using UnityEngine;
using UnityEngine.UI;
using System.IO;

namespace InterfaceOff
{
    [System.Serializable] public struct TriviaQuestion
    {
        /* Disables name warnings because of JSON serialization */
        
        // ReSharper disable once InconsistentNaming
        public string question;
        
        // ReSharper disable once InconsistentNaming
        public string[] choices;
        
        // ReSharper disable once InconsistentNaming
        public string answer;
    }

    [System.Serializable] public struct TriviaSet
    {
        /* Disables name warnings because of JSON serialization */
        
        // ReSharper disable once InconsistentNaming
        public TriviaQuestion[] questions;
    }

    public class TriviaWindow : WindowBase
    {
        private static TriviaSet Trivia;

        private static Vector2[] Positions { get; } =
        {
            new(-110, 30f),
            new(110f, 30f),
            new(-110, -60),
            new(110f, -60)
        };
        
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
        private static void LoadTriviaSet()
        {
            string path = Application.streamingAssetsPath + "/Trivia.json";
            string json = File.ReadAllText(path);
            
            Trivia = JsonUtility.FromJson<TriviaSet>(json);
        }

        public override void OnWindowInstantiation()
        {
            /* Fetches a random question and sets it as the title */
            TriviaQuestion question = Trivia.questions[Random.Range(0, Trivia.questions.Length)];
            Components.InfoText.text = question.question;
            Components.SetWidth(500); // Larger width is needed for this component that others
            
            /* Adds the answer boxes */
            for (int i = 0; i < 4; i++)
            {
                /* Creates the gameobject and fetches the needed components */
                GameObject go = Instantiate(PrefabRegistry.Instance.TextButtonPrefab, transform);
                Text text = go.GetComponentInChildren<Text>();
                Button button = go.GetComponent<Button>();
                
                /* Assigns needed info to the components */
                text.text = question.choices[i];

                RectTransform buttonTransform = button.GetComponent<RectTransform>();
                buttonTransform.anchoredPosition = Positions[i];
                buttonTransform.sizeDelta = new Vector2(200, 60);
                
                /* Adds a lambda function to the button press to detect answers */
                bool isCorrectButton = string.Equals(question.choices[i], question.answer);
                button.onClick.AddListener(() =>
                {
                    if (isCorrectButton)
                    {
                        DestroyWindow();
                    }
                });
            }
        }

        public override void OnWindowCloseButtonClicked() { }
    }
}