using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;

public class CrowdManager : MonoBehaviour
{
    public CitizenCrowdMember.SelectableAnimation m_currentAnimation = CitizenCrowdMember.SelectableAnimation.Afraid;
    private CitizenCrowdMember.SelectableAnimation m_previousFrameAnimation = CitizenCrowdMember.SelectableAnimation.Afraid;
    public float m_transitionTime = 1.5f;
    public float m_transitionTimeVariation = 0.5f;
    public float m_transitionStartVariation = 2f;
    public float m_animationSpeedVariation = 0.01f;
    private CitizenCrowdMember[] m_citizenList;
    private float m_timeSinceLastStateChange = 0f;
    private DateTime m_cheerEnd = DateTime.Now;
    private bool m_animationOnTimer = false;
    private CitizenCrowdMember.SelectableAnimation m_nextAnimation = CitizenCrowdMember.SelectableAnimation.Afraid;
    // Start is called before the first frame update
    void Start()
    {
        m_citizenList = GetComponentsInChildren<CitizenCrowdMember>();
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        if(m_animationOnTimer && DateTime.Now > m_cheerEnd)
        {
            m_animationOnTimer = false;
            m_currentAnimation = m_nextAnimation;
        }

        m_timeSinceLastStateChange += Time.deltaTime;
        if(m_previousFrameAnimation != m_currentAnimation){// Detect change
            m_timeSinceLastStateChange = 0f;
            m_previousFrameAnimation = m_currentAnimation;
        }
        for(int i = 0; i < m_citizenList.Length; i++){// Statistically change the state if needed
            if(m_citizenList[i].m_currentAnimation == m_currentAnimation){
                continue;
            }else if(Random.Range(Mathf.Min(m_timeSinceLastStateChange, m_transitionStartVariation), m_transitionStartVariation) > m_transitionStartVariation * 0.995f){
                m_citizenList[i].m_blendingTime = Random.Range(m_transitionTime - m_transitionTimeVariation, m_transitionTime + m_transitionTimeVariation);
                m_citizenList[i].m_currentAnimation = m_currentAnimation;
                m_citizenList[i].m_animationSpeedModificator = Random.Range(1 - m_animationSpeedVariation, 1 + m_animationSpeedVariation);
            }
        }
    }

    public void SetAnimationWithTimer(float secs, CitizenCrowdMember.SelectableAnimation newAnimation, CitizenCrowdMember.SelectableAnimation nextAnimation)
    {
        m_cheerEnd = DateTime.Now.AddSeconds(secs);
        m_animationOnTimer = true;
        m_currentAnimation = newAnimation;
        m_nextAnimation = nextAnimation;
    }
}