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304 lines
11 KiB
Swift
304 lines
11 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import Foundation
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import GRDB
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import Keychain
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import Mastodon
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import Secrets
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public struct ContentDatabase {
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private let databaseWriter: DatabaseWriter
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public init(identityID: UUID, inMemory: Bool, keychain: Keychain.Type) throws {
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if inMemory {
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databaseWriter = DatabaseQueue()
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} else {
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let path = try Self.fileURL(identityID: identityID).path
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var configuration = Configuration()
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configuration.prepareDatabase {
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try $0.usePassphrase(Secrets.databaseKey(identityID: identityID, keychain: keychain))
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}
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databaseWriter = try DatabasePool(path: path, configuration: configuration)
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}
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try migrator.migrate(databaseWriter)
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try clean()
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}
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}
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public extension ContentDatabase {
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static func delete(forIdentityID identityID: UUID) throws {
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try FileManager.default.removeItem(at: fileURL(identityID: identityID))
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}
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func insert(status: Status) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher(updates: status.save)
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func insert(statuses: [Status], timeline: Timeline) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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try timeline.save($0)
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for status in statuses {
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try status.save($0)
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try TimelineStatusJoin(timelineId: timeline.id, statusId: status.id).save($0)
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}
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func insert(context: Context, parentID: String) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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for status in context.ancestors + context.descendants {
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try status.save($0)
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}
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for (section, statuses) in [(StatusContextJoin.Section.ancestors, context.ancestors),
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(StatusContextJoin.Section.descendants, context.descendants)] {
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for (index, status) in statuses.enumerated() {
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try StatusContextJoin(
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parentId: parentID,
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statusId: status.id,
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section: section,
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index: index)
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.save($0)
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}
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try StatusContextJoin.filter(
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StatusContextJoin.Columns.parentId == parentID
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&& StatusContextJoin.Columns.section == section.rawValue
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&& !statuses.map(\.id).contains(StatusContextJoin.Columns.statusId))
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.deleteAll($0)
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}
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func insert(pinnedStatuses: [Status], accountID: String) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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for (index, status) in pinnedStatuses.enumerated() {
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try status.save($0)
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try AccountPinnedStatusJoin(accountId: accountID, statusId: status.id, index: index).save($0)
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}
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try AccountPinnedStatusJoin.filter(
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AccountPinnedStatusJoin.Columns.accountId == accountID
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&& !pinnedStatuses.map(\.id).contains(AccountPinnedStatusJoin.Columns.statusId))
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.deleteAll($0)
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func insert(
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statuses: [Status],
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accountID: String,
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collection: ProfileCollection) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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for status in statuses {
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try status.save($0)
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try AccountStatusJoin(accountId: accountID, statusId: status.id, collection: collection).save($0)
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}
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func append(accounts: [Account], toList list: AccountList) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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try list.save($0)
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let count = try list.accounts.fetchCount($0)
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for (index, account) in accounts.enumerated() {
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try account.save($0)
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try AccountListJoin(accountId: account.id, listId: list.id, index: count + index).save($0)
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}
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func setLists(_ lists: [List]) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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for list in lists {
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try Timeline.list(list).save($0)
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}
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try Timeline
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.filter(!(Timeline.authenticatedDefaults.map(\.id) + lists.map(\.id)).contains(Timeline.Columns.id)
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&& Timeline.Columns.listTitle != nil)
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.deleteAll($0)
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func createList(_ list: List) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher(updates: Timeline.list(list).save)
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func deleteList(id: String) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher(updates: Timeline.filter(Timeline.Columns.id == id).deleteAll)
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func setFilters(_ filters: [Filter]) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher {
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for filter in filters {
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try filter.save($0)
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}
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try Filter.filter(!filters.map(\.id).contains(Filter.Columns.id)).deleteAll($0)
