private string DetermineCulture(DialogContext dc, FindChoicesOptions opt = null)
{
// Note: opt.Locale and Default locale will be considered for deprecation as part of 4.13.
var candidateLocale = dc.GetLocale() ?? opt?.Locale ?? DefaultLocale?.GetValue(dc.State);
var culture = PromptCultureModels.MapToNearestLanguage(candidateLocale);
if (string.IsNullOrEmpty(culture) || !DefaultChoiceOptions.ContainsKey(culture))
{
culture = English;
}
return(culture);
}
/// <summary>
/// Method to generate text from given template and data.
/// </summary>
/// <param name="dialogContext">Context for the current turn of conversation.</param>
/// <param name="template">template to evaluate.</param>
/// <param name="data">data to bind to.</param>
/// <param name="cancellationToken">the <see cref="CancellationToken"/> for the task.</param>
/// <returns>generated text.</returns>
public override Task <object> GenerateAsync(DialogContext dialogContext, string template, object data, CancellationToken cancellationToken = default)
{
var lgOpt = new EvaluationOptions()
{
Locale = dialogContext.GetLocale()
};
try
{
return(Task.FromResult(lg.EvaluateText(template, data, lgOpt)));
}
catch (Exception err)
{
if (!string.IsNullOrEmpty(this.Id))
{
throw new Exception($"{Id}:{err.Message}");
}
throw;
}
}
/// <summary>
/// Method to generate text from given template and data.
/// </summary>
/// <param name="dialogContext">Context for the current turn of conversation.</param>
/// <param name="template">template to evaluate.</param>
/// <param name="data">data to bind to.</param>
/// <param name="cancellationToken">the <see cref="CancellationToken"/> for the task.</param>
/// <returns>generated text.</returns>
public override Task <object> GenerateAsync(DialogContext dialogContext, string template, object data, CancellationToken cancellationToken = default)
{
EventHandler onEvent = (s, e) => RunSync(() => HandlerLGEventAsync(dialogContext, s, e, cancellationToken));
var lgOpt = new EvaluationOptions()
{
Locale = dialogContext.GetLocale(), OnEvent = onEvent
};
try
{
return(Task.FromResult(lg.EvaluateText(template, data, lgOpt)));
}
catch (Exception err)
{
if (!string.IsNullOrEmpty(this.Id))
{
throw new InvalidOperationException($"{Id}:{err.Message}");
}
throw;
}
}
/// <summary>
/// Method to generate text from given template and data.
/// </summary>
/// <param name="dialogContext">Context for the current turn of conversation.</param>
/// <param name="template">template to evaluate.</param>
/// <param name="data">data to bind to.</param>
/// <param name="cancellationToken">the <see cref="CancellationToken"/> for the task.</param>
/// <returns>generated text.</returns>
public override async Task <object> GenerateAsync(DialogContext dialogContext, string template, object data, CancellationToken cancellationToken = default)
{
var lgOpt = new EvaluationOptions()
{
Locale = dialogContext.GetLocale()
};
try
{
var lg = await _lg.Value.ConfigureAwait(false);
return(lg.EvaluateText(template, data, lgOpt));
}
catch (Exception err)
{
if (!string.IsNullOrEmpty(this.Id))
{
throw new InvalidOperationException($"{Id}:{err.Message}");
}
throw;
}
}
/// <summary>
/// Find a language generator that matches the current context locale.
/// </summary>
/// <param name="dialogContext">Context for the current turn of conversation.</param>
/// <param name="template">The template.</param>
/// <param name="data">data to bind to.</param>
/// <param name="cancellationToken">the <see cref="CancellationToken"/> for the task.</param>
/// <returns>The generator.</returns>
public override async Task <object> GenerateAsync(DialogContext dialogContext, string template, object data, CancellationToken cancellationToken = default)
{
// priority
// 1. local policy
// 2. shared policy in turnContext
// 3. default policy
var languagePolicy = this.LanguagePolicy ??
dialogContext.Services.Get <LanguagePolicy>() ??
new LanguagePolicy();
// see if we have any locales that match
var fallbackLocales = new List <string>();
var targetLocale = dialogContext.GetLocale();
if (languagePolicy.ContainsKey(targetLocale))
{
fallbackLocales.AddRange(languagePolicy[targetLocale]);
}
// append empty as fallback to end
if (targetLocale.Length != 0 && languagePolicy.ContainsKey(string.Empty))
{
fallbackLocales.AddRange(languagePolicy[string.Empty]);
}
if (fallbackLocales.Count == 0)
{
throw new InvalidOperationException($"No supported language found for {targetLocale}");
}
var generators = new List <Lazy <LanguageGenerator> >();
foreach (var locale in fallbackLocales)
{
if (this.TryGetGenerator(dialogContext, locale, out Lazy <LanguageGenerator> generator))
{
generators.Add(generator);
}
}
if (generators.Count == 0)
{
throw new InvalidOperationException($"No generator found for language {targetLocale}");
}
var errors = new List <string>();
foreach (var generator in generators)
{
try
{
return(await generator.Value.GenerateAsync(dialogContext, template, data, cancellationToken).ConfigureAwait(false));
}
#pragma warning disable CA1031 // Do not catch general exception types (catch any exception and add it to the errors list).
catch (Exception err)
#pragma warning restore CA1031 // Do not catch general exception types
{
errors.Add(err.Message);
}
}
throw new InvalidOperationException(string.Join(",\n", errors.Distinct()));
}
private string GetCulture(DialogContext dc)
{
// Note: Default locale will be considered for deprecation as part of 4.13.
return(dc.GetLocale() ?? DefaultLocale?.GetValue(dc.State) ?? string.Empty);
}