using HTEXLib.COMM.Helpers;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TEAMModelOS.SDK.Extension;

namespace TEAMModelOS.SDK.Models.Service
{
    public  sealed class KnowledgeService
    {
        public static List<PointNode> TreeToList(List<PointTree> trees, List<PointNode> nodes/*, List<Block> blocks,HashSet<string> points*/)
        {
            List<PointNode> list = new List<PointNode>();
            trees.ForEach(x => {
                List<string> cids = new List<string>();
                if (x.children.IsNotEmpty())
                {
                    x.children.ForEach(y => { cids.Add(y.id); /*points.Add(y.name); */y.pid=x.id; });
                }
                var node = new PointNode
                {
                    name = x.name,
                    id = x.id,
                    pid = x.pid,
                    cids= cids,
                    used =x.used,
                    link = x.link,
                };
                list.Add(node);
                //blocks.Add(new Block { name= x.name,points=x.nodes.Select(x=>x.name).ToList() });
                //points.Add(x.name);
            });
           
            nodes.AddRange(list);

            foreach (PointTree tree in trees)
            {
                if (null != tree.children && tree.children.Count > 0)
                {
                    TreeToList(tree.children, nodes/*, blocks, points*/);
                }
            }
            return nodes;
        }
        public static List<PointTree> ListToTree(List<PointNode> noes)
        {
            List<PointTree> list = noes.ToJsonString().ToObject<List<PointTree>>();
            var res = from r in list group r by r.id into g select g;
            Dictionary<string, PointTree> blockDict = new Dictionary<string, PointTree>();
            foreach (var s in res)
            {
                blockDict.TryAdd(s.First().id, s.First());
            }
            return GetChild(list, blockDict);
        }
        private static List<PointTree> GetChild(List<PointTree> list, Dictionary<string, PointTree> dict)
        {
            //  list = list.OrderBy(m => m.Order).ToList();
            List<PointTree> trees = new List<PointTree>();
            foreach (PointTree node in list)
            {
                bool flag = dict.TryGetValue(node.pid, out PointTree syllabus);
                if (flag && syllabus != null)
                {
                    syllabus.children.Add(node);
                }
                else
                {
                    trees.Add(node);
                }
            }
            return trees;
        }

        static  public List<string> GetChildIds(PointTree node)
        {
            List<string> childIds = new List<string>();
            if (node.children != null)
            {
                foreach (PointTree child in node.children)
                {
                    childIds.Add(child.id);
                    var cids = GetChildIds(child);
                    childIds.AddRange(cids);
                    child.cids=cids.Count>100 ? child.children.Select(x => x.id).ToList() : cids;
                }
            }
            return childIds;
        }
    }
}