243 lines
9.4 KiB
C#
243 lines
9.4 KiB
C#
//
|
|
// CalendarApi.cs
|
|
//
|
|
// Author:
|
|
// Paul Schneider <paulschneider@free.fr>
|
|
//
|
|
// Copyright (c) 2015 - 2017 Paul Schneider
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
using System;
|
|
using System.Threading.Tasks;
|
|
using Microsoft.AspNet.Identity;
|
|
using Microsoft.Extensions.Logging;
|
|
using Microsoft.Extensions.OptionsModel;
|
|
using Google.Apis.Auth.OAuth2;
|
|
using Google.Apis.Util.Store;
|
|
using Google.Apis.Calendar.v3;
|
|
using Google.Apis.Calendar.v3.Data;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using Google.Apis.Services;
|
|
|
|
namespace Yavsc.Services
|
|
{
|
|
using System.Threading;
|
|
using Google.Apis.Auth.OAuth2.Flows;
|
|
using Newtonsoft.Json;
|
|
using Yavsc.Helpers;
|
|
using Yavsc.Models;
|
|
using Yavsc.Models.Calendar;
|
|
using Yavsc.ViewModels.Calendar;
|
|
|
|
/// <summary>
|
|
/// Google Calendar API client.
|
|
/// </summary>
|
|
public class CalendarManager : ICalendarManager
|
|
{
|
|
public class ExpiredTokenException : Exception { }
|
|
protected static string scopeCalendar = "https://www.googleapis.com/auth/calendar";
|
|
private string _ApiKey;
|
|
private IAuthorizationCodeFlow _flow;
|
|
private readonly UserManager<ApplicationUser> _userManager;
|
|
|
|
ApplicationDbContext _dbContext;
|
|
|
|
IDataStore _dataStore;
|
|
ILogger _logger;
|
|
|
|
public CalendarManager(IOptions<GoogleAuthSettings> settings,
|
|
UserManager<ApplicationUser> userManager,
|
|
ApplicationDbContext dbContext,
|
|
IDataStore dataStore,
|
|
ILoggerFactory loggerFactory)
|
|
{
|
|
_ApiKey = settings.Value.ApiKey;
|
|
_userManager = userManager;
|
|
_dbContext = dbContext;
|
|
_logger = loggerFactory.CreateLogger<CalendarManager>();
|
|
_dataStore = dataStore;
|
|
_flow = new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
|
|
{
|
|
ClientSecrets = new ClientSecrets
|
|
{
|
|
ClientId = Startup.GoogleSettings.ClientId,
|
|
ClientSecret = Startup.GoogleSettings.ClientSecret
|
|
},
|
|
Scopes = new[] { scopeCalendar },
|
|
DataStore = dataStore
|
|
});
|
|
_logger.LogWarning($"Using Google data store from "+JsonConvert.SerializeObject(_dataStore));
|
|
}
|
|
|
|
/// <summary>
|
|
/// The get cal list URI.
|
|
/// </summary>
|
|
protected static string getCalListUri = "https://www.googleapis.com/calendar/v3/users/me/calendarList";
|
|
/// <summary>
|
|
/// The get cal entries URI.
|
|
/// </summary>
|
|
protected static string getCalEntriesUri = "https://www.googleapis.com/calendar/v3/calendars/{0}/events";
|
|
|
|
/// <summary>
|
|
/// Gets the calendar list.
|
|
/// </summary>
|
|
/// <returns>The calendars.</returns>
|
|
/// <param name="userId">Yavsc user id</param>
|
|
public async Task<CalendarList> GetCalendarsAsync(string userId, string pageToken)
|
|
{
|
|
if (string.IsNullOrWhiteSpace(userId))
|
|
throw new Exception("the user id is not specified");
|
|
var service = await CreateUserCalendarServiceAsync(userId);
|
|
CalendarListResource.ListRequest calListReq = service.CalendarList.List ();
|
|
calListReq.PageToken = pageToken;
|
|
return calListReq.Execute ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a calendar event list, between the given dates.
