using System.Linq;
using System.Text;
using Luneraria.Core;
using UnityEngine;

namespace Luneraria.View
{
    /// <summary>
    /// Temporary match readout for U2 (round, phase, buildings, heroes, boss, winner). Not a HUD:
    /// the G3 HUD is ported in U3 and replaces this overlay.
    /// </summary>
    public sealed class LuneDebugOverlay : MonoBehaviour
    {
        public LuneMatchDriver Driver;
        GUIStyle _style;
        GUIContent _content = new GUIContent();
        float _next;

        void OnGUI()
        {
            if (Driver == null || Driver.Runner == null)
                return;
            if (_style == null)
                _style = new GUIStyle(GUI.skin.box) { alignment = TextAnchor.UpperLeft, fontSize = 15, wordWrap = true, padding = new RectOffset(10, 10, 8, 8) };
            // Four refreshes a second: building the text every GUI pass produced garbage each frame.
            if (Time.unscaledTime >= _next)
            {
                _content.text = Text(Driver.Runner);
                _next = Time.unscaledTime + .25f;
            }
            GUI.Box(new Rect(12, 12, 430, 150), _content, _style);
        }

        public static string Text(LuneMatchRunner runner)
        {
            LuneMatch match = runner.Match;
            var text = new StringBuilder();
            text.AppendFormat("U2 Debug (kein HUD) · Runde {0} · {1}\n", match.RoundNumber, runner.Current);
            for (int team = 0; team < 2; team++)
            {
                int towers = match.Map.Buildings.Count(b => b.Team == team && b.Tier != "core" && match.BuildingHp[b.Id] > 0.0);
                double core = match.BuildingHp[team == 0 ? "blau_ancient" : "rot_ancient"];
                text.AppendFormat("{0}: Türme {1}/8 · Ancient {2:0}\n", team == 0 ? "Blau" : "Rot", towers, core);
            }
            if (match.Combat != null)
            {
                int heroes = match.Combat.Units.Count(u => u.Kind == "hero" && u.Alive);
                int boss = match.Combat.Units.Count(u => u.Kind == "boss" && u.Alive);
                text.AppendFormat("Kampf {0:0.0} s · Einheiten {1} · Helden {2} · Boss {3}\n", match.Combat.Elapsed, match.Combat.Units.Count(u => u.IsMobile() && u.Alive), heroes, boss);
            }
            if (match.Phase == Phase.Over)
                text.AppendFormat("Sieger: {0} · {1}", match.Winner == 0 ? "Blau" : match.Winner == 1 ? "Rot" : "Unentschieden", match.EndNote);
            return text.ToString();
        }
    }
}