using System;
using HarmonyLib;

namespace IdleSpectator;

/// <summary>
/// Feeds Activity status gain/loss lines from authoritative WorldBox status transitions.
/// Gain = new dict entry (<see cref="BaseSimObject.addNewStatusEffect"/>).
/// Loss = <see cref="Status.finish"/> (remove, expire, clear) while the actor is still alive.
/// </summary>
[HarmonyPatch]
public static class ActorStatusPatches
{
    [HarmonyPatch(typeof(BaseSimObject), "addNewStatusEffect")]
    [HarmonyPostfix]
    public static void PostfixAddNewStatusEffect(
        BaseSimObject __instance,
        StatusAsset pStatusAsset,
        float pOverrideTimer,
        bool pColorEffect,
        bool pIsActor,
        bool pHasAnyStatus)
    {
        _ = pOverrideTimer;
        _ = pColorEffect;
        _ = pHasAnyStatus;
        if (__instance == null || pStatusAsset == null)
        {
            return;
        }

        Actor actor = ResolveLivingActor(__instance, pIsActor);
        if (actor == null)
        {
            return;
        }

        ActivityLog.NoteStatusChange(actor, pStatusAsset.id, gained: true);
    }

    /// <summary>
    /// Count timer-refresh reapplications for harness asserts (no Activity line).
    /// </summary>
    [HarmonyPatch(
        typeof(BaseSimObject),
        "addStatusEffect",
        new Type[] { typeof(StatusAsset), typeof(float), typeof(bool) })]
    [HarmonyPrefix]
    public static void PrefixAddStatusEffect(
        BaseSimObject __instance,
        StatusAsset pStatusAsset,
        out bool __state)
    {
        __state = false;
        if (__instance == null || pStatusAsset == null || string.IsNullOrEmpty(pStatusAsset.id))
        {
            return;
        }

        try
        {
            if (!__instance.isActor())
            {
                return;
            }

            __state = ActorAlreadyHasStatus(__instance, pStatusAsset.id);
        }
        catch
        {
            __state = false;
        }
    }

    [HarmonyPatch(
        typeof(BaseSimObject),
        "addStatusEffect",
        new Type[] { typeof(StatusAsset), typeof(float), typeof(bool) })]
    [HarmonyPostfix]
    public static void PostfixAddStatusEffect(
        BaseSimObject __instance,
        StatusAsset pStatusAsset,
        bool __result,
        bool __state)
    {
        if (!__state || !__result || __instance == null || pStatusAsset == null)
        {
            return;
        }

        try
        {
            if (!__instance.isActor())
            {
                return;
            }

            Actor actor = __instance.a;
            long actorId = 0;
            try
            {
                if (actor != null)
                {
                    actorId = actor.getID();
                }
            }
            catch
            {
                actorId = 0;
            }

            ActivityLog.NoteStatusRefresh(pStatusAsset.id, actorId);
        }
        catch
        {
            // ignore
        }
    }

    [HarmonyPatch(typeof(Status), nameof(Status.finish))]
    [HarmonyPrefix]
    public static void PrefixFinish(Status __instance, out bool __state)
    {
        __state = false;
        try
        {
            __state = __instance != null && !__instance.is_finished;
        }
        catch
        {
            __state = false;
        }
    }

    [HarmonyPatch(typeof(Status), nameof(Status.finish))]
    [HarmonyPostfix]
    public static void PostfixFinish(Status __instance, bool __state)
    {
        if (!__state || __instance == null)
        {
            return;
        }

        BaseSimObject sim;
        StatusAsset asset;
        try
        {
            sim = __instance.sim_object;
            asset = __instance.asset;
        }
        catch
        {
            return;
        }

        if (sim == null || asset == null || string.IsNullOrEmpty(asset.id))
        {
            return;
        }

        Actor actor;
        try
        {
            if (!sim.isActor())
            {
                return;
            }

            actor = sim.a;
        }
        catch
        {
            return;
        }

        if (actor == null)
        {
            return;
        }

        // Skip death/dispose cleanup bursts - death milestone covers that moment.
        try
        {
            if (!actor.isAlive())
            {
                return;
            }
        }
        catch
        {
            return;
        }

        ActivityLog.NoteStatusChange(actor, asset.id, gained: false);
    }

    private static Actor ResolveLivingActor(BaseSimObject sim, bool hintedActor)
    {
        if (sim == null)
        {
            return null;
        }

        try
        {
            if (!hintedActor && !sim.isActor())
            {
                return null;
            }

            Actor actor = sim.a;
            if (actor == null || !actor.isAlive())
            {
                return null;
            }

            return actor;
        }
        catch
        {
            return null;
        }
    }

    private static bool ActorAlreadyHasStatus(BaseSimObject sim, string statusId)
    {
        try
        {
            var ids = sim.getStatusesIds();
            if (ids == null)
            {
                return false;
            }

            foreach (string id in ids)
            {
                if (!string.IsNullOrEmpty(id)
                    && id.Equals(statusId, StringComparison.OrdinalIgnoreCase))
                {
                    return true;
                }
            }
        }
        catch
        {
            // fall through
        }

        return false;
    }
}