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//
// FileProviderExtension+Thumbnail.swift
// PickerFileProvider
//
// Created by Marino Faggiana on 28/05/18.
// Copyright © 2018 Marino Faggiana. All rights reserved.
//
// Author Marino Faggiana <marino.faggiana@nextcloud.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
import FileProvider
import NCCommunication
extension FileProviderExtension {
override func fetchThumbnails(for itemIdentifiers: [NSFileProviderItemIdentifier], requestedSize size: CGSize, perThumbnailCompletionHandler: @escaping (NSFileProviderItemIdentifier, Data?, Error?) -> Void, completionHandler: @escaping (Error?) -> Void) -> Progress {
let progress = Progress(totalUnitCount: Int64(itemIdentifiers.count))
var counterProgress: Int64 = 0
for itemIdentifier in itemIdentifiers {
guard let metadata = fileProviderUtility.sharedInstance.getTableMetadataFromItemIdentifier(itemIdentifier) else {
counterProgress += 1
if (counterProgress == progress.totalUnitCount) { completionHandler(nil) }
continue
}
if (metadata.hasPreview) {
let fileNamePath = CCUtility.returnFileNamePath(fromFileName: metadata.fileName, serverUrl: metadata.serverUrl, urlBase: fileProviderData.sharedInstance.accountUrlBase, account: metadata.account)!
let fileNameIconLocalPath = CCUtility.getDirectoryProviderStorageIconOcId(metadata.ocId, etag: metadata.etag)!
NCCommunication.shared.getPreview(fileNamePath: fileNamePath, widthPreview: Int(k_sizeIcon), heightPreview: Int(k_sizeIcon)) { (account, data, errorCode, errorDescription) in
if errorCode == 0 && data != nil {
do {
try data!.write(to: URL.init(fileURLWithPath: fileNameIconLocalPath), options: .atomic)
} catch { }
perThumbnailCompletionHandler(itemIdentifier, data, nil)
} else {
perThumbnailCompletionHandler(itemIdentifier, nil, NSFileProviderError(.serverUnreachable))
}
counterProgress += 1
if (counterProgress == progress.totalUnitCount) {
completionHandler(nil)
}
}
} else {
counterProgress += 1
if (counterProgress == progress.totalUnitCount) {
completionHandler(nil)
}
}
}
return progress
}
}
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