Initial commit: suixinkan_ios UIKit rewrite project.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan_ios/Features/OperatingArea/ViewModels/OperatingAreaViewModel.swift

@@ -0,0 +1,153 @@
+//
+//  OperatingAreaViewModel.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/6/25.
+//
+
+import Foundation
+
+@MainActor
+/// 运营区域 ViewModel，负责角色分流、围栏加载、解析和错误状态管理。
+final class OperatingAreaViewModel {
+    var onChange: (() -> Void)?
+    private(set) var mode: OperatingAreaEntryMode? { didSet { onChange?() } }
+    private(set) var loading = false { didSet { onChange?() } }
+    private(set) var items: [OperatingAreaItem] = [] { didSet { onChange?() } }
+    private(set) var fenceRings: [OperatingFenceRing] = [] { didSet { onChange?() } }
+    private(set) var blockReason: OperatingAreaBlockReason? { didSet { onChange?() } }
+    private(set) var errorMessage: String? { didSet { onChange?() } }
+
+    /// 按当前账号和角色刷新运营区域。
+    func reload(
+        api: any OperatingAreaServing,
+        accountContext: AccountContext,
+        permissionContext: PermissionContext
+    ) async {
+        guard !loading else { return }
+        guard let nextMode = resolveMode(accountContext: accountContext, permissionContext: permissionContext) else {
+            return
+        }
+
+        mode = nextMode
+        loading = true
+        errorMessage = nil
+        blockReason = nil
+        defer { loading = false }
+
+        do {
+            let response: ListPayload<OperatingAreaItem>
+            switch nextMode {
+            case .storeAdmin(let storeId):
+                response = try await api.storeBusinessArea(storeId: storeId)
+            case .scenicAdmin(let scenicId):
+                response = try await api.scenicAdminBusinessArea(scenicId: scenicId)
+            }
+            apply(items: response.list, mode: nextMode)
+        } catch {
+            resetLoadedData()
+            let message = error.localizedDescription
+            errorMessage = message
+            blockReason = .backendMessage(message)
+        }
+    }
+
+    /// 根据当前上下文解析运营区域入口模式。
+    @discardableResult
+    func resolveMode(accountContext: AccountContext, permissionContext: PermissionContext) -> OperatingAreaEntryMode? {
+        let roleName = permissionContext.currentRole?.name.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        let lowercaseRoleName = roleName.lowercased()
+        let isStoreRole = roleName.contains("店铺") || roleName.contains("门店") || lowercaseRoleName.contains("store")
+        let isScenicRole = roleName.contains("景区") || lowercaseRoleName.contains("scenic")
+
+        if isStoreRole {
+            guard let storeId = accountContext.currentStore?.id, storeId > 0 else {
+                setBlocked(.missingStore)
+                return nil
+            }
+            mode = .storeAdmin(storeId: storeId)
+            blockReason = nil
+            return mode
+        }
+
+        if isScenicRole {
+            guard let scenicId = accountContext.currentScenic?.id, scenicId > 0 else {
+                setBlocked(.missingScenic)
+                return nil
+            }
+            mode = .scenicAdmin(scenicId: scenicId)
+            blockReason = nil
+            return mode
+        }
+
+        if let storeId = accountContext.currentStore?.id, storeId > 0 {
+            mode = .storeAdmin(storeId: storeId)
+            blockReason = nil
+            return mode
+        }
+
+        if let scenicId = accountContext.currentScenic?.id, scenicId > 0 {
+            mode = .scenicAdmin(scenicId: scenicId)
+            blockReason = nil
+            return mode
+        }
+
+        setBlocked(.unsupportedRole)
+        return nil
+    }
+
+    /// 根据状态生成统计展示。
+    var summary: (areaCount: Int, fenceCount: Int, currentStoreFenceCount: Int) {
+        (
+            areaCount: items.count,
+            fenceCount: fenceRings.count,
+            currentStoreFenceCount: fenceRings.filter(\.isCurrentStore).count
+        )
+    }
+
+    /// 当前页面标题。
+    var title: String {
+        mode?.title ?? "运营区域"
+    }
+
+    private func apply(items: [OperatingAreaItem], mode: OperatingAreaEntryMode) {
+        self.items = items
+        if items.isEmpty {
+            fenceRings = []
+            blockReason = .emptyAreaList
+            return
+        }
+
+        let currentStoreId: Int? = {
+            guard case .storeAdmin(let storeId) = mode else { return nil }
+            return storeId
+        }()
+
+        let parsed = items.flatMap { item -> [OperatingFenceRing] in
+            OperatingAreaParser.parseToRings(item.businessMapArea).enumerated().compactMap { index, points in
+                guard points.count >= 3 else { return nil }
+                return OperatingFenceRing(
+                    itemId: item.id,
+                    regionName: item.name,
+                    points: points,
+                    isCurrentStore: currentStoreId == item.id,
+                    ringIndex: index
+                )
+            }
+        }
+        fenceRings = parsed
+        blockReason = parsed.isEmpty ? .noParsableFenceData : nil
+    }
+
+    private func setBlocked(_ reason: OperatingAreaBlockReason) {
+        resetLoadedData()
+        blockReason = reason
+        errorMessage = nil
+        loading = false
+    }
+
+    private func resetLoadedData() {
+        items = []
+        fenceRings = []
+    }
+}