|
|
/// </summary>
|
|
/// <returns>The calendar.</returns>
|
|
/// <param name="calid">Calendar identifier.</param>
|
|
/// <param name="mindate">Mindate.</param>
|
|
/// <param name="maxdate">Maxdate.</param>
|
|
/// <param name="cred">credential string.</param>
|
|
public async Task<Events> GetCalendarAsync(string calid, DateTime minDate, DateTime maxDate, string pageToken)
|
|
{
|
|
var service = await GetServiceAsync();
|
|
var listRequest = service.Events.List(calid);
|
|
listRequest.PageToken = pageToken;
|
|
listRequest.TimeMin = minDate;
|
|
listRequest.TimeMax = maxDate;
|
|
listRequest.SingleEvents = true;
|
|
return await listRequest.ExecuteAsync();
|
|
}
|
|
public async Task<DateTimeChooserViewModel> CreateViewModelAsync(
|
|
string inputId,
|
|
string calid, DateTime mindate, DateTime maxdate)
|
|
{
|
|
if (calid == null)
|
|
return new DateTimeChooserViewModel
|
|
{
|
|
InputId = inputId,
|
|
MinDate = mindate,
|
|
MaxDate = maxdate
|
|
};
|
|
|
|
var eventList = await GetCalendarAsync(calid, mindate, maxdate, null);
|
|
List<Period> free = new List<Period>();
|
|
List<Period> busy = new List<Period>();
|
|
|
|
foreach (var ev in eventList.Items)
|
|
{
|
|
if (ev.Start.DateTime.HasValue && ev.End.DateTime.HasValue ) {
|
|
DateTime start = ev.Start.DateTime.Value;
|
|
DateTime end = ev.End.DateTime.Value;
|
|
|
|
if (ev.Transparency == "transparent")
|
|
{
|
|
|
|
free.Add(new Period { Start = start, End = end });
|
|
}
|
|
else busy.Add(new Period { Start = start, End = end });
|
|
}
|
|
}
|
|
|
|
return new DateTimeChooserViewModel
|
|
{
|
|
InputId = inputId,
|
|
MinDate = mindate,
|
|
MaxDate = maxdate,
|
|
Free = free.ToArray(),
|
|
Busy = busy.ToArray(),
|
|
FreeDates = free.SelectMany(p => new string[] { p.Start.ToString("dd/MM/yyyy HH:mm"), p.End.ToString("dd/MM/yyyy HH:mm") }).Distinct().ToArray(),
|
|
BusyDates = busy.SelectMany(p => new string[] { p.Start.ToString("dd/MM/yyyy HH:mm"), p.End.ToString("dd/MM/yyyy HH:mm") }).Distinct().ToArray()
|
|
};
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a event in a calendar
|
|
/// <c>calendar.events.insert</c>
|
|
/// </summary>
|
|
/// <param name="calid"></param>
|
|
/// <param name="startDate"></param>
|
|
/// <param name="lengthInSeconds"></param>
|
|
/// <param name="summary"></param>
|
|
/// <param name="description"></param>
|
|
/// <param name="location"></param>
|
|
/// <param name="available"></param>
|
|
/// <returns></returns>
|
|
public async Task<Event> CreateEventAsync(string userId, string calid, DateTime startDate, int lengthInSeconds, string summary, string description, string location, bool available)
|
|
{
|
|
|
|
if (string.IsNullOrWhiteSpace(calid))
|
|
throw new Exception("the calendar identifier is not specified");
|
|
/* var computeService = new BaseClientService.Initializer()
|
|
{
|
|
HttpClientInitializer = credential
|
|
};
|
|
computeService.ApiKey = Startup.GoogleSettings.ApiKey;
|
|
computeService.ApplicationName = "Yavsc"; */
|
|
|
|
var service = await CreateUserCalendarServiceAsync(userId);
|
|
Event ev = new Event
|
|
{
|
|
Start = new EventDateTime { DateTime = startDate },
|
|
End = new EventDateTime { DateTime = startDate.AddSeconds(lengthInSeconds) },
|
|
Summary = summary,
|
|
Description = description
|
|
};
|
|
var insert = service.Events.Insert(ev, calid);
|
|
var inserted = await insert.ExecuteAsync();
|
|
|
|
return inserted;
|
|
}
|
|
CalendarService _service = null;
|
|
public async Task<CalendarService> GetServiceAsync()
|
|
{
|
|
if (_service==null) {
|
|
GoogleCredential credential = await GoogleCredential.GetApplicationDefaultAsync();
|
|
if (credential.IsCreateScopedRequired)
|
|
{
|
|
credential = credential.CreateScoped(scopeCalendar);
|
|
}
|
|
_service = new CalendarService(new BaseClientService.Initializer()
|
|
{
|
|
HttpClientInitializer = credential,
|
|
ApplicationName = "Yavsc"
|
|
});
|
|
}
|
|
return _service;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates Google User Credential
|
|
/// </summary>
|
|
/// <param name="userId">Yavsc use id</param>
|
|
/// <returns></returns>
|
|
public async Task<CalendarService> CreateUserCalendarServiceAsync(string userId)
|
|
{
|
|
var login = await _dbContext.GetGoogleUserLoginAsync(userId);
|
|
var token = await _flow.LoadTokenAsync(login.ProviderKey, CancellationToken.None);
|
|
UserCredential cred = new UserCredential(_flow,login.ProviderKey,token);
|
|
return new CalendarService(new BaseClientService.Initializer()
|
|
{
|
|
HttpClientInitializer = cred,
|
|
ApplicationName = "Yavsc"
|
|
});
|
|
}
|
|
}
|
|
}
|