using Azure.Cosmos;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using TEAMModelOS.SDK.DI;

namespace TEAMModelOS.SDK.Models.Service
{
    public static class ExamService
    {
        public static List<string> getClasses(List<string> cla, List<string> stus)
        {
            List<string> classes = new List<string>();
            try
            {
                if (cla.Count > 0)
                {
                    foreach (string cl in cla)
                    {
                        classes.Add(cl);
                    }
                }
                if (stus.Count > 0)
                {
                    foreach (string stu in stus)
                    {
                        classes.Add(stu);
                    }
                }
                return classes;
            }
            catch (Exception)
            {
                return classes;
            }
        }
        public static async Task deleteAsync(CosmosClient client, string id, string tId)
        {
            List<string> correctIds = new List<string>();
            await foreach (var item in client.GetContainer(Constant.TEAMModelOS, "Teacher").GetItemQueryStreamIterator(queryText: $"select c.id from c where c.cid = '{id}' ", requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"CorrectTask-{tId}") }))
            {
                using var jsonTask = await JsonDocument.ParseAsync(item.ContentStream);
                if (jsonTask.RootElement.TryGetProperty("_count", out JsonElement count) && count.GetUInt16() > 0)
                {
                    var accounts = jsonTask.RootElement.GetProperty("Documents").EnumerateArray();
                    while (accounts.MoveNext())
                    {
                        JsonElement account = accounts.Current;
                        correctIds.Add(account.GetProperty("id").GetString());
                    }
                }
            }
            if (correctIds.Count > 0)
            {
                await client.GetContainer(Constant.TEAMModelOS, "Teacher").DeleteItemsStreamAsync(correctIds, $"CorrectTask-{tId}");

            }
        }
        public static async Task<string> saveMoreAsync(CosmosClient client, DingDing _dingDing, ExamLite trExam)
        {
            try
            {
                trExam.ttl = -1;
                trExam.code = "ExamLite-" + trExam.school;
                trExam.scope = "school";
                long now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
                trExam.createTime = now;
                if (trExam.publish == 1)
                {
                    trExam.progress = "pending";
                }
                else
                {
                    if (trExam.startTime > now)
                    {
                        trExam.progress = "pending";
                    }
                    else
                    {
                        trExam.progress = "going";
                    }
                }
                if (string.IsNullOrEmpty(trExam.id))
                {

                    trExam.id = Guid.NewGuid().ToString();
                    await client.GetContainer("TEAMModelOS", "Common").CreateItemAsync(trExam, new PartitionKey($"{trExam.code}"));
                }
                else
                {
                    await client.GetContainer("TEAMModelOS", "Common").UpsertItemAsync(trExam, new PartitionKey($"{trExam.code}"));
                }
                return trExam.id;
            }
            catch (Exception e)
            {
                await _dingDing.SendBotMsg($"{Environment.GetEnvironmentVariable("Option:Location")}-ExamService-saveMore\n{e.Message}\n{e.StackTrace}", GroupNames.醍摩豆服務運維群組);
                return "";

            }
        }
/*
        public static async Task<string> getKnowledges(List<string> knowledges,List<ExamClassResult> answers ,string sub,List<List<string>> kones,List<double> point) {
            foreach (string k in knowledges)
            {
                double score = 0;
                double allScore = 0;
                int n = 0;
                int count = 0;
                foreach (ExamClassResult result in answers)
                {
                    if (result.subjectId.Equals(sub))
                    {
                        foreach (List<string> str in kones)
                        {
                            if (str.Contains(k))
                            {
                                var itemPersent = str.Count > 0 ? 1 / Convert.ToDouble(str.Count) : 0;
                                allScore += point.Count > 0 ? point[n] * itemPersent : 0;

                                if (result.studentScores.Count > 0)
                                {
                                    score += result.studentScores.Sum(r => r.Sum()) * itemPersent;
                                }
                            }
                            n++;
                        }

                        count += result.studentIds.Count;
                    }
                }
                double per = count > 0 ? Math.Round(score / count, 2) : 0;
            }
        }*/
    }
}