public TargetApp Initialize(string appModulePath)
{
if (_isInitialized)
{
return(this);
}
if (CmdletHost == null)
{
throw new NullReferenceException("The host Cmdlet for this Target App was not set before initialization.");
}
_isInitialized = true;
if (string.IsNullOrWhiteSpace(appModulePath) ||
!appModulePath.EndsWithCaseless(".3pmTarget.psm1") ||
!File.Exists(appModulePath))
{
throw new ArgumentException("Referenced path does not point to a valid pppm Target Application module.");
}
var meta = Pppm.GetPsMetaComment(File.ReadAllText(appModulePath));
if (meta == null)
{
throw new ArgumentException("Referenced pppm Target Application module doesn't contain required meta comment.");
}
Pppm.IsScriptCompatible(meta, ScriptUsage.App, true);
ShortName = meta["ShortName"].ToString();
_defaultRepoRef = meta["DefaultRepository"].ToString();
if (!PackageRepository.TryCreateRepository(_defaultRepoRef, out var defRepo))
{
throw new ArgumentException($"Cannot gather default repository for {ShortName}.");
}
DefaultRepository = defRepo;
if (meta.TryGetValue("DefaultArchitecture", out var defArchJt))
{
DefaultArchitecture = defArchJt.ToObject <Architecture>();
}
_appModule = CmdletHost.ImportModule(appModulePath);
var vars = _appModule.ExportedVariables;
SafeGet(vars, "executable", "$", "variable", out _exePath);
SafeGet(vars, "appRoot", "$", "variable", out _appRoot);
var funcs = _appModule.ExportedFunctions;
SafeGet(funcs, "Get-FolderForPack", "", "function", out _getFolderForPackFunc);
SafeGet(funcs, "Get-InstalledPacks", "", "function", out _getInstalledPacksFunc);
CmdletHost.RemoveModