using System;
using Paca.Mobile.Core;
using Xunit;

namespace Paca.Tests.Mobile;

/// <summary>
/// Gate 195 ~ 198: 모바일 배터리 발열 가드 & 네이티브 햅틱 피드백 기계적 검증
/// </summary>
public class MobileBatteryGuardAndHapticGateTests
{
    private class MockHapticService : IHapticFeedbackService
    {
        public int SuccessCount { get; private set; }
        public int WarningCount { get; private set; }
        public int ClickCount { get; private set; }

        public void PerformClick() => ClickCount++;
        public void PerformSuccess() => SuccessCount++;
        public void PerformWarning() => WarningCount++;
    }

    [Fact]
    public void Gate195_BatteryHealthGuard_PausesOnLowBattery_WhenDischarging()
    {
        // 배터리 15% (0.15), 방전 중 (충전기 미연결)
        var shouldPause = BatteryHealthGuard.ShouldPauseDownload(
            batteryLevel: 0.15,
            isCharging: false,
            lowBatteryThreshold: 0.20
        );

        Assert.True(shouldPause);
    }

    [Fact]
    public void Gate196_BatteryHealthGuard_Allows_WhenCharging()
    {
        // 배터리 10% (0.10), 충전기 연결됨
        var shouldPause = BatteryHealthGuard.ShouldPauseDownload(
            batteryLevel: 0.10,
            isCharging: true,
            lowBatteryThreshold: 0.20
        );

        Assert.False(shouldPause);
    }

    [Fact]
    public void Gate197_HapticFeedbackService_Invocation_Audit()
    {
        var haptic = new MockHapticService();

        haptic.PerformClick();
        haptic.PerformSuccess();
        haptic.PerformSuccess();
        haptic.PerformWarning();

        Assert.Equal(1, haptic.ClickCount);
        Assert.Equal(2, haptic.SuccessCount);
        Assert.Equal(1, haptic.WarningCount);
    }

    [Fact]
    public void Gate198_BatteryStatusReport_Message_Formatting()
    {
        var message = BatteryHealthGuard.GetStatusMessage(
            batteryLevel: 0.12,
            isCharging: false
        );

        Assert.Contains("12%", message);
        Assert.Contains("일시 정지", message);
        Assert.Contains("충전기", message);
    }
}