using Microsoft.EntityFrameworkCore;
using System.Data;
using SystemX.Core.DB;
using SystemX.Core.Services;
using WebApi.Library.Enums;
using WebApi.Project.UniqueKeyApi.Models;

namespace WebApi.Project.UniqueKeyApi.Services
{
    public class CPMetaService
    {
        private readonly IServiceScopeFactory _scopeFactory;
        private readonly ConfigService<UniqueKeyApiConfig>? _configService;

        public CPMetaService(IServiceProvider serviceProvider, IServiceScopeFactory scopeFactory, ConfigService<UniqueKeyApiConfig> configSerice)
        {
            _scopeFactory = scopeFactory;
            _configService = configSerice;
        }

        public async Task<Response_SetWbmsMeta> SetWbmsMeta(Request_SetWbmsMeta request, string guid = "")
        {
            Response_SetWbmsMeta response = new Response_SetWbmsMeta();

            if (request != null)
            {
                response.ProductID = request.ProductID;

                bool transactionResult = true;
                using (var scope = _scopeFactory.CreateScope())
                {
                    int shardId = request.ShardID;
                    if (shardId <= 0)
                        shardId = 1;

                    var provider = scope.ServiceProvider.GetRequiredService<DbContextProvider>();
                    using (var context = GetCPMetaDBContext(provider, shardId))
                    {
                        if (context is not null)
                        {
                            var data = await context.tWbms.AsNoTracking().Where(x => x.cProductID == request.ProductID)?.FirstOrDefaultAsync();
                            if (data is not null)   //update
                            {
                                var selected = await context.tWbms.FirstOrDefaultAsync(x => x.cProductID == request.ProductID);
                                if (selected != null)
                                {
                                    selected.cMacAddress1 = request.MacAddress1;
                                    selected.cMacAddress2 = request.MacAddress2;
                                    selected.cType = request.Type;
                                    selected.cProductNo = request.ProductNo;
                                    selected.cSpareValue = request.SpareValue;

                                    selected.cDateTime = DateTime.Now;

                                    using (var transaction = await context.CreateTransactionAsync())
                                    {
                                        context.Update(selected);
                                        transactionResult = await context.CloseTransactionAsync(transaction);
                                    }
                                }

                                LogXnet.WriteLine($"Update::{guid}", LogXLabel.DB);
                                response.Result = WebApiResult.Update.ToString();
                            }
                            else //insert
                            {
                                var row = new tWbms
                                {
                                    cProductID = request.ProductID,
                                    cMacAddress1 = request.MacAddress1,
                                    cMacAddress2 = request.MacAddress2,
                                    cType = request.Type,
                                    cProductNo = request.ProductNo,
                                    cSpareValue = request.SpareValue,

                                    cDateTime = DateTime.Now
                                };

                                using (var transaction = await context.CreateTransactionAsync())
                                {
                                    await context.AddAsync(row);
                                    transactionResult = await context.CloseTransactionAsync(transaction);
                                }

                                LogXnet.WriteLine($"Insert::{guid}", LogXLabel.DB);
                                response.Result = WebApiResult.Success.ToString();
                            }

                            //db error
                            if (transactionResult == false)
                            {                               
                                LogXnet.WriteLine($"Transaction Error::{guid}", LogXLabel.Error);
                                response.Result = WebApiResult.Failed.ToString();
                                response.Message = "Duplicate Mac Address";
                            }
                        }
                        else //invalid shard id
                        {
                            LogXnet.WriteLine($"ShardID Error::{guid}", LogXLabel.Error);
                            response.Result = WebApiResult.Failed.ToString();
                            response.Message = "Invalid shard id";
                        }
                    }
                }
            }

            return response;
        }

        public async Task<Response_GetWbms> GetWbmsMeta(Request_GetWbmsMeta request, string guid = "")
        {
            Response_GetWbms response = new Response_GetWbms();
            response.Wbms = new List<tWbms>();

            if (request != null)
            {
                using (var scope = _scopeFactory.CreateScope())
                {
                    int shardId = request.ShardID;
                    if (shardId <= 0)
                        shardId = 1;

