//
//  CameraTransferPipelineTests.swift
//  suixinkanTests
//
//  Created by Codex on 2026/6/29.
//

import XCTest
@testable import suixinkan

@MainActor
/// 相机传输管道测试，使用 Mock 相机与上传 Sink。
final class CameraTransferPipelineTests: XCTestCase {
    /// 测试新照片下载后触发上传 Sink。
    func testNewAssetTriggersUploadSink() async {
        let camera = MockCameraService()
        let sink = MockUploadSink()
        let pipeline = CameraTransferPipeline(cameraService: camera)
        pipeline.configure(uploadSink: sink, uploadEnabled: true)

        let asset = CameraAsset(id: "ptp_1", filename: "DSC_001.JPG", fileSize: 1024)
        let tempURL = FileManager.default.temporaryDirectory.appendingPathComponent("DSC_001.JPG")
        try? Data(repeating: 0xFF, count: 8).write(to: tempURL)

        camera.onNewAsset?(asset)
        try? await Task.sleep(nanoseconds: 300_000_000)

        XCTAssertEqual(sink.uploadCount, 1)
        try? FileManager.default.removeItem(at: tempURL)
    }
}

@MainActor
private final class MockCameraService: CameraServiceProtocol {
    let brand: CameraBrand = .sony
    var connectionState: CameraConnectionState = .connected(deviceName: "Mock")
    var onConnectionStateChange: ((CameraConnectionState) -> Void)?
    var onNewAsset: ((CameraAsset) -> Void)?

    func connect() async {}
    func disconnect() async {}

    func listAssets() async throws -> [CameraAsset] {
        []
    }

    func downloadAsset(_ asset: CameraAsset) async throws -> URL {
        let url = FileManager.default.temporaryDirectory.appendingPathComponent(asset.filename)
        if !FileManager.default.fileExists(atPath: url.path) {
            try Data(repeating: 0xFF, count: 8).write(to: url)
        }
        return url
    }
}

@MainActor
private final class MockUploadSink: CameraAssetUploadSink {
    var uploadCount = 0

    func upload(
        localURL: URL,
        fileName: String,
        fileType: Int,
        progress: @escaping @Sendable (Int) -> Void
    ) async throws -> String {
        uploadCount += 1
        progress(100)
        return "https://cdn/mock/\(fileName)"
    }
}