/// <summary>
/// Initializes a new instance of the <see cref="LanguageGeneratorManager"/> class.
/// </summary>
/// <param name="resourceExplorer">resourceExplorer to manage LG files from.</param>
public LanguageGeneratorManager(ResourceExplorer resourceExplorer)
{
this.resourceExplorer = resourceExplorer;
multilanguageResources = MultiLanguageResourceLoader.Load(resourceExplorer);
// load all LG resources
foreach (var resource in this.resourceExplorer.GetResources("lg"))
{
LanguageGenerators[resource.Id] = GetTemplateEngineLanguageGenerator(resource);
}
// listen for resource changes
this.resourceExplorer.Changed += ResourceExplorer_Changed;
}
/// <summary>
/// Initializes a new instance of the <see cref="TemplateEngineLanguageGenerator"/> class.
/// </summary>
/// <param name="lgText">lg template text.</param>
/// <param name="id">optional label for the source of the templates (used for labeling source of template errors).</param>
/// <param name="resourceMapping">template resource loader delegate (locale) -> <see cref="ImportResolverDelegate"/>.</param>
public TemplateEngineLanguageGenerator(string lgText, string id, Dictionary <string, IList <IResource> > resourceMapping)
{
this.Id = id ?? DEFAULTLABEL;
var(_, locale) = MultiLanguageResourceLoader.ParseLGFileName(id);
var fallbackLocale = MultiLanguageResourceLoader.FallbackLocale(locale, resourceMapping.Keys.ToList());
foreach (var mapping in resourceMapping)
{
// if no locale present in id, enumarate every locale found
// if locale is present, use that one
if (string.Equals(fallbackLocale, string.Empty) || string.Equals(fallbackLocale, mapping.Key))
{
var engine = new TemplateEngine().AddText(lgText ?? string.Empty, Id, LanguageGeneratorManager.ResourceExplorerResolver(mapping.Key, resourceMapping));
multiLangEngines.Add(mapping.Key, engine);
}
}
}
private TemplateEngine InitTemplateEngine(ITurnContext turnContext)
{
var locale = turnContext.Activity.Locale?.ToLower() ?? string.Empty;
if (multiLangEngines.Count > 0)
{
var fallbackLocale = MultiLanguageResourceLoader.FallbackLocale(locale, multiLangEngines.Keys.ToList());
engine = multiLangEngines[fallbackLocale];
}
else
{
// Do not rewrite to ??= (C# 8.0 new feature). It will break in linux/mac
engine = engine ?? new TemplateEngine();
}
return(engine);
}
/// <summary>
/// Initializes a new instance of the <see cref="TemplateEngineLanguageGenerator"/> class.
/// </summary>
/// <param name="filePath">lg template file absolute path.</param>
/// <param name="resourceMapping">template resource loader delegate (locale) -> <see cref="ImportResolverDelegate"/>.</param>
public TemplateEngineLanguageGenerator(string filePath, Dictionary <string, IList <IResource> > resourceMapping)
{
filePath = PathUtils.NormalizePath(filePath);
this.Id = Path.GetFileName(filePath);
var(_, locale) = MultiLanguageResourceLoader.ParseLGFileName(Id);
var fallbackLocale = MultiLanguageResourceLoader.FallbackLocale(locale, resourceMapping.Keys.ToList());
foreach (var mapping in resourceMapping)
{
// if no locale present in id, enumarate every locale found
// if locale is present, use that one
if (string.Equals(fallbackLocale, string.Empty) || string.Equals(fallbackLocale, mapping.Key))
{
var engine = new TemplateEngine().AddFile(filePath, LanguageGeneratorManager.ResourceExplorerResolver(mapping.Key, resourceMapping));
multiLangEngines.Add(mapping.Key, engine);
}
}
}
public static ImportResolverDelegate ResourceExplorerResolver(string locale, Dictionary <string, IList <IResource> > resourceMapping)
{
return((string source, string id) =>
{
var fallbackLocale = MultiLanguageResourceLoader.FallbackLocale(locale, resourceMapping.Keys.ToList());
var resources = resourceMapping[fallbackLocale];
var resourceName = Path.GetFileName(PathUtils.NormalizePath(id));
var resource = resources.FirstOrDefault(u => MultiLanguageResourceLoader.ParseLGFileName(u.Id).prefix.ToLower() == MultiLanguageResourceLoader.ParseLGFileName(resourceName).prefix.ToLower());
if (resource == null)
{
throw new Exception($"There is no matching LG resource for {resourceName}");
}
else
{
var content = resource.ReadTextAsync().GetAwaiter().GetResult();
return (content, resource.Id);
}
});
}
