//
//  TravelAlbumViewModelTests.swift
//  suixinkanTests
//

import XCTest
@testable import suixinkan

@MainActor
/// 旅拍相册 ViewModel 测试。
final class TravelAlbumEntryViewModelTests: XCTestCase {
    func testLoadAlbumsUpdatesListAndTotal() async {
        let api = TravelAlbumMockAPI()
        api.listResponse = TravelAlbumListResponse(total: 1, list: [TravelAlbum(id: 1, name: "A")])
        let viewModel = TravelAlbumEntryViewModel(currentScenicIdProvider: { 1 })

        await viewModel.loadAlbums(api: api)

        XCTAssertEqual(viewModel.albumTotal, 1)
        XCTAssertEqual(viewModel.albums.first?.name, "A")
    }

    func testPreShootRequiresSinglePrice() async {
        let api = TravelAlbumMockAPI()
        let viewModel = TravelAlbumEntryViewModel(currentScenicIdProvider: { 1 })
        var message = ""
        viewModel.onShowMessage = { message = $0 }

        await viewModel.confirmCreate(mode: .preShoot, freeCount: "", singlePrice: "", packagePrice: "", order: nil, api: api)

        XCTAssertEqual(message, "请输入单张照片价格")
        XCTAssertEqual(api.createRequests.count, 0)
    }

    func testPreOrderRequiresOrder() async {
        let api = TravelAlbumMockAPI()
        let viewModel = TravelAlbumEntryViewModel(currentScenicIdProvider: { 1 })
        var message = ""
        viewModel.onShowMessage = { message = $0 }

        await viewModel.confirmCreate(mode: .preOrder, freeCount: "", singlePrice: "", packagePrice: "", order: nil, api: api)

        XCTAssertEqual(message, "请选择绑定订单")
    }

    func testCreateSuccessRefreshesAlbums() async {
        let api = TravelAlbumMockAPI()
        api.createResponse = TravelAlbumCreateResponse(id: 9)
        api.listResponse = TravelAlbumListResponse(total: 1, list: [TravelAlbum(id: 9)])
        let date = Calendar(identifier: .gregorian).date(from: DateComponents(year: 2026, month: 7, day: 7))!
        let viewModel = TravelAlbumEntryViewModel(currentScenicIdProvider: { 1 }, dateProvider: { date })

        await viewModel.confirmCreate(mode: .preShoot, freeCount: "2", singlePrice: "12.5", packagePrice: "88", order: nil, api: api)

        XCTAssertEqual(api.createRequests.first?.name, "2026-07-07-001")
        XCTAssertEqual(api.createRequests.first?.type, 1)
        XCTAssertEqual(viewModel.albums.first?.id, 9)
        XCTAssertFalse(viewModel.isCreateSheetVisible)
    }

    func testOrderAlreadyBoundReloadsOrders() async {
        let api = TravelAlbumMockAPI()
        api.createError = APIError.serverCode(100001, "订单已关联")
        api.availableOrdersResponse = [TravelAlbumAvailableOrder(projectName: "新订单", orderNumber: "NO1")]
        let viewModel = TravelAlbumEntryViewModel(currentScenicIdProvider: { 1 })
        let order = TravelAlbumAvailableOrder(projectName: "项目", orderNumber: "NO0")

        await viewModel.confirmCreate(mode: .preOrder, freeCount: "", singlePrice: "", packagePrice: "", order: order, api: api)

        XCTAssertEqual(api.availableOrdersCallCount, 1)
        XCTAssertEqual(viewModel.availableOrders.first?.projectName, "新订单")
    }
}

@MainActor
/// 旅拍相册详情 ViewModel 测试。
final class TravelAlbumDetailViewModelTests: XCTestCase {
    func testRefreshLoadsInfoAndMaterials() async {
        let api = TravelAlbumMockAPI()
        api.infoResponse = TravelAlbum(id: 2, name: "详情")
        api.materialListResponses = [
            TravelAlbumListResponse(total: 2, list: []),
            TravelAlbumListResponse(total: 2, list: [TravelAlbumMaterial(id: 1), TravelAlbumMaterial(id: 2)]),
        ]
        let viewModel = TravelAlbumDetailViewModel(albumId: 2)

        await viewModel.refreshAll(api: api)

        XCTAssertEqual(viewModel.album?.name, "详情")
        XCTAssertEqual(viewModel.allPhotoCount, 2)
        XCTAssertEqual(viewModel.materials.count, 2)
    }

    func testTabAndSortTriggerMaterialRequests() async {
        let api = TravelAlbumMockAPI()
        api.materialListResponses = [
            TravelAlbumListResponse(total: 0, list: []),
            TravelAlbumListResponse(total: 0, list: []),
        ]
        let viewModel = TravelAlbumDetailViewModel(albumId: 2)

        await viewModel.selectTab(.purchased, api: api)
        await viewModel.setSortOption(.fileNameDesc, api: api)

