feat: implement NextcloudCalendarService with CalDAV
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
parent
721920fec5
commit
c6a3e9d5d9
2 changed files with 234 additions and 0 deletions
232
Services/NextcloudCalendarService.cs
Normal file
232
Services/NextcloudCalendarService.cs
Normal file
|
|
@ -0,0 +1,232 @@
|
|||
using Ical.Net;
|
||||
using Ical.Net.CalendarComponents;
|
||||
using Ical.Net.DataTypes;
|
||||
using Ical.Net.Serialization;
|
||||
using Microsoft.Extensions.Configuration;
|
||||
using ShiftScheduler.Shared;
|
||||
using System.Net.Http.Headers;
|
||||
using System.Text;
|
||||
using System.Xml.Linq;
|
||||
|
||||
namespace ShiftScheduler.Services;
|
||||
|
||||
public class NextcloudCalendarService(
|
||||
IConfiguration configuration,
|
||||
IHttpClientFactory httpClientFactory,
|
||||
IConfigurationService configurationService) : INextcloudCalendarService
|
||||
{
|
||||
private readonly string _baseUrl = configuration["Nextcloud:BaseUrl"]
|
||||
?? throw new InvalidOperationException("Nextcloud:BaseUrl not configured");
|
||||
private readonly string _username = configuration["Nextcloud:Username"]
|
||||
?? throw new InvalidOperationException("Nextcloud:Username not configured");
|
||||
private readonly string _appPassword = configuration["Nextcloud:AppPassword"]
|
||||
?? throw new InvalidOperationException("Nextcloud:AppPassword not configured");
|
||||
|
||||
private static readonly XNamespace DavNs = "DAV:";
|
||||
private static readonly XNamespace CalDavNs = "urn:ietf:params:xml:ns:caldav";
|
||||
|
||||
public async Task<List<CalendarInfo>> GetCalendarsAsync()
|
||||
{
|
||||
var path = $"/remote.php/dav/calendars/{_username}/";
|
||||
var body = """
|
||||
<?xml version="1.0" encoding="utf-8" ?>
|
||||
<D:propfind xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
|
||||
<D:prop>
|
||||
<D:displayname/>
|
||||
<D:resourcetype/>
|
||||
</D:prop>
|
||||
</D:propfind>
|
||||
""";
|
||||
|
||||
var request = CreateRequest(HttpMethod.Parse("PROPFIND"), path);
|
||||
request.Headers.Add("Depth", "1");
|
||||
request.Content = new StringContent(body, Encoding.UTF8, "application/xml");
|
||||
|
||||
var client = httpClientFactory.CreateClient();
|
||||
var response = await client.SendAsync(request);
|
||||
response.EnsureSuccessStatusCode();
|
||||
|
||||
var xml = await response.Content.ReadAsStringAsync();
|
||||
return ParseCalendarsFromPropfind(xml);
|
||||
}
|
||||
|
||||
public async Task SyncShiftsToCalendarAsync(string calendarId, List<ShiftWithTransport> shifts)
|
||||
{
|
||||
if (shifts.Count == 0) return;
|
||||
|
||||
var minDate = shifts.Min(s => s.Date).Date;
|
||||
var maxDate = shifts.Max(s => s.Date).Date.AddDays(1);
|
||||
|
||||
await DeleteExistingShiftEventsAsync(calendarId, minDate, maxDate);
|
||||
await Task.Delay(500);
|
||||
await CreateShiftEventsAsync(calendarId, shifts);
|
||||
}
|
||||
|
||||
private List<CalendarInfo> ParseCalendarsFromPropfind(string xml)
|
||||
{
|
||||
var doc = XDocument.Parse(xml);
|
||||
var calendars = new List<CalendarInfo>();
|
||||
|
||||
foreach (var responseElement in doc.Descendants(DavNs + "response"))
|
||||
{
|
||||
var resourceType = responseElement.Descendants(DavNs + "resourcetype").FirstOrDefault();
|
||||
if (resourceType?.Element(CalDavNs + "calendar") == null)
|
||||
continue;
|
||||
|
||||
var href = responseElement.Element(DavNs + "href")?.Value ?? string.Empty;
