#nullable enable
using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

[Serializable]
public class ObjectPresentation
{
    public string name;
    public RawImage image;
    public TMPro.TextMeshProUGUI text;

    public GameObject root;

    public ObjectPresentation(
        string name,
        RawImage image,
        TMPro.TextMeshProUGUI text,
        GameObject root
    )
    {
        this.name = name;
        this.image = image;
        this.text = text;
        this.root = root;
    }
}

public class ObjectZoomPanel : MonoBehaviour
{

    public List<ObjectPresentation> objectPresentations;


    public Dictionary<string, ObjectPresentation> objectPresentationDict;

    void BuildDic()
    {
        objectPresentationDict = new Dictionary<string, ObjectPresentation>();
        foreach (ObjectPresentation objectPresentation in objectPresentations)
        {
            objectPresentationDict[objectPresentation.name] = objectPresentation;
        }
    }

    private void SetImageDim(RawImage image, Texture texture)
    {
        image.texture = texture;

        // Get the RectTransforms
        RectTransform rectTransform = image.GetComponent<RectTransform>();
        RectTransform parentRectTransform = rectTransform.parent as RectTransform;

        // Get the size of the parent RectTransform
        float parentWidth = parentRectTransform.rect.width;
        float parentHeight = parentRectTransform.rect.height;

        // Calculate the aspect ratio of the image
        float imageAspectRatio = (float)texture.width / texture.height;
        float parentAspectRatio = parentWidth / parentHeight;

        float newWidth, newHeight;

        // Fit the image to the parent while maintaining aspect ratio
        if (imageAspectRatio > parentAspectRatio)
        {
            // Image is wider relative to its height than the parent
            newWidth = parentWidth;
            newHeight = parentWidth / imageAspectRatio;
        }
        else
        {
            // Image is taller relative to its width than the parent
            newWidth = parentHeight * imageAspectRatio;
            newHeight = parentHeight;
        }


        // fit new image size to parent size

        // Set the size of the RectTransform to the new size
        rectTransform.sizeDelta = new Vector2(newWidth, newHeight);

        // Center the RectTransform in the parent
        rectTransform.anchoredPosition = Vector2.zero;
    }

    public void SetImage(ClickableZoom clickableZoom)
    {
        if (objectPresentationDict == null || objectPresentationDict.Count == 0) BuildDic();

        ObjectPresentation objectPresentation = objectPresentationDict["horizontal"];

        if (clickableZoom.text.Split("\n").Length > 2 || !clickableZoom.Horizontal)
        {
            objectPresentation = objectPresentationDict["vertical"];
        }

        foreach (ObjectPresentation op in objectPresentations)
        {
            op.root.SetActive(op == objectPresentation);
        }

        SetImageDim(objectPresentation.image, clickableZoom.fullImage);
        objectPresentation.text.text = clickableZoom.text;
    }
}