using System.Security.Claims;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using RadicadeServer.API.Moderation;
using RadicadeServer.DB;
using RadicadeServer.RecNet.Accounts;
using RadicadeServer.RecNet.Auth;
using RadicadeServer.RecNet.Enums.Moderation;
using RadicadeServer.RecNet.Moderation;
using RadicadeServer.Utils;
using Xunit;

namespace RadicadeServer.Tests;

[Collection(DbFactoryCollection.Name)]
public class ModerationBlockDetailsTests
{
    private static RecDBContext NewDb() => new(
        TestDbOptions.Create()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options);

    private static PlayerReportingAPI NewApi(RecDBContext db, long? accountId)
    {
        var identity = new ClaimsIdentity("TestAuth");
        if (accountId.HasValue)
            identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, accountId.Value.ToString()));
        return new PlayerReportingAPI(
            db)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext { User = new ClaimsPrincipal(identity) }
            }
        };
    }

    private static void AssertReportSucceeded(ActionResult<OkResponse> result)
    {
        var ok = Assert.IsType<OkObjectResult>(result.Result);
        Assert.True(Assert.IsType<OkResponse>(ok.Value).Success);
    }

    private static async Task AddReporterAsync(RecDBContext db, long accountId, string? roles = null)
    {
        db.Profiles.Add(new Profile
        {
            accountId = accountId,
            username = $"reporter{accountId}",
            displayName = $"Reporter {accountId}",
            profileImage = DBConfig.DefaultProfileImage,
            role = roles
        });
        await db.SaveChangesAsync();
    }

    [Theory]
    [InlineData(0, false)]
    [InlineData(5, false)]
    [InlineData(6, true)]
    [InlineData(7, true)]
    public void AutomaticTimeoutRequiresMoreThanFiveReportsFromAPlayer(int reportCount, bool expected)
    {
        Assert.Equal(expected, PlayerReportingAPI.ShouldApplyAutomaticTimeout(reportCount, reporterIsModerator: false));
    }

    [Fact]
    public async Task TheSixthPublicReportCreatesAnAutomaticTimeout()
    {
        using var db = NewDb();
        await AddReporterAsync(db, 6);
        db.Reputations.Add(new Reputation { AccountId = 42, ReportCount = 5 });
        await db.SaveChangesAsync();

        AssertReportSucceeded(await NewApi(db, 6).CreateReport(new CreateReportRequest
        {
            PlayerIdReported = 42,
            ReportCategory = ReportCategory.CoC_Trolling,
            Details = "report details",
            RoomId = 0
        }));

        var moderation = await db.Moderation.SingleAsync();
        Assert.Equal("Automatic Timeout", moderation.BanMethod);
        Assert.Equal("You have received a timeout due to a high number of reports for Trolling.", moderation.Message);
        Assert.True(moderation.CreatedAt <= DateTime.UtcNow);
        Assert.Equal(6, (await db.Reputations.SingleAsync(x => x.AccountId == 42)).ReportCount);
    }

    [Fact]
    public async Task SelfAndUnauthenticatedReportsDoNotCountTowardAutomaticTimeouts()
    {
        using var db = NewDb();
        db.Reputations.Add(new Reputation { AccountId = 42, ReportCount = 5 });
        await db.SaveChangesAsync();

        AssertReportSucceeded(await NewApi(db, 42).CreateReport(new CreateReportRequest
        {
            PlayerIdReported = 42,
            ReportCategory = ReportCategory.CoC_Trolling
        }));
        Assert.Empty(await db.Moderation.ToListAsync());
        Assert.Equal(5, (await db.Reputations.SingleAsync(x => x.AccountId == 42)).ReportCount);

        AssertReportSucceeded(await NewApi(db, null).CreateReport(new CreateReportRequest
        {
            PlayerIdReported = 42,
            ReportCategory = ReportCategory.CoC_Trolling
        }));
        Assert.Empty(await db.Moderation.ToListAsync());
        Assert.Equal(5, (await db.Reputations.SingleAsync(x => x.AccountId == 42)).ReportCount);
    }

    [Fact]
    public async Task ModeratorReportCreatesDirectTimeoutWithoutAlsoUsingPublicReportEscalation()
    {
        using var db = NewDb();
        await AddReporterAsync(db, 6, "moderator");
        db.Reputations.Add(new Reputation { AccountId = 42, ReportCount = 0 });
        await db.SaveChangesAsync();

        AssertReportSucceeded(await NewApi(db, 6).CreateReport(new CreateReportRequest
        {
            PlayerIdReported = 42,
            ReportCategory = ReportCategory.CoC_Trolling,
            Details = "Moderator observed trolling"
        }));

        var moderation = await db.Moderation.SingleAsync();
        Assert.Equal("Moderator Report", moderation.BanMethod);
        Assert.Equal("Moderator observed trolling", moderation.Message);
        Assert.Equal(0, (await db.Reputations.SingleAsync(x => x.AccountId == 42)).ReportCount);
    }

    [Fact]
    public async Task InvalidReportCategoryIsRejectedBeforeItCounts()
    {
        using var db = NewDb();
        await AddReporterAsync(db, 6);

        var result = await NewApi(db, 6).CreateReport(new CreateReportRequest
        {
            PlayerIdReported = 42,
            ReportCategory = (ReportCategory)9999
        });

        Assert.IsType<BadRequestObjectResult>(result.Result);
        Assert.Empty(await db.Reputations.ToListAsync());
    }

