feat: 计划页对齐 android 并新增提交页

IosClientKit/Sources/FeaturePlan/PlanSubmitViewModel.swift

@@ -0,0 +1,56 @@
+import CoreDomain
+import CoreModel
+import Observation
+
+/// 提交计划页状态。
+public enum PlanSubmitUiState: Equatable {
+    case loading
+    case success(PlanSubmitData)
+    case error(String)
+}
+
+@MainActor
+@Observable
+public final class PlanSubmitViewModel {
+    public private(set) var uiState: PlanSubmitUiState = .loading
+    public var saving = false
+    public var saved = false
+
+    private let planUseCase: PlanUseCase
+    private let type: PlanType
+    private let periodKey: String
+    private var loadTask: Task<Void, Never>?
+
+    public init(planUseCase: PlanUseCase, type: PlanType, periodKey: String) {
+        self.planUseCase = planUseCase
+        self.type = type
+        self.periodKey = periodKey
+    }
+
+    public func load() {
+        loadTask?.cancel()
+        loadTask = Task { [weak self] in
+            guard let self else { return }
+            self.uiState = .loading
+            do {
+                for try await data in self.planUseCase.observePlanSubmit(type: self.type, periodKey: self.periodKey) {
+                    self.uiState = .success(data)
+                }
+            } catch is CancellationError {
+            } catch {
+                self.uiState = .error(error.localizedDescription)
+            }
+        }
+    }
+
+    public func save(content: String) {
+        guard !saving else { return }
+        saving = true
+        Task { [weak self] in
+            guard let self else { return }
+            try? await self.planUseCase.savePlan(type: self.type, periodKey: self.periodKey, content: content, attachments: [])
+            self.saving = false
+            self.saved = true
+        }
+    }
+}