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

namespace XCharts.Runtime
{
    public class AxisContext : MainComponentContext
    {
        internal Orient orient { get; set; }
        public float x { get; internal set; }
        public float y { get; internal set; }
        public float width { get; internal set; }
        public float height { get; internal set; }
        public Vector3 position { get; internal set; }
        public float left { get; internal set; }
        public float right { get; internal set; }
        public float bottom { get; internal set; }
        public float top { get; internal set; }
        /// <summary>
        /// the current minimun value.
        /// |当前最小值。
        /// </summary>
        public double minValue { get; internal set; }
        /// <summary>
        /// the current maximum value.
        /// |当前最大值。
        /// </summary>
        public double maxValue { get; internal set; }
        /// <summary>
        /// the offset of zero position.
        /// |坐标轴原点在坐标轴的偏移。
        /// </summary>
        public float offset { get; internal set; }
        public double minMaxRange { get; internal set; }
        public float scaleWidth { get; internal set; }
        public float startAngle { get; set; }
        public double pointerValue { get; internal set; }
        public Vector3 pointerLabelPosition { get; internal set; }
        public double axisTooltipValue { get; internal set; }
        public List<string> runtimeData { get { return m_RuntimeData; } }
        public List<double> labelValueList { get { return m_LabelValueList; } }
        public List<ChartLabel> labelObjectList { get { return m_AxisLabelList; } }

        internal List<string> filterData;
        internal bool lastCheckInverse { get; set; }
        internal bool isNeedUpdateFilterData;

        private int filterStart;
        private int filterEnd;
        private int filterMinShow;

        private List<ChartLabel> m_AxisLabelList = new List<ChartLabel>();
        private List<double> m_LabelValueList = new List<double>();
        private List<string> m_RuntimeData = new List<string>();


        internal void Clear()
        {
            m_RuntimeData.Clear();
        }

        private List<string> m_EmptyFliter = new List<string>();
        /// <summary>
        /// 更新dataZoom对应的类目数据列表
        /// </summary>
        /// <param name="dataZoom"></param>
        internal void UpdateFilterData(List<string> data, DataZoom dataZoom)
        {
            int start = 0, end = 0;
            var range = Mathf.RoundToInt(data.Count * (dataZoom.end - dataZoom.start) / 100);
            if (range <= 0)
                range = 1;

            if (dataZoom.context.invert)
            {
                end = Mathf.CeilToInt(data.Count * dataZoom.end / 100);
                start = end - range;
                if (start < 0) start = 0;
            }
            else
            {
                start = Mathf.FloorToInt(data.Count * dataZoom.start / 100);
                end = start + range;
                if (end > data.Count) end = data.Count;
            }

            if (start != filterStart
                || end != filterEnd
                || dataZoom.minShowNum != filterMinShow
                || isNeedUpdateFilterData)
            {
                filterStart = start;
                filterEnd = end;
                filterMinShow = dataZoom.minShowNum;
                isNeedUpdateFilterData = false;

                if (data.Count > 0)
                {
                    if (range < dataZoom.minShowNum)
                    {
                        if (dataZoom.minShowNum > data.Count)
                            range = data.Count;
                        else
                            range = dataZoom.minShowNum;
                    }
                    filterData = data.GetRange(start, range);
                }
                else
                {
                    filterData = data;
                }
            }
            else if (end == 0)
            {
                filterData = m_EmptyFliter;
            }
        }
    }
}