mirror of
https://github.com/metabolist/metatext.git
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454 lines
16 KiB
Swift
454 lines
16 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Foundation
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import Combine
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import GRDB
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// swiftlint:disable file_length
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struct ContentDatabase {
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private let databaseQueue: DatabaseQueue
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init(identityID: UUID, environment: AppEnvironment) throws {
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guard
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let documentsDirectory = NSSearchPathForDirectoriesInDomains(
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.documentDirectory,
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.userDomainMask, true)
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.first
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else { throw DatabaseError.documentsDirectoryNotFound }
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if environment.inMemoryContent {
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databaseQueue = DatabaseQueue()
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} else {
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databaseQueue = try DatabaseQueue(path: "\(documentsDirectory)/\(identityID.uuidString).sqlite3")
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}
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try Self.migrate(databaseQueue)
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try Self.createTemporaryTables(databaseQueue)
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Self.attributedStringCache = environment.attributedStringCache
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}
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}
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extension ContentDatabase {
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func insert(statuses: [Status], collection: StatusCollection? = nil) -> AnyPublisher<Never, Error> {
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databaseQueue.writePublisher {
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try collection?.save($0)
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for status in statuses {
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for component in status.storedComponents() {
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try component.save($0)
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}
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try collection?.joinRecord(status: status).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 statusesObservation(timeline: Timeline) -> AnyPublisher<[Status], Error> {
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ValueObservation
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.tracking(timeline.statuses
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.including(required: StoredStatus.account)
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.including(optional: StoredStatus.reblogAccount)
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.including(optional: StoredStatus.reblog)
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.asRequest(of: StatusResult.self)
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.fetchAll)
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.removeDuplicates()
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.publisher(in: databaseQueue)
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.map { $0.map(Status.init(statusResult:)) }
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.eraseToAnyPublisher()
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}
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func statusesObservation(collection: TransientStatusCollection) -> AnyPublisher<[Status], Error> {
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ValueObservation.tracking {
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try StatusResult.fetchAll(
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$0,
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StoredStatus.filter(
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try collection
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.elements
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.fetchAll($0)
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.map(\.statusId)
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.contains(Column("id")))
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.including(required: StoredStatus.account)
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.including(optional: StoredStatus.reblogAccount)
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.including(optional: StoredStatus.reblog))
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}
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.removeDuplicates()
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.publisher(in: databaseQueue)
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.map { $0.map(Status.init(statusResult:)) }
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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 var attributedStringCache: AttributedStringCache?
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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: "account", 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("moved", .boolean)
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t.column("discoverable", .boolean)
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}
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try db.create(table: "storedStatus", 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("account", 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("storedStatus", 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("storedStatus", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.primaryKey(["timelineId", "statusId"], onConflict: .replace)
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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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static func createTemporaryTables(_ writer: DatabaseWriter) throws {
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try writer.write { database in
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try database.create(table: "transientStatusCollection", temporary: true, ifNotExists: true) { t in
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t.column("id", .text).notNull().primaryKey(onConflict: .replace)
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}
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try database.create(table: "transientStatusCollectionElement", temporary: true, ifNotExists: true) { t in
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t.column("transientStatusCollectionId", .text)
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.notNull()
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.references("transientStatusCollection", column: "id", onDelete: .cascade, onUpdate: .cascade)
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t.column("statusId", .text).notNull()
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t.primaryKey(["transientStatusCollectionId", "statusId"], onConflict: .replace)
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}
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}
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}
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}
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extension Account: TableRecord, FetchableRecord, PersistableRecord {
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static var databaseDecodingUserInfo: [CodingUserInfoKey: Any] {
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var userInfo = [CodingUserInfoKey: Any]()
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if let attributedStringCache = ContentDatabase.attributedStringCache {
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userInfo[.attributedStringCache] = attributedStringCache
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}
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return userInfo
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}
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static func databaseJSONDecoder(for column: String) -> JSONDecoder {
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MastodonDecoder()
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}
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static func databaseJSONEncoder(for column: String) -> JSONEncoder {
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MastodonEncoder()
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}
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}
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protocol StatusCollection: FetchableRecord, PersistableRecord {
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var id: String { get }
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func joinRecord(status: Status) -> PersistableRecord
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}
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private struct TimelineStatusJoin: Codable, TableRecord, FetchableRecord, PersistableRecord {
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let timelineId: String
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let statusId: String
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static let status = belongsTo(StoredStatus.self)
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}
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extension Timeline: StatusCollection {
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enum Columns: String, ColumnExpression {
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case id, listTitle
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}
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init(row: Row) {
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switch row[Columns.id] as String {
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case Timeline.home.id:
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self = .home
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case Timeline.local.id:
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self = .local
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case Timeline.federated.id:
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self = .federated
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default:
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self = .list(MastodonList(id: row[Columns.id], title: row[Columns.listTitle]))
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}
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}
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func encode(to container: inout PersistenceContainer) {
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container[Columns.id] = id
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if case let .list(list) = self {
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container[Columns.listTitle] = list.title
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}
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}
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func joinRecord(status: Status) -> PersistableRecord {
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TimelineStatusJoin(timelineId: id, statusId: status.id)
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}
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}
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private extension Timeline {
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static let statusJoins = hasMany(TimelineStatusJoin.self)
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static let statuses = hasMany(StoredStatus.self,
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through: statusJoins,
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using: TimelineStatusJoin.status).order(Column("createdAt").desc)
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var statusJoins: QueryInterfaceRequest<TimelineStatusJoin> {
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request(for: Self.statusJoins)
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}
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var statuses: QueryInterfaceRequest<StoredStatus> {
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request(for: Self.statuses)
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}
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}
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private struct TransientStatusCollectionElement: Codable, TableRecord, FetchableRecord, PersistableRecord {
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let transientStatusCollectionId: String
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let statusId: String
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static let status = belongsTo(StoredStatus.self, key: "statusId")
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}
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extension TransientStatusCollection: StatusCollection {
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func joinRecord(status: Status) -> PersistableRecord {
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TransientStatusCollectionElement(transientStatusCollectionId: id, statusId: status.id)
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}
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}
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private extension TransientStatusCollection {
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static let elements = hasMany(TransientStatusCollectionElement.self)
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var elements: QueryInterfaceRequest<TransientStatusCollectionElement> {
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request(for: Self.elements)
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}
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}
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private struct StoredStatus: Codable, Hashable {
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let id: String
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let uri: String
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let createdAt: Date
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let accountId: String
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let content: HTML
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let visibility: Status.Visibility
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let sensitive: Bool
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let spoilerText: String
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let mediaAttachments: [Attachment]
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let mentions: [Mention]
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let tags: [Tag]
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let emojis: [Emoji]
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let reblogsCount: Int
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let favouritesCount: Int
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let repliesCount: Int
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let application: Application?
