using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using MP.Data.DbModels;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace MP.Data.Repository.MpLand
{
    public class MpLandRepository : IMpLandRepository
    {
        #region Private Fields

        private readonly IConfiguration _configuration;
        private readonly IDbContextFactory<MoonProContext> _ctxFactory;
        private readonly IDbContextFactory<MoonPro_FluxContext> _ctxFactoryFluxLog;
        private readonly IDbContextFactory<MoonPro_STATSContext> _ctxFactoryStats;

        #endregion

        #region Public Constructors

        public MpLandRepository(
            IConfiguration configuration,
            IDbContextFactory<MoonProContext> ctxFactory,
            IDbContextFactory<MoonPro_FluxContext> ctxFactoryFL,
            IDbContextFactory<MoonPro_STATSContext> ctxFactorySta)
        {
            _configuration = configuration;
            _ctxFactory = ctxFactory;
            _ctxFactoryFluxLog = ctxFactoryFL;
            _ctxFactoryStats= ctxFactorySta;
        }

        #endregion

        #region Public Methods

        /// <inheritdoc />
        public async Task<List<DbSizeModel>> AllDbInfoAsync()
        {
            List<DbSizeModel> dbResult = new List<DbSizeModel>();
            string stp_DbInfo = @"
                                ;WITH TableRowCounts AS (
                                    SELECT
                                        t.name AS TableName,
                                        SUM(p.rows) AS RowNum
                                    FROM sys.tables t
                                    JOIN sys.partitions p ON t.object_id = p.object_id
                                    WHERE p.index_id IN (0, 1)
                                    GROUP BY t.name
                                ),
                                LargestTable AS (
                                    SELECT TOP 1 RowNum, TableName
                                    FROM TableRowCounts
                                    ORDER BY RowNum DESC
                                )
                                SELECT
                                    DB_name() as DbName,
                                    CAST(SUM(size) * 8.0 / 1024 AS DECIMAL(18,2)) AS DbSizeMb,
                                    (SELECT COUNT(*) FROM sys.tables) AS NumTables,
                                    (SELECT TableName FROM LargestTable) AS BigTable,
                                    (SELECT RowNum FROM LargestTable) AS BigTableRows
                                FROM sys.master_files
                                WHERE database_id = DB_ID();
                            ";
            try
            {
                if (!string.IsNullOrEmpty(_configuration.GetConnectionString("MP.All")))
                {
                    await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
                    var singleRes = dbCtx
                                .DbSetDbSize
                                .FromSqlRaw(stp_DbInfo)
                                .AsNoTracking()
                                .AsEnumerable()
                                .FirstOrDefault();
                    if (singleRes != null)
                    {
                        dbResult.Add(singleRes);
                    }
                }
                if (!string.IsNullOrEmpty(_configuration.GetConnectionString("MP.Flux")))
                {
                    await using var dbCtx = await _ctxFactoryFluxLog.CreateDbContextAsync();
                    var singleRes = dbCtx
                                .DbSetDbSize
                                .FromSqlRaw(stp_DbInfo)
                                .AsNoTracking()
                                .AsEnumerable()
                                .FirstOrDefault();
                    if (singleRes != null)
                    {
                        dbResult.Add(singleRes);
                    }
                }
                if (!string.IsNullOrEmpty(_configuration.GetConnectionString("MP.Stats")))
                {
                    await using var dbCtx = await _ctxFactoryStats.CreateDbContextAsync();
                    var singleRes = dbCtx
                                .DbSetDbSize
                                .FromSqlRaw(stp_DbInfo)
                                .AsNoTracking()
                                .AsEnumerable()
                                .FirstOrDefault();
                    if (singleRes != null)
                    {
                        dbResult.Add(singleRes);
                    }
                }
            }
            catch
            {
            }
            return dbResult;
        }

        /// <inheritdoc />
        public async Task<List<ConfigModel>> ConfigGetAllAsync()
        {
            await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
            return await dbCtx
                            .DbSetConfig
                            .AsNoTracking()
                            .OrderBy(x => x.Chiave)
                            .ToListAsync() ?? new();
        }

        /// <inheritdoc />
        public async Task<List<MacchineModel>> MacchineGetAllAsync()
        {
            await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
            return await dbCtx
                            .DbSetMacchine
                            .ToListAsync() ?? new();
        }

        /// <inheritdoc />
        public async Task<List<RemoteRebootLogModel>> RemRebootLogGetAllAsync()
        {
            await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
            return await dbCtx
                            .DbSetRemRebLog
                            .AsNoTracking()
                            .OrderByDescending(x => x.IdxReboot)
                            .ToListAsync() ?? new();
        }

        /// <inheritdoc />
        public async Task<List<RemoteRebootLogModel>> RemRebootLogGetLastAsync()
        {
            await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
            return await dbCtx
                            .DbSetRemRebLog
                            .FromSqlRaw("EXEC stp_RRL_getLast")
                            .AsNoTracking()
                            .ToListAsync() ?? new();
        }

        /// <inheritdoc />
        public async Task<List<RemoteRebootLogModel>> RemRebootLogGetLastNoMaccAsync()
        {
            await using var dbCtx = await _ctxFactory.CreateDbContextAsync();
            return await dbCtx
                            .DbSetRemRebLog
                            .FromSqlRaw("EXEC stp_RRL_GetLastNoMachine")
                            .AsNoTracking()
                            .ToListAsync() ?? new();
        }

        #endregion
    }
}