using System;
using System.Collections;
using System.Linq;
using Luneraria.Core;
using Luneraria.View;
using NUnit.Framework;
using UnityEngine;
using UnityEngine.TestTools;

namespace Luneraria.UI.Tests
{
    /// <summary>
    /// H1: Sylvara in the real scene. SylvaraHud checks the HUD (four heroes to recruit, the tab
    /// "Ultimate & Skin" with four rule cards and two skin cards, the command slot of the hero
    /// card, commands from the cards) and that her figure, clips and skin material reach the
    /// field. SylvaraBilder is the capture tool for the H1 evidence (1920×1080): recruiting,
    /// the ultimate tab, the planning formation, the leap, the Mondsicheltanz and the Blutmond
    /// skin; -testFilter "Luneraria.UI.Tests.H1HeroViewsTests.SylvaraBilder", LUNE_EVIDENCE
    /// names the folder below docs/port/screenshots (default h1/spiel).
    /// </summary>
    public sealed class H1HeroViewsTests
    {
        static void Send(HudSession s, Command command)
        {
            CommandResult result = s.Match.Submit(HudSession.Human, command);
            Assert.IsTrue(result.Ok, command.Type + ": " + result.Message);
            s.Game.RebuildPreview();
            s.Sync();
        }

        static LuneUnit Hero(HudSession s)
        {
            return s.Match.Combat?.Units.FirstOrDefault(u => u.Kind == "hero" && u.OwnerSlot == HudSession.Human);
        }

        static LuneUnitView ViewOf(LuneUnit unit)
        {
            return UnityEngine.Object.FindObjectsByType<LuneUnitView>(FindObjectsSortMode.None).FirstOrDefault(v => v.Unit == unit);
        }

        /// <summary>Steps the combat in single simulation steps until the condition holds (or the combat ends).</summary>
        static IEnumerator Until(HudSession s, Func<bool> done, double limit = 60.0)
        {
            double time = 0.0;
            while (!done() && time < limit && s.Runner.Current == LuneMatchRunner.Stage.Combat)
            {
                s.Runner.Advance(.05);
                time += .05;
                if ((int)(time / .05) % 10 == 0)
                    yield return null;
            }
            yield return HudSession.Frames(2);
            s.Sync();
        }

        [UnityTest, Timeout(600000)]
        public IEnumerator SylvaraHud()
        {
            var s = new HudSession();
            yield return s.Open(1920, 1080, seed: 4, startRound: 6, extraGold: 1500);
            s.Hud.OpenHero();
            yield return HudSession.Frames(2);
            s.Sync();
            Assert.AreEqual(4, s.Hud.HeroDetail.RecruitButtons.Count, "four heroes to recruit");
            Assert.IsTrue(s.Hud.HeroDetail.RecruitButtons.ContainsKey("held_sylvara"), "Sylvara can be recruited");
            s.Click(s.Hud.HeroDetail.RecruitButtons["held_sylvara"]);
            yield return HudSession.Frames(2);
            s.Sync();
            Assert.AreEqual("held_sylvara", s.Me.Draft.Hero?.HeroId, "the recruit button buys Sylvara");
            s.Hud.OpenHero(LuneHeroDetail.TabUltimate);
            yield return HudSession.Frames(2);
            s.Sync();
            Assert.AreEqual(4, s.Hud.HeroDetail.RuleCards.Count, "four trigger rules");
            Assert.AreEqual(2, s.Hud.HeroDetail.SkinCards.Count, "standard look and Blutmond");
            Assert.IsTrue(s.Hud.HeroDetail.RuleCards["gruppe"].On, "default rule Gruppe is marked");
            s.Click(s.Hud.HeroDetail.RuleCards["zweite_reihe"]);
            yield return HudSession.Frames(2);
            s.Sync();
            Assert.AreEqual("zweite_reihe", s.Me.Draft.Hero.Ultimate, "a rule card sets the rule");
            s.Click(s.Hud.HeroDetail.SkinCards["blutmond"]);
            yield return HudSession.Frames(2);
            s.Sync();
            Assert.AreEqual("blutmond", s.Me.Draft.Hero.Skin, "a skin card sets the skin");
            Assert.IsTrue(HudSession.Visible(s.Hud.HeroCard.CommandSlot), "the hero card shows the ultimate");
            StringAssert.Contains("ZWEITE REIHE", s.Hud.HeroCard.CommandSlot.Text, "the command slot names the rule");
            s.Hud.CloseModal();
            s.Game.Key(KeyCode.Space);
            yield return HudSession.Frames(2);
            LuneUnit hero = Hero(s);
            Assert.IsNotNull(hero, "Sylvara fights");
            Assert.AreEqual("blutmond", hero.Def.Skin);
            yield return HudSession.Frames(3);
            LuneUnitView view = ViewOf(hero);
            Assert.IsNotNull(view, "Sylvara has a view");
            Animator animator = view.GetComponentInChildren<Animator>();
            Assert.IsNotNull(animator, "skinned figure");
            Assert.IsTrue(animator.HasState(0, Animator.StringToHash("leap")) && animator.HasState(0, Animator.StringToHash("ultimate")), "leap and ultimate clips");
            string[] materials = view.GetComponentsInChildren<Renderer>().SelectMany(r => r.sharedMaterials).Where(m => m != null).Select(m => m.name).Distinct().ToArray();
            Assert.Contains("AI_Sylvara_Blutmond", materials, "the Blutmond material is dressed: " + string.Join(", ", materials));
            Assert.Contains("AI_SylvaraSichel_Blutmond", materials, "both sickles in Blutmond");
            yield return Until(s, () => hero.UltimateSerial > 0 || !hero.Alive);
            Assert.IsTrue(hero.UltimateSerial > 0 || !hero.Alive, "the ultimate fires (or Sylvara fell first)");
            if (hero.UltimateSerial > 0)
                StringAssert.Contains("GENUTZT", s.Hud.HeroCard.CommandSlot.Text, "the card reports the fired ultimate");
            s.Close();
        }

