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nutchayut
234
OCPP.Core.Management/Controllers/HomeController.Export.cs
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234
OCPP.Core.Management/Controllers/HomeController.Export.cs
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/*
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* OCPP.Core - https://github.com/dallmann-consulting/OCPP.Core
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* Copyright (C) 2020-2021 dallmann consulting GmbH.
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* All Rights Reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Localization;
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using Microsoft.Extensions.Logging;
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using OCPP.Core.Database;
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using OCPP.Core.Management.Models;
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namespace OCPP.Core.Management.Controllers
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{
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public partial class HomeController : BaseController
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{
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const char CSV_Seperator = ';';
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[Authorize]
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public IActionResult Export(string Id, string ConnectorId)
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{
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Logger.LogTrace("Export: Loading charge point transactions...");
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int currentConnectorId = -1;
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int.TryParse(ConnectorId, out currentConnectorId);
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TransactionListViewModel tlvm = new TransactionListViewModel();
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tlvm.CurrentChargePointId = Id;
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tlvm.CurrentConnectorId = currentConnectorId;
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tlvm.ConnectorStatuses = new List<ConnectorStatus>();
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tlvm.Transactions = new List<Transaction>();
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try
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{
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string ts = Request.Query["t"];
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int days = 30;
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if (ts == "2")
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{
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// 90 days
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days = 90;
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tlvm.Timespan = 2;
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}
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else if (ts == "3")
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{
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// 365 days
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days = 365;
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tlvm.Timespan = 3;
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}
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else
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{
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// 30 days
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days = 30;
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tlvm.Timespan = 1;
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}
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string currentConnectorName = string.Empty;
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Logger.LogTrace("Export: Loading charge points...");
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tlvm.ConnectorStatuses = DbContext.ConnectorStatuses.ToList<ConnectorStatus>();
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// Preferred: use specific connector name
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foreach (ConnectorStatus cs in tlvm.ConnectorStatuses)
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{
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if (cs.ChargePointId == Id && cs.ConnectorId == currentConnectorId)
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{
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currentConnectorName = cs.ConnectorName;
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/*
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if (string.IsNullOrEmpty(tlvm.CurrentConnectorName))
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{
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currentConnectorName = $"{Id}:{cs.ConnectorId}";
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}
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*/
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break;
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}
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}
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// default: combined name with charge point and connector
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if (string.IsNullOrEmpty(currentConnectorName))
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{
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tlvm.ChargePoints = DbContext.ChargePoints.ToList<ChargePoint>();
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foreach(ChargePoint cp in tlvm.ChargePoints)
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{
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if (cp.ChargePointId == Id)
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{
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currentConnectorName = $"{cp.Name}:{currentConnectorId}";
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break;
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}
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}
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if (string.IsNullOrEmpty(currentConnectorName))
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{
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// Fallback: ID + connector
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currentConnectorName = $"{Id}:{currentConnectorId}";
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}
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}
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// load charge tags for name resolution
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Logger.LogTrace("Export: Loading charge tags...");
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List<ChargeTag> chargeTags = DbContext.ChargeTags.ToList<ChargeTag>();
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tlvm.ChargeTags = new Dictionary<string, ChargeTag>();
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if (chargeTags != null)
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{
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foreach (ChargeTag tag in chargeTags)
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{
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tlvm.ChargeTags.Add(tag.TagId, tag);
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}
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}
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if (!string.IsNullOrEmpty(tlvm.CurrentChargePointId))
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{
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Logger.LogTrace("Export: Loading charge point transactions...");
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tlvm.Transactions = DbContext.Transactions
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.Where(t => t.ChargePointId == tlvm.CurrentChargePointId &&
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t.ConnectorId == tlvm.CurrentConnectorId &&
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t.StartTime >= DateTime.UtcNow.AddDays(-1 * days))
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.OrderByDescending(t => t.TransactionId)
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.ToList<Transaction>();
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}
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StringBuilder connectorName = new StringBuilder(currentConnectorName);
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foreach (char c in Path.GetInvalidFileNameChars())
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{
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connectorName.Replace(c, '_');
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}
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string filename = string.Format("Transactions_{0}.csv", connectorName);
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string csv = CreateCsv(tlvm, currentConnectorName);
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Logger.LogInformation("Export: File => {0} Chars / Name '{1}'", csv.Length, filename);
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return File(Encoding.GetEncoding("ISO-8859-1").GetBytes(csv), "text/csv", filename);
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}
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catch (Exception exp)
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{
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Logger.LogError(exp, "Export: Error loading data from database");
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}
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return View(tlvm);
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}
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private string CreateCsv(TransactionListViewModel tlvm, string currentConnectorName)
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{
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StringBuilder csv = new StringBuilder(8192);
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csv.Append(EscapeCsvValue(_localizer["Connector"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StartTime"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StartTag"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StartMeter"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StopTime"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StopTag"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["StopMeter"]));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(_localizer["ChargeSum"]));
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if (tlvm != null && tlvm.Transactions != null)
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{
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foreach (Transaction t in tlvm.Transactions)
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{
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string startTag = t.StartTagId;
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string stopTag = t.StopTagId;
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if (!string.IsNullOrEmpty(t.StartTagId) && tlvm.ChargeTags != null && tlvm.ChargeTags.ContainsKey(t.StartTagId))
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{
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startTag = tlvm.ChargeTags[t.StartTagId]?.TagName;
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}
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if (!string.IsNullOrEmpty(t.StopTagId) && tlvm.ChargeTags != null && tlvm.ChargeTags.ContainsKey(t.StopTagId))
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{
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stopTag = tlvm.ChargeTags[t.StopTagId]?.TagName;
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}
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csv.AppendLine();
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csv.Append(EscapeCsvValue(currentConnectorName));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(t.StartTime.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss")));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(startTag));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(string.Format("{0:0.0##}", t.MeterStart)));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(((t.StopTime != null) ? t.StopTime.Value.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss") : string.Empty)));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(stopTag));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(((t.MeterStop != null) ? string.Format("{0:0.0##}", t.MeterStop) : string.Empty)));
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csv.Append(CSV_Seperator);
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csv.Append(EscapeCsvValue(((t.MeterStop != null) ? string.Format("{0:0.0##}", (t.MeterStop - t.MeterStart)) : string.Empty)));
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}
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}
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return csv.ToString();
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}
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private string EscapeCsvValue(string value)
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{
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if (!string.IsNullOrEmpty(value))
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{
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if (value.Contains(CSV_Seperator))
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{
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if (value.Contains('"'))
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{
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// replace '"' with '""'
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value.Replace("\"", "\"\"");
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}
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// put value in "
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value = string.Format("\"{0}\"", value);
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}
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}
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return value;
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}
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}
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}
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