using System;
using System.IO;
using System.Threading.Tasks;
using Paca.Mobile.Core;
using Xunit;

namespace Paca.Tests.Mobile;

public class MobileAdMobInterstitialAndRewardedGateTests
{
    private static readonly string SolutionRoot = Path.GetFullPath(Path.Combine(AppContext.BaseDirectory, "..", "..", "..", "..", ".."));

    [Fact]
    public async Task Gate_AdMobWaterfallController_ShowInterstitial_DelegatesToAdapter()
    {
        var directMgr = new MobileAdManager();
        var successAdapter = new MockAdMobAdapter(shouldSucceed: true);
        var controller = new AdMobWaterfallController(successAdapter, directMgr);

        var result = await controller.ShowInterstitialAsync();
        Assert.True(result);

        var failureAdapter = new MockAdMobAdapter(shouldSucceed: false);
        var failController = new AdMobWaterfallController(failureAdapter, directMgr);
        var failResult = await failController.ShowInterstitialAsync();
        Assert.False(failResult);
    }

    [Fact]
    public async Task Gate_AdMobWaterfallController_ShowRewarded_DelegatesToAdapter()
    {
        var directMgr = new MobileAdManager();
        var successAdapter = new MockAdMobAdapter(shouldSucceed: true);
        var controller = new AdMobWaterfallController(successAdapter, directMgr);

        var result = await controller.ShowRewardedAsync();
        Assert.True(result);

        var failureAdapter = new MockAdMobAdapter(shouldSucceed: false);
        var failController = new AdMobWaterfallController(failureAdapter, directMgr);
        var failResult = await failController.ShowRewardedAsync();
        Assert.False(failResult);
    }

    [Fact]
    public async Task Gate_AdMobRewardCoordinator_AutomaticallyGrantsBoost_OnRewardEarned()
    {
        var tokenManager = new RewardedBoostTokenManager();
        Assert.False(tokenManager.IsBoostActive);

        var mockAdapter = new MockAdMobAdapter(shouldSucceed: true);
        var coordinator = new AdMobRewardCoordinator(mockAdapter, tokenManager);

        var shown = await coordinator.RequestAndShowRewardAdAsync();
        Assert.True(shown);
        Assert.True(tokenManager.IsBoostActive);
        Assert.True(tokenManager.RemainingBoostTime.TotalMinutes > 50);
    }

    [Fact]
    public void Gate_AndroidAdMobAdapter_SourceAudit_EnsuresRealRewardEventAndInvocation()
    {
        var adapterPath = Path.Combine(SolutionRoot, "src", "Paca.Mobile", "Platforms", "Android", "AndroidAdMobAdapter.cs");
        Assert.True(File.Exists(adapterPath), $"AndroidAdMobAdapter.cs must exist at {adapterPath}");

        var code = File.ReadAllText(adapterPath);
        Assert.Contains("public event Action<string, double>? OnUserEarnedReward;", code);
        Assert.Contains("OnUserEarnedReward?.Invoke", code);
    }
}