import FileUtility
import RemoteSecretProtocolTestHelper
import XCTest
@testable import ThreemaFramework

final class WallpaperStoreTest: XCTestCase {

    // MARK: - Setup

    private let wallpaperStore = WallpaperStore(fileUtility: FileUtility())

    private var conversation1: ConversationEntity!
    private var conversationID1: NSManagedObjectID!

    private var conversation2: ConversationEntity!
    private var conversationID2: NSManagedObjectID!
    
    private var testDatabase: TestDatabase!
    private var entityManager: EntityManager!
    
    private let testImageURL1 = Bundle(for: WallpaperStoreTest.self)
        .url(forResource: "Bild-8", withExtension: "png")!
    private let testImageURL2 = Bundle(for: WallpaperStoreTest.self)
        .url(forResource: "Bild-8", withExtension: "png")!
    private var testImage1: UIImage!
    private var testImage2: UIImage!

    override func setUpWithError() throws {
        AppGroup.setGroupID("group.ch.threema")

        testDatabase = TestDatabase()
        entityManager = testDatabase.entityManager

        // Workaround to ensure remote secret is initialized
        AppLaunchManager.shared.setRemoteSecretManager(testDatabase.remoteSecretManagerMock)

        conversation1 = createConversation(
            id: "abcdefgh",
            unreadMessageCount: 0,
            category: .default,
            visibility: .default
        )
        conversationID1 = conversation1.objectID
        
        conversation2 = createConversation(
            id: "abcdefg2",
            unreadMessageCount: 0,
            category: .default,
            visibility: .default
        )
        conversationID2 = conversation2.objectID
        
        let data1 = try! Data(contentsOf: testImageURL1)
        testImage1 = UIImage(data: data1)!
        let data2 = try! Data(contentsOf: testImageURL2)
        testImage2 = UIImage(data: data2)!
    }

    private func createConversation(
        id: String,
        unreadMessageCount: Int,
        category: ConversationEntity.Category,
        visibility: ConversationEntity.Visibility
    ) -> ConversationEntity {
        var contact: ContactEntity!
        var conversation: ConversationEntity!

        let databasePreparer = testDatabase.preparer
        databasePreparer.save {
            contact = databasePreparer.createContact(publicKey: Data([1]), identity: id)

            conversation = databasePreparer.createConversation(
                typing: false,
                unreadMessageCount: unreadMessageCount,
                category: category,
                visibility: visibility
            ) { conversation in
                conversation.contact = contact
            }
        }

        return conversation
    }

    override func tearDownWithError() throws {
        wallpaperStore.deleteAllCustom()
    }

    // MARK: - Tests
    
    func testSaveDefaultWallpaper() {
        // Arrange & Act
        wallpaperStore.saveDefaultWallpaper(testImage1)
        
        // Assert
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage1.pngData())
    }
    
    func testSaveWallpaper() {
        // Arrange
        wallpaperStore.saveDefaultWallpaper(testImage1)
        
        // Act
        wallpaperStore.saveWallpaper(testImage2, for: conversationID1)
        
        // Assert
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID2)?.pngData(), testImage1.pngData())
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage2.pngData())
    }
    
    func testHasCustomWallpaper() {
        // Arrange & Act
        wallpaperStore.saveDefaultWallpaper(testImage1)
        wallpaperStore.saveWallpaper(testImage2, for: conversationID1)
        
        // Assert
        XCTAssertTrue(wallpaperStore.hasCustomWallpaper(for: conversationID1))
        XCTAssertFalse(wallpaperStore.hasCustomWallpaper(for: conversationID2))
    }
    
    func testDeleteCustomWallpaper() {
        // Arrange
        wallpaperStore.saveDefaultWallpaper(testImage1)
        
        // Act
        wallpaperStore.saveWallpaper(testImage2, for: conversationID1)

        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage2.pngData())

        wallpaperStore.deleteWallpaper(for: conversationID1)
        
        // Assert
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID2)?.pngData(), testImage1.pngData())
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage1.pngData())
    }
    
    func testDeleteAllCustomWallpaper() {
        // Arrange
        wallpaperStore.saveDefaultWallpaper(testImage1)
        
        // Act
        wallpaperStore.saveWallpaper(testImage2, for: conversationID1)
        wallpaperStore.saveWallpaper(testImage2, for: conversationID2)

        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage2.pngData())
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID2)?.pngData(), testImage2.pngData())

        wallpaperStore.deleteAllCustom()
        
        // Assert
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID1)?.pngData(), testImage1.pngData())
        XCTAssertEqual(wallpaperStore.wallpaper(for: conversationID2)?.pngData(), testImage1.pngData())
    }
}