using NeoModLoader.services;
using UnityEngine;

namespace IdleSpectator;

/// <summary>
/// Persistent "who am I watching" caption while Idle Spectator is active.
/// </summary>
public static class WatchCaption
{
    private const float RefreshSeconds = 4.5f;

    private static float _lastShownAt = -999f;
    private static UnitDossier _current;

    public static UnitDossier Current => _current;

    public static string LastHeadline { get; private set; } = "";

    public static string LastDetail { get; private set; } = "";

    public static string LastCaptionText { get; private set; } = "";

    public static void Clear()
    {
        _current = null;
        LastHeadline = "";
        LastDetail = "";
        LastCaptionText = "";
        _lastShownAt = -999f;
        try
        {
            WorldTip.hideNow();
        }
        catch
        {
            // ignore
        }
    }

    public static void SetFromInterest(InterestEvent interest)
    {
        Actor unit = interest != null && interest.HasFollowUnit
            ? interest.FollowUnit
            : (MoveCamera.hasFocusUnit() ? MoveCamera._focus_unit : null);

        if (unit == null || !unit.isAlive())
        {
            if (interest != null)
            {
                LastHeadline = CameraDirector.FormatWatchTip(interest);
                LastDetail = "";
                LastCaptionText = LastHeadline;
                _current = null;
                ShowNow(LastCaptionText, force: true);
            }

            return;
        }

        SetFromActor(unit, interest?.Tier, interest?.Label);
    }

    public static void SetFromActor(Actor actor, InterestTier? tier = null, string label = null)
    {
        UnitDossier dossier = UnitDossier.FromActor(actor, tier, label);
        _current = dossier;
        LastHeadline = dossier.Headline ?? "";
        LastDetail = dossier.DetailLine ?? "";
        LastCaptionText = dossier.CaptionText ?? "";
        ShowNow(LastCaptionText, force: true);
        LogService.LogInfo("[IdleSpectator][CAPTION] " + LastCaptionText.Replace("\n", " | "));
    }

    public static void Update()
    {
        if (!SpectatorMode.Active || !ModSettings.ShowDossierCaption)
        {
            return;
        }

        if (string.IsNullOrEmpty(LastCaptionText))
        {
            return;
        }

        if (Time.unscaledTime - _lastShownAt < RefreshSeconds)
        {
            return;
        }

        // Refresh so the tip does not fade away during long AFK watches.
        ShowNow(LastCaptionText, force: false);
    }

    private static void ShowNow(string text, bool force)
    {
        if (!ModSettings.ShowDossierCaption || string.IsNullOrEmpty(text))
        {
            return;
        }

        if (!force && Time.unscaledTime - _lastShownAt < 1f)
        {
            return;
        }

        WorldTip.showNow(text, pTranslate: false, pPosition: "top", pTime: RefreshSeconds + 2f);
        _lastShownAt = Time.unscaledTime;
    }
}