using System.Net;
using System.Net.Http.Json;
using System.Text;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using NeonSprawl.Server.Game.Factions;
using NeonSprawl.Server.Game.Quests;
using NeonSprawl.Server.Tests;
using Xunit;

namespace NeonSprawl.Server.Tests.Game.Quests;

public sealed class QuestFixtureApiTests
{
    private const string DevPlayer = "dev-local-1";
    private const string FixturePath = $"/game/players/{DevPlayer}/__dev/quest-fixture";
    private const string ChainQuestId = PrototypeE7M1QuestCatalogRules.ChainQuestId;

    private static QuestFixtureRequest ValidFixture(params string[] completedQuestIds) =>
        new()
        {
            SchemaVersion = QuestFixtureRequest.CurrentSchemaVersion,
            CompletedQuestIds = completedQuestIds,
        };

    [Fact]
    public async Task PostQuestFixture_ShouldReturnNotFound_WhenRouteNotRegistered()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.WithWebHostBuilder(b =>
        {
            b.UseEnvironment("Production");
            b.UseSetting("Game:EnableQuestFixtureApi", "false");
        }).CreateClient();

        // Act
        var response = await client.PostAsJsonAsync(FixturePath, ValidFixture(ChainQuestId));

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldReturnBadRequest_WhenBodyNull()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();

        // Act
        var response = await client.PostAsync(
            FixturePath,
            new StringContent(string.Empty, Encoding.UTF8, "application/json"));

        // Assert
        Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldReturnBadRequest_WhenSchemaVersionMismatch()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var request = new QuestFixtureRequest
        {
            SchemaVersion = QuestFixtureRequest.CurrentSchemaVersion + 99,
            CompletedQuestIds = [ChainQuestId],
        };

        // Act
        var response = await client.PostAsJsonAsync(FixturePath, request);

        // Assert
        Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldReturnNotFound_WhenPlayerUnknown()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();

        // Act
        var response = await client.PostAsJsonAsync(
            "/game/players/missing-player/__dev/quest-fixture",
            ValidFixture(ChainQuestId));

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldMarkOperatorChainCompleted_WhenNotStarted()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var progressStore = factory.Services.GetRequiredService<IPlayerQuestStateStore>();

        // Act
        var response = await client.PostAsJsonAsync(FixturePath, ValidFixture(ChainQuestId));

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadFromJsonAsync<QuestFixtureResponse>();
        Assert.NotNull(body);
        Assert.True(body!.Applied);
        Assert.True(progressStore.TryGetProgress(DevPlayer, ChainQuestId, out var progress));
        Assert.Equal(QuestProgressStatus.Completed, progress.Status);
        Assert.NotNull(progress.CompletedAt);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldBeIdempotent_WhenQuestAlreadyCompleted()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var first = await client.PostAsJsonAsync(FixturePath, ValidFixture(ChainQuestId));
        Assert.Equal(HttpStatusCode.OK, first.StatusCode);

        // Act
        var second = await client.PostAsJsonAsync(FixturePath, ValidFixture(ChainQuestId));

        // Assert
        Assert.Equal(HttpStatusCode.OK, second.StatusCode);
    }

    [Fact]
    public async Task PostQuestFixture_ShouldClearProgress_WhenResetQuestIdsProvided()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var progressStore = factory.Services.GetRequiredService<IPlayerQuestStateStore>();
        var markCompleted = await client.PostAsJsonAsync(FixturePath, ValidFixture(ChainQuestId));
        Assert.Equal(HttpStatusCode.OK, markCompleted.StatusCode);
        Assert.True(progressStore.TryGetProgress(DevPlayer, ChainQuestId, out _));

        // Act
        var reset = await client.PostAsJsonAsync(
            FixturePath,
            new QuestFixtureRequest
            {
                SchemaVersion = QuestFixtureRequest.CurrentSchemaVersion,
                ResetQuestIds = [ChainQuestId],
            });

        // Assert
        Assert.Equal(HttpStatusCode.OK, reset.StatusCode);
        Assert.False(progressStore.TryGetProgress(DevPlayer, ChainQuestId, out _));
    }

    [Fact]
    public async Task PostQuestFixture_ResetAllPrototypeQuests_ShouldReturnNotStartedOnGetQuestProgress()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var markCompleted = await client.PostAsJsonAsync(
            FixturePath,
            ValidFixture(ChainQuestId, PrototypeE7M1QuestCatalogRules.GatherIntroQuestId));
        Assert.Equal(HttpStatusCode.OK, markCompleted.StatusCode);

        // Act
        var reset = await client.PostAsJsonAsync(
            FixturePath,
            new QuestFixtureRequest
            {
                SchemaVersion = QuestFixtureRequest.CurrentSchemaVersion,
                ResetQuestIds =
                [
                    PrototypeE7M1QuestCatalogRules.CombatIntroQuestId,
                    PrototypeE7M1QuestCatalogRules.GatherIntroQuestId,
                    PrototypeE7M1QuestCatalogRules.GridContractQuestId,
                    PrototypeE7M1QuestCatalogRules.ChainQuestId,
                    PrototypeE7M1QuestCatalogRules.RefineIntroQuestId,
                ],
            });
        var progress = await client.GetAsync($"/game/players/{DevPlayer}/quest-progress");

        // Assert
        Assert.Equal(HttpStatusCode.OK, reset.StatusCode);
        Assert.Equal(HttpStatusCode.OK, progress.StatusCode);
        var body = await progress.Content.ReadFromJsonAsync<QuestProgressListResponse>();
        Assert.NotNull(body);
        Assert.All(body!.Quests, row => Assert.Equal(QuestProgressApi.StatusNotStarted, row.Status));
    }

    [Fact]
    public async Task PostQuestFixture_ShouldClearFactionStanding_WhenResetFactionIdsProvided()
    {
        // Arrange
        await using var factory = new InMemoryWebApplicationFactory();
        var client = factory.CreateClient();
        var standingStore = factory.Services.GetRequiredService<IFactionStandingStore>();
        const string gridFactionId = PrototypeE7M3QuestFactionRules.GridContractGateFactionId;
        var apply = ReputationOperations.TryApplyDelta(
            DevPlayer,
            gridFactionId,
            15,
            "fixture-seed-standing",
            ReputationDeltaSourceKinds.QuestCompletion,
            ChainQuestId,
            standingStore,
            factory.Services.GetRequiredService<IReputationDeltaStore>(),
            factory.Services.GetRequiredService<TimeProvider>());
        Assert.True(apply.Success);
        Assert.Equal(15, standingStore.TryGetStanding(DevPlayer, gridFactionId).Standing);

        // Act
        var reset = await client.PostAsJsonAsync(
            FixturePath,
            new QuestFixtureRequest
            {
                SchemaVersion = QuestFixtureRequest.CurrentSchemaVersion,
                ResetFactionIds = [gridFactionId],
            });

        // Assert
        Assert.Equal(HttpStatusCode.OK, reset.StatusCode);
        Assert.Equal(0, standingStore.TryGetStanding(DevPlayer, gridFactionId).Standing);
    }
}