using System.Net;
using System.Net.Http.Json;
using System.Text;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
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);
    }
}