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let url: URL?
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let inReplyToId: String?
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let inReplyToAccountId: String?
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let reblogId: String?
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let poll: Poll?
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let card: Card?
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let language: String?
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let text: String?
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let favourited: Bool
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let reblogged: Bool
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let muted: Bool
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let bookmarked: Bool
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let pinned: Bool?
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}
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private extension StoredStatus {
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static let account = belongsTo(Account.self, key: "account")
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static let reblogAccount = hasOne(Account.self, through: Self.reblog, using: Self.account, key: "reblogAccount")
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static let reblog = belongsTo(StoredStatus.self, key: "reblog")
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var account: QueryInterfaceRequest<Account> {
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request(for: Self.account)
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}
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var reblogAccount: QueryInterfaceRequest<Account> {
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request(for: Self.reblogAccount)
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}
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var reblog: QueryInterfaceRequest<StoredStatus> {
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request(for: Self.reblog)
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}
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init(status: Status) {
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id = status.id
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uri = status.uri
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createdAt = status.createdAt
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accountId = status.account.id
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content = status.content
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visibility = status.visibility
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sensitive = status.sensitive
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spoilerText = status.spoilerText
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mediaAttachments = status.mediaAttachments
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mentions = status.mentions
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tags = status.tags
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emojis = status.emojis
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reblogsCount = status.reblogsCount
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favouritesCount = status.favouritesCount
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repliesCount = status.repliesCount
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application = status.application
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url = status.url
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inReplyToId = status.inReplyToId
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inReplyToAccountId = status.inReplyToAccountId
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reblogId = status.reblog?.id
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poll = status.poll
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card = status.card
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language = status.language
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text = status.text
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favourited = status.favourited
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reblogged = status.reblogged
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muted = status.muted
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bookmarked = status.bookmarked
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pinned = status.pinned
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}
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}
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extension StoredStatus: TableRecord, FetchableRecord, PersistableRecord {
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static var databaseDecodingUserInfo: [CodingUserInfoKey: Any] {
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var userInfo = [CodingUserInfoKey: Any]()
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if let attributedStringCache = ContentDatabase.attributedStringCache {
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userInfo[.attributedStringCache] = attributedStringCache
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}
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return userInfo
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}
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static func databaseJSONDecoder(for column: String) -> JSONDecoder {
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MastodonDecoder()
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}
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static func databaseJSONEncoder(for column: String) -> JSONEncoder {
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MastodonEncoder()
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}
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}
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private struct StatusResult: Codable, Hashable, FetchableRecord {
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let account: Account
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let status: StoredStatus
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let reblogAccount: Account?
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let reblog: StoredStatus?
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}
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private extension Status {
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func storedComponents() -> [PersistableRecord] {
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var components: [PersistableRecord] = [account]
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if let reblog = reblog {
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components.append(reblog.account)
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components.append(StoredStatus(status: reblog))
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}
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components.append(StoredStatus(status: self))
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return components
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}
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convenience init(statusResult: StatusResult) {
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var reblog: Status?
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if let reblogResult = statusResult.reblog, let reblogAccount = statusResult.reblogAccount {
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reblog = Status(storedStatus: reblogResult, account: reblogAccount, reblog: nil)
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}
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self.init(storedStatus: statusResult.status, account: statusResult.account, reblog: reblog)
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}
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convenience init(storedStatus: StoredStatus, account: Account, reblog: Status?) {
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self.init(
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id: storedStatus.id,
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uri: storedStatus.uri,
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createdAt: storedStatus.createdAt,
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account: account,
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content: storedStatus.content,
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visibility: storedStatus.visibility,
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sensitive: storedStatus.sensitive,
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spoilerText: storedStatus.spoilerText,
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mediaAttachments: storedStatus.mediaAttachments,
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mentions: storedStatus.mentions,
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tags: storedStatus.tags,
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emojis: storedStatus.emojis,
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reblogsCount: storedStatus.reblogsCount,
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favouritesCount: storedStatus.favouritesCount,
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repliesCount: storedStatus.repliesCount,
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application: storedStatus.application,
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url: storedStatus.url,
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inReplyToId: storedStatus.inReplyToId,
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inReplyToAccountId: storedStatus.inReplyToAccountId,
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reblog: reblog,
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poll: storedStatus.poll,
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card: storedStatus.card,
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language: storedStatus.language,
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text: storedStatus.text,
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favourited: storedStatus.favourited,
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reblogged: storedStatus.reblogged,
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muted: storedStatus.muted,
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bookmarked: storedStatus.bookmarked,
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pinned: storedStatus.pinned)
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}
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}
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// swiftlint:enable file_length
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