using HarmonyLib;

namespace IdleSpectator;

/// <summary>Era + meta genesis patches from mutation discovery.</summary>
[HarmonyPatch]
public static class MetaEventPatches
{
    [HarmonyPatch(typeof(WorldAgeManager), nameof(WorldAgeManager.startNextAge))]
    [HarmonyPostfix]
    public static void PostfixStartNextAge()
    {
        MetaInterestFeed.EmitEra(ReadCurrentEraId());
    }

    [HarmonyPatch(typeof(CultureManager), nameof(CultureManager.newCulture))]
    [HarmonyPostfix]
    public static void PostfixNewCulture(Culture __result)
    {
        EmitNew("new_culture", "Culture", 68f, __result, "culture");
    }

    [HarmonyPatch(typeof(ReligionManager), nameof(ReligionManager.newReligion))]
    [HarmonyPostfix]
    public static void PostfixNewReligion(Religion __result)
    {
        EmitNew("new_religion", "Culture", 72f, __result, "religion");
    }

    [HarmonyPatch(typeof(LanguageManager), nameof(LanguageManager.newLanguage))]
    [HarmonyPostfix]
    public static void PostfixNewLanguage(Language __result)
    {
        EmitNew("new_language", "Culture", 60f, __result, "language");
    }

    [HarmonyPatch(typeof(ClanManager), nameof(ClanManager.newClan))]
    [HarmonyPostfix]
    public static void PostfixNewClan(Clan __result)
    {
        EmitNew("new_clan", "Politics", 70f, __result, "clan");
    }

    [HarmonyPatch(typeof(ArmyManager), nameof(ArmyManager.newArmy))]
    [HarmonyPostfix]
    public static void PostfixNewArmy(Army __result)
    {
        EmitNew("new_army", "Politics", 66f, __result, "army");
    }

    [HarmonyPatch(typeof(AllianceManager), nameof(AllianceManager.newAlliance))]
    [HarmonyPostfix]
    public static void PostfixNewAlliance(Alliance __result)
    {
        EmitNew("new_alliance", "Politics", 78f, __result, "alliance");
    }

    [HarmonyPatch(typeof(CityManager), nameof(CityManager.newCity))]
    [HarmonyPostfix]
    public static void PostfixNewCity(City __result)
    {
        EmitNew("new_city", "Politics", 74f, __result, "city");
    }

    private static void EmitNew(
        string eventId,
        string category,
        float strength,
        object meta,
        string kind)
    {
        Actor anchor = TryReadActor(meta);
        if (anchor == null)
        {
            return;
        }

        string label = EventReason.MetaNew(anchor, kind);
        MetaInterestFeed.EmitMeta(eventId, category, strength, InterestOwnership.Signal, anchor, label);
    }

    private static Actor TryReadActor(object meta)
    {
        if (meta == null)
        {
            return null;
        }

        try
        {
            foreach (string name in new[] { "founder", "creator", "leader", "king", "actor", "unit" })
            {
                object value = meta.GetType().GetField(name)?.GetValue(meta)
                               ?? meta.GetType().GetProperty(name)?.GetValue(meta, null);
                if (value is Actor actor && actor.isAlive())
                {
                    return actor;
                }
            }
        }
        catch
        {
            // ignore
        }

        return null;
    }

    private static string ReadCurrentEraId()
    {
        try
        {
            object world = World.world;
            object ageManager = world?.GetType().GetField("era_manager")?.GetValue(world)
                                ?? world?.GetType().GetProperty("era_manager")?.GetValue(world, null)
                                ?? world?.GetType().GetField("age_manager")?.GetValue(world)
                                ?? MapBox.instance?.GetType().GetField("era_manager")?.GetValue(MapBox.instance);
            if (ageManager == null)
            {
                return "age_unknown";
            }

            object asset = ageManager.GetType().GetMethod("getCurrentAge")?.Invoke(ageManager, null)
                           ?? ageManager.GetType().GetProperty("current_age")?.GetValue(ageManager, null)
                           ?? ageManager.GetType().GetField("current_age")?.GetValue(ageManager);
            if (asset != null)
            {
                object id = asset.GetType().GetField("id")?.GetValue(asset)
                            ?? asset.GetType().GetProperty("id")?.GetValue(asset, null);
                if (id != null)
                {
                    return id.ToString();
                }
            }
        }
        catch
        {
            // ignore
        }

        return "age_unknown";
    }
}