重构首页为单一集合视图并添加全部功能自定义

suixinkan/Features/Home/ViewModels/AllFunctionsViewModel.swift

@@ -0,0 +1,82 @@
+//
+//  AllFunctionsViewModel.swift
+//  suixinkan
+//
+
+import Foundation
+
+/// 全部功能页 ViewModel，管理常用应用与更多功能的增删与持久化。
+final class AllFunctionsViewModel {
+
+    private(set) var commonMenus: [HomeMenuItem] = []
+    private(set) var moreMenus: [HomeMenuItem] = []
+
+    var onStateChange: (() -> Void)?
+    private(set) var didCustomize = false
+
+    private let appStore: AppStore
+    private let commonMenuStore: HomeCommonMenuStore
+
+    init(
+        appStore: AppStore = .shared,
+        commonMenuStore: HomeCommonMenuStore = HomeCommonMenuStore()
+    ) {
+        self.appStore = appStore
+        self.commonMenuStore = commonMenuStore
+    }
+
+    /// 加载全部功能并按常用配置拆分。
+    func loadFunctions() {
+        let permissions = appStore.permissionItems()
+        let allMenus = HomeMenuCatalog.visibleMenus(from: permissions)
+        let accountScope = appStore.accountCachePrefix
+        let roleCode = appStore.roleCode
+        let savedURIs = commonMenuStore.savedCommonURIs(accountScope: accountScope, roleCode: roleCode)
+        let defaultURIs = HomeCommonMenuStore.defaultCommonURIs(from: permissions)
+        let commonURIs = savedURIs.isEmpty ? defaultURIs : savedURIs
+
+        let split = HomeCommonMenuStore.splitMenus(from: allMenus, commonURIs: commonURIs)
+        commonMenus = split.common
+        moreMenus = split.more
+
+        if savedURIs.isEmpty, !split.common.isEmpty {
+            commonMenuStore.saveCommonURIs(split.common.map(\.uri), accountScope: accountScope, roleCode: roleCode)
+        }
+
+        notifyStateChange()
+    }
+
+    /// 将菜单加入常用应用。
+    func addToCommon(_ menu: HomeMenuItem) {
+        guard !commonMenus.contains(where: { $0.uri == menu.uri }) else { return }
+        commonMenus.append(menu)
+        moreMenus.removeAll { $0.uri == menu.uri }
+        persistCommonMenus()
+        didCustomize = true
+        notifyStateChange()
+    }
+
+    /// 将菜单移出常用应用。
+    func removeFromCommon(_ menu: HomeMenuItem) {
+        guard commonMenus.contains(where: { $0.uri == menu.uri }) else { return }
+        commonMenus.removeAll { $0.uri == menu.uri }
+        if !moreMenus.contains(where: { $0.uri == menu.uri }) {
+            moreMenus.append(menu)
+        }
+        persistCommonMenus()
+        didCustomize = true
+        notifyStateChange()
+    }
+
+    private func persistCommonMenus() {
+        commonMenuStore.saveCommonURIs(
+            commonMenus.map(\.uri),
+            accountScope: appStore.accountCachePrefix,
+            roleCode: appStore.roleCode
+        )
+    }
+
+    private func notifyStateChange() {
+        onStateChange?()
+    }
+}