using System;
using System.IO;
using UnityEditor;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.LowLevel;

namespace Ironspore.Editor
{
    public static class RecoverySmoke
    {
        static Keyboard keyboard;
        static float began;
        static int step;
        static ProfileStore testStore;
        static Result result;
        public static string Begin()
        {
            var game = GameSession.Active;
            if (!EditorApplication.isPlaying || !game)
                throw new Exception("Play mode required");
            if (game.InField)
                game.EndSortie(true);
            game.SelectedChassis = 2;
            game.StartTrial();
            game.Store.Commit(s => { s.alloy = 0; s.cells = 0; s.blueprints.Clear(); s.unlocked.Clear(); return true; });
            testStore = game.Store;
            result = new Result();
            step = 0;
            began = Time.realtimeSinceStartup;
            keyboard = InputSystem.AddDevice<Keyboard>("RecoverySmokeKeyboard");
            Application.runInBackground = true;
            EditorWindow.GetWindow(Type.GetType("UnityEditor.GameView,UnityEditor")).Focus();
            EditorApplication.update += Tick;
            return "Recovery playback running for approximately 30 seconds.";
        }
        static void Teleport(Vector3 position)
        {
            var pilot = GameSession.Active.Pilot;
            var controller = pilot.GetComponent<CharacterController>();
            controller.enabled = false;
            pilot.transform.position = position;
            controller.enabled = true;
        }
        static void Tick()
        {
            try
            {
                Advance();
            }
            catch (Exception ex) { result.error = ex.ToString(); Finish(); }
        }
        static void Advance()
        {
            var game = GameSession.Active;
            float t = Time.realtimeSinceStartup - began;
            var state = new KeyboardState();
            if (t >= 1 && step == 0)
            {
                Teleport(new Vector3(-8, .1f, -8.3f));
                step++;
            }
            if (t >= 1.2f && t < 1.35f)
                state.Press(Key.E);
            if (t >= 2 && step == 1)
            {
                Teleport(new Vector3(9, .1f, -2.3f));
                step++;
            }
            if (t >= 2.2f && t < 2.35f)
                state.Press(Key.E);
            if (t >= 3 && step == 2)
            {
                result.search = game.Run.cargo.Count == 2;
                if (!result.search)
                    throw new Exception("Two real crate interactions did not produce two stacks.");
                game.SelectedCargo.Add(game.Run.cargo[0].uid);
                game.CloseMenu();
                step++;
            }
            if (t >= 3.5f && t < 9.5f)
                state.Press(Key.G);
            if (t >= 4.3f && step == 3)
            {
                game.Pilot.Damage(5);
                step++;
            }
            if (t >= 4.6f && step == 4)
            {
                result.interruption = game.CargoProgress < .5f && !game.Run.podUsed && game.Run.cargo.Count == 2;
                foreach (var enemy in UnityEngine.Object.FindObjectsByType<EnemyUnit>())
                    enemy.Damage(10000);
                step++;
            }
            if (t >= 9.5f && step == 5)
            {
                result.shipped = game.Run.podUsed && game.Store.Data.blueprints.Count == 1 && game.Run.cargo.Count == 1;
                game.CompleteObjective();
                game.NextZone(0);
                result.crossZone = game.Run.podUsed && game.Run.cargo.Count == 1;
                step++;
            }
            if (t >= 10.5f && step == 6)
            {
                game.Pilot.Damage(10000);
                step++;
            }
            if (t >= 11.5f && step == 7)
            {
                result.loss = testStore.Data.blueprints.Count == 1 && testStore.Data.cells == 0 && testStore.Data.run.cargo.Count == 0 && !testStore.Data.run.active;
                game.StartTrial();
                testStore = game.Store;
                game.Store.Commit(s => { s.cells = 0; return true; });
                foreach (var enemy in UnityEngine.Object.FindObjectsByType<EnemyUnit>())
                    enemy.Damage(10000);
                game.Store.AddCargo("cells", 3, "extraction_sample");
                Teleport(new Vector3(-19, .1f, -8));
                game.World.CallExtraction();
                step++;
            }
            if (t >= 27.5f && step == 8)
            {
                result.arrivalDoesNotBank = game.World.TransportReady && game.Run.active && game.Store.Data.cells == 0;
                step++;
            }
            if (t >= 28 && t < 28.2f)
                state.Press(Key.E);
            if (t >= 29 && step == 9)
            {
                result.boarding = testStore.Data.cells == 3 && !testStore.Data.run.active;
                result.passed = result.search && result.interruption && result.shipped && result.crossZone && result.loss && result.arrivalDoesNotBank && result.boarding;
                Finish();
                return;
            }
            InputSystem.QueueStateEvent(keyboard, state);
            if (t > 35)
                throw new Exception("Recovery playback timeout");
        }
        static void Finish()
        {
            EditorApplication.update -= Tick;
            if (keyboard != null && keyboard.added)
                InputSystem.RemoveDevice(keyboard);
            keyboard = null;
            Directory.CreateDirectory("Docs/QA/Prototype/TestResults");
            File.WriteAllText("Docs/QA/Prototype/TestResults/RecoveryPlayback.json", JsonUtility.ToJson(result, true));
        }
        [Serializable]
        sealed class Result
        {
            public bool passed, search, interruption, shipped, crossZone, loss, arrivalDoesNotBank, boarding;
            public string error;
        }
    }
}