using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Video;
using UnityEngine.UI;

public class MovieController : MonoBehaviour
{
    public VideoPlayer vp;
    public AudioClip clickSound;
    public GameObject playButton;
    public Sprite[] buttonImages;
    public Slider timeSlider;

    public Text totalTimeLabel;
    private int totalTime;
    private int totalMin;
    private int totalSec;

    public Text playTimeLabel;
    private int playTime;
    private int playMin;
    private int playSec;

    public GameObject loopButton;

    public VideoClip[] movies;
    private int currentNum = 0;

    private Canvas canvas;

    private void Start()
    {
        // ④動画の総時間の表示
        totalTime = (int)vp.length;
        totalMin = totalTime / 60;
        totalSec = totalTime % 60;
        totalTimeLabel.text = totalMin + ":" + totalSec.ToString("D2");

        canvas = GetComponent<Canvas>();
    }

    private void Update()
    {
        if(vp.isPlaying)
        {
            // ③タイムスライダー
            timeSlider.maxValue = vp.frameCount;
            timeSlider.value = vp.frame;

            // ⑤動画の再生時間の表示
            // vp.frame・・・＞経過フレーム数
            // vp.frameRate・・・＞フレームレート（１秒間あたりのフレーム更新数）
            // 例；150 / 30 = 5秒
            playTime = (int)(vp.frame / vp.frameRate);
            playMin = playTime / 60;
            playSec = playTime % 60;
            playTimeLabel.text = playMin + ":" + playSec.ToString("D2");
        }

        // ⑩コントローラキャンバスの表示・非表示
        if(Application.isEditor)
        {
            if (Input.GetKeyDown(KeyCode.T))
            {
                if (canvas.enabled)
                {
                    canvas.enabled = false;
                }
                else
                {
                    canvas.enabled = true;
                }
            }
        }
        else
        {
            if(OVRInput.GetDown(OVRInput.Button.Back))
            {
                if (canvas.enabled)
                {
                    canvas.enabled = false;
                }
                else
                {
                    canvas.enabled = true;
                }
            }
        }
    }

    // ①再生＆一時停止
    public void OnPlayButtonClicked()
    {
        AudioSource.PlayClipAtPoint(clickSound, transform.position);

        if(!vp.isPlaying)
        {
            vp.Play();
            playButton.GetComponent<Image>().sprite = buttonImages[1];
        }
        else
        {
            vp.Pause();
            playButton.GetComponent<Image>().sprite = buttonImages[0];
        }
    }

    // ②停止
    public void OnStopButtonClicked()
    {
        AudioSource.PlayClipAtPoint(clickSound, transform.position);
        vp.Stop();
        playButton.GetComponent<Image>().sprite = buttonImages[0];

        // （追加）スラーダーをリセットする。
        timeSlider.value = 0;

        // （追加）動画再生時間をリセットする。
        playMin = 0;
        playSec = 0;
        playTimeLabel.text = playMin + ":" + playSec.ToString("D2");
    }

    // ⑥５秒早送り
    public void OnFastForwardButtonClicked()
    {
        if(vp.isPlaying)
        {
            AudioSource.PlayClipAtPoint(clickSound, transform.position);
            // （考え方）30FPS・・・＞30frame = 1second・・・＞150frame = 5second
            vp.frame += 150;
        }
    }

    // ⑦５秒巻き戻し
    public void OnRewindButtonClicked()
    {
        if (vp.isPlaying)
        {
            AudioSource.PlayClipAtPoint(clickSound, transform.position);
            // （考え方）30FPS・・・＞30frame = 1second・・・＞150frame = 5second
            vp.frame -= 150;
        }
    }

    // ⑧ループ設定
    public void OnLoopButtonClicked()
    {
        AudioSource.PlayClipAtPoint(clickSound, transform.position);

        if(!vp.isLooping)
        {
            vp.isLooping = true;
            loopButton.GetComponent<Image>().color = Color.green;
        }
        else
        {
            vp.isLooping = false;
            loopButton.GetComponent<Image>().color = Color.white;
        }
    }

    // ⑨動画選択（次の動画を再生）
    public void OnNextButtonClicked()
    {
        AudioSource.PlayClipAtPoint(clickSound, transform.position);
        vp.Stop();

        currentNum = (currentNum + 1) % movies.Length;
        vp.clip = movies[currentNum];

        totalTime = (int)vp.clip.length;
        totalMin = totalTime / 60;
        totalSec = totalTime % 60;
        totalTimeLabel.text = totalMin + ":" + totalSec.ToString("D2");

        vp.Play();
        playButton.GetComponent<Image>().sprite = buttonImages[1];
    }
}