using Azure.Cosmos;
using Microsoft.Azure.WebJobs;
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using TEAMModelOS.SDK.DI;
using TEAMModelOS.SDK.Extension;
using TEAMModelOS.SDK.Helper.Common.CollectionHelper;
using TEAMModelOS.SDK.Models;
using TEAMModelOS.SDK.Models.Cosmos.Common;

namespace TEAMModelFunction
{
    public class StuListService
    {
        public static async Task FixActivity(CosmosClient client, StuListChange stuListChange, string type)
        {
            var query = $"SELECT distinct c.owner, c.id,c.code, c.classes,c.subjects,c.progress,c.scope,c.startTime,c.school,c.creatorId,c.name,c.pk ,c.endTime   FROM c  join A1 in c.classes  where  c.pk='{type}' and A1 in('{stuListChange.listid}') ";
            List<MQActivity> datas = new List<MQActivity>();
            await foreach (var item in client.GetContainer("TEAMModelOS", "Common").GetItemQueryIterator<MQActivity>(queryText: query,
                    requestOptions: new QueryRequestOptions() { PartitionKey = new Azure.Cosmos.PartitionKey($"{type}-{stuListChange.originCode}") }))
            {
                datas.Add(item);
            }
            foreach (MQActivity activity in datas)
            {
                //已经完结的不再允许加入
                if (activity.progress.Equals("finish") || activity.progress.Equals("pending"))
                {
                    continue;
                }
                //学生新加入名单的
                foreach (Students students in stuListChange.stujoin)
                {
                    var stucourse = new StuActivity
                    {
                        id = activity.id,
                        scode = activity.code,
                        name = activity.name,
                        code = $"Activity-{activity.school}-{students.id}",
                        scope = activity.scope, 
                        school = activity.school,
                        creatorId = activity.creatorId,
                        pk = "Activity",
                        type = type,
                        subjects = type.Equals("exam") ? activity.subjects : new List<string>() { "" },
                        startTime = activity.startTime,
                        endTime = activity.endTime,
                        blob=activity.blob,
                        owner= activity.owner
                    };
                    await client.GetContainer("TEAMModelOS", "Student").UpsertItemAsync(stucourse, new PartitionKey(stucourse.code));
                }//tmd新加入的
                foreach (string tmdid in stuListChange.tmdjoin)
                {
                    var stucourse = new StuActivity
                    {
                        id = activity.id,
                        scode = activity.code,
                        name = activity.name,
                        code = $"Activity-{tmdid}",
                        scope = activity.scope,
                        school = activity.school,
                        creatorId = activity.creatorId,
                        pk = "Activity",
                        type = type,
                        subjects = type.ToLower().Equals("exam") ? activity.subjects : new List<string>() { "" },
                        startTime = activity.startTime,
                        endTime = activity.endTime,
                        blob = activity.blob,
                        owner = activity.owner
                    };
                    await client.GetContainer("TEAMModelOS", "Teacher").UpsertItemAsync(stucourse, new PartitionKey(stucourse.code));
                }
            }
        }

        public static async Task FixStuCourse(CosmosClient client, StuListChange stuListChange)
        {
            //1.查找学校或教师的课程是否包含该名单的课程。
            var query = $"select distinct c.code,c.id,c.no,c.name,c.scope, c.creatorId,c.school from c join A0 in c.schedule where A0.stulist = '{stuListChange.listid}'";
            List<Course> courses = new List<Course>();
            if (stuListChange.scope.Equals("school"))
            {
                await foreach (var item in client.GetContainer("TEAMModelOS", "School").GetItemQueryIterator<Course>(queryText: query,
                    requestOptions: new QueryRequestOptions() { PartitionKey = new Azure.Cosmos.PartitionKey($"Course-{stuListChange.originCode}") }))
                {
                    courses.Add(item);
                }
            }
            else
            {
                await foreach (var item in client.GetContainer("TEAMModelOS", "Teacher").GetItemQueryIterator<Course>(queryText: query,
                    requestOptions: new QueryRequestOptions() { PartitionKey = new Azure.Cosmos.PartitionKey($"Course-{stuListChange.originCode}") }))
                {
                    courses.Add(item);
                }
            }
            //2.获取课程的id 并尝试添加或移除对应的学生课程记录StuCourse。
            foreach (var course in courses)
            {
                //学生新加入名单的
                foreach (Students students in stuListChange.stujoin)
                {
                    var stucourse = new StuCourse
                    {
                        id = course.id,
                        scode = course.code,
                        name = course.name,
                        code = $"StuCourse-{course.school}-{students.id}",
                        scope = course.scope,
                        school = course.school,
                        creatorId = course.creatorId,
                        pk = "StuCourse"
                    };
                    await client.GetContainer("TEAMModelOS", "Student").UpsertItemAsync(stucourse, new PartitionKey(stucourse.code));
                }
                //tmd新加入的
                foreach (string tmdid in stuListChange.tmdjoin)
                {
                    var stucourse = new StuCourse
                    {
                        id = course.id,
                        scode = course.code,
                        name = course.name,
                        code = $"StuCourse-{tmdid}",
                        scope = course.scope,
                        school = course.school,
                        creatorId = course.creatorId,
                        pk = "StuCourse"
                    };
                    await client.GetContainer("TEAMModelOS", "Teacher").UpsertItemAsync(stucourse, new PartitionKey(stucourse.code));
                }
                //移除名单的。 在点击相关的课程，再去二次校验是否存在，不存在则再去删除。
                //foreach (var delStu in stuListChange.stuleave)
                //{
                //    await client.GetContainer("TEAMModelOS", "Student").DeleteItemStreamAsync(course.id, new PartitionKey($"Course-{course.school}-{delStu.id}"));
                //}
                //foreach (var delTmd in stuListChange.tmdhleave)
                //{
                //    await client.GetContainer("TEAMModelOS", "Teacher").DeleteItemStreamAsync(course.id, new PartitionKey($"Course-{delTmd}"));
                //}
            }

        }

    }
}