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Handle lookup item & attachment creation in IdentifierLookupController
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // | ||
| // IdentifierLookupController.swift | ||
| // Zotero | ||
| // | ||
| // Created by Miltiadis Vasilakis on 22/6/23. | ||
| // Copyright © 2023 Corporation for Digital Scholarship. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
|
|
||
| import CocoaLumberjackSwift | ||
| import RxSwift | ||
|
|
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| final class IdentifierLookupController: BackgroundDbProcessingActionHandler { | ||
| // MARK: Types | ||
| struct Update { | ||
| enum Kind: Hashable { | ||
| case itemStored | ||
| case pendingAttachments | ||
| case itemCreationFailed | ||
| } | ||
|
|
||
| let identifier: String | ||
| let response: ItemResponse | ||
| let attachments: [(Attachment, URL)] | ||
| let kind: Kind | ||
| } | ||
|
|
||
| // MARK: Properties | ||
| let observable: PublishSubject<Update> | ||
| internal let backgroundQueue: DispatchQueue | ||
| internal unowned let dbStorage: DbStorage | ||
| private unowned let fileStorage: FileStorage | ||
| private unowned let schemaController: SchemaController | ||
| private unowned let dateParser: DateParser | ||
| private unowned let remoteFileDownloader: RemoteAttachmentDownloader | ||
| private let disposeBag: DisposeBag | ||
|
|
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| // MARK: Object Lifecycle | ||
| init(dbStorage: DbStorage, fileStorage: FileStorage, schemaController: SchemaController, dateParser: DateParser, remoteFileDownloader: RemoteAttachmentDownloader) { | ||
| self.fileStorage = fileStorage | ||
| self.dbStorage = dbStorage | ||
| self.schemaController = schemaController | ||
| self.dateParser = dateParser | ||
| self.remoteFileDownloader = remoteFileDownloader | ||
|
|
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| self.backgroundQueue = DispatchQueue(label: "org.zotero.IdentifierLookupController.backgroundProcessing", qos: .userInitiated) | ||
| self.observable = PublishSubject() | ||
| self.disposeBag = DisposeBag() | ||
|
|
||
| remoteFileDownloader.observable | ||
| .subscribe { [weak self] update in | ||
| guard let self else { return } | ||
| switch update.kind { | ||
| case .ready(let attachment): | ||
| self.finish(download: update.download, attachment: attachment) | ||
|
|
||
| case .cancelled, .failed, .progress: | ||
| break | ||
| } | ||
| } | ||
| .disposed(by: self.disposeBag) | ||
| } | ||
|
|
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| // MARK: Actions | ||
| func process(identifier: String, response: ItemResponse, attachments: [(Attachment, URL)]) { | ||
| backgroundQueue.async { [weak self] in | ||
| guard let self = self else { return } | ||
| do { | ||
| try self.storeDataAndDownloadAttachmentIfNecessary(identifier: identifier, response: response, attachments: attachments) | ||
| } catch let error { | ||
| DDLogError("IdentifierLookupController: can't create item(s) - \(error)") | ||
| observable.on(.next(Update(identifier: identifier, response: response, attachments: attachments, kind: .itemCreationFailed))) | ||
| } | ||
| } | ||
| } | ||
|
|
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| // MARK: Helper Methods | ||
| private func storeDataAndDownloadAttachmentIfNecessary(identifier: String, response: ItemResponse, attachments: [(Attachment, URL)]) throws { | ||
| let request = CreateTranslatedItemsDbRequest(responses: [response], schemaController: schemaController, dateParser: dateParser) | ||
| try dbStorage.perform(request: request, on: backgroundQueue) | ||
| observable.on(.next(Update(identifier: identifier, response: response, attachments: attachments, kind: .itemStored))) | ||
|
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| guard Defaults.shared.shareExtensionIncludeAttachment else { return } | ||
|
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| let downloadData = attachments.map({ ($0, $1, response.key) }) | ||
| guard !downloadData.isEmpty else { return } | ||
| remoteFileDownloader.download(data: downloadData) | ||
| observable.on(.next(Update(identifier: identifier, response: response, attachments: attachments, kind: .pendingAttachments))) | ||
| } | ||
|
|
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| private func finish(download: RemoteAttachmentDownloader.Download, attachment: Attachment) { | ||
| let localizedType = schemaController.localized(itemType: ItemTypes.attachment) ?? ItemTypes.attachment | ||
|
|
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| backgroundQueue.async { [weak self] in | ||
| guard let self else { return } | ||
|
|
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| do { | ||
| let request = CreateAttachmentDbRequest( | ||
| attachment: attachment, | ||
| parentKey: download.parentKey, | ||
| localizedType: localizedType, | ||
| includeAccessDate: attachment.hasUrl, | ||
| collections: [], | ||
| tags: [] | ||
| ) | ||
| _ = try self.dbStorage.perform(request: request, on: self.backgroundQueue) | ||
| } catch let error { | ||
| DDLogError("IdentifierLookupController: can't store attachment after download - \(error)") | ||
|
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| // Storing item failed, remove downloaded file | ||
| guard case .file(let filename, let contentType, _, _) = attachment.type else { return } | ||
| let file = Files.attachmentFile(in: attachment.libraryId, key: attachment.key, filename: filename, contentType: contentType) | ||
| try? self.fileStorage.remove(file) | ||
| } | ||
| } | ||
| } | ||
| } |
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