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Perform grouping with existing notifications when refreshing 

Closes #88
This commit is contained in:
Shadowfacts 2022-04-26 22:57:46 -04:00
parent 7465abe0a9
commit eb9a5aeb42
4 changed files with 323 additions and 20 deletions
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76
Pachyderm/Sources/Pachyderm/Utilities/NotificationGroup.swift
View File

@ -8,8 +8,8 @@
import Foundation
public class NotificationGroup: Identifiable, Hashable {
public let notifications: [Notification]
public struct NotificationGroup: Identifiable, Hashable {
public private(set) var notifications: [Notification]
public let id: String
public let kind: Notification.Kind
public let statusState: StatusState?
@ -27,34 +27,90 @@ public class NotificationGroup: Identifiable, Hashable {
}
public static func ==(lhs: NotificationGroup, rhs: NotificationGroup) -> Bool {
return lhs.id == rhs.id
guard lhs.notifications.count == rhs.notifications.count else {
return false
}
for (a, b) in zip(lhs.notifications, rhs.notifications) where a.id != b.id {
return false
}
return true
}
public func hash(into hasher: inout Hasher) {
hasher.combine(id)
for notification in notifications {
hasher.combine(notification.id)
}
}
private mutating func append(_ notification: Notification) {
notifications.append(notification)
}
private mutating func append(group: NotificationGroup) {
notifications.append(contentsOf: group.notifications)
}
public static func createGroups(notifications: [Notification], only allowedTypes: [Notification.Kind]) -> [NotificationGroup] {
var groups = [[Notification]]()
var groups = [NotificationGroup]()
for notification in notifications {
if allowedTypes.contains(notification.kind) {
if let lastGroup = groups.last, let firstNotification = lastGroup.first, firstNotification.kind == notification.kind, firstNotification.status?.id == notification.status?.id {
if let lastGroup = groups.last, canMerge(notification: notification, into: lastGroup) {
groups[groups.count - 1].append(notification)
continue
} else if groups.count >= 2 {
let secondToLastGroup = groups[groups.count - 2]
if allowedTypes.contains(groups[groups.count - 1][0].kind), let firstNotification = secondToLastGroup.first, firstNotification.kind == notification.kind, firstNotification.status?.id == notification.status?.id {
if allowedTypes.contains(groups[groups.count - 1].kind), canMerge(notification: notification, into: secondToLastGroup) {
groups[groups.count - 2].append(notification)
continue
}
}
}
groups.append([notification])
groups.append(NotificationGroup(notifications: [notification])!)
}
return groups.map {
NotificationGroup(notifications: $0)!
return groups
}
private static func canMerge(notification: Notification, into group: NotificationGroup) -> Bool {
return notification.kind == group.kind && notification.status?.id == group.notifications.first!.status?.id
}
public static func mergeGroups(first: [NotificationGroup], second: [NotificationGroup], only allowedTypes: [Notification.Kind]) -> [NotificationGroup] {
guard !first.isEmpty else {
return second
}
guard !second.isEmpty else {
return first
}
var merged = first
var second = second
merged.reserveCapacity(second.count)
while let firstGroupFromSecond = second.first,
allowedTypes.contains(firstGroupFromSecond.kind) {
second.removeFirst()
guard let lastGroup = merged.last,
allowedTypes.contains(lastGroup.kind) else {
merged.append(firstGroupFromSecond)
break
}
if canMerge(notification: firstGroupFromSecond.notifications.first!, into: lastGroup) {
merged[merged.count - 1].append(group: firstGroupFromSecond)
} else if merged.count >= 2 {
let secondToLastGroup = merged[merged.count - 2]
if allowedTypes.contains(secondToLastGroup.kind), canMerge(notification: firstGroupFromSecond.notifications.first!, into: secondToLastGroup) {
merged[merged.count - 2].append(group: firstGroupFromSecond)
}
} else {
merged.append(firstGroupFromSecond)
}
}
merged.append(contentsOf: second)
return merged
}
}

