From 46fe59c92016b835bdf5544033adb5d6c4613e0d Mon Sep 17 00:00:00 2001
From: sunxiaojian <snxiaojian@gmail.com>
Date: Thu, 22 Apr 2021 10:11:19 +0800
Subject: [PATCH] chore: add debounce for refresh

---
 .../Scene/HomeTimeline/HomeTimelineViewModel.swift | 14 +++++++++-----
 .../SuggestionAccountViewModel.swift               |  4 ++--
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/Mastodon/Scene/HomeTimeline/HomeTimelineViewModel.swift b/Mastodon/Scene/HomeTimeline/HomeTimelineViewModel.swift
index c154b050..a81056d0 100644
--- a/Mastodon/Scene/HomeTimeline/HomeTimelineViewModel.swift
+++ b/Mastodon/Scene/HomeTimeline/HomeTimelineViewModel.swift
@@ -34,6 +34,7 @@ final class HomeTimelineViewModel: NSObject {
     weak var tableView: UITableView?
     weak var timelineMiddleLoaderTableViewCellDelegate: TimelineMiddleLoaderTableViewCellDelegate?
     
+    let homeTimelineNeedRefresh = PassthroughSubject<Void, Never>()
     // output
     // top loader
     private(set) lazy var loadLatestStateMachine: GKStateMachine = {
@@ -122,6 +123,13 @@ final class HomeTimelineViewModel: NSObject {
             }
             .store(in: &disposeBag)
         
+        homeTimelineNeedRefresh
+            .debounce(for: 0.3, scheduler: DispatchQueue.main)
+            .sink { [weak self] _ in
+                self?.loadLatestStateMachine.enter(LoadLatestState.Loading.self)
+            }
+            .store(in: &disposeBag)
+        
     }
     
     deinit {
@@ -130,8 +138,4 @@ final class HomeTimelineViewModel: NSObject {
     
 }
 
-extension HomeTimelineViewModel: SuggestionAccountViewModelDelegate {
-    func homeTimelineNeedRefresh() {
-        loadLatestStateMachine.enter(LoadLatestState.Loading.self)
-    }
-}
+extension HomeTimelineViewModel: SuggestionAccountViewModelDelegate { }
diff --git a/Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift b/Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift
index ec52120d..494b0029 100644
--- a/Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift
+++ b/Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift
@@ -14,7 +14,7 @@ import os.log
 import UIKit
     
 protocol SuggestionAccountViewModelDelegate: AnyObject {
-    func homeTimelineNeedRefresh()
+    var homeTimelineNeedRefresh: PassthroughSubject<Void, Never> { get }
 }
 final class SuggestionAccountViewModel: NSObject {
     var disposeBag = Set<AnyCancellable>()
@@ -141,7 +141,7 @@ final class SuggestionAccountViewModel: NSObject {
                 case .failure(let error):
                     os_log("%{public}s[%{public}ld], %{public}s: follow failed. %s", (#file as NSString).lastPathComponent, #line, #function, error.localizedDescription)
                 case .finished:
-                    self.delegate?.homeTimelineNeedRefresh()
+                    self.delegate?.homeTimelineNeedRefresh.send()
                     break
                 }
             } receiveValue: { _ in