/// <summary>
/// Created by SWAN DEV
/// </summary>

using UnityEngine;

/// DynamicUI UGUI easy stretch for setting the size of RectTransform with respect to the parent RectTransform.
/// ***This scirpt forcibly set the rectTransforms as Stretch-Stretch and then apply the values(Left, Right, Top, Down).
public class DTransformRectStretch : MonoBehaviour
{
    [Tooltip("The RectTransforms to be stretched with the settings in this mono script.")]
    /// The RectTransforms to be stretched with the settings in this mono script.
    public RectTransform[] m_RectTransforms;

    [Tooltip("The left space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.")]
    /// The left space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.
    public float m_Left;

    [Tooltip("The right space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.")]
    /// The right space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.
    public float m_Right;

    [Tooltip("The top space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.")]
    /// The top space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.
    public float m_Top;

    [Tooltip("The bottom space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform")]
    /// The bottom space(unit: pixel) with respect to the sizeDelta(rect) of the parent RectTransform.
    public float m_Bottom;

    [Tooltip("Destroy this script from gameObject after executed?")]
    /// Destroy this script from gameObject after executed?
    public bool m_DestroyOnComplete = true;

    void OnEnable()
    {
        if (m_RectTransforms != null && m_RectTransforms.Length > 0)
        {
            for (int i = 0; i < m_RectTransforms.Length; i++)
            {
                if (m_RectTransforms[i] != null)
                {
                    SetStretch(m_RectTransforms[i], m_Left, m_Right, m_Top, m_Bottom);
                }
            }
        }

        if (m_DestroyOnComplete) Destroy(this);
    }

    public static void SetStretch(RectTransform targetRT, float left = 0, float right = 0, float top = 0, float bottom = 0)
    {
        targetRT.anchorMax = Vector2.one;
        targetRT.anchorMin = Vector2.zero;

        targetRT.offsetMax = new Vector2(-right, -top);
        targetRT.offsetMin = new Vector2(left, bottom);
    }

}