        [UnityTest, Timeout(900000), Explicit("Bildwerkzeug: nur gezielt per -testFilter")]
        public IEnumerator SylvaraBilder()
        {
            string evidence = Environment.GetEnvironmentVariable("LUNE_EVIDENCE");
            string folder = "docs/port/screenshots/" + (string.IsNullOrEmpty(evidence) ? "h1/spiel" : evidence) + "/";
            var s = new HudSession();
            yield return s.Open(1920, 1080, seed: 4, startRound: 6, extraGold: 1500);
            yield return s.Starter();
            s.Leave();
            s.Hud.OpenHero();
            yield return new WaitForSecondsRealtime(.6f);
            yield return s.Shot(folder + "01-heldenwahl.png");
            Send(s, Command.HeroBuy("held_sylvara"));
            s.Hud.OpenHero(LuneHeroDetail.TabValues);
            yield return new WaitForSecondsRealtime(.6f);
            yield return s.Shot(folder + "02-heldenfenster.png");
            s.Hud.OpenHero(LuneHeroDetail.TabUltimate);
            yield return new WaitForSecondsRealtime(.8f);
            yield return s.Shot(folder + "03-ultimate-und-skin.png");
            s.Hud.CloseModal();
            yield return new WaitForSecondsRealtime(.3f);
            LuneUnit waiting = s.View.Preview?.Units.FirstOrDefault(u => u.Kind == "hero" && u.OwnerSlot == HudSession.Human);
            Assert.IsNotNull(waiting, "Sylvara in the planning preview");
            s.Rig.LookAt(waiting.Position, 9f, true);
            yield return new WaitForSecondsRealtime(.6f);
            yield return s.Shot(folder + "04-aufstellung.png");
            s.Game.Key(KeyCode.Space);
            yield return HudSession.Frames(2);
            LuneUnit hero = Hero(s);
            yield return Until(s, () => hero.LeapSerial > 0 || !hero.Alive);
            s.Driver.Paused = true;
            s.Rig.LookAt(hero.Position, 11f, true);
            yield return new WaitForSecondsRealtime(.3f);
            yield return s.Shot(folder + "05-mondsprung.png");
            s.Driver.Paused = false;
            yield return Until(s, () => hero.UltimateSerial > 0 || !hero.Alive);
            s.Driver.Paused = true;
            s.Rig.LookAt(hero.Position, 11f, true);
            yield return new WaitForSecondsRealtime(.2f);
            yield return s.Shot(folder + "06-mondsicheltanz.png");
            yield return new WaitForSecondsRealtime(.6f);
            yield return s.Shot(folder + "07-mondsicheltanz-wirbel.png");
            s.Rig.LookAt(hero.Position, 20f, true);
            yield return new WaitForSecondsRealtime(.4f);
            yield return s.Shot(folder + "08-kampf-lane.png");
            s.Driver.Paused = false;
            yield return s.FinishCombat();
            // Space is blocked for a moment after a combat (no accidental skip of the planning).
            float waited = 0f;
            while (s.Hud.ReadyBlocked() && waited < 5f)
            {
                waited += Time.unscaledDeltaTime;
                yield return null;
            }
            Send(s, Command.HeroSkin("blutmond"));
            s.Hud.OpenHero(LuneHeroDetail.TabUltimate);
            yield return new WaitForSecondsRealtime(.8f);
            yield return s.Shot(folder + "09-skin-blutmond-fenster.png");
            s.Hud.CloseModal();
            int round = s.Match.RoundNumber;
            s.Game.Key(KeyCode.Space);
            yield return HudSession.Frames(2);
            Assert.AreEqual(LuneMatchRunner.Stage.Combat, s.Runner.Current, "combat of round " + round);
            hero = Hero(s);
            yield return s.Fight(9.0);
            s.Driver.Paused = true;
            s.Rig.LookAt(hero.Position, 9f, true);
            yield return new WaitForSecondsRealtime(.5f);
            yield return s.Shot(folder + "10-skin-blutmond-kampf.png");
            s.Close();
        }
    }
}