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}
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func createFilter(_ filter: Filter) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher(updates: filter.save)
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func deleteFilter(id: String) -> AnyPublisher<Never, Error> {
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databaseWriter.writePublisher(updates: Filter.filter(Filter.Columns.id == id).deleteAll)
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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func statusesObservation(timeline: Timeline) -> AnyPublisher<[[Status]], Error> {
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ValueObservation.tracking(timeline.statuses.fetchAll)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map { [$0.map(Status.init(result:))] }
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.eraseToAnyPublisher()
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}
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func contextObservation(parentID: String) -> AnyPublisher<[[Status]], Error> {
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ValueObservation.tracking { db -> [[StatusResult]] in
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guard let parent = try StatusRecord.filter(StatusRecord.Columns.id == parentID)
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.statusResultRequest
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.fetchOne(db) else {
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return [[]]
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}
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let ancestors = try parent.status.ancestors.fetchAll(db)
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let descendants = try parent.status.descendants.fetchAll(db)
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return [ancestors, [parent], descendants]
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}
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map { $0.map { $0.map(Status.init(result:)) } }
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.eraseToAnyPublisher()
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}
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func statusesObservation(
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accountID: String,
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collection: ProfileCollection) -> AnyPublisher<[[Status]], Error> {
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ValueObservation.tracking { db -> [[StatusResult]] in
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let statuses = try StatusRecord.filter(
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AccountStatusJoin
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.select(AccountStatusJoin.Columns.statusId, as: String.self)
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.filter(sql: "accountId = ? AND collection = ?", arguments: [accountID, collection.rawValue])
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.contains(StatusRecord.Columns.id))
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.order(StatusRecord.Columns.createdAt.desc)
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.statusResultRequest
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.fetchAll(db)
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if
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case .statuses = collection,
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let accountRecord = try AccountRecord.filter(AccountRecord.Columns.id == accountID).fetchOne(db) {
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let pinnedStatuses = try accountRecord.pinnedStatuses.fetchAll(db)
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return [pinnedStatuses, statuses]
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} else {
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return [statuses]
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}
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}
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map { $0.map { $0.map(Status.init(result:)) } }
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.eraseToAnyPublisher()
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}
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func listsObservation() -> AnyPublisher<[Timeline], Error> {
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ValueObservation.tracking(Timeline.filter(Timeline.Columns.listTitle != nil)
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.order(Timeline.Columns.listTitle.asc)
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.fetchAll)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.eraseToAnyPublisher()
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}
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func activeFiltersObservation(date: Date, context: Filter.Context? = nil) -> AnyPublisher<[Filter], Error> {
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ValueObservation.tracking(
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Filter.filter(Filter.Columns.expiresAt == nil || Filter.Columns.expiresAt > date).fetchAll)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map {
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guard let context = context else { return $0 }
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return $0.filter { $0.context.contains(context) }
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}
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.eraseToAnyPublisher()
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}
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func expiredFiltersObservation(date: Date) -> AnyPublisher<[Filter], Error> {
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ValueObservation.tracking(Filter.filter(Filter.Columns.expiresAt < date).fetchAll)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.eraseToAnyPublisher()
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}
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func accountObservation(id: String) -> AnyPublisher<Account?, Error> {
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ValueObservation.tracking(AccountRecord.filter(AccountRecord.Columns.id == id).accountResultRequest.fetchOne)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map {
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if let result = $0 {
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return Account(result: result)
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} else {
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return nil
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}
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}
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.eraseToAnyPublisher()
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}
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func accountListObservation(_ list: AccountList) -> AnyPublisher<[Account], Error> {
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ValueObservation.tracking(list.accounts.fetchAll)
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.removeDuplicates()
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.publisher(in: databaseWriter)
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.map { $0.map(Account.init(result:)) }
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.eraseToAnyPublisher()
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}
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}
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private extension ContentDatabase {
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static func fileURL(identityID: UUID) throws -> URL {
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try FileManager.default.databaseDirectoryURL(name: identityID.uuidString)
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}
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func clean() throws {
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try databaseWriter.write {
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try Timeline.deleteAll($0)
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try StatusRecord.deleteAll($0)
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try AccountRecord.deleteAll($0)
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try AccountList.deleteAll($0)
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}
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}
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}
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