using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

namespace TKS.OutGame
{
    /// <summary>
    /// 스킬 화면 검증 캡처(에디터 DataImporter.CaptureSkills 가 SessionState 로 출력 폴더를 넘기면 생성 · 세이브 = 메모리 전용 신규 유저 · PD #1093 B).
    /// ① 스킬 레벨업(영웅 상세 → 팝업 · 액티브 Lv+1 뒤) ② 스킬 버튼(전투 · 관우 선택) ③ 액티브 발동(장비 장판 일갈 · 이름 글자 + 플래시 + 밀기)
    /// ④ 패시브 표시(조운 관통 → 상산의 창 HUD 한 줄). 캡처를 위해 적 1기씩을 아군 앞에 옮겨 둔다(그 밖은 실제 처리).
    /// </summary>
    public class SkillCaptureDriver : MonoBehaviour
    {
        public const string DirKey = "TKS_SKILL_CAPTURE_DIR";
        public string OutputDir;
        public int Width = 720;
        public int Height = 1280;

        readonly List<string> log = new List<string>();
        int shot = 1;

#if UNITY_EDITOR
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
        static void AutoSpawn()
        {
            string dir = UnityEditor.SessionState.GetString(DirKey, "");
            if (string.IsNullOrEmpty(dir)) return;
            UnityEditor.SessionState.EraseString(DirKey);
            var d = new GameObject("SkillCaptureDriver").AddComponent<SkillCaptureDriver>();
            d.OutputDir = dir;
        }
#endif

        IEnumerator Start()
        {
            Directory.CreateDirectory(OutputDir);
            yield return null;
            yield return null;
            var root = OutGameRoot.Instance;
            var cam = Camera.main;
            if (root == null || cam == null)
            {
                Log("FAIL: OutGameRoot 또는 카메라 없음");
                Finish(1);
                yield break;
            }
            var s = root.Session;
            Log("memoryOnly=" + SaveStore.MemoryOnly + " newUser=" + s.IsNewUser + " books=" + s.Save.inv.books.skill + " gold=" + s.Save.gold);

            // ① 스킬 레벨업: 첫 시작 영웅(★3 = 액티브 상한 +1) 액티브 Lv1 → 2
            var id = s.Db.Economy.StartHeroes[0];
            var h = s.Def(id);
            var hs = s.Save.Hero(id);
            root.ShowHero(id);
            yield return Wait();
            Log("skill cap active=" + SkillRules.Cap(s.Db, h, hs, 0) + " passive=" + SkillRules.Cap(s.Db, h, hs, 1) + " star=" + hs.star + " grade=" + hs.grade);
            Log("levelup active → " + (SkillRules.LevelUp(s.Db, s.Save, h, hs, 0) ?? "ok") + " lv=" + hs.skillLv[0] + " books=" + s.Save.inv.books.skill + " gold=" + s.Save.gold);
            s.Commit();
            root.HeroDetail.Refresh();
            root.HeroDetail.OnSkillUp();
            yield return Wait();
            yield return Shot(cam, "skill_levelup_" + id);
            root.CloseModal();

            // 전투 1-1
            root.ShowLobby();
            root.OpenWorldMap();
            yield return Wait();
            var wm = root.Map;
            wm.OpenPopup(0);
            yield return Wait();
            wm.ConfirmPopup();
            var bm = root.Battle;
            float t0 = Time.realtimeSinceStartup;
            while (bm.Phase != BattlePhase.PlayerTurn && Time.realtimeSinceStartup - t0 < 10f) yield return null;
            var byHero = new Dictionary<string, Unit>();
            foreach (var u in bm.Units)
            {
                if (u == null || u.Faction != Faction.Player) continue;
                var us = bm.Skills.Of(u);
                Log("  " + u.DisplayName + " " + u.Type + " active=" + (us != null && us.Active != null ? us.Active.Id + " Lv" + us.ActiveLv : "-") + " passive=" + (us != null && us.Passive != null ? us.Passive.Id + " ×" + us.PassiveMult : "-") + " hp" + u.MaxHp + " @" + u.Position);
                if (us != null) byHero[us.HeroId] = u;
            }

