using UnityEngine;

public class EarthMapScrollRect : PinchableScrollRect
{
    RectTransform canvas;
    RectTransform map;

    protected override void Start()
    {
        _minZoom = .25f;
        _maxZoom = 50f;

        canvas = GetComponentInParent<Canvas>().GetComponent<RectTransform>();
        map = transform.Find("ScrollableContent/WorldMap").GetComponent<RectTransform>();

        Debug.Log($"<color=blue>canvas={canvas} map={map} </color>");

        _zoomMode = ZoomMode.RectSize;
        base.Start();

        _initialWidth = 2000;
        _initialHeight = 1000;

        UpdateMargins();
        SetZoom(_currentZoom);

        verticalNormalizedPosition = 0.5f;
        horizontalNormalizedPosition = 0.5f;
    }

    protected override void OnRectTransformDimensionsChange()
    {
#if UNITY_EDITOR
        if (!UnityEditor.EditorApplication.isPlaying)
        {
            base.OnRectTransformDimensionsChange();
            return;
        }
#endif
        UpdateMargins();
        base.OnRectTransformDimensionsChange();
        if (canvas != null && map != null)
            SetZoom(_currentZoom);
    }

    void UpdateMargins()
    {
        if (canvas == null || map == null)
            return;

        float canvasls = canvas.localScale.x;
        float contents = content.lossyScale.x;

        _horizMargin = (transform as RectTransform).rect.width * 0.5f/* / canvas.localScale.x*/;
        _vertMargin = (transform as RectTransform).rect.height * 0.5f/* * canvas.localScale.y*/;
        map.offsetMin = new Vector2(_horizMargin, _vertMargin);
        map.offsetMax = new Vector2(-_horizMargin, -_vertMargin);
    }

    public void DebugReport()
    {
        Debug.Log("EarthMapScrollRect.Debug:");

        Debug.Log($"_initialWidth: {_initialWidth}");
        Debug.Log($"_initialHeight: {_initialHeight}");
        Debug.Log($"_currentZoom: {_currentZoom}");
        Debug.Log($"_targetZoom: {_targetZoom}");
        Debug.Log($"_horizMargin: {_horizMargin}");
        Debug.Log($"_vertMargin: {_vertMargin}");
        Debug.Log($"canvas.localScale: {canvas.localScale}");
        Debug.Log($"scrollrect.lossyScale: { (transform as RectTransform).lossyScale}");
        Debug.Log($"scrollrect.rect: {(transform as RectTransform).rect}");
        Debug.Log($"content.lossyScale: {content.lossyScale}");
        Debug.Log($"content.localScale: {content.localScale}");
        Debug.Log($"content.pivot: {content.pivot}");
        Debug.Log($"content.rect: {content.rect}");
        Debug.Log($"content.sizeDelta: {content.sizeDelta}");
        Debug.Log($"map.rect: {map.rect}");
        Debug.Log($"map.offsetMin: {map.offsetMin}");
        Debug.Log($"map.offsetMax: {map.offsetMax}");

    }
}