fix: confirm email changes and enforce clean backend build

backend/src/Socialize.Api/Modules/CalendarIntegrations/Services/CalendarImportSyncService.cs

@@ -1,15 +1,19 @@
 using Microsoft.EntityFrameworkCore;
 using Socialize.Api.Data;
 using Socialize.Api.Modules.CalendarIntegrations.Data;
+using System.Globalization;
 using System.Text.Json;
 
 namespace Socialize.Api.Modules.CalendarIntegrations.Services;
 
+#pragma warning disable S1075 // Supplemental observance identifiers intentionally use stable URI-like values.
+
 internal sealed class CalendarImportSyncService(
     AppDbContext dbContext,
-    IHttpClientFactory httpClientFactory,
-    IcsCalendarParser parser)
+    IHttpClientFactory httpClientFactory)
 {
+    private static readonly JsonSerializerOptions JsonSerializerOptions = new(JsonSerializerDefaults.Web);
+
     public async Task RefreshSourceAsync(Guid sourceId, CancellationToken ct)
     {
         CalendarSource? source = await dbContext.CalendarSources
@@ -115,7 +119,7 @@ internal sealed class CalendarImportSyncService(
         }
     }
 
-    private async Task<IReadOnlyCollection<ParsedCalendarEvent>> GetParsedEventsAsync(
+    private static async Task<IReadOnlyCollection<ParsedCalendarEvent>> GetParsedEventsAsync(
         HttpClient httpClient,
         string sourceUrl,
         DateOnly rangeStart,
@@ -127,8 +131,8 @@ internal sealed class CalendarImportSyncService(
             return await GetNagerEventsAsync(httpClient, sourceUrl, countryCode!, rangeStart, rangeEnd, ct);
         }
 
-        string content = await httpClient.GetStringAsync(sourceUrl, ct);
-        return parser.Parse(content, rangeStart, rangeEnd);
+        string content = await httpClient.GetStringAsync(new Uri(sourceUrl), ct);
+        return IcsCalendarParser.Parse(content, rangeStart, rangeEnd);
     }
 
     private static async Task<IReadOnlyCollection<ParsedCalendarEvent>> GetNagerEventsAsync(
@@ -143,14 +147,12 @@ internal sealed class CalendarImportSyncService(
         for (int year = rangeStart.Year; year <= rangeEnd.Year; year++)
         {
             string yearUrl = BuildNagerYearUrl(sourceUrl, countryCode, year);
-            string json = await httpClient.GetStringAsync(yearUrl, ct);
-            NagerHoliday[] holidays = JsonSerializer.Deserialize<NagerHoliday[]>(
-                json,
-                new JsonSerializerOptions(JsonSerializerDefaults.Web)) ?? [];
+            string json = await httpClient.GetStringAsync(new Uri(yearUrl), ct);
+            NagerHoliday[] holidays = JsonSerializer.Deserialize<NagerHoliday[]>(json, JsonSerializerOptions) ?? [];
 
             foreach (NagerHoliday holiday in holidays)
             {
-                if (!DateOnly.TryParse(holiday.Date, out DateOnly date) ||
+                if (!DateOnly.TryParse(holiday.Date, CultureInfo.InvariantCulture, out DateOnly date) ||
                     date < rangeStart ||
                     date > rangeEnd)
                 {
@@ -283,7 +285,7 @@ internal sealed class CalendarImportSyncService(
     private static string NormalizeUidPart(string? value)
     {
         return new string((value ?? "holiday")
-            .ToLowerInvariant()
+            .ToUpperInvariant()
             .Select(character => char.IsLetterOrDigit(character) ? character : '-')
             .ToArray())
             .Trim('-');