}
if (options.redundancyLevel) {
headers['swarm-redundancy-level'] = String(options.redundancyLevel)
}
if (Types.isBoolean(options.act)) {
headers['swarm-act'] = String(options.act)
}
if (Types.isBoolean(options.pin)) {
headers['swarm-pin'] = String(options.pin)
}
if (Types.isBoolean(options.encrypt)) {
headers['swarm-encrypt'] = options.encrypt.toString()
}
if (options.tag) {
headers['swarm-tag'] = String(options.tag)
}
if (Types.isBoolean(options.deferred)) {
headers['swarm-deferred-upload'] = options.deferred.toString()
}
Iif (options.redundancyStrategy) {
headers['swarm-redundancy-strategy'] = String(options.redundancyStrategy)
}
Iif (Types.isBoolean(options.fallback)) {
headers['swarm-redundancy-fallback-mode'] = options.fallback.toString()
}
Iif (options.timeoutMs) {
headers['swarm-chunk-retrieval-timeout'] = String(options.timeoutMs)
}
if (options.indexDocument) {
headers['swarm-index-document'] = String(options.indexDocument)
}
if (options.errorDocument) {
headers['swarm-error-document'] = String(options.errorDocument)
}
if (options.actPublisher) {
headers['swarm-act-publisher'] = new PublicKey(options.actPublisher as any).toCompressedHex()
}
if (options.actHistoryAddress) {
headers['swarm-act-history-address'] = new Reference(options.actHistoryAddress as any).toHex()
}
if (options.actTimestamp) {
headers['swarm-act-timestamp'] = String(options.actTimestamp)
}
if (options.actPublisher || options.actHistoryAddress || options.actTimestamp) {
headers['swarm-act'] = 'true'
}
Iif (options.gasPrice) {
headers['gas-price'] = String(options.gasPrice)
}
Iif (options.gasLimit) {
headers['gas-limit'] = String(options.gasLimit)
}
return headers
}
function isEnvelopeWithBatchId(value: unknown): value is EnvelopeWithBatchId {
if (!Types.isObject(value)) {
return false
}
const envelope = value as EnvelopeWithBatchId
return (
envelope.issuer !== undefined &&
envelope.index !== undefined &&
envelope.signature !== undefined &&
envelope.timestamp !== undefined &&
envelope.batchId !== undefined
)
}
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