235
Pachyderm/Tests/PachydermTests/NotificationGroupTests.swift Normal file
View File

@ -0,0 +1,235 @@
//
// NotificationGroupTests.swift
//
//
// Created by Shadowfacts on 4/26/22.
//
import XCTest
@testable import Pachyderm
class NotificationGroupTests: XCTestCase {
let decoder: JSONDecoder = {
let d = JSONDecoder()
d.dateDecodingStrategy = .iso8601
return d
}()
let statusA = """
{
"id": "1",
"created_at": "2019-11-23T07:28:34Z",
"account": {
"id": "2",
"username": "bar",
"acct": "bar",
"display_name": "bar",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@bar",
"uri": "https://example.com/@bar",
},
"url": "https://example.com/@bar/1",
"uri": "https://example.com/@bar/1",
"content": "",
"emojis": [],
"reblogs_count": 0,
"favourites_count": 0,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"media_attachments": [],
"mentions": [],
"tags": [],
}
}
"""
lazy var likeA1Data = """
{
"id": "1",
"type": "favourite",
"created_at": "2019-11-23T07:29:18Z",
"account": {
"id": "1",
"username": "foo",
"acct": "foo",
"display_name": "foo",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@foo",
"uri": "https://example.com/@foo",
},
"status": \(statusA)
""".data(using: .utf8)!
lazy var likeA1 = try! decoder.decode(Notification.self, from: likeA1Data)
lazy var likeA2Data = """
{
"id": "2",
"type": "favourite",
"created_at": "2019-11-23T07:30:00Z",
"account": {
"id": "2",
"username": "baz",
"acct": "baz",
"display_name": "baz",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@baz",
"uri": "https://example.com/@baz",
},
"status": \(statusA)
""".data(using: .utf8)!
lazy var likeA2 = try! decoder.decode(Notification.self, from: likeA2Data)
let statusB = """
{
"id": "2",
"created_at": "2019-11-23T07:28:34Z",
"account": {
"id": "2",
"username": "bar",
"acct": "bar",
"display_name": "bar",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@bar",
"uri": "https://example.com/@bar",
},
"url": "https://example.com/@bar/1",
"uri": "https://example.com/@bar/1",
"content": "",
"emojis": [],
"reblogs_count": 0,
"favourites_count": 0,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"media_attachments": [],
"mentions": [],
"tags": [],
}
}
"""
lazy var likeBData = """
{
"id": "3",
"type": "favourite",
"created_at": "2019-11-23T07:29:18Z",
"account": {
"id": "1",
"username": "foo",
"acct": "foo",
"display_name": "foo",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@foo",
"uri": "https://example.com/@foo",
},
"status": \(statusB)
""".data(using: .utf8)!
lazy var likeB = try! decoder.decode(Notification.self, from: likeBData)
lazy var mentionBData = """
{
"id": "4",
"type": "mention",
"created_at": "2019-11-23T07:29:18Z",
"account": {
"id": "1",
"username": "foo",
"acct": "foo",
"display_name": "foo",
"locked": false,
"created_at": "2019-11-01T01:01:01Z",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"note": "",
"url": "https://example.com/@foo",
"uri": "https://example.com/@foo",
},
"status": \(statusB)
""".data(using: .utf8)!
lazy var mentionB = try! decoder.decode(Notification.self, from: mentionBData)
func testGroupSimple() {
let groups = NotificationGroup.createGroups(notifications: [likeA1, likeA2], only: [.favourite])
XCTAssertEqual(groups, [NotificationGroup(notifications: [likeA1, likeA2])!])
}
func testGroupWithOtherGroupableInBetween() {
let groups = NotificationGroup.createGroups(notifications: [likeA1, likeB, likeA2], only: [.favourite])
XCTAssertEqual(groups, [
NotificationGroup(notifications: [likeA1, likeA2])!,
NotificationGroup(notifications: [likeB])!,
])
}
func testDontGroupWithUngroupableInBetween() {
let groups = NotificationGroup.createGroups(notifications: [likeA1, mentionB, likeA2], only: [.favourite])
XCTAssertEqual(groups, [
NotificationGroup(notifications: [likeA1])!,
NotificationGroup(notifications: [mentionB])!,
NotificationGroup(notifications: [likeA2])!,
])
}
func testMergeSimpleGroups() {
let group1 = NotificationGroup(notifications: [likeA1])!
let group2 = NotificationGroup(notifications: [likeA2])!
let merged = NotificationGroup.mergeGroups(first: [group1], second: [group2], only: [.favourite])
XCTAssertEqual(merged, [
NotificationGroup(notifications: [likeA1, likeA2])!
])
}
func testMergeGroupsWithOtherGroupableInBetween() {
let group1 = NotificationGroup(notifications: [likeA1])!
let group2 = NotificationGroup(notifications: [likeB])!
let group3 = NotificationGroup(notifications: [likeA2])!
let merged = NotificationGroup.mergeGroups(first: [group1, group2], second: [group3], only: [.favourite])
XCTAssertEqual(merged, [
NotificationGroup(notifications: [likeA1, likeA2])!,
NotificationGroup(notifications: [likeB])!,
])
let merged2 = NotificationGroup.mergeGroups(first: [group1], second: [group2, group3], only: [.favourite])
XCTAssertEqual(merged2, [
NotificationGroup(notifications: [likeA1, likeA2])!,
NotificationGroup(notifications: [likeB])!,
])
}
func testDontMergeWithUngroupableInBetween() {
let group1 = NotificationGroup(notifications: [likeA1])!
let group2 = NotificationGroup(notifications: [mentionB])!
let group3 = NotificationGroup(notifications: [likeA2])!
let merged = NotificationGroup.mergeGroups(first: [group1, group2], second: [group3], only: [.favourite])
XCTAssertEqual(merged, [
NotificationGroup(notifications: [likeA1])!,
NotificationGroup(notifications: [mentionB])!,
NotificationGroup(notifications: [likeA2])!,
])
}
}

