Initial commit: suixinkan_ios UIKit rewrite project.

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

suixinkan_ios/Features/WithdrawalAudit/ViewModels/WithdrawalAuditViewModel.swift

@@ -0,0 +1,138 @@
+//
+//  WithdrawalAuditViewModel.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/6/25.
+//
+
+import Foundation
+
+/// 提现审核筛选项，按提现记录的状态文案聚合审核视角。
+enum WithdrawalAuditFilter: String, CaseIterable, Identifiable {
+    case all
+    case processing
+    case completed
+
+    var id: String { rawValue }
+
+    /// 筛选项展示标题。
+    var title: String {
+        switch self {
+        case .all: "全部"
+        case .processing: "处理中"
+        case .completed: "已完成"
+        }
+    }
+}
+
+@MainActor
+/// 提现审核 ViewModel，负责提现记录分页、状态筛选和失败状态清理。
+final class WithdrawalAuditViewModel {
+    var onChange: (() -> Void)?
+    var records: [WalletWithdrawRecord] = [] { didSet { onChange?() } }
+    var selectedFilter: WithdrawalAuditFilter = .all { didSet { onChange?() } }
+    var isLoading = false { didSet { onChange?() } }
+    var isLoadingMore = false { didSet { onChange?() } }
+    var loadFailed = false { didSet { onChange?() } }
+    var loadFailureReason: String? { didSet { onChange?() } }
+    var errorMessage: String? { didSet { onChange?() } }
+
+    private let pageSize = 10
+    private var page = 1
+    private var total = 0
+
+    /// 当前筛选下的提现记录。
+    var filteredRecords: [WalletWithdrawRecord] {
+        filteredRecords(for: selectedFilter)
+    }
+
+    /// 是否还有下一页。
+    var hasMore: Bool {
+        records.count < total
+    }
+
+    /// 记录总数，优先使用服务端 total。
+    var totalCount: Int {
+        max(total, records.count)
+    }
+
+    /// 处理中数量。
+    var processingCount: Int {
+        filteredRecords(for: .processing).count
+    }
+
+    /// 已完成数量。
+    var completedCount: Int {
+        filteredRecords(for: .completed).count
+    }
+
+    /// 按指定筛选返回提现记录。
+    func filteredRecords(for filter: WithdrawalAuditFilter) -> [WalletWithdrawRecord] {
+        switch filter {
+        case .all:
+            return records
+        case .processing:
+            return records.filter { record in
+                let status = record.statusLabel
+                return status.contains("中") || status.contains("待")
+            }
+        case .completed:
+            return records.filter { record in
+                let status = record.statusLabel
+                return status.contains("完成") || status.contains("到账") || status.contains("通过")
+            }
+        }
+    }
+
+    /// 切换筛选项，仅影响本地展示。
+    func selectFilter(_ filter: WithdrawalAuditFilter) {
+        selectedFilter = filter
+    }
+
+    /// 重新加载第一页提现审核记录。
+    func reload(api: WalletServing) async {
+        isLoading = true
+        loadFailed = false
+        loadFailureReason = nil
+        errorMessage = nil
+        defer { isLoading = false }
+
+        do {
+            let response = try await api.walletWithdrawList(page: 1, pageSize: pageSize)
+            records = response.item
+            total = response.total
+            page = 1
+        } catch {
+            clearRecords()
+            loadFailed = true
+            loadFailureReason = error.localizedDescription
+            errorMessage = error.localizedDescription
+        }
+    }
+
+    /// 加载下一页提现审核记录。
+    func loadMore(api: WalletServing) async {
+        guard hasMore, !isLoadingMore, !isLoading else { return }
+        isLoadingMore = true
+        errorMessage = nil
+        defer { isLoadingMore = false }
+
+        let nextPage = page + 1
+        do {
+            let response = try await api.walletWithdrawList(page: nextPage, pageSize: pageSize)
+            records += response.item
+            total = response.total
+            page = nextPage
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+
+    /// 清空旧提现审核数据，避免失败后残留上一账号或上一状态记录。
+    private func clearRecords() {
+        records = []
+        page = 1
+        total = 0
+        isLoadingMore = false
+    }
+}