                    var provider = scope.ServiceProvider.GetRequiredService<DbContextProvider>();
                    using (var context = GetCPMetaDBContext(provider, shardId))
                    {
                        if (context is not null)
                        {
                            try
                            {
                                using (var transaction = await context.CreateTransactionAsync(IsolationLevel.ReadUncommitted))
                                {
                                    var data = await context.tWbms.AsNoTracking().Where(x => ((DateOnly)request.StartDateTime) <= DateOnly.FromDateTime(x.cDateTime) && DateOnly.FromDateTime(x.cDateTime) <= ((DateOnly)request.EndDateTime)).ToListAsync();
                                    await context.CloseTransactionAsync(transaction);
                                    if (data != null)
                                    {
                                        if (response.Wbms is not null)
                                        {
                                            response.Wbms.AddRange(data);
                                        }

                                        response.Result = WebApiResult.Success.ToString();
                                    }
                                    else
                                    {
                                        response.Wbms = null;
                                        response.Result = WebApiResult.Failed.ToString();
                                        response.Message = $"Get CPMeta Failed";
                                    }
                                }
                            }
                            catch (Exception e)
                            {
                                response.Wbms = null;
                                response.Result = WebApiResult.Failed.ToString();
                                response.Message = $"Get CPMeta Failed";

                                LogXnet.WriteLine($"GetWbmsMeta By ProductID Transaction Error::{guid}", LogXLabel.Error);
                                LogXnet.WriteLine(e);
                            }
                        }
                        else //invalid shard id
                        {
                            LogXnet.WriteLine($"ShardID Error::{guid}", LogXLabel.Error);
                            response.Result = WebApiResult.Failed.ToString();
                            response.Message = "Invalid shard id";
                        }
                    }
                }
            }

            return response;
        }

        public async Task<Response_GetWbms> GetWbmsMeta(Request_GetWbmsMetaByProductID request, string guid = "")
        {
            Response_GetWbms response = new Response_GetWbms();
            response.Wbms = new List<tWbms>();

            if (request != null)
            {                
                using (var scope = _scopeFactory.CreateScope())
                {
                    int shardId = request.ShardID;
                    if (shardId <= 0)
                        shardId = 1;

                    var provider = scope.ServiceProvider.GetRequiredService<DbContextProvider>();
                    using (var context = GetCPMetaDBContext(provider, shardId))
                    {
                        if (context is not null)
                        {
                            try
                            {
                                using (var transaction = await context.CreateTransactionAsync(IsolationLevel.ReadUncommitted))
                                {
                                    var data = await context.tWbms.AsNoTracking().FirstOrDefaultAsync(x => x.cProductID.ToLower() == request.ProductID.ToLower());
                                    await context.CloseTransactionAsync(transaction);
                                    if (data != null)
                                    {
                                        if(response.Wbms is not null)
                                        {
                                            response.Wbms.Add(data);
                                        }

                                        response.Result = WebApiResult.Success.ToString();
                                    }
                                    else
                                    {
                                        response.Wbms = null;
                                        response.Result = WebApiResult.Failed.ToString();
                                        response.Message = $"Not exist productID: {request.ProductID}";                                       
                                    }
                                }
                            }
                            catch (Exception e)
                            {
                                response.Wbms = null;
                                response.Result = WebApiResult.Failed.ToString();
                                response.Message = $"Not exist productID: {request.ProductID}";

                                LogXnet.WriteLine($"GetWbmsMeta By ProductID Transaction Error::{guid}", LogXLabel.Error);
                                LogXnet.WriteLine(e);
                            }
                        }
                        else //invalid shard id
                        {
                            LogXnet.WriteLine($"ShardID Error::{guid}", LogXLabel.Error);
                            response.Result = WebApiResult.Failed.ToString();
                            response.Message = "Invalid shard id";
                        }
                    }
                }
            }

            return response;
        }

        public async Task<Response_GetWbms> GetWbmsMeta(Request_GetWbmsMetaByMacAddress request, string guid = "")
        {
            Response_GetWbms response = new Response_GetWbms();
            response.Wbms = new List<tWbms>();

            if (request != null)
            {
                using (var scope = _scopeFactory.CreateScope())
                {
                    int shardId = request.ShardID;
                    if (shardId <= 0)
                        shardId = 1;