10
Tusker.xcodeproj/xcshareddata/xcschemes/Pachyderm.xcscheme
View File

@ -28,6 +28,16 @@
selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
shouldUseLaunchSchemeArgsEnv = "YES">
<Testables>
<TestableReference
skipped = "NO">
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "PachydermTests"
BuildableName = "PachydermTests"
BlueprintName = "PachydermTests"
ReferencedContainer = "container:Pachyderm">
</BuildableReference>
</TestableReference>
</Testables>
</TestAction>
<LaunchAction

22
Tusker/Screens/Notifications/NotificationsTableViewController.swift
View File

@ -140,11 +140,14 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
self.older = older
}
let groups = NotificationGroup.createGroups(notifications: newNotifications, only: self.groupTypes)
let olderGroups = NotificationGroup.createGroups(notifications: newNotifications, only: self.groupTypes)
self.mastodonController.persistentContainer.addAll(notifications: newNotifications) {
var snapshot = currentSnapshot()
snapshot.appendItems(groups, toSection: .notifications)
let existingGroups = currentSnapshot().itemIdentifiers
let merged = NotificationGroup.mergeGroups(first: existingGroups, second: olderGroups, only: self.groupTypes)
var snapshot = NSDiffableDataSourceSnapshot<Section, NotificationGroup>()
snapshot.appendSections([.notifications])
snapshot.appendItems(merged, toSection: .notifications)
completion(.success(snapshot))
}
}
@ -173,15 +176,14 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
self.newer = newer
}
let groups = NotificationGroup.createGroups(notifications: newNotifications, only: self.groupTypes)
let newerGroups = NotificationGroup.createGroups(notifications: newNotifications, only: self.groupTypes)
self.mastodonController.persistentContainer.addAll(notifications: newNotifications) {
var snapshot = currentSnapshot()
if let first = snapshot.itemIdentifiers(inSection: .notifications).first {
snapshot.insertItems(groups, beforeItem: first)
} else {
snapshot.appendItems(groups, toSection: .notifications)
}
let existingGroups = currentSnapshot().itemIdentifiers
let merged = NotificationGroup.mergeGroups(first: newerGroups, second: existingGroups, only: self.groupTypes)
var snapshot = NSDiffableDataSourceSnapshot<Section, NotificationGroup>()
snapshot.appendSections([.notifications])
snapshot.appendItems(merged, toSection: .notifications)
completion(.success(snapshot))
}
}