feat: add auto complete replace input action

Mastodon/Diffiable/Item/AutoCompleteItem.swift

@@ -47,6 +47,7 @@ extension AutoCompleteItem: Hashable {
             hasher.combine(account.id)
         case .emoji(let emoji):
             hasher.combine(emoji.shortcode)
+            hasher.combine(emoji.url)
         case .bottomLoader:
             hasher.combine(String(describing: AutoCompleteItem.bottomLoader.self))
         }

Mastodon/Diffiable/Section/AutoCompleteSection.swift

@@ -37,6 +37,7 @@ extension AutoCompleteSection {
                 return cell
             case .bottomLoader:
                 let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self), for: indexPath) as! TimelineBottomLoaderTableViewCell
+                cell.startAnimating()
                 return cell
             }
         }

Mastodon/Scene/Compose/AutoComplete/AutoCompleteViewController.swift

@@ -9,12 +9,18 @@ import os.log
 import UIKit
 import Combine
 
+protocol AutoCompleteViewControllerDelegate: AnyObject {
+    func autoCompleteViewController(_ viewController: AutoCompleteViewController, didSelectItem item: AutoCompleteItem)
+}
+
 final class AutoCompleteViewController: UIViewController {
 
     static let chevronViewHeight: CGFloat = 24
     
     var viewModel: AutoCompleteViewModel!
     var disposeBag = Set<AnyCancellable>()
+    
+    weak var delegate: AutoCompleteViewControllerDelegate?
 
     let chevronView = AutoCompleteTopChevronView()
     let containerBackgroundView: UIView = {
@@ -26,6 +32,7 @@ final class AutoCompleteViewController: UIViewController {
     let tableView: UITableView = {
         let tableView = ControlContainableTableView()
         tableView.register(AutoCompleteTableViewCell.self, forCellReuseIdentifier: String(describing: AutoCompleteTableViewCell.self))
+        tableView.register(TimelineBottomLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self))
         tableView.rowHeight = UITableView.automaticDimension
         tableView.separatorStyle = .none
         tableView.backgroundColor = .clear
@@ -96,6 +103,10 @@ extension AutoCompleteViewController: UITableViewDelegate {
     func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: indexPath: %s", ((#file as NSString).lastPathComponent), #line, #function, indexPath.debugDescription)
         tableView.deselectRow(at: indexPath, animated: true)
+        
+        guard let diffableDataSource = viewModel.diffableDataSource else { return }
+        guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
+        delegate?.autoCompleteViewController(self, didSelectItem: item)
     }
     
     func tableView(_ tableView: UITableView, didHighlightRowAt indexPath: IndexPath) {

Mastodon/Scene/Compose/AutoComplete/AutoCompleteViewModel+State.swift

@@ -99,9 +99,9 @@ extension AutoCompleteViewModel.State {
             let searchPattern = ArraySlice(String(searchText.dropFirst()))
             let passthroughs = emojiTrie.passthrough(searchPattern)
             let matchingEmojis = passthroughs
-                .map { $0.values }      // [Set<Emoji>]
+                .map { $0.values }                                              // [Set<Emoji>]
                 .map { set in set.compactMap { $0 as? Mastodon.Entity.Emoji } } // [[Emoji]]
-                .flatMap { $0 } // [Emoji]
+                .flatMap { $0 }                                                 // [Emoji]
             let items: [AutoCompleteItem] = matchingEmojis.map { emoji in
                 AutoCompleteItem.emoji(emoji: emoji)
             }

Mastodon/Scene/Compose/ComposeViewController.swift

@@ -98,6 +98,7 @@ final class ComposeViewController: UIViewController, NeedsDependency {
     private(set) lazy var autoCompleteViewController: AutoCompleteViewController = {
         let viewController = AutoCompleteViewController()
         viewController.viewModel = AutoCompleteViewModel(context: context)
+        viewController.delegate = self
         viewModel.customEmojiViewModel
             .assign(to: \.value, on: viewController.viewModel.customEmojiViewModel)
             .store(in: &disposeBag)
@@ -1221,3 +1222,38 @@ extension ComposeViewController: ComposeStatusPollExpiresOptionCollectionViewCel
         viewModel.pollExpiresOptionAttribute.expiresOption.value = expiresOption
     }
 }
+
+// MARK: - AutoCompleteViewControllerDelegate
+extension ComposeViewController: AutoCompleteViewControllerDelegate {
+    func autoCompleteViewController(_ viewController: AutoCompleteViewController, didSelectItem item: AutoCompleteItem) {
+        guard let info = viewModel.autoCompleteInfo.value else { return }
+        let _replacedText: String? = {
+            var text: String
+            switch item {
+            case .hashtag(let hashtag):
+                text = "#" + hashtag.name
+            case .hashtagV1(let hashtagName):
+                text = "#" + hashtagName
+            case .account(let account):
+                text = "@" + account.acct
+            case .emoji(let emoji):
+                text = ":" + emoji.shortcode + ":"
+            case .bottomLoader:
+                return nil
+            }
+            text.append(" ")
+            return text
+        }()
+        guard let replacedText = _replacedText else { return }
+
+        guard let textEditorView = textEditorView() else { return }
+        let text = textEditorView.text
+        
+        do {
+            try textEditorView.updateByReplacing(range: NSRange(info.toHighlightEndRange, in: text), with: replacedText)
+            viewModel.autoCompleteInfo.value = nil
+        } catch {
+            os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: auto complete fail %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription)
+        }
+    }
+}