using UnityEngine;
using Status;
using ObjectScripts;
using System;

/// <summary>
/// Details sets the model for the corresponding details level, handles animation and sets the color of the object
/// </summary>
public class Details : MonoBehaviour
{
    /// <summary>
    /// Child component for the one model no color
    /// </summary>
    private GameObject LessDetails { get; set; }
    /// <summary>
    /// Child component for the box model for all
    /// </summary>
    private GameObject Block { get; set; }
    /// <summary>
    /// Child component for the one model with color
    /// </summary>
    private GameObject FullModel { get; set; }
    /// <summary>
    /// Current Object
    /// </summary>
    private GameObject Parent { get; set; }
    /// <summary>
    /// DataObject Skript of the Object containing information about the Object (Position, Rotation, Color,..)
    /// </summary>
    private DataObject DataObject { get; set; }
    /// <summary>
    /// Animator Component of the Object
    /// </summary>
    private Animator Animator { get; set; }
    /// <summary>
    /// LODGroup Component of the Object
    /// </summary>
    private LODGroup LODGroup { get; set; }
    /// <summary>
    /// Top Renderer only renderer for single color entities and first color of models with 2 colors
    /// </summary>
    private Renderer TopRenderer { get; set; }
    /// <summary>
    /// Bottom Renderer only used for models with 2 colors
    /// </summary>
    private Renderer BottomRenderer { get; set; }
    /// <summary>
    /// Currently assigned Top color (human top color, entities with only a single color complete color)
    /// </summary>
    private uint OldColorTop { get; set; }
    /// <summary>
    /// Currently assigned Bottom color (human only)
    /// </summary>
    private uint OldColorBot { get; set; }
    /// <summary>
    /// Current State
    /// </summary>
    private int OldState { get; set; }
    /// <summary>
    /// Current Velocity
    /// </summary>
    private double OldVelocity { get; set; }
    /// <summary>
    /// Current Game Velocity
    /// </summary>
    private float OldGameVelocity { get; set; }
    /// <summary>
    /// Hash for finding animator moving bool
    /// </summary>
    private int MoveHash { get; set; }

    // called once at the start
    private void Start()
    {
        DataObject = gameObject.GetComponent<DataObject>();
        Parent = transform.gameObject;
        LODGroup = Parent.GetComponent<LODGroup>();

        // assign models, animator, hash for finding animator bool and renderer depending on Entity type
        switch (DataObject.Type)
        {
            case CSVReader.EntityType.PERSON:
                FullModel = transform.GetChild(0).transform.GetChild(1).gameObject;
                Block = transform.GetChild(1).gameObject;
                LessDetails = transform.GetChild(0).transform.GetChild(2).gameObject;
                TopRenderer = FullModel.transform.GetChild(0).gameObject.GetComponent<Renderer>();
                BottomRenderer = FullModel.transform.GetChild(2).gameObject.GetComponent<Renderer>();
                Animator = transform.GetChild(0).GetComponent<Animator>();
                MoveHash = Animator.StringToHash("moving");
                break;
            case CSVReader.EntityType.CAR:
                FullModel = transform.GetChild(0).gameObject;
                Block = transform.GetChild(1).gameObject;
                LessDetails = transform.GetChild(2).gameObject;
                TopRenderer = transform.GetChild(0).transform.GetChild(0).gameObject.GetComponent<Renderer>();
                Animator = transform.GetChild(0).GetComponent<Animator>();
                MoveHash = Animator.StringToHash("moving");
                break;
            case CSVReader.EntityType.TRUCK:
                FullModel = transform.GetChild(0).gameObject;
                Block = transform.GetChild(1).gameObject;
                LessDetails = transform.GetChild(2).gameObject;
                TopRenderer = transform.GetChild(0).transform.GetChild(0).gameObject.GetComponent<Renderer>();
                Animator = transform.GetChild(0).GetComponent<Animator>();
                MoveHash = Animator.StringToHash("moving");
                break;
            case CSVReader.EntityType.BIKE:
                FullModel = transform.GetChild(0).gameObject;
                Block = transform.GetChild(1).gameObject;
                LessDetails = transform.GetChild(2).gameObject;
                TopRenderer = transform.GetChild(0).transform.GetChild(0).gameObject.GetComponent<Renderer>();
                Animator = transform.GetChild(0).GetComponent<Animator>();
                MoveHash = Animator.StringToHash("moving");
                break;
            default:
                break;
        }


