Add calendar integrations and collaboration updates

2026-05-05 15:25:53 -04:00
parent c49f03ec06
commit b66c10b681
82 changed files with 8420 additions and 2048 deletions
--- a/backend/src/Socialize.Api/Modules/CalendarIntegrations/Services/CalendarExportFeedBuilder.cs
+++ b/backend/src/Socialize.Api/Modules/CalendarIntegrations/Services/CalendarExportFeedBuilder.cs
@@ -0,0 +1,80 @@
+using System.Text;
+
+namespace Socialize.Api.Modules.CalendarIntegrations.Services;
+
+public sealed record CalendarExportFeedEvent(
+    string Uid,
+    string Title,
+    DateTimeOffset StartsAt,
+    DateTimeOffset EndsAt,
+    bool IsAllDay,
+    string? Description,
+    string? Url);
+
+public class CalendarExportFeedBuilder
+{
+    public string Build(string calendarName, IReadOnlyCollection<CalendarExportFeedEvent> events)
+    {
+        StringBuilder builder = new();
+        builder.AppendLine("BEGIN:VCALENDAR");
+        builder.AppendLine("VERSION:2.0");
+        builder.AppendLine("PRODID:-//Socialize//User Work Calendar//EN");
+        builder.AppendLine("CALSCALE:GREGORIAN");
+        builder.AppendLine("METHOD:PUBLISH");
+        builder.AppendLine($"X-WR-CALNAME:{EscapeText(calendarName)}");
+
+        foreach (CalendarExportFeedEvent feedEvent in events.OrderBy(calendarEvent => calendarEvent.StartsAt))
+        {
+            builder.AppendLine("BEGIN:VEVENT");
+            builder.AppendLine($"UID:{EscapeText(feedEvent.Uid)}");
+            builder.AppendLine($"DTSTAMP:{FormatUtc(DateTimeOffset.UtcNow)}");
+            builder.AppendLine($"SUMMARY:{EscapeText(feedEvent.Title)}");
+
+            if (feedEvent.IsAllDay)
+            {
+                builder.AppendLine($"DTSTART;VALUE=DATE:{FormatDate(feedEvent.StartsAt)}");
+                builder.AppendLine($"DTEND;VALUE=DATE:{FormatDate(feedEvent.EndsAt)}");
+            }
+            else
+            {
+                builder.AppendLine($"DTSTART:{FormatUtc(feedEvent.StartsAt)}");
+                builder.AppendLine($"DTEND:{FormatUtc(feedEvent.EndsAt)}");
+            }
+
+            if (!string.IsNullOrWhiteSpace(feedEvent.Description))
+            {
+                builder.AppendLine($"DESCRIPTION:{EscapeText(feedEvent.Description)}");
+            }
+
+            if (!string.IsNullOrWhiteSpace(feedEvent.Url))
+            {
+                builder.AppendLine($"URL:{EscapeText(feedEvent.Url)}");
+            }
+
+            builder.AppendLine("END:VEVENT");
+        }
+
+        builder.AppendLine("END:VCALENDAR");
+        return builder.ToString();
+    }
+
+    private static string FormatDate(DateTimeOffset value)
+    {
+        return value.ToString("yyyyMMdd", System.Globalization.CultureInfo.InvariantCulture);
+    }
+
+    private static string FormatUtc(DateTimeOffset value)
+    {
+        return value.UtcDateTime.ToString("yyyyMMdd'T'HHmmss'Z'", System.Globalization.CultureInfo.InvariantCulture);
+    }
+
+    private static string EscapeText(string value)
+    {
+        return value
+            .Replace("\\", "\\\\")
+            .Replace("\r\n", "\\n")
+            .Replace("\n", "\\n")
+            .Replace(";", "\\;")
+            .Replace(",", "\\,");
+    }
+}