using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Time.Testing;
using NeonSprawl.Server.Game.Combat;
using NeonSprawl.Server.Game.Crafting;
using NeonSprawl.Server.Game.Gathering;
using NeonSprawl.Server.Game.Items;
using NeonSprawl.Server.Game.Mastery;

namespace NeonSprawl.Server.Tests.Game.PositionState;

/// <summary>Integration host with <see cref="PositionStateServiceCollectionExtensions.NeonSprawlConnectionStringName"/> bound from environment.</summary>
public sealed class PostgresWebApplicationFactory : WebApplicationFactory<Program>
{
    /// <summary>Controllable UTC clock for cast cooldown integration tests (NEO-32).</summary>
    public FakeTimeProvider? FakeClock { get; private set; }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        var cs = Environment.GetEnvironmentVariable("ConnectionStrings__NeonSprawl");
        PostgresDockerHelper.EnsurePostgresOrStartDockerBlocking(cs);
        if (string.IsNullOrWhiteSpace(cs))
        {
            throw new InvalidOperationException(
                "Set ConnectionStrings__NeonSprawl for Postgres integration tests (see server/README.md).");
        }

        builder.UseEnvironment("Testing");

        var skillsDir = SkillCatalogPathResolution.TryDiscoverSkillsDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/skills from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var masteryDir = MasteryCatalogPathResolution.TryDiscoverMasteryDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/mastery from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var itemsDir = ItemCatalogPathResolution.TryDiscoverItemsDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/items from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var resourceNodesDir = ResourceNodeCatalogPathResolution.TryDiscoverResourceNodesDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/resource-nodes from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var recipesDir = RecipeCatalogPathResolution.TryDiscoverRecipesDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/recipes from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var abilitiesDir = AbilityCatalogPathResolution.TryDiscoverAbilitiesDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/abilities from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        var npcBehaviorsDir = NpcBehaviorCatalogPathResolution.TryDiscoverNpcBehaviorsDirectory(AppContext.BaseDirectory)
            ?? throw new InvalidOperationException(
                "Could not discover repo content/npc-behaviors from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
        builder.UseSetting("Content:SkillsDirectory", skillsDir);
        builder.UseSetting("Content:MasteryDirectory", masteryDir);
        builder.UseSetting("Content:ItemsDirectory", itemsDir);
        builder.UseSetting("Content:ResourceNodesDirectory", resourceNodesDir);
        builder.UseSetting("Content:RecipesDirectory", recipesDir);
        builder.UseSetting("Content:AbilitiesDirectory", abilitiesDir);
        builder.UseSetting("Content:NpcBehaviorsDirectory", npcBehaviorsDir);

        builder.ConfigureAppConfiguration((_, config) =>
        {
            config.AddInMemoryCollection(new Dictionary<string, string?>
            {
                ["ConnectionStrings:NeonSprawl"] = cs.Trim(),
            });
        });

        builder.ConfigureTestServices(services =>
        {
            for (var i = services.Count - 1; i >= 0; i--)
            {
                if (services[i].ServiceType == typeof(TimeProvider))
                {
                    services.RemoveAt(i);
                }
            }

            var fakeTime = new FakeTimeProvider(new DateTimeOffset(2026, 4, 30, 12, 0, 0, TimeSpan.Zero));
            FakeClock = fakeTime;
            services.AddSingleton<TimeProvider>(fakeTime);
        });
    }
}