        SetColor(DataObject.TopColor, DataObject.BotColor);
        SetDetails();
        HandleAnimator();
    }
    // called every frame
    void Update()
    {
        bool valid = false;
        // check for color changes and set new color if changed
        if (OldColorTop != DataObject.TopColor || OldColorBot != DataObject.BotColor)
        {
            SetColor(DataObject.TopColor, DataObject.BotColor);
        }
        // check for state changes and set models depending on state
        if (OldState != DetailsLevel.State)
        {
            SetDetails();
            valid = true;
        }

        // check for velocity changes 
        if ((Math.Abs(OldVelocity - DataObject.Velocity) > 0.1) || (DataObject.Handler.GameVelocity != OldGameVelocity))
        {
            valid = true;
        }

        // set animation speed depending on veleocity
        if (valid)
            HandleAnimator();
    }
    // Set colors of the object
    private void SetColor(uint TopColor, uint BotColor)
    {
        // transform uint color to byte argb color
        byte ATop = (byte)(TopColor >> 24 & 255);
        byte RTop = (byte)(TopColor >> 16 & 255);
        byte GTop = (byte)(TopColor >> 8 & 255);
        byte BTop = (byte)(TopColor >> 0 & 255);

        byte ABot = (byte)(BotColor >> 24 & 255);
        byte RBot = (byte)(BotColor >> 16 & 255);
        byte GBot = (byte)(BotColor >> 8 & 255);
        byte BBot = (byte)(BotColor >> 0 & 255);

        // set colors for the two body regions (BottomColor32 only used for human model)
        Color32 TopColor32 = new Color32(RTop, GTop, BTop, ATop);
        Color32 BottomColor32 = new Color32(RBot, GBot, BBot, ABot);
        if (DataObject.Type == CSVReader.EntityType.PERSON)
        {
            // set material colors for top and bottom
            TopRenderer.material.SetColor("_Color", TopColor32);
            BottomRenderer.material.SetColor("_Color", BottomColor32);
        }
        if (DataObject.Type == CSVReader.EntityType.CAR || DataObject.Type == CSVReader.EntityType.TRUCK || DataObject.Type == CSVReader.EntityType.BIKE)
        {
            // set material color     
            TopRenderer.material.SetColor("_Color", TopColor32);
        }
        OldColorTop = DataObject.TopColor;
        OldColorBot = DataObject.BotColor;
    }
    private void SetDetails()
    {
        // set models depending on state
        switch (DetailsLevel.State)
        {
            // LOD groupe active
            case 0:
                LessDetails.SetActive(true);
                Block.SetActive(true);
                FullModel.SetActive(true);
                LODGroup.enabled = true;
                ToggleAnimators(true);
                break;
            // Block mode active
            case 1:
                LessDetails.SetActive(false);
                Block.SetActive(true);
                FullModel.SetActive(false);
                LODGroup.enabled = false;
                ToggleAnimators(false);
                break;
            // One model no color
            case 2:
                Block.SetActive(false);
                FullModel.SetActive(false);
                LessDetails.SetActive(true);
                LODGroup.enabled = false;
                ToggleAnimators(true);
                break;
            // One model different colors active
            case 3:
                LessDetails.SetActive(false);
                Block.SetActive(false);
                FullModel.SetActive(true);
                LODGroup.enabled = false;
                ToggleAnimators(true);
                break;
            default:
                break;
        }
        OldState = DetailsLevel.State;
    }
    // Set animation speed and animation depending on the game and object velocity
    private void HandleAnimator()
    {
        Animator.SetBool(MoveHash, DataObject.Velocity > 0);
        Animator.speed = (float)(DataObject.Handler.GameVelocity * DataObject.Velocity * 0.62);
        OldVelocity = DataObject.Velocity;
        OldGameVelocity = DataObject.Handler.GameVelocity;
    }
    // toggle animator on/off
    private void ToggleAnimators(bool b)
    {
        Animator.enabled = b;
    }

}