using System.Reflection;
using MegaCrit.Sts2.Core.Logging;
using MegaCrit.Sts2.Core.Modding;
using MegaCrit.Sts2.Core.Nodes.Combat;
using STS2RitsuLib;
using STS2RitsuLib.Interop;
using STS2RitsuLib.Scaffolding.Godot.NodeAttachments;
using STS2RitsuLib.Patching.Core;

namespace VulnerabilityIndicator.Scripts;

/// <summary>
/// Mod entry point. Initializes RitsuLib, registers patches, lifecycle observers,
/// and sets up node attachments for the vulnerability indicator.
/// </summary>
[ModInitializer(nameof(Init))]
public class Entry
{
    public const string ModId = "VulnerabilityIndicator";
    public static readonly Logger Logger = RitsuLibFramework.CreateLogger(ModId);

    public static void Init()
    {
        var assembly = Assembly.GetExecutingAssembly();
        RitsuLibFramework.EnsureGodotScriptsRegistered(assembly, Logger);
        ModTypeDiscoveryHub.RegisterModAssembly(ModId, assembly);

        // Subscribe to lifecycle events (card drawn, discarded, played, turns, etc.)
        // to keep vulnerability indicators up to date.
        RitsuLibFramework.SubscribeLifecycle(new VulnerabilityLifecycleObserver());

        // Register the node attachment that places vulnerability indicators
        // on the combat UI. The indicator creates per-side icons.
        ModNodeAttachmentRegistry.For(ModId)
            .RegisterReadyChild<NCombatUi, UI.VulnerabilityPlayerIndicator>(
                "vuln_indicator",
                static _ => new UI.VulnerabilityPlayerIndicator(),
                static (parent, node) => node.Bind(parent),
                new NodeAttachmentOptions
                {
                    Name = "VulnerabilityPlayerIndicator",
                    Order = 100,
                    DuplicatePolicy = NodeAttachmentDuplicatePolicy.ReuseExistingByName,
                    SetupTiming = NodeAttachmentSetupTiming.AfterAdd,
                    IncludeDerivedParentTypes = true,
                });

        // Register Harmony patches via RitsuLib patcher.
        var patcher = RitsuLibFramework.CreatePatcher(ModId, "indicator-patches");
        patcher.RegisterPatch<Patches.CombatUiPlayerPanelPatch>();
        if (!patcher.PatchAll())
        {
            Logger.Warn("Some patches failed to apply.");
        }

        Logger.Info("Vulnerability Indicator mod initialized!");
    }
}