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TUIKit/TUICallKit/TUICallKit-Swift/View/Component/InviteUser/SelectGroupMemberViewController.swift

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+//
+//  SelectGroupMemberViewController.swift
+//  TUICallKit
+//
+//  Created by vincepzhang on 2023/5/12.
+//
+
+import Foundation
+import TUICore
+
+class SelectGroupMemberViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
+    
+    let viewModel = SelectGroupMemberViewModel()
+    let groupMemberObserver = Observer()
+    
+    lazy var navigationView: UIView = {
+        let navigationView = UIView()
+        navigationView.backgroundColor = TUICoreDefineConvert.getTUICoreDynamicColor(colorKey: "head_bg_gradient_start_color",
+                                                                                     defaultHex: "#EBF0F6")
+        return navigationView
+    }()
+    
+    lazy var leftBtn: UIButton = {
+        let leftBtn = UIButton(type: .custom)
+        leftBtn.addTarget(self, action: #selector(goBack), for: .touchUpInside)
+        let defaultImage = TUICallKitCommon.getBundleImage(name: "icon_nav_back") ?? UIImage()
+        let leftBtnImage = TUICoreDefineConvert.getTUIDynamicImage(imageKey: "icon_nav_back_image",
+                                                                   module: TUIThemeModule.calling,
+                                                                   defaultImage: defaultImage)
+        leftBtn.setImage(leftBtnImage, for: .normal)
+        return leftBtn
+    }()
+    
+    lazy var centerLabel: UILabel = {
+        let centerLabel = UILabel(frame: CGRect.zero)
+        centerLabel.font = UIFont.boldSystemFont(ofSize: 16.0)
+        centerLabel.textAlignment = .center
+        centerLabel.text = TUICallKitLocalize(key: "TUICallKit.Recents.addUser")
+        centerLabel.textColor = TUICoreDefineConvert.getTUICallKitDynamicColor(colorKey: "callkit_nav_title_text_color",
+                                                                               defaultHex: "#000000")
+        return centerLabel
+    }()
+    
+    lazy var rightBtn: UIButton = {
+        let rightBtn = UIButton(type: .system)
+        rightBtn.addTarget(self, action: #selector(addUser), for: .touchUpInside)
+        rightBtn.titleLabel?.font = UIFont.systemFont(ofSize: 17.0)
+        rightBtn.setTitle(TUICallKitLocalize(key: "TUICallKit.determine"), for: .normal)
+        rightBtn.setTitleColor(TUICoreDefineConvert.getTUICallKitDynamicColor(colorKey: "callkit_nav_item_title_text_color",
+                                                                              defaultHex: "#000000"), for: .normal)
+        return rightBtn
+    }()
+    
+    let selectTableView: UITableView = {
+        let selectTableView = UITableView(frame: CGRect.zero)
+        selectTableView.backgroundColor = TUICoreDefineConvert.getTUICallKitDynamicColor(colorKey: "callkit_select_group_member_bg_color",
+                                                                                         defaultHex: "#F2F2F2")
+        return selectTableView
+    }()
+    
+    // MARK: UI Specification Processing
+    override func viewDidLoad() {
+        constructViewHierarchy()
+        activateConstraints()
+        bindInteraction()
+        registerObserve()
+    }
+    
+    func constructViewHierarchy() {
+        view.addSubview(navigationView)
+        view.addSubview(leftBtn)
+        view.addSubview(leftBtn)
+        view.addSubview(centerLabel)
+        view.addSubview(rightBtn)
+        view.addSubview(selectTableView)
+    }
+    
+    func activateConstraints() {
+        navigationView.snp.makeConstraints({ make in
+            make.leading.trailing.top.equalToSuperview()
+            make.height.equalTo(StatusBar_Height + 44)
+        })
+        leftBtn.snp.makeConstraints({ make in
+            make.leading.equalToSuperview().offset(12)
+            make.centerY.equalTo(centerLabel)
+            make.width.height.equalTo(30)
+        })
+        centerLabel.snp.makeConstraints({ make in
+            make.top.equalToSuperview().offset(StatusBar_Height)
+            make.centerX.equalToSuperview()
+            make.width.equalTo(Screen_Width * 2 / 3)
+            make.height.equalTo(44)
+        })
+        rightBtn.snp.makeConstraints({ make in
+            make.trailing.equalToSuperview().offset(-12)
+            make.centerY.equalTo(centerLabel)
+        })
+        selectTableView.snp.makeConstraints({ make in
+            make.top.equalTo(centerLabel.snp.bottom)
+            make.leading.trailing.bottom.equalToSuperview()
+        })
+    }
+    
+    func bindInteraction() {
+        selectTableView.dataSource = self
+        selectTableView.delegate = self
+        selectTableView.register(SelectGroupMemberCell.self, forCellReuseIdentifier: NSStringFromClass(SelectGroupMemberCell.self))
+    }
+    
+    func registerObserve() {
+        viewModel.groupMemberList.addObserver(groupMemberObserver) {[weak self] _, _ in
+            guard let self = self else { return }
+            self.selectTableView.reloadData()
+        }
+    }
+    
+    // MARK: Action
+    @objc func addUser() {
+        var userIds: [String] = []
+        for state in viewModel.groupMemberStateOrigin {
+            if state.value {
+                continue
+            }
+            if let isSelect = viewModel.groupMemberState[state.key] {
+                if isSelect {
+                    userIds.append(state.key)
+                }
+            }
+        }
+        
+        if userIds.count + TUICallState.instance.remoteUserList.value.count >=  MAX_USER {
+            TUITool.makeToast(TUICallKitLocalize(key: "TUICallKit.User.Exceed.Limit"))
+            return
+        }
+        
+        CallEngineManager.instance.inviteUser(userIds: userIds)
+        dismiss(animated: true)
+    }
+    
+    @objc func goBack() {
+        dismiss(animated: true)
+    }
+    
+}
+
+extension SelectGroupMemberViewController {
+    
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return viewModel.groupMemberList.value.count + 1
+    }
+    
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        guard let cell = tableView.dequeueReusableCell(withIdentifier: NSStringFromClass(SelectGroupMemberCell.self),
+                                                       for: indexPath) as? SelectGroupMemberCell else {
+            return UITableViewCell()
+        }
+        
+        if indexPath.row == 0 {
+            cell.configCell(user: viewModel.selfUser.value, isSelect: true)
+        } else {
+            let user = viewModel.groupMemberList.value[indexPath.row - 1]
+            let isSelect = viewModel.groupMemberState[user.id.value]
+            cell.configCell(user: user, isSelect: isSelect ?? false)
+        }
+        
+        return cell
+    }
+    
+    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
+        return 60
+    }
+    
+    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        if indexPath.row == 0 {
+            return
+        }
+        
+        let user = viewModel.groupMemberList.value[indexPath.row - 1]
+        if viewModel.groupMemberStateOrigin[user.id.value] ?? false {
+            return
+        }
+        
+        if viewModel.groupMemberState[user.id.value] ?? false {
+            viewModel.groupMemberState[user.id.value] = false
+        } else {
+            viewModel.groupMemberState[user.id.value] = true
+        }
+        
+        selectTableView.reloadData()
+    }
+}