        XCTAssertEqual(api.materialRequests.first?.isPurchased, 1)
        XCTAssertEqual(api.materialRequests.last?.orderBy, 4)
    }

    func testOnlyUnpurchasedMaterialCanBeSelected() {
        let viewModel = TravelAlbumDetailViewModel(albumId: 2)
        viewModel.toggleSelectionMode()
        viewModel.toggleMaterialSelection(TravelAlbumMaterial(id: 1, status: 2))
        XCTAssertTrue(viewModel.selectedMaterialIds.isEmpty)

        viewModel.toggleMaterialSelection(TravelAlbumMaterial(id: 1, status: 1))
        XCTAssertEqual(viewModel.selectedMaterialIds, [1])
    }

    func testDeleteAlbumCallsCallback() async {
        let api = TravelAlbumMockAPI()
        let viewModel = TravelAlbumDetailViewModel(albumId: 5)
        var deletedId = 0
        viewModel.onDeletedAlbum = { deletedId = $0 }

        await viewModel.deleteAlbum(api: api)

        XCTAssertEqual(api.deletedAlbumIds, [5])
        XCTAssertEqual(deletedId, 5)
    }
}

/// 有线传输 ViewModel 测试。
final class WiredCameraTransferViewModelTests: XCTestCase {
    func testDefaultDisconnectedStateDoesNotDependOnBusinessServices() {
        let viewModel = WiredCameraTransferViewModel(albumId: 1, albumTitle: "相册", headerPhone: "13800138000")
        var message = ""
        viewModel.onShowMessage = { message = $0 }

        XCTAssertEqual(viewModel.cameraStatusText, "未连接 USB")
        XCTAssertEqual(viewModel.tabCounts, [0, 0, 0])
        viewModel.showUIOnlyMessage()
        XCTAssertEqual(message, "仅同步 UI，暂未接入 OTG 传输")
    }
}

@MainActor
/// 旅拍相册 API 测试替身。
final class TravelAlbumMockAPI: TravelAlbumServing {
    struct MaterialRequest: Equatable {
        let userEquityTravelId: Int
        let page: Int
        let pageSize: Int
        let orderBy: Int
        let isPurchased: Int?
    }

    var availableOrdersResponse: [TravelAlbumAvailableOrder] = []
    var listResponse = TravelAlbumListResponse<TravelAlbum>()
    var createResponse = TravelAlbumCreateResponse(id: 0)
    var infoResponse = TravelAlbum()
    var materialListResponses: [TravelAlbumListResponse<TravelAlbumMaterial>] = []
    var mpCodeResponse = TravelAlbumMpCodeResponse(mpCodeOssUrl: "")
    var createError: Error?

    private(set) var availableOrdersCallCount = 0
    private(set) var createRequests: [TravelAlbumCreateRequest] = []
    private(set) var materialRequests: [MaterialRequest] = []
    private(set) var deletedAlbumIds: [Int] = []
    private(set) var deletedMaterialIds: [Int] = []

    func availableOrders() async throws -> [TravelAlbumAvailableOrder] {
        availableOrdersCallCount += 1
        return availableOrdersResponse
    }

    func create(_ request: TravelAlbumCreateRequest) async throws -> TravelAlbumCreateResponse {
        createRequests.append(request)
        if let createError { throw createError }
        return createResponse
    }

    func list(page: Int, pageSize: Int) async throws -> TravelAlbumListResponse<TravelAlbum> {
        listResponse
    }

    func info(id: Int) async throws -> TravelAlbum {
        infoResponse
    }

    func materialList(
        userEquityTravelId: Int,
        page: Int,
        pageSize: Int,
        orderBy: Int,
        isPurchased: Int?
    ) async throws -> TravelAlbumListResponse<TravelAlbumMaterial> {
        materialRequests.append(
            MaterialRequest(
                userEquityTravelId: userEquityTravelId,
                page: page,
                pageSize: pageSize,
                orderBy: orderBy,
                isPurchased: isPurchased
            )
        )
        if materialListResponses.isEmpty { return TravelAlbumListResponse() }
        return materialListResponses.removeFirst()
    }

    func deleteAlbum(id: Int) async throws {
        deletedAlbumIds.append(id)
    }

    func deleteMaterial(id: Int) async throws {
        deletedMaterialIds.append(id)
    }

    func mpCode(id: Int) async throws -> TravelAlbumMpCodeResponse {
        mpCodeResponse
    }
}