// 
// Copyright 2022 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import XCTest
@testable import Element

class UserSessionDetailsViewModelTests: XCTestCase {
    
    func test_whenSessionNameAndLastSeenIPNil_viewStateCorrect() {
        let userSessionInfo = createUserSessionInfo(sessionId: "session",
                                                    sessionName: nil,
                                                    lastSeenIP: nil)
        
        var sessionItems = [UserSessionDetailsSectionItemViewData]()
        sessionItems.append(sessionIdItem(sessionId: userSessionInfo.sessionId))
        
        var sections = [UserSessionDetailsSectionViewData]()
        sections.append(UserSessionDetailsSectionViewData(header: VectorL10n.userSessionDetailsSessionSectionHeader,
                                                          footer: VectorL10n.userSessionDetailsSessionSectionFooter,
                                                          items: sessionItems))
        let expectedModel = UserSessionDetailsViewState(sections: sections)
        let sut = UserSessionDetailsViewModel(userSessionInfo: userSessionInfo)
        
        XCTAssertEqual(sut.state, expectedModel)
    }
    
    func test_whenSessionNameNotNilLastSeenIPNil_viewStateCorrect() {
        let userSessionInfo = createUserSessionInfo(sessionId: "session",
                                                    sessionName: "session name",
                                                    lastSeenIP: nil)
        
        var sessionItems = [UserSessionDetailsSectionItemViewData]()
        sessionItems.append(sessionNameItem(sessionName: "session name"))
        sessionItems.append(sessionIdItem(sessionId: userSessionInfo.sessionId))
        
        var sections = [UserSessionDetailsSectionViewData]()
        sections.append(UserSessionDetailsSectionViewData(header: VectorL10n.userSessionDetailsSessionSectionHeader,
                                                          footer: VectorL10n.userSessionDetailsSessionSectionFooter,
                                                          items: sessionItems))
        
        let expectedModel = UserSessionDetailsViewState(sections: sections)
        let sut = UserSessionDetailsViewModel(userSessionInfo: userSessionInfo)
        
        XCTAssertEqual(sut.state, expectedModel)
    }
    
    func test_whenUserSessionInfoContainsAllValues_viewStateCorrect() {
        let userSessionInfo = createUserSessionInfo(sessionId: "session",
                                                    sessionName: "session name",
                                                    lastSeenIP: "0.0.0.0")
        
        var sessionItems = [UserSessionDetailsSectionItemViewData]()
        sessionItems.append(sessionNameItem(sessionName: "session name"))
        sessionItems.append(sessionIdItem(sessionId: userSessionInfo.sessionId))
        
        var sections = [UserSessionDetailsSectionViewData]()
        sections.append(UserSessionDetailsSectionViewData(header: VectorL10n.userSessionDetailsSessionSectionHeader,
                                                          footer: VectorL10n.userSessionDetailsSessionSectionFooter,
                                                          items: sessionItems))
        
        var deviceSectionItems = [UserSessionDetailsSectionItemViewData]()
        deviceSectionItems.append(UserSessionDetailsSectionItemViewData(title: VectorL10n.userSessionDetailsDeviceIpAddress,
                                                                        value: "0.0.0.0"))
        sections.append(UserSessionDetailsSectionViewData(header: VectorL10n.userSessionDetailsDeviceSectionHeader,
                                                          footer: nil,
                                                          items: deviceSectionItems))
        
        let expectedModel = UserSessionDetailsViewState(sections: sections)
        let sut = UserSessionDetailsViewModel(userSessionInfo: userSessionInfo)
        
        XCTAssertEqual(sut.state, expectedModel)
    }
    
    private func createUserSessionInfo(sessionId: String,
                                       sessionName: String?,
                                       deviceType: DeviceType = .mobile,
                                       isVerified: Bool = false,
                                       lastSeenIP: String?,
                                       lastSeenTimestamp: TimeInterval = Date().timeIntervalSince1970) -> UserSessionInfo {
        UserSessionInfo(sessionId: sessionId,
                        sessionName: sessionName,
                        deviceType: deviceType,
                        isVerified: isVerified,
                        lastSeenIP: lastSeenIP,
                        lastSeenTimestamp: lastSeenTimestamp)
        
    }
    
    private func sessionNameItem(sessionName: String) -> UserSessionDetailsSectionItemViewData {
        UserSessionDetailsSectionItemViewData(title: VectorL10n.userSessionDetailsSessionName,
                                              value: sessionName)
    }
    
    private func sessionIdItem(sessionId: String) -> UserSessionDetailsSectionItemViewData {
        UserSessionDetailsSectionItemViewData(title: VectorL10n.keyVerificationManuallyVerifyDeviceIdTitle,
                                              value: sessionId)
    }
}