mirror of
https://github.com/Swiftgram/Telegram-iOS.git
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52 lines
3.2 KiB
Swift
52 lines
3.2 KiB
Swift
import Foundation
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#if os(macOS)
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import PostboxMac
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import SwiftSignalKitMac
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#else
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import Postbox
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import SwiftSignalKit
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import Photos
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#endif
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private func fetchCloudMediaLocation(account: Account, resource: TelegramMediaResource, datacenterId: Int, size: Int?, ranges: Signal<IndexSet, NoError>, tag: MediaResourceFetchTag?) -> Signal<MediaResourceDataFetchResult, NoError> {
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return multipartFetch(account: account, resource: resource, datacenterId: datacenterId, size: size, ranges: ranges, tag: tag)
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}
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private func fetchLocalFileResource(path: String, move: Bool) -> Signal<MediaResourceDataFetchResult, NoError> {
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return Signal { subscriber in
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if move {
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subscriber.putNext(.moveLocalFile(path: path))
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subscriber.putCompletion()
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} else {
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if let data = try? Data(contentsOf: URL(fileURLWithPath: path), options: [.mappedRead]) {
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subscriber.putNext(.dataPart(resourceOffset: 0, data: data, range: 0 ..< data.count, complete: true))
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subscriber.putCompletion()
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} else {
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subscriber.putNext(.dataPart(resourceOffset: 0, data: Data(), range: 0 ..< 0, complete: false))
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}
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}
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return EmptyDisposable
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}
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}
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func fetchResource(account: Account, resource: MediaResource, ranges: Signal<IndexSet, NoError>, tag: MediaResourceFetchTag?) -> Signal<MediaResourceDataFetchResult, NoError>? {
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if let _ = resource as? EmptyMediaResource {
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return .single(.reset) |> then(.never())
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} else if let secretFileResource = resource as? SecretFileMediaResource {
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return .single(.dataPart(resourceOffset: 0, data: Data(), range: 0 ..< 0, complete: false)) |> then(fetchSecretFileResource(account: account, resource: secretFileResource, ranges: ranges, tag: tag))
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} else if let cloudResource = resource as? TelegramMultipartFetchableResource {
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return .single(.dataPart(resourceOffset: 0, data: Data(), range: 0 ..< 0, complete: false)) |> then(fetchCloudMediaLocation(account: account, resource: cloudResource, datacenterId: cloudResource.datacenterId, size: resource.size == 0 ? nil : resource.size, ranges: ranges, tag: tag))
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} else if let webFileResource = resource as? WebFileReferenceMediaResource {
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return currentWebDocumentsHostDatacenterId(postbox: account.postbox, isTestingEnvironment: account.testingEnvironment)
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|> mapToSignal { datacenterId -> Signal<MediaResourceDataFetchResult, NoError> in
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return .single(.dataPart(resourceOffset: 0, data: Data(), range: 0 ..< 0, complete: false)) |> then(fetchCloudMediaLocation(account: account, resource: webFileResource, datacenterId: Int(datacenterId), size: resource.size == 0 ? nil : resource.size, ranges: ranges, tag: tag))
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}
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} else if let localFileResource = resource as? LocalFileReferenceMediaResource {
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return fetchLocalFileResource(path: localFileResource.localFilePath, move: localFileResource.isUniquelyReferencedTemporaryFile)
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} else if let httpReference = resource as? HttpReferenceMediaResource {
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return .single(.dataPart(resourceOffset: 0, data: Data(), range: 0 ..< 0, complete: false)) |> then(fetchHttpResource(url: httpReference.url))
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}
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return nil
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}
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