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298 lines
12 KiB
Swift
298 lines
12 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 databaseQueue: DatabaseQueue
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public init(identityID: UUID, inMemory: Bool, keychain: Keychain.Type) throws {
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if inMemory {
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databaseQueue = 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(try Secrets.databaseKey(identityID: identityID, keychain: keychain))
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}
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databaseQueue = try DatabaseQueue(path: path, configuration: configuration)
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}
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try Self.migrate(databaseQueue)
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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: try fileURL(identityID: identityID))
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}
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func insert(status: Status) -> AnyPublisher<Never, Error> {
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databaseQueue.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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databaseQueue.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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databaseQueue.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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Column("parentId") == parentID
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&& Column("section") == section.rawValue
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&& Column("index") >= statuses.count)
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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 setLists(_ lists: [MastodonList]) -> AnyPublisher<Never, Error> {
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databaseQueue.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.filter(!(Timeline.nonLists.map(\.id) + lists.map(\.id)).contains(Column("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 createList(_ list: MastodonList) -> AnyPublisher<Never, Error> {
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databaseQueue.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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databaseQueue.writePublisher(updates: Timeline.filter(Column("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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databaseQueue.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(Column("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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databaseQueue.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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databaseQueue.writePublisher(updates: Filter.filter(Column("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: databaseQueue)
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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(Column("id") == parentID).statusResultRequest.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: databaseQueue)
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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.nonLists.map(\.id).contains(Column("id")))
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.order(Column("listTitle").collating(.localizedCaseInsensitiveCompare).asc)
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.fetchAll)
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.removeDuplicates()
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.publisher(in: databaseQueue)
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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(Filter.filter(Column("expiresAt") == nil || Column("expiresAt") > date).fetchAll)
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.removeDuplicates()
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.publisher(in: databaseQueue)
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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(Column("expiresAt") < date).fetchAll)
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.removeDuplicates()
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.publisher(in: databaseQueue)
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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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// swiftlint:disable function_body_length
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static func migrate(_ writer: DatabaseWriter) throws {
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var migrator = DatabaseMigrator()
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migrator.registerMigration("createStatuses") { db in
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try db.create(table: "accountRecord", ifNotExists: true) { t in
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t.column("id", .text).notNull().primaryKey(onConflict: .replace)
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t.column("username", .text).notNull()
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t.column("acct", .text).notNull()
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t.column("displayName", .text).notNull()
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t.column("locked", .boolean).notNull()
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t.column("createdAt", .date).notNull()
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t.column("followersCount", .integer).notNull()
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t.column("followingCount", .integer).notNull()
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t.column("statusesCount", .integer).notNull()
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t.column("note", .text).notNull()
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t.column("url", .text).notNull()
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t.column("avatar", .text).notNull()
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t.column("avatarStatic", .text).notNull()
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t.column("header", .text).notNull()
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t.column("headerStatic", .text).notNull()
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t.column("fields", .blob).notNull()
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t.column("emojis", .blob).notNull()
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t.column("bot", .boolean).notNull()
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t.column("discoverable", .boolean)
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t.column("movedId", .text).indexed().references("accountRecord", column: "id")
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}
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try db.create(table: "statusRecord", ifNotExists: true) { t in
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t.column("id", .text).notNull().primaryKey(onConflict: .replace)
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t.column("uri", .text).notNull()
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t.column("createdAt", .datetime).notNull()
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t.column("accountId", .text).indexed().notNull().references("accountRecord", column: "id")
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t.column("content", .text).notNull()
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t.column("visibility", .text).notNull()
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t.column("sensitive", .boolean).notNull()
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t.column("spoilerText", .text).notNull()
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t.column("mediaAttachments", .blob).notNull()
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t.column("mentions", .blob).notNull()
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t.column("tags", .blob).notNull()
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t.column("emojis", .blob).notNull()
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t.column("reblogsCount", .integer).notNull()
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t.column("favouritesCount", .integer).notNull()
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t.column("repliesCount", .integer).notNull()
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t.column("application", .blob)
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t.column("url", .text)
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t.column("inReplyToId", .text)
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t.column("inReplyToAccountId", .text)
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t.column("reblogId", .text).indexed().references("statusRecord", column: "id")
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t.column("poll", .blob)
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t.column("card", .blob)
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t.column("language", .text)
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t.column("text", .text)
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t.column("favourited", .boolean).notNull()
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t.column("reblogged", .boolean).notNull()
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t.column("muted", .boolean).notNull()
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t.column("bookmarked", .boolean).notNull()
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t.column("pinned", .boolean)
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}
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try db.create(table: "timeline", ifNotExists: true) { t in
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t.column("id", .text).notNull().primaryKey(onConflict: .replace)
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t.column("listTitle", .text)
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}
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try db.create(table: "timelineStatusJoin", ifNotExists: true) { t in
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t.column("timelineId", .text)
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.indexed()
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.notNull()
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.references("timeline", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.column("statusId", .text)
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.indexed()
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.notNull()
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.references("statusRecord", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.primaryKey(["timelineId", "statusId"], onConflict: .replace)
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}
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try db.create(table: "statusContextJoin", ifNotExists: true) { t in
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t.column("parentId", .text)
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.indexed()
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.notNull()
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.references("statusRecord", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.column("statusId", .text)
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.indexed()
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.notNull()
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.references("statusRecord", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.column("section", .text).notNull()
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t.column("index", .integer).notNull()
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t.primaryKey(["parentId", "statusId"], onConflict: .replace)
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}
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try db.create(table: "filter", ifNotExists: true) { t in
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t.column("id", .text).notNull().primaryKey(onConflict: .replace)
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t.column("phrase", .text).notNull()
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t.column("context", .blob).notNull()
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t.column("expiresAt", .date)
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t.column("irreversible", .boolean).notNull()
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t.column("wholeWord", .boolean).notNull()
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}
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}
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try migrator.migrate(writer)
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}
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// swiftlint:enable function_body_length
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}
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