|
||||
if (string.IsNullOrEmpty(href)) continue;
|
||||
|
||||
var displayName = responseElement.Descendants(DavNs + "displayname").FirstOrDefault()?.Value ?? href;
|
||||
|
||||
calendars.Add(new CalendarInfo { Id = href, Summary = displayName });
|
||||
}
|
||||
|
||||
return calendars;
|
||||
}
|
||||
|
||||
private async Task DeleteExistingShiftEventsAsync(string calendarId, DateTime startDate, DateTime endDate)
|
||||
{
|
||||
var startUtc = startDate.ToUniversalTime().ToString("yyyyMMddTHHmmssZ");
|
||||
var endUtc = endDate.ToUniversalTime().ToString("yyyyMMddTHHmmssZ");
|
||||
|
||||
var body = $"""
|
||||
<?xml version="1.0" encoding="utf-8" ?>
|
||||
<C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
|
||||
<D:prop>
|
||||
<D:getetag/>
|
||||
<C:calendar-data/>
|
||||
</D:prop>
|
||||
<C:filter>
|
||||
<C:comp-filter name="VCALENDAR">
|
||||
<C:comp-filter name="VEVENT">
|
||||
<C:time-range start="{startUtc}" end="{endUtc}"/>
|
||||
</C:comp-filter>
|
||||
</C:comp-filter>
|
||||
</C:filter>
|
||||
</C:calendar-query>
|
||||
""";
|
||||
|
||||
var reportRequest = CreateRequest(HttpMethod.Parse("REPORT"), calendarId);
|
||||
reportRequest.Headers.Add("Depth", "1");
|
||||
reportRequest.Content = new StringContent(body, Encoding.UTF8, "application/xml");
|
||||
|
||||
var client = httpClientFactory.CreateClient();
|
||||
var reportResponse = await client.SendAsync(reportRequest);
|
||||
reportResponse.EnsureSuccessStatusCode();
|
||||
|
||||
var xml = await reportResponse.Content.ReadAsStringAsync();
|
||||
var eventUrls = ParseShiftEventUrls(xml);
|
||||
|
||||
foreach (var url in eventUrls)
|
||||
{
|
||||
var deleteRequest = CreateRequest(HttpMethod.Delete, url);
|
||||
var deleteResponse = await client.SendAsync(deleteRequest);
|
||||
|
||||
if (!deleteResponse.IsSuccessStatusCode &&
|
||||
deleteResponse.StatusCode != System.Net.HttpStatusCode.NotFound)
|
||||
deleteResponse.EnsureSuccessStatusCode();
|
||||
|
||||
if (eventUrls.Count > 1)
|
||||
await Task.Delay(200);
|
||||
}
|
||||
}
|
||||
|
||||
private List<string> ParseShiftEventUrls(string xml)
|
||||
{
|
||||
var doc = XDocument.Parse(xml);
|
||||
var urls = new List<string>();
|
||||
|
||||
foreach (var responseElement in doc.Descendants(DavNs + "response"))
|
||||
{
|
||||
var calendarData = responseElement
|
||||
.Descendants(CalDavNs + "calendar-data")
|
||||
.FirstOrDefault()?.Value;
|
||||
|
||||
if (calendarData == null || !calendarData.Contains("X-SHIFT-SCHEDULER:TRUE"))
|
||||
continue;
|
||||
|
||||
var href = responseElement.Element(DavNs + "href")?.Value;
|
||||
if (!string.IsNullOrEmpty(href))
|
||||
urls.Add(href);
|
||||
}
|
||||
|
||||
return urls;
|
||||
}
|
||||
|
||||
private async Task CreateShiftEventsAsync(string calendarId, List<ShiftWithTransport> shifts)
|
||||
{
|
||||
var client = httpClientFactory.CreateClient();
|
||||
|
||||
foreach (var shiftWithTransport in shifts)
|
||||
{
|
||||
var shift = shiftWithTransport.Shift;
|
||||
var date = shiftWithTransport.Date;
|
||||
|
||||
if (string.IsNullOrEmpty(shift.MorningTime) && string.IsNullOrEmpty(shift.AfternoonTime))
|
||||
continue;
|
||||
|
||||
if (!string.IsNullOrEmpty(shift.MorningTime))
|
||||
{
|
||||
var (startTime, endTime) = configurationService.GetZurichTime(
|
||||
DateOnly.FromDateTime(date), shift.MorningTime);
|
||||
var uid = $"shift-{SanitizeForUid(shift.Name)}-{date:yyyyMMdd}-morning";