            // ② 스킬 버튼: 관우 선택(다음 행동형 · 사용 가능)
            Unit gy;
            if (byHero.TryGetValue("guanyu", out gy))
            {
                bm.Sling.Select(gy);
                yield return Wait();
                Log("button: " + bm.Hud.SkillButtonText);
                yield return Shot(cam, "skill_button_guanyu");
            }

            // ③ 액티브 발동: 장비 장판 일갈(즉시 · 반경 안 적 밀기 + 이번 적 턴 교전 반응 없음)
            Unit zf;
            if (byHero.TryGetValue("zhangfei", out zf))
            {
                var foe = Nearest(bm, zf);
                if (foe != null) foe.Position = zf.Position + new Vector2(0f, 2f);
                Vector2 before = foe != null ? foe.Position : Vector2.zero;
                bm.Sling.Select(zf);
                yield return null;
                Log("press: " + bm.Hud.PressSkill());
                yield return new WaitForSecondsRealtime(0.18f);
                yield return Shot(cam, "active_zhangfei");
                t0 = Time.realtimeSinceStartup;
                while (bm.Phase != BattlePhase.PlayerTurn && Time.realtimeSinceStartup - t0 < 10f) yield return null;
                Log("pushed " + (foe != null ? foe.DisplayName + " " + before + "→" + foe.Position : "-") + " readyTurn=" + bm.Skills.Of(zf).ReadyTurn + " acted=" + zf.ActedThisTurn);
            }

            // ④ 패시브 표시: 조운 관통(상산의 창 = 넉백 ×) → HUD 한 줄
            Unit zy;
            if (byHero.TryGetValue("zhaoyun", out zy))
            {
                var foe = Nearest(bm, zy);
                if (foe != null)
                {
                    foe.Position = zy.Position + new Vector2(0f, 3.5f);
                    bm.RequestPlayerAction(zy, foe.Position);
                    t0 = Time.realtimeSinceStartup;
                    while (bm.Phase != BattlePhase.PlayerTurn && Time.realtimeSinceStartup - t0 < 10f) yield return null;
                }
                bm.Sling.Select(zy);
                yield return null;
                Log("log: " + string.Join(" / ", bm.Skills.RecentLog(30f, 8).ToArray()));
                Log("msg: " + bm.LastMessage);
                yield return Shot(cam, "passive_zhaoyun");
            }
            Finish(0);
        }

        static Unit Nearest(BattleManager bm, Unit from)
        {
            Unit best = null;
            float bd = float.MaxValue;
            foreach (var e in bm.AliveUnits(Faction.Enemy))
            {
                float d = Vector2.Distance(e.Position, from.Position);
                if (d < bd)
                {
                    bd = d;
                    best = e;
                }
            }
            return best;
        }

        static IEnumerator Wait()
        {
            yield return null;
            yield return new WaitForSecondsRealtime(0.3f);
        }

        IEnumerator Shot(Camera cam, string name)
        {
            string file = Path.Combine(OutputDir, shot.ToString("00") + "_" + name + ".png");
            shot++;
            yield return CaptureUtil.Capture(cam, Width, Height, file);
            Log("shot " + file);
        }

        void Log(string s)
        {
            log.Add(s);
            Debug.Log("[SkillCapture] " + s);
            try
            {
                File.WriteAllLines(Path.Combine(OutputDir, "capture_log.txt"), log.ToArray());
            }
            catch
            {
            }
        }

        void Finish(int code)
        {
            Log("finish code=" + code);
#if UNITY_EDITOR
            UnityEditor.EditorApplication.Exit(code);
#else
            Application.Quit(code);
#endif
        }
    }
}