    [Theory]
    [InlineData(ReportCategory.CoC_Trolling, "Trolling")]
    [InlineData(ReportCategory.CoC_Sexual, "Sexual behavior")]
    public void AutomaticTimeoutReasonUsesTheReportCategory(ReportCategory category, string expected)
    {
        Assert.Equal(expected, PlayerReportingAPI.GetAutomaticTimeoutReason(category));
    }

    [Fact]
    public async Task VoiceModerationBlockDetailsCarryStartTimeButNotModeratorOnlyNote()
    {
        using var db = NewDb();
        var startedAt = DateTime.UtcNow;
        db.Moderation.Add(new ModerationDB
        {
            PlayerId = 42,
            IsBan = true,
            Message = "Sexually explicit behavior or photos",
            ModeratorNote = "Sexual harassment in the Rec Center",
            BanMethod = "Voice Moderation",
            Category = ReportCategory.CoC_Sexual,
            CreatedAt = startedAt,
            ExpireDuration = startedAt.AddDays(1),
            AppealCode = "ABC12345"
        });
        await db.SaveChangesAsync();

        var api = NewApi(db, 42);
        api.ControllerContext.HttpContext.Request.Headers["X-Forwarded-For"] = "192.0.2.42";
        var result = Assert.IsType<OkObjectResult>(await api.GetBlockDetails());
        var details = Assert.IsType<BlockDetails>(result.Value);

        Assert.Equal(startedAt, details.TimeoutStartedAt);
        Assert.Equal("VoiceModeration", details.BanType);
        Assert.Equal("Sexually explicit behavior or photos", details.Message);
    }

    [Theory]
    [InlineData("Automatic Timeout", "You have received a timeout due to a high number of reports for Trolling", "You have received a timeout due to a high number of reports for Trolling.")]
    [InlineData("Moderator Report", "You were reported by a moderator", "You have received a timeout. You were reported by a moderator.")]
    [InlineData("Moderator Report", "You were reported by a moderator.", "You have received a timeout. a moderator report.")]
    [InlineData("Timeout", "Trolling", "You have received a timeout due to a high number of reports for Trolling.")]
    [InlineData("Automatic Timeout", "You have received a timeout due to a high number of reports for Trolling.", "You have received a timeout due to a high number of reports for Trolling.")]
    public async Task PersistedTimeoutBanHasClientFacingTimeoutCopy(string banMethod, string storedReason, string expectedMessage)
    {
        using var db = NewDb();
        var startedAt = DateTime.UtcNow;
        db.Moderation.Add(new ModerationDB
        {
            PlayerId = 42,
            IsBan = true,
            Message = storedReason,
            BanMethod = banMethod,
            Category = ReportCategory.CoC_Trolling,
            CreatedAt = startedAt,
            ExpireDuration = startedAt.AddHours(1),
            AppealCode = "ABC12345"
        });
        await db.SaveChangesAsync();

        var api = NewApi(db, 42);
        api.ControllerContext.HttpContext.Request.Headers["X-Forwarded-For"] = "192.0.2.42";
        var result = Assert.IsType<OkObjectResult>(await api.GetBlockDetails());
        var details = Assert.IsType<BlockDetails>(result.Value);

        Assert.Equal("Timeout", details.BanType);
        Assert.Equal(startedAt, details.TimeoutStartedAt);
        Assert.Equal(expectedMessage, details.DisplayReason);
        Assert.Equal(expectedMessage, details.Message);
    }

    [Fact]
    public async Task HardwareBanShowsTheOriginalRelatedAccountOnItsOwnLine()
    {
        using var db = NewDb();
        var startedAt = DateTime.UtcNow;
        db.Players.Add(new PlayerData { AccountId = 42, DeviceId = "shared-device" });
        db.Profiles.Add(new Profile
        {
            accountId = 12,
            username = "HealthyMoose640",
            displayName = "HealthyMoose640",
            profileImage = DBConfig.DefaultProfileImage
        });
        db.HardwareBans.Add(new HardwareBan
        {
            DeviceId = "shared-device",
            BannedAccountId = 12,
            Reason = "Moderator. Account ban",
            CreatedAt = startedAt,
            ExpiresAt = startedAt.AddDays(1)
        });
        await db.SaveChangesAsync();

        var api = NewApi(db, 42);
        api.ControllerContext.HttpContext.Request.Headers["X-Forwarded-For"] = "192.0.2.42";
        var result = Assert.IsType<OkObjectResult>(await api.GetBlockDetails());
        var details = Assert.IsType<BlockDetails>(result.Value);

        Assert.Contains("\nRelated account: @HealthyMoose640", details.Message);
        Assert.Equal(startedAt, details.TimeoutStartedAt);
    }

    /* Every ban the client is shown has to carry the moment it started, because
       that is the "Banned since" line. Kicks must not: they are not bans and the
       screen has nothing to date. */
    [Fact]
    public void BanBlockDetailsCarryBannedSinceWhileKicksDoNot()
    {
        var startedAt = DateTime.UtcNow.AddDays(-3);

        var ban = PlayerUtils.BuildBlockDetails(true, ReportCategory.Misc, "reason", startedAt.AddDays(5), startedAtUtc: startedAt);
        Assert.Equal(startedAt, ban.TimeoutStartedAt);

        var kick = PlayerUtils.BuildBlockDetails(true, ReportCategory.Misc, "kicked", DateTime.UtcNow.AddMinutes(15));
        Assert.Null(kick.TimeoutStartedAt);
    }
}