/// <summary>
/// Returns the calculated destination URL for the specified <paramref name="redirect"/>.
/// </summary>
/// <param name="redirect">The redirect.</param>
/// <param name="uri">The inbound URL.</param>
/// <returns>The destination URL.</returns>
public virtual string GetDestinationUrl(IRedirectBase redirect, Uri uri)
{
if (string.IsNullOrWhiteSpace(redirect?.Destination?.Url))
{
return(null);
}
// Get the query string (if any)
string query = redirect.Destination.Query;
// Get the fragment (if any)
string fragment = redirect.Destination.Fragment;
// Merge the existing query string with the query string of "uri" (eg. from the inbound request)
if (uri != null && uri.Query.HasValue() && redirect.ForwardQueryString)
{
query = MergeQueryString(query, uri.Query);
}
// For content and media, we need to look up the most recent URL
IPublishedContent content = null;
switch (redirect.Destination.Type)
{
case RedirectDestinationType.Content:
if (_umbracoContextAccessor.TryGetUmbracoContext(out IUmbracoContext context))
{
content = context.Content.GetById(redirect.Destination.Key);
}
break;
case RedirectDestinationType.Media:
if (_umbracoContextAccessor.TryGetUmbracoContext(out context))
{
content = context.Media.GetById(redirect.Destination.Key);
}
break;
}
// Put the destination URL back together
return(RedirectsUtils.ConcatUrl(content?.Url() ?? redirect.Destination.Url, query, fragment));
}
protected override void Migrate()
{
try {
// Get the DTOs for all redirects in the database
List <RedirectDto> dtos = Database.Fetch <RedirectDto>("SELECT * FROM [SkybrudRedirects];");
// Map the path to a special redirects folder
string dir = _hostingEnvironment.MapPathWebRoot("~/App_Data/Skybrud.Umbraco.Redirects");
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
// Map the path to the JSON file and save the DTOs to disk as a backup
string path = Path.Combine(dir, $"Redirects_Backup_{DateTime.UtcNow:yyyyMMddHHmmss}.json");
JsonUtils.SaveJsonArray(path, JArray.FromObject(dtos));
// Add the "DestinationQuery" column to the database table
if (!ColumnExists(RedirectDto.TableName, nameof(RedirectDto.DestinationQuery)))
{
Create
.Column(nameof(RedirectDto.DestinationQuery))
.OnTable(RedirectDto.TableName)
.AsString()
.WithDefaultValue(string.Empty)
.Do();
}
// Add the "DestinationFragment" column to the database table
if (!ColumnExists(RedirectDto.TableName, nameof(RedirectDto.DestinationFragment)))
{
Create
.Column(nameof(RedirectDto.DestinationFragment))
.OnTable(RedirectDto.TableName)
.AsString()
.WithDefaultValue(string.Empty)
.Do();
}
// Wrap the DTOs as RedirectItem instances
List <Redirect> redirects = dtos
.Select(x => new Redirect(x))
.ToList();
foreach (Redirect redirect in redirects)
{
// Skip the redirect if we didn't detect any changes
if (!RedirectsUtils.NormalizeUrlParts(redirect))
{
Logger.LogInformation("Redirect with key {Key} is already up-to-date.", redirect.Key);
continue;
}
// Update the redirect in the database
Database.Execute(
"UPDATE [SkybrudRedirects] SET [DestinationUrl] = @0, [DestinationQuery] = @1, [DestinationFragment] = @2 WHERE [Key] = @3;",
redirect.Destination.Url, redirect.Destination.Query, redirect.Destination.Fragment, redirect.Key
);
Logger.LogInformation("Updated redirect with key {Key}.", redirect.Key);
}
} catch (Exception ex) {
throw new Exception("Failed migration for Skybrud.Umbraco.Redirects. See the Umbraco log for more information.", ex);
}
}