                    var provider = scope.ServiceProvider.GetRequiredService<DbContextProvider>();
                    using (var context = GetCPMetaDBContext(provider, shardId))
                    {
                        if (context is not null)
                        {
                            try
                            {
                                using (var transaction = await context.CreateTransactionAsync(IsolationLevel.ReadUncommitted))
                                {
                                    var mac1 = await context.tWbms.AsNoTracking().FirstOrDefaultAsync(x => x.cMacAddress1.ToLower() == request.MacAddress.ToLower());
                                    var mac2 = await context.tWbms.AsNoTracking().FirstOrDefaultAsync(x => x.cMacAddress2.ToLower() == request.MacAddress.ToLower());
                                    await context.CloseTransactionAsync(transaction);
                                    if (mac1 is not null)
                                    {
                                        if(response.Wbms is not null)
                                        {
                                            response.Wbms.Add(mac1);
                                        }
                                        response.Result = WebApiResult.Success.ToString();
                                    }
                                    
                                    if(mac2 is not null)
                                    {
                                        if (response.Wbms is not null)
                                        {
                                            response.Wbms.Add(mac2);
                                        }
                                        response.Result = WebApiResult.Success.ToString();
                                    }

                                    if(response.Wbms?.Count <= 0)
                                    {
                                        response.Wbms = null;
                                        response.Result = WebApiResult.Failed.ToString();
                                        response.Message = $"Not exist MacAddress: {request.MacAddress}";
                                    }
                                }
                            }
                            catch (Exception e)
                            {
                                response.Wbms = null;
                                response.Result = WebApiResult.Failed.ToString();
                                response.Message = $"Not exist MacAddrss: {request.MacAddress}";

                                LogXnet.WriteLine($"GetWbmsMeta By MacAddress Transaction Error::{guid}", LogXLabel.Error);
                                LogXnet.WriteLine(e);
                            }
                        }
                        else //invalid shard id
                        {
                            LogXnet.WriteLine($"ShardID Error::{guid}", LogXLabel.Error);
                            response.Result = WebApiResult.Failed.ToString();
                            response.Message = "Invalid shard id";
                        }
                    }
                }
            }

            return response;
        }

        public async Task<Response_GetWbms> GetWbmsLatest(Request_GetWbmsLatest request, string guid = "")
        {
            Response_GetWbms response = new Response_GetWbms();
            response.Wbms = new List<tWbms>();

            if (request != null)
            {
                using (var scope = _scopeFactory.CreateScope())
                {
                    int shardId = request.ShardID;
                    if (shardId <= 0)
                        shardId = 1;

                    var provider = scope.ServiceProvider.GetRequiredService<DbContextProvider>();
                    using (var context = GetCPMetaDBContext(provider, shardId))
                    {
                        if (context is not null)
                        {
                            try
                            {
                                using (var transaction = await context.CreateTransactionAsync(IsolationLevel.ReadUncommitted))
                                {
                                    response.Wbms = await context.tWbms.AsNoTracking().OrderByDescending(x => x.cDateTime).Take(request.Count).ToListAsync();
                                   
                                    await context.CloseTransactionAsync(transaction);
                                    response.Result = WebApiResult.Success.ToString();
                                }
                            }
                            catch (Exception e)
                            {
                                response.Wbms = null;
                                response.Result = WebApiResult.Failed.ToString();

                                LogXnet.WriteLine($"GetWbmsMeta By Latest({request.Count}) Transaction Error::{guid}", LogXLabel.Error);
                                LogXnet.WriteLine(e);
                            }
                        }
                        else //invalid shard id
                        {
                            LogXnet.WriteLine($"ShardID Error::{guid}", LogXLabel.Error);
                            response.Result = WebApiResult.Failed.ToString();
                            response.Message = "Invalid shard id";
                        }
                    }
                }
            }

            return response;
        }


        private CPMetaContext? GetCPMetaDBContext(DbContextProvider provider, int dbID)
        {
            var connectionString = _configService?.GetConfig()?.DataBase?.Find(x => x.DBID == dbID);
            if(connectionString is not null)
                return provider?.GetDBContext<CPMetaContext>((int)connectionString?.DBID);

            return null;
        }
    }
}