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suixinkan/Features/Home/Services/HomeCommonMenuStore.swift

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+//
+//  HomeCommonMenuStore.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/6/22.
+//
+
+import Foundation
+
+/// 首页常用应用存储服务，负责按当前权限过滤和持久化常用 URI。
+struct HomeCommonMenuStore {
+    static let defaultStorageKey = "home.common.menu.uris"
+    static let defaultBaselineKey = "home.common.menu.android.baseline.v2"
+
+    private let defaults: UserDefaults
+    private let storageKey: String
+    private let baselineKey: String
+
+    /// 初始化常用应用存储服务，并允许测试注入独立 UserDefaults。
+    init(
+        defaults: UserDefaults = .standard,
+        storageKey: String = Self.defaultStorageKey,
+        baselineKey: String = Self.defaultBaselineKey
+    ) {
+        self.defaults = defaults
+        self.storageKey = storageKey
+        self.baselineKey = baselineKey
+    }
+
+    /// 读取常用 URI，首次使用时写入默认值，并始终按当前权限过滤。
+    func load(menuItems: [HomeMenuItem]) -> [String] {
+        let availableURIs = Set(menuItems.map(\.uri))
+        if !defaults.bool(forKey: baselineKey) {
+            let defaults = defaultCommonURIs(availableURIs: availableURIs)
+            save(defaults)
+            self.defaults.set(true, forKey: baselineKey)
+            return defaults
+        }
+
+        let saved = defaults.stringArray(forKey: storageKey) ?? []
+        let filtered = unique(saved.compactMap { uri -> String? in
+            let resolved = HomeMenuRouter.canonicalURI(for: uri, availableURIs: availableURIs)
+            return availableURIs.contains(resolved) ? resolved : nil
+        })
+        save(filtered)
+        return filtered
+    }
+
+    /// 将指定 URI 加入常用应用，按别名避免重复添加。
+    func add(_ uri: String, current: [String], menuItems: [HomeMenuItem]) -> [String] {
+        let availableURIs = Set(menuItems.map(\.uri))
+        let resolved = HomeMenuRouter.canonicalURI(for: uri, availableURIs: availableURIs)
+        guard availableURIs.contains(resolved) else { return current }
+        guard !current.contains(where: { HomeMenuRouter.menuAliasKey(for: $0) == HomeMenuRouter.menuAliasKey(for: resolved) }) else {
+            return current
+        }
+        let next = current + [resolved]
+        save(next)
+        return next
+    }
+
+    /// 从常用应用中移除指定 URI，同义 URI 会一起移除。
+    func remove(_ uri: String, current: [String]) -> [String] {
+        let aliasKey = HomeMenuRouter.menuAliasKey(for: uri)
+        let next = current.filter { HomeMenuRouter.menuAliasKey(for: $0) != aliasKey }
+        save(next)
+        return next
+    }
+
+    /// 保存常用 URI。
+    func save(_ uris: [String]) {
+        defaults.set(unique(uris), forKey: storageKey)
+    }
+
+    /// 生成默认常用应用 URI。
+    private func defaultCommonURIs(availableURIs: Set<String>) -> [String] {
+        let preferred = ["registration_invitation", "location_report", "pm_manager", "pm"]
+        return unique(preferred.compactMap { uri in
+            let resolved = HomeMenuRouter.canonicalURI(for: uri, availableURIs: availableURIs)
+            return availableURIs.contains(resolved) ? resolved : nil
+        })
+    }
+
+    /// 按 URI 别名去重，保留首次出现的 URI。
+    private func unique(_ uris: [String]) -> [String] {
+        var seen = Set<String>()
+        return uris.filter { uri in
+            seen.insert(HomeMenuRouter.menuAliasKey(for: uri)).inserted
+        }
+    }
+}