//
//  SearchTests.swift
//  AutoCatTests
//
//  Created by Selim Mustafaev on 22.02.2025.
//  Copyright © 2025 Selim Mustafaev. All rights reserved.
//

import Testing
import Mockable
import AutoCatCore
@testable import AutoCat

@MainActor
struct SearchTests {
    
    let apiServiceMock = MockApiServiceProtocol()
    let vehicleServiceMock = MockVehicleServiceProtocol()
    
    var viewModel: SearchViewModel
    
    init() {
        
        viewModel = SearchViewModel(
            apiService: apiServiceMock,
            vehicleService: vehicleServiceMock
        )
    }
    
    @Test("Initial load")
    func initialLoad() async {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .value(nil), pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
        
        await viewModel.onAppear()
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .value(nil), pageSize: .any)
            .called(.once)
        
        #expect(viewModel.vehicles == [.normal])
        #expect(viewModel.vehicleSections.count == 1)
        #expect(viewModel.searchText == "")
        #expect(viewModel.hud == nil)
    }
    
    @Test("Initial load error")
    func initialLoadError() async {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .value(nil), pageSize: .any)
            .willThrow(TestError.generic)
        
        await viewModel.onAppear()
        
        #expect(viewModel.vehicles.isEmpty)
        #expect(viewModel.hud == .error(TestError.generic))
    }
    
    @Test("Search")
    func search() async throws {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
        
        await viewModel.onAppear()
        
        viewModel.searchText = "test1"
        viewModel.searchText = "test2"
        try await Task.sleep(for: .milliseconds(700))
        viewModel.searchText = "test3"
        try await Task.sleep(for: .milliseconds(700))
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.exactly(3))
        
        #expect(viewModel.vehicles == [.normal])
        #expect(viewModel.vehicleSections.count == 1)
        #expect(viewModel.filter.searchString == "test3")
        #expect(viewModel.hud == nil)
    }
    
    @Test("Search error")
    func searchError() async throws {
        
        var filterWithString = Filter()
        filterWithString.searchString = "test"
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willThrow(TestError.generic)
        
        await viewModel.onAppear()
        viewModel.searchText = "test"
        try await Task.sleep(for: .milliseconds(600))
        
        #expect(viewModel.vehicles.isEmpty)
        #expect(viewModel.hud == .error(TestError.generic))
    }
    
    @Test("Pagination")
    func pagination() async {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: []))
        
        await viewModel.onAppear()
        await viewModel.loadMoreData()
        await viewModel.loadMoreData()
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.exactly(3))
        
        #expect(viewModel.vehicles.count == 2)
        #expect(viewModel.hasMoreData == false)
        #expect(viewModel.hud == nil)
    }
    
    @Test("Pagination error")
    func paginationError() async {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willThrow(TestError.generic)
        
        await viewModel.onAppear()
        await viewModel.loadMoreData()
        await viewModel.loadMoreData()
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.exactly(3))
        
        #expect(viewModel.vehicles.count == 2)
        #expect(viewModel.hasMoreData == false)
        #expect(viewModel.hud == .error(TestError.generic))
    }
    
    @Test("Update vehicle")
    func updateVehicle() async {
        
        let updatedVehicle: VehicleDto = .normal
            .addEvent(.valid)
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
        
        given(vehicleServiceMock)
            .updateSearch(number: .value(VehicleDto.normal.number))
            .willReturn((updatedVehicle, []))
        
        await viewModel.onAppear()
        await viewModel.updateVehicle(.normal)
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.once)
        
        verify(vehicleServiceMock)
            .updateSearch(number: .any)
            .called(.once)
        
        #expect(viewModel.vehicles.first?.events.isEmpty == false)
        #expect(viewModel.hud == nil)
    }
    
    @Test("Update vehicle error")
    func updateVehicleError() async {
        
        let updatedVehicle: VehicleDto = .normal
            .addEvent(.valid)
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
        
        given(vehicleServiceMock)
            .updateSearch(number: .value(VehicleDto.normal.number))
            .willReturn((updatedVehicle, [TestError.generic]))
        
        await viewModel.onAppear()
        await viewModel.updateVehicle(.normal)
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.once)
        
        verify(vehicleServiceMock)
            .updateSearch(number: .any)
            .called(.once)
        
        #expect(viewModel.vehicles.first?.events.isEmpty == true)
        
        if case .message(_, _) = viewModel.hud {} else {
            Issue.record("hud must be in .message state")
        }
    }
      
    @Test("Update vehicle error 2")
    func updateVehicleError2() async {
        
        given(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .willReturn(PagedResponse(items: [VehicleDto.normal]))
        
        given(vehicleServiceMock)
            .updateSearch(number: .value(VehicleDto.normal.number))
            .willThrow(TestError.generic)
        
        await viewModel.onAppear()
        await viewModel.updateVehicle(.normal)
        
        verify(apiServiceMock)
            .getVehicles(with: .any, pageToken: .any, pageSize: .any)
            .called(.once)
        
        verify(vehicleServiceMock)
            .updateSearch(number: .any)
            .called(.once)
        
        #expect(viewModel.vehicles.first?.events.isEmpty == true)
        #expect(viewModel.hud == .error(TestError.generic))
    }
}