using NEG.Utils.Achievments.AchievmentTypes;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

namespace NEG.Utils.Achievments
{
    [CreateAssetMenu(menuName = "Achievments/Config/Backend/Local")]
    public class LocalBackendConfig : ScriptableObject, IAchievmentBackendConfig
    {
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterAssembliesLoaded)]
        private static void Init()
        {
#if LOCAL_ACHIEVMENT_BACKEND
            Achievment.BackendLabel = "LocalAchievments";
#endif
        }

        [SerializeField]
        private string saveLocation;

        public IAchievmentBackend ConstructBackend()
        {
            return new LocalBackend(saveLocation);
        }
    }

    /// <summary>
    /// This backend is not optimised at all, do not use in public builds
    /// </summary>
    public class LocalBackend : IAchievmentBackend
    {
        private string saveLocation;

        public LocalBackend(string saveLocation) 
        { 
            this.saveLocation = saveLocation;
        }

        public void AchievmentCompleted(AchievmentData achievment)
        {
            string id = achievment.Achievment.Id;
            JObject jobj = LoadJson();

            JToken token = jobj[id];

            if (token is not JObject achievmentObj)
            {
                achievmentObj = new JObject();
            }

            achievmentObj["completed"] = true;

            jobj[id] = achievmentObj;

            SaveJson(jobj);
        }

        public void AchievmentStateChanged(AchievmentData achievment)
        {
            string id = achievment.Achievment.Id;
            JObject jobj = LoadJson();

            JToken token = jobj[id];

            if (token is not JObject achievmentObj)
            {
                achievmentObj = new JObject();
            }

            switch (achievment) 
            {
                case IntAchievmentData intAchievment:
                    achievmentObj["data"] = intAchievment.CurrentProgress;
                    break;
                case FloatAchievmentData floatAchievment:
                    achievmentObj["data"] = floatAchievment.CurrentProgress;
                    break;
                case ToggleAchievmentData toggleAchievment:
                    achievmentObj["data"] = toggleAchievment.IsCompleted;
                    break;
            }

            jobj[id] = achievmentObj;

            SaveJson(jobj);
        }

        public AchievmentData GetStoredAchivment(AchievmentDefinition definition)
        {
            JObject jobj = LoadJson();

            JToken token = jobj[definition.Id];

            if (token is not JObject)
            {
                return null;
            }

            AchievmentData achievment = definition.Construct();

            switch (achievment)
            {
                case IntAchievmentData intAchievment:
                    intAchievment.CurrentProgress = (int)token["data"];
                    break;
                case FloatAchievmentData floatAchievment:
                    floatAchievment.CurrentProgress = (float)token["data"];
                    break;
                case ToggleAchievmentData toggleAchievment:
                    toggleAchievment.CompletionState = (bool)token["data"];
                    break;
            }

            return achievment;
        }

        public void Update()
        {
            //Nothing here
        }

        private JObject LoadJson()
        {
            if (Directory.Exists(Path.GetDirectoryName(saveLocation)) && File.Exists(saveLocation))
            {
                return JObject.Parse(File.ReadAllText(saveLocation));
            }
            return new JObject();
        }

        private void SaveJson(JObject obj)
        {
            if (!Directory.Exists(Path.GetDirectoryName(saveLocation)))
            {
                Directory.CreateDirectory(Path.GetDirectoryName(saveLocation));
            }

            File.WriteAllText(saveLocation, obj.ToString(Formatting.Indented));
        }
    }
}