|
||||
var eventData = CalendarEventBuilder.BuildEventContent(shift, shiftWithTransport.MorningTransport);
|
||||
var icsContent = BuildIcsContent(uid, eventData, startTime, endTime);
|
||||
|
||||
var putRequest = CreateRequest(HttpMethod.Put, $"{calendarId}{Uri.EscapeDataString(uid)}.ics");
|
||||
putRequest.Content = new StringContent(icsContent, Encoding.UTF8, "text/calendar");
|
||||
(await client.SendAsync(putRequest)).EnsureSuccessStatusCode();
|
||||
}
|
||||
|
||||
if (!string.IsNullOrEmpty(shift.AfternoonTime))
|
||||
{
|
||||
var (startTime, endTime) = configurationService.GetZurichTime(
|
||||
DateOnly.FromDateTime(date), shift.AfternoonTime);
|
||||
var uid = $"shift-{SanitizeForUid(shift.Name)}-{date:yyyyMMdd}-afternoon";
|
||||
var eventData = CalendarEventBuilder.BuildEventContent(shift, shiftWithTransport.AfternoonTransport);
|
||||
var icsContent = BuildIcsContent(uid, eventData, startTime, endTime);
|
||||
|
||||
var putRequest = CreateRequest(HttpMethod.Put, $"{calendarId}{Uri.EscapeDataString(uid)}.ics");
|
||||
putRequest.Content = new StringContent(icsContent, Encoding.UTF8, "text/calendar");
|
||||
(await client.SendAsync(putRequest)).EnsureSuccessStatusCode();
|
||||
}
|
||||
|
||||
if (shifts.Count > 1)
|
||||
await Task.Delay(300);
|
||||
}
|
||||
}
|
||||
|
||||
private static string BuildIcsContent(string uid, CalendarEventData eventData, DateTimeOffset startTime, DateTimeOffset endTime)
|
||||
{
|
||||
var calendar = new Calendar();
|
||||
var vevent = new CalendarEvent
|
||||
{
|
||||
Uid = uid,
|
||||
Summary = eventData.Summary,
|
||||
Description = eventData.Description,
|
||||
DtStart = new CalDateTime(startTime.UtcDateTime, hasTime: true),
|
||||
DtEnd = new CalDateTime(endTime.UtcDateTime, hasTime: true)
|
||||
};
|
||||
vevent.Properties.Add(new Ical.Net.CalendarProperty("X-SHIFT-SCHEDULER", "TRUE"));
|
||||
calendar.Events.Add(vevent);
|
||||
return new CalendarSerializer().SerializeToString(calendar);
|
||||
}
|
||||
|
||||
private static string SanitizeForUid(string name)
|
||||
{
|
||||
return new string(name.Select(c => char.IsLetterOrDigit(c) ? c : '-').ToArray());
|
||||
}
|
||||
|
||||
private HttpRequestMessage CreateRequest(HttpMethod method, string path)
|
||||
{
|
||||
// path may be a URL-path from a CalDAV href ("/remote.php/...") or a full URL
|
||||
var uri = path.StartsWith("http", StringComparison.OrdinalIgnoreCase)
|
||||
? new Uri(path)
|
||||
: new Uri($"{_baseUrl.TrimEnd('/')}{path}");
|
||||
|
||||
var request = new HttpRequestMessage(method, uri);
|
||||
var credentials = Convert.ToBase64String(Encoding.UTF8.GetBytes($"{_username}:{_appPassword}"));
|
||||
request.Headers.Authorization = new AuthenticationHeaderValue("Basic", credentials);
|
||||
return request;
|
||||
}
|
||||
}
|
||||
|
|
@ -15,6 +15,8 @@
|
|||
<PackageReference Include="Ical.Net" Version="5.1.0" />
|
||||
<PackageReference Include="Microsoft.AspNetCore.Authentication.Abstractions" Version="2.3.0" />
|
||||
<PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.3.0" />
|
||||
<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.5" />
|
||||
<PackageReference Include="Microsoft.Extensions.Http" Version="10.0.5" />
|
||||
<PackageReference Include="QuestPDF" Version="2025.7.0" />
|
||||
<PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="9.0.0" />
|
||||
</ItemGroup>
|
||||
|
|
|
|||
Loading…
Reference in a new issue