| | | 1 | | using TeleFlow.Framework.Middleware; |
| | | 2 | | using TeleFlow.Framework.Updates; |
| | | 3 | | |
| | | 4 | | namespace TeleFlow.Telegram.I18n.Internal; |
| | | 5 | | |
| | | 6 | | /// <summary> |
| | | 7 | | /// Resolves one locale per Telegram update before handler dispatch, then exposes it synchronously through the scoped ac |
| | | 8 | | /// </summary> |
| | | 9 | | internal sealed class TelegramLocaleMiddleware( |
| | | 10 | | IEnumerable<ILocaleResolver> resolvers, |
| | | 11 | | ITelegramCurrentUpdateAccessor currentUpdate, |
| | | 12 | | LocaleAccessor localeAccessor, |
| | | 13 | | TelegramI18nOptions options) : IUpdateMiddleware |
| | | 14 | | { |
| | 9 | 15 | | private readonly IReadOnlyList<ILocaleResolver> _resolvers = resolvers.ToArray(); |
| | | 16 | | |
| | | 17 | | public async Task InvokeAsync(UpdateContext context, UpdateDelegate next) |
| | | 18 | | { |
| | 9 | 19 | | ArgumentNullException.ThrowIfNull(context); |
| | 9 | 20 | | ArgumentNullException.ThrowIfNull(next); |
| | | 21 | | |
| | 9 | 22 | | var resolutionContext = new LocaleResolutionContext( |
| | 9 | 23 | | currentUpdate.Update, |
| | 9 | 24 | | currentUpdate.User, |
| | 9 | 25 | | currentUpdate.Chat); |
| | 9 | 26 | | var locale = await ResolveAsync(resolutionContext, context.CancellationToken).ConfigureAwait(false); |
| | | 27 | | |
| | 8 | 28 | | localeAccessor.Initialize(locale); |
| | 8 | 29 | | await next(context).ConfigureAwait(false); |
| | 8 | 30 | | } |
| | | 31 | | |
| | | 32 | | private async ValueTask<Locale> ResolveAsync( |
| | | 33 | | LocaleResolutionContext context, |
| | | 34 | | CancellationToken cancellationToken) |
| | | 35 | | { |
| | 22 | 36 | | foreach (var resolver in _resolvers) |
| | | 37 | | { |
| | 3 | 38 | | var locale = await resolver |
| | 3 | 39 | | .TryResolveAsync(context, cancellationToken) |
| | 3 | 40 | | .ConfigureAwait(false); |
| | | 41 | | |
| | 2 | 42 | | if (locale is not null) |
| | | 43 | | { |
| | 1 | 44 | | return locale; |
| | | 45 | | } |
| | | 46 | | } |
| | | 47 | | |
| | 7 | 48 | | return Locale.TryCreate(context.User?.LanguageCode, out var telegramLocale) |
| | 7 | 49 | | ? telegramLocale |
| | 7 | 50 | | : options.FallbackLocale; |
| | 8 | 51 | | } |
| | | 52 | | } |