public async Task <ModelMetadata> GetModelMetadata(string dbContextTypeName, ITypeSymbol modelTypeSymbol)
{
Type dbContextType;
var dbContextSymbols = _modelTypesLocator.GetType(dbContextTypeName).ToList();
var isNewDbContext = false;
SyntaxTree newDbContextTree = null;
NewDbContextTemplateModel dbContextTemplateModel = null;
if (dbContextSymbols.Count == 0)
{
isNewDbContext = true;
dbContextTemplateModel = new NewDbContextTemplateModel(dbContextTypeName, modelTypeSymbol);
newDbContextTree = await _dbContextEditorServices.AddNewContext(dbContextTemplateModel);
var projectCompilation = _libraryManager.GetProject(_environment).Compilation;
var newAssemblyName = projectCompilation.AssemblyName + _counter++;
var newCompilation = projectCompilation.AddSyntaxTrees(newDbContextTree).WithAssemblyName(newAssemblyName);
var result = CommonUtilities.GetAssemblyFromCompilation(_loader, newCompilation);
if (result.Success)
{
dbContextType = result.Assembly.GetType(dbContextTypeName);
if (dbContextType == null)
{
throw new InvalidOperationException("There was an error creating a DbContext, there was no type returned after compiling the new assembly successfully");
}
}
else
{
throw new InvalidOperationException("There was an error creating a DbContext :" + string.Join("\n", result.ErrorMessages));
}
}
else
{
dbContextType = _libraryManager.GetReflectionType(_environment, dbContextTypeName);
if (dbContextType == null)
{
throw new InvalidOperationException("Could not get the reflection type for DbContext : " + dbContextTypeName);
}
}
var modelTypeName = modelTypeSymbol.FullNameForSymbol();
var modelType = _libraryManager.GetReflectionType(_environment, modelTypeName);
if (modelType == null)
{
throw new InvalidOperationException("Could not get the reflection type for Model : " + modelTypeName);
}
var metadata = GetModelMetadata(dbContextType, modelType);
// Write the DbContext if getting the model metadata is successful
if (isNewDbContext)
{
await WriteDbContext(dbContextTemplateModel, newDbContextTree);
}
return(metadata);
}