private IEnumerable <RawContentPack> GetContentPacks(IMigration[] migrations)
{
this.Monitor.VerboseLog("Preloading content packs...");
foreach (IContentPack contentPack in this.Helper.ContentPacks.GetOwned())
{
RawContentPack rawContentPack;
try
{
// validate content.json has required fields
ContentConfig content = contentPack.ReadJsonFile <ContentConfig>(this.PatchFileName);
if (content == null)
{
this.Monitor.Log($"Ignored content pack '{contentPack.Manifest.Name}' because it has no {this.PatchFileName} file.", LogLevel.Error);
continue;
}
if (content.Format == null || content.Changes == null)
{
this.Monitor.Log($"Ignored content pack '{contentPack.Manifest.Name}' because it doesn't specify the required {nameof(ContentConfig.Format)} or {nameof(ContentConfig.Changes)} fields.", LogLevel.Error);
continue;
}
// apply migrations
IMigration migrator = new AggregateMigration(content.Format, this.SupportedFormatVersions, migrations);
if (!migrator.TryMigrate(content, out string error))
{
this.Monitor.Log($"Loading content pack '{contentPack.Manifest.Name}' failed: {error}.", LogLevel.Error);
continue;
}
// init
rawContentPack = new RawContentPack(new ManagedContentPack(contentPack), content, migrator);
}
catch (Exception ex)
{
this.Monitor.Log($"Error preloading content pack '{contentPack.Manifest.Name}'. Technical details:\n{ex}", LogLevel.Error);
continue;
}
yield return(rawContentPack);
}
}
/// <summary>Parse the underlying <c>content.json</c> file and set the <see cref="Content"/> and <see cref="Migrator"/> fields.</summary>
/// <param name="error">The error indicating why the content could not be reloaded, if applicable.</param>
public bool TryReloadContent(out string error)
{
const string filename = "content.json";
// load raw file
ContentConfig content = this.ContentPack.ReadJsonFile <ContentConfig>(filename);
if (content == null)
{
error = $"content pack has no {filename} file";
return(false);
}
// validate base fields
if (content.Format == null)
{
error = $"content pack doesn't specify the required {nameof(ContentConfig.Format)} field.";
return(false);
}
if (!content.Changes.Any() && !content.CustomLocations.Any())
{
error = $"content pack must specify the {nameof(ContentConfig.Changes)} or {nameof(ContentConfig.CustomLocations)} fields.";
return(false);
}
// apply migrations
IMigration migrator = new AggregateMigration(content.Format, this.GetMigrations(content));
if (!migrator.TryMigrate(content, out error))
{
return(false);
}
// load content
this.ContentImpl = content;
this.MigratorImpl = migrator;
return(true);
}
