using sam;
using System;
using System.Collections.Generic;
using UnityEngine;

public class HeightDataSetOverlapChecker : MonoBehaviour
{
    List<float> altBottomList, altTopList;
    List<short> durationList;

    struct QuadData
    {
        public float l, r, b, t;
    }

    public void OnProductSelected(ProductData data)
    {
        int n = data.dataPoints.Count;


        ProductUserData ud = data.profile.GetUserData("AltBottom");
        altBottomList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("AltTop");
        altTopList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("DeltaSeconds");
        durationList = (data.userData[ud.fieldIndex] as List<short>);


        QuadData[] quads = new QuadData[n];

        DateTime firstTime = data.dataPoints[0].time;

        for (int i = 0; i < n; i++)
        {
            ProductDataPoint dp = data.dataPoints[i];

            DateTime startTime = dp.time;

            float l = (float)(dp.time - firstTime).TotalSeconds;
            float r = l + durationList[i];
            float b = altBottomList[i];
            float t = altTopList[i];

            quads[i] = new QuadData { l = l, r = r, b = b, t = t };
        }

        for (int i = 0; i < n; i++)
        {
            QuadData q1 = quads[i];
            for (int j = i + 1; j < n; j++)
            {
                QuadData q2 = quads[j];
                if (QuadsIntersect(q1, q2))
                {

                    float a1 = (q1.r - q1.l) * (q1.t - q1.b);
                    float a2 = (q2.r - q2.l) * (q2.t - q2.b);

                    float il = Math.Max(q1.l, q2.l);
                    float ir = Math.Min(q1.r, q2.r);
                    float ib = Math.Max(q1.b, q2.b);
                    float it = Math.Min(q1.t, q2.t);

                    float ai = (ir - il) * (it - ib);

                    float f1 = ai / a1;
                    float f2 = ai / a2;

                    if (f1 > 0.25f && f2 > 0.25f)
                        Debug.LogWarning($"Quads {i} and {j} intersect with fractions: ({f1}, {f2})");

                }
            }
        }
    }

    bool QuadsIntersect(QuadData q1, QuadData q2)
    {
        return !((q1.r < q2.l) || (q2.r < q1.l) || (q1.t < q2.b) || (q2.t < q1.b));
    }
}