import CoreCommon
import CoreDomain
import CoreModel

/// Fake 仓库实现（骨架阶段返回假数据，后续替换为 OfflineFirst 实现）。
public struct FakeHomeRepository: HomeRepository {
    public init() {}

    public func observeHome() -> AsyncThrowingStream<HomeData, Error> {
        AsyncThrowingStream { continuation in
            let task = Task {
                do {
                    // 模拟网络延迟。
                    try await Task.sleep(for: .milliseconds(400))
                    try Task.checkCancellation()
                    Logger.info("FakeHomeRepository 返回假数据")
                    continuation.yield(Self.fakeData)
                    continuation.finish()
                } catch {
                    continuation.finish(throwing: error)
                }
            }
            continuation.onTermination = { _ in
                task.cancel()
            }
        }
    }

    private static let fakeData = HomeData(
        id: "home-1",
        greeting: "早上好，Andy",
        summary: "今日已完成 2 / 4",
        habits: [
            Habit(id: "habit-1", title: "晨跑 5 公里", detail: "保持运动习惯", isCheckedInToday: true, streakDays: 12),
            Habit(id: "habit-2", title: "阅读 30 分钟", detail: "每天进步一点", isCheckedInToday: true, streakDays: 8),
            Habit(id: "habit-3", title: "喝水 8 杯", detail: "健康补水", isCheckedInToday: false, streakDays: 0),
            Habit(id: "habit-4", title: "写日记", detail: "记录今日所思", isCheckedInToday: false, streakDays: 3),
        ]
    )
}