using Microsoft.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.BI
{
    public class LessonStatisWay
    {
        /// <summary>
        /// 依据学校Id、教师Id统计课例总数
        /// </summary>
        /// <param name="cosmosClient"></param>
        /// <param name="scIds"></param>
        /// <param name="tecIds"></param>
        /// <returns></returns>
        public async static Task<int> GetAll(CosmosClient cosmosClient, List<string> scIds = null, List<string> tecIds = null)
        {
            int totals = 0;
            string sqlTxt = "select count(c.id) as totals from c";
            if (scIds.Count > 0)
            {
                foreach (string sc in scIds)
                {
                    await foreach (var itemTeac in cosmosClient.GetContainer("TEAMModelOS", "School").GetItemQueryStreamIteratorSql(queryText: sqlTxt, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"LessonRecord-{sc}") }))
                    {
                        using var json = await JsonDocument.ParseAsync(itemTeac.Content);
                        if (json.RootElement.TryGetProperty("_count", out JsonElement count) && count.GetInt32() > 0)
                        {
                            foreach (var obj in json.RootElement.GetProperty("Documents").EnumerateArray())
                            {
                                totals += obj.GetProperty("totals").GetInt32();
                            }
                        }
                    }
                }
            }
            if (tecIds.Count > 0)
            {
                foreach (string sc in scIds)
                {
                    string sqlTecTxt = $"select count(c.id) from c where c.id='{sc}'";
                    await foreach (var itemTeac in cosmosClient.GetContainer("TEAMModelOS", "Teacher").GetItemQueryStreamIteratorSql(queryText: sqlTxt, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"LessonRecord") }))
                    {
                        using var json = await JsonDocument.ParseAsync(itemTeac.Content);
                        if (json.RootElement.TryGetProperty("_count", out JsonElement count) && count.GetInt32() > 0)
                        {
                            foreach (var obj in json.RootElement.GetProperty("Documents").EnumerateArray())
                            {
                                totals += obj.GetProperty("totals").GetInt32();
                            }
                        }
                    }
                }
            }

            return totals;
        }

        /// <summary>
        /// 依据学校Id查询学校和学校里面教师的课例统计
        /// </summary>
        /// <param name="cosmosClient"></param>
        /// <param name="schoolId"></param>
        /// <returns></returns>
        public async static Task<int> GetSchoolIdLessonCount(CosmosClient cosmosClient, string schoolId)
        {
            int totals = 0;
            string LessonSqlTxt = "select value(count(c.id)) from c";

            await foreach (var item in cosmosClient.GetContainer("TEAMModelOS", "School").GetItemQueryIteratorSql<int>(queryText: LessonSqlTxt, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"LessonRecord-{schoolId}") }))
            {
                totals += item;
            }

            List<string> tecIdS = new();
            string managerSql = $"SELECT value(c.id) FROM c WHERE ARRAY_CONTAINS(c.roles, 'teacher', true) AND  c.pk = 'Teacher' AND c.status = 'join'";
            await foreach (var item in cosmosClient.GetContainer("TEAMModelOS", "School").GetItemQueryIteratorSql<string>(queryText: managerSql, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"Teacher-{schoolId}") }))
            {
                tecIdS.Add(item);
            }

            foreach (var itemId in tecIdS)
            {
                string tecLessSQL = $"select value(count(c.id)) from c where c.tmdid='{itemId}'";
                await foreach (var itemCount in cosmosClient.GetContainer("TEAMModelOS", "Teacher").GetItemQueryIteratorSql<int>(queryText: tecLessSQL, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey("LessonRecord") }))
                {
                    totals += itemCount;
                }
            }

            return totals;
        }


        /// <summary>
        /// 学校按年级统计课例
        /// </summary>
        /// <param name="records"></param>
        /// <returns></returns>
        public static List<(string name, string periodId, int count)> GetGradeCount(List<LessAnalyse> records)
        {

            List<(string gradeIn, string periodId)> grades = new();
            List<(string name, string periodId, int count)> gCount = new();

            foreach (var record in records)
            {
                foreach (string gId in record.grade)
                {
                    var temp = grades.Find(x => x.gradeIn.Equals(gId) && x.periodId.Equals(record.periodId));
                    if (temp.gradeIn == null && temp.periodId == null)
                    {
                        grades.Add((gId, record.periodId));
                    }
                }
            }
            foreach (var gId in grades)
            {
                var c = records.Where(r => r.grade.Contains(gId.gradeIn) && r.periodId.Equals(gId.periodId)).Count();
                gCount.Add((gId.gradeIn, gId.periodId, c));
            }
            return gCount;
        }
        /// <summary>
        /// 学校按年级统计课例
        /// </summary>
        /// <param name="records"></param>
        /// <returns></returns>
        public static List<(string name, string periodId, int count)> GetGradeCount(List<LessonRecord> records)
        {

            List<(string gradeIn, string periodId)> grades = new();
            List<(string name, string periodId, int count)> gCount = new();

            foreach (var record in records)
            {
                foreach (string gId in record.grade)
                {
                    var temp = grades.Find(x => x.gradeIn.Equals(gId) && x.periodId.Equals(record.periodId));
                    if (temp.gradeIn == null && temp.periodId == null)
                    {
                        grades.Add((gId, record.periodId));
                    }
                }
            }
            foreach (var gId in grades)
            {
                var c = records.Where(r => r.grade.Contains(gId.gradeIn) && r.periodId.Equals(gId.periodId)).Count();
                gCount.Add((gId.gradeIn, gId.periodId, c));
            }
            return gCount;
        }
    }
}