using NUnit.Framework;
using System;
using System.Collections.Generic;

/// <summary>
/// Test the User class
/// </summary>
[TestFixture]
public class UserTest
{
    /// <summary>
    /// Reference to the user to be tested
    /// </summary>
    private User user;

    /// <summary>
    /// Setup the tests
    /// </summary>
    [SetUp]
    public void Setup_User()
    {
        PersistentDataController.SavedUserData data = new PersistentDataController.SavedUserData();
        data.username = "username";
        data.avatarIndex = 0;
        user = new User(data);
    }


    /// <summary>
    /// Test for the creation of a new user
    /// </summary>
    [Test]
    public void Test_New_User()
    {
        Assert.NotNull(user);
        Assert.Zero(user.GetCourses().Count);
        Assert.Zero(user.GetMinigames().Count);
    }

    /// <summary>
    /// Test whether progress on a new course can be added
    /// </summary>
    [Test]
    public void Test_User_AddCourse()
    {
        var p = new PersistentDataController.SavedCourseProgress();
        user.AddCourseProgress(p);
        Assert.AreEqual(user.GetCourses().Count, 1);
        Assert.Zero(user.GetMinigames().Count);
    }

    /// <summary>
    /// Test whether progress on a new minigame can be added
    /// </summary>
    [Test]
    public void Test_User_AddMinigame()
    {
        var p = new PersistentDataController.SavedMinigameProgress();
        user.AddMinigameProgress(p);
        Assert.Zero(user.GetCourses().Count);
        Assert.AreEqual(user.GetMinigames().Count, 1);
    }

    /// <summary>
    /// Test GetRecentCourses will return empty when no progress is stored
    /// </summary>
    [Test]
    public void Test_User_GetRecentCourses_Empty()
    {
        Assert.Zero(user.GetRecentCourses().Count);
    }

    /// <summary>
    /// TEMPORARY test for GetRecentCourses will return all progress that is stored
    /// </summary>
    [Test]
    public void Test_User_GetRecentCourses_All()
    {
        var p = new PersistentDataController.SavedCourseProgress();
        p.courseIndex = CourseIndex.FINGERSPELLING;
        p.progress = 0.5f;
        user.AddCourseProgress(p);
        List<Tuple<CourseIndex, float>> list = user.GetRecentCourses();
        Assert.AreEqual(list.Count, 1);
        Assert.AreEqual(list[0].Item1, CourseIndex.FINGERSPELLING);
        Assert.AreEqual(list[0].Item2, 0.5f);
    }

    /// <summary>
    /// Test GetRecommendedCourses will return <c>Tuple<CourseIndex.FINGERSPELLING, 0.0></c> when no progress is stored
    /// </summary>
    [Test]
    public void Test_User_GetRecommendedCourses_Empty()
    {
        List<Tuple<CourseIndex, float>> list = user.GetRecommendedCourses();
        Assert.AreEqual(list.Count, 1);
        Assert.AreEqual(list[0].Item1, CourseIndex.FINGERSPELLING);
        Assert.AreEqual(list[0].Item2, 0.0f);
    }

    /// <summary>
    /// TEMPORARY test for GetRecommenedCourses will return all progress that is stored
    /// </summary>
    [Test]
    public void Test_User_GetRecommendedCourses_All()
    {
        var p = new PersistentDataController.SavedCourseProgress();
        p.courseIndex = CourseIndex.FINGERSPELLING;
        p.progress = 0.5f;
        user.AddCourseProgress(p);
        List<Tuple<CourseIndex, float>> list = user.GetRecommendedCourses();
        Assert.AreEqual(list.Count, 1);
        Assert.AreEqual(list[0].Item1, CourseIndex.FINGERSPELLING);
        Assert.AreEqual(list[0].Item2, 0.5f);
    }

    /// <summary>
    /// Test GetCourseProgress returns null when course cannot be found
    /// </summary>
    [Test]
    public void Test_User_GetCourseProgress_Null()
    {
        Assert.Null(user.GetCourseProgress(CourseIndex.FINGERSPELLING));
        Assert.Null(user.GetCourseProgress((CourseIndex)100));
    }

    /// <summary>
    /// Test GetCourseProgress returns correct progress object
    /// </summary>
    [Test]
    public void Test_User_GetCourseProgress_Valid()
    {
        var p = new PersistentDataController.SavedCourseProgress();
        p.courseIndex = CourseIndex.FINGERSPELLING;
        p.progress = 3.14159265f;
        user.AddCourseProgress(p);
        var q = user.GetCourseProgress(CourseIndex.FINGERSPELLING);
        Assert.AreEqual(q.courseIndex, CourseIndex.FINGERSPELLING);
        Assert.AreEqual(q.progress, 3.14159265f);
    }

    /// <summary>
    /// Test progress of a course is correctly reset (aka removed)
    /// </summary>
    [Test]
    public void Test_User_ResetCourseProgres()
    {
        var p = new PersistentDataController.SavedCourseProgress();
        p.courseIndex = CourseIndex.FINGERSPELLING;
        user.AddCourseProgress(p);
        Assert.IsNotNull(user.GetCourseProgress(CourseIndex.FINGERSPELLING));
        user.ResetCourseProgress(CourseIndex.FINGERSPELLING);
        Assert.IsNull(user.GetCourseProgress(CourseIndex.FINGERSPELLING));
    }

    /// <summary>
    /// Test GetMinigameProgress returns null when minigame cannot be found
    /// </summary>
    [Test]
    public void Test_User_GetMinigameProgress_Null()
    {
        Assert.Null(user.GetMinigameProgress(MinigameIndex.SPELLING_BEE));
        Assert.Null(user.GetMinigameProgress((MinigameIndex)100));

        var p = new PersistentDataController.SavedMinigameProgress();
        p.minigameIndex = MinigameIndex.SPELLING_BEE;
        user.AddMinigameProgress(p);
        Assert.Null(user.GetMinigameProgress(MinigameIndex.HANGMAN));
    }

    /// <summary>
    /// Test GetMinigameProgress returns correct progress object
    /// </summary>
    [Test]
    public void Test_User_GetMinigameProgress_Valid()
    {
        var p = new PersistentDataController.SavedMinigameProgress();
        p.minigameIndex = MinigameIndex.SPELLING_BEE;
        user.AddMinigameProgress(p);
        var q = user.GetMinigameProgress(MinigameIndex.SPELLING_BEE);
        Assert.AreEqual(q.minigameIndex, MinigameIndex.SPELLING_BEE);
        Assert.Zero(q.latestScores.Count);
        Assert.Zero(q.highestScores.Count);
    }

    /// <summary>
    /// Test progress of a minigame is correctly reset (aka removed)
    /// </summary>
    [Test]
    public void Test_User_ResetMinigameProgres()
    {
        var p = new PersistentDataController.SavedMinigameProgress();
        p.minigameIndex = MinigameIndex.SPELLING_BEE;
        user.AddMinigameProgress(p);
        Assert.IsNotNull(user.GetMinigameProgress(MinigameIndex.SPELLING_BEE));
        user.ResetMinigameProgress(MinigameIndex.SPELLING_BEE);
        Assert.IsNull(user.GetMinigameProgress(MinigameIndex.SPELLING_BEE));
    }
}