using System;
using UnityEngine;
using UnityEngine.Video;
using UnityEngine.Events;
using UnityEngine.UI;

[Serializable]
public class StoryPart
{

    public string name;
    public Clickable[] clickables;

    public GameObject root;

    public int minVideoPlayCount = 2;

    // public VideoClip endVideoClip;
    public VideoAsset endVideoAsset;

    // public VideoClip onlyPlayVideo;
    public VideoAsset onlyPlayVideoAsset;

    public UnityEvent OnEnd;
    public UnityEvent OnStart;
}


public class SchoolManager : MonoBehaviour
{

    public StoryPart[] storyParts;

    [SerializeField] private int currentStoryPartIndex = 0;

    private StoryPart CurrentStoryPart => currentStoryPartIndex < storyParts.Length ? storyParts[currentStoryPartIndex] : null;

    [SerializeField] private int currentVideoPlayCount = 0;
    [SerializeField] private bool goBackToMainSceneOnEnd = true;

    [SerializeField] private GameObject endState = null;

    private Animator animator;

    public UnityEvent OnEnd;

    private bool completed = false;

    void Start()
    {
        currentStoryPartIndex = 0;
        currentVideoPlayCount = 0;
        animator = GetComponent<Animator>();
        foreach (var storyPart in storyParts)
        {
            if (storyPart.root == null) continue;
            storyPart.root?.SetActive(false);
            foreach (var clickable in storyPart.clickables)
            {
                clickable.OnVideoPlayed += (Clickable gfc) => OnVideoPlayed();
            }
        }
        CurrentStoryPart?.root?.SetActive(true);

        if (endState != null)
        {
            endState.SetActive(false);
        }
    }

    public void TriggerStartAnimation()
    {
        if (completed) return;
        animator.SetTrigger("Start");
    }

    void OnVideoPlayed()
    {
        currentVideoPlayCount++;
        if (currentVideoPlayCount < CurrentStoryPart.minVideoPlayCount) return;

        CurrentStoryPart.OnEnd?.Invoke();

        currentStoryPartIndex++;
        if (currentStoryPartIndex >= storyParts.Length)
        {
            currentStoryPartIndex = 0;
            CompleteStory();
            return;
        }
        currentVideoPlayCount = 0;

        if (animator != null)
        {
            animator.SetTrigger(CurrentStoryPart.name);
        }
        else
        {
            ShowCurrentStoryPart();
        }
    }

    public void NextStoryPart()
    {
        currentStoryPartIndex++;
        if (currentStoryPartIndex >= storyParts.Length)
        {
            currentStoryPartIndex = 0;
            CompleteStory();
            return;
        }
        currentVideoPlayCount = 0;
        ShowCurrentStoryPart();
    }

    private void CompleteStory()
    {
        completed = true;
        OnEnd?.Invoke();

        if (goBackToMainSceneOnEnd)
        {
            CanvasManager.singleton.GoBackToMainScene();
        }

        if (endState != null)
        {
            endState.SetActive(true);
            foreach (var storyPart in storyParts)
            {
                storyPart.root.SetActive(false);
            }
        }
    }

    public void ShowCurrentStoryPart()
    {
        if (CurrentStoryPart == null) return;

        CurrentStoryPart.OnStart?.Invoke();

        foreach (var storyPart in storyParts)
        {
            storyPart.root.SetActive(false);
        }
        CurrentStoryPart.root.SetActive(true);

        if (CurrentStoryPart.onlyPlayVideoAsset != null)
        {
            CameraManager.singleton.PlayVideo(CurrentStoryPart.onlyPlayVideoAsset, () =>
            {
                NextStoryPart();
            });
        }
    }

    public void JumpToScene(string scene)
    {
        var storyPart = Array.Find(storyParts, s => s.name == scene);
        if (storyPart == null)
        {
            Debug.LogError("Scene not found");
            return;
        }
        currentStoryPartIndex = Array.IndexOf(storyParts, storyPart);
        ShowCurrentStoryPart();
    }

    public void Revolution()
    {
        CanvasManager.singleton.Warning("lancer la révolution ?", () =>
        {
            NextStoryPart();
        });
    }
}