using System;
using ai.behaviours;
using HarmonyLib;
using UnityEngine;

namespace IdleSpectator;

/// <summary>Building damage/destroy/eat/complete interest patches from mutation discovery.</summary>
[HarmonyPatch]
public static class BuildingEventPatches
{
    [HarmonyPatch(typeof(BehDealDamageToTargetBuilding), nameof(BehDealDamageToTargetBuilding.execute))]
    [HarmonyPostfix]
    public static void PostfixDamageBuilding(Actor pActor, BehResult __result)
    {
        // Routine siege chips are Layer B noise. Camera waits for consume.
        _ = pActor;
        _ = __result;
    }

    [HarmonyPatch(typeof(BehConsumeTargetBuilding), nameof(BehConsumeTargetBuilding.execute))]
    [HarmonyPostfix]
    public static void PostfixConsumeBuilding(Actor pActor, BehResult __result)
    {
        if (pActor == null || !pActor.isAlive() || __result == BehResult.Stop)
        {
            return;
        }

        Building food = null;
        try
        {
            food = pActor.beh_building_target;
        }
        catch
        {
            food = null;
        }

        string label = EventReason.BuildingEat(pActor, food);
        bool fruitForage = IsFruitForage(food);
        // Fruit bushes are high-rate ambient - fill-band strength so they do not crowd combat/story.
        // Real settlement eats (granary/etc.) stay camera-competitive.
        float strength = fruitForage ? 42f : 78f;
        string category = fruitForage ? "Forage" : "Spectacle";
        string assetId = fruitForage ? "building_consume_fruit" : "building_consume";
        Emit(assetId, strength, category, pActor, label);
    }

    [HarmonyPatch(typeof(Building), "startDestroyBuilding")]
    [HarmonyPostfix]
    public static void PostfixStartDestroy(Building __instance)
    {
        // Ambient object/building falls are Layer B only.
        // Nearest-unit attach + "A Tree falls near X" was winning Watching then blanking via identity_filter.
        // Intentional spectacle remains building_consume (actor-led eat).
        _ = __instance;
    }

    /// <summary>
    /// Civ construction finished (houses, temples, statues).
    /// Nature/tree completes stay silent - not settlement spectacle.
    /// </summary>
    [HarmonyPatch(typeof(Building), nameof(Building.completeConstruction))]
    [HarmonyPostfix]
    public static void PostfixCompleteConstruction(Building __instance)
    {
        if (!AgentHarness.LiveFeedsAllowed || __instance?.asset == null)
        {
            return;
        }

        if (!LibraryAssetNames.IsCivBuilding(__instance.asset))
        {
            return;
        }

        string buildingId = "";
        try
        {
            buildingId = __instance.asset.id ?? "";
        }
        catch
        {
            buildingId = "";
        }

        bool spectacle = LibraryAssetNames.IsSpectacleBuilding(buildingId, __instance.asset);
        float strength = spectacle ? 86f : 72f;
        Vector3 pos = BuildingWorldPos(__instance);
        Actor follow = WorldActivityScanner.FindNearestAliveUnit(pos, 48f);
        string label = EventReason.BuildingComplete(follow, buildingId, spectacle);
        string key = "building:complete:"
                     + (string.IsNullOrEmpty(buildingId) ? "unknown" : buildingId)
                     + ":"
                     + EventFeedUtil.SafeId(follow);

        EventFeedUtil.Register(
            key,
            "building",
            "Settlement",
            label,
            string.IsNullOrEmpty(buildingId) ? "building_complete" : buildingId,
            strength,
            pos,
            follow,
            locationOnly: follow == null,
            minWatch: 6f,
            maxWatch: spectacle ? 28f : 18f);
    }

    private static bool IsFruitForage(Building food)
    {
        if (food?.asset == null)
        {
            return false;
        }

        try
        {
            string type = food.asset.type ?? "";
            return string.Equals(type, "type_fruits", StringComparison.OrdinalIgnoreCase);
        }
        catch
        {
            return false;
        }
    }

    private static void Emit(string eventId, float strength, string category, Actor actor, string label)
    {
        if (!AgentHarness.LiveFeedsAllowed)
        {
            return;
        }

        string key = "building:" + eventId + ":" + EventFeedUtil.SafeId(actor);
        EventFeedUtil.Register(
            key,
            "building",
            string.IsNullOrEmpty(category) ? "Spectacle" : category,
            label,
            eventId,
            strength,
            actor.current_position,
            actor);
    }

    private static Vector3 BuildingWorldPos(Building building)
    {
        try
        {
            if (building.current_tile != null)
            {
                return building.current_tile.posV3;
            }
        }
        catch
        {
            // fall through
        }

        try
        {
            return building.current_position;
        }
        catch
        {
            return Vector3.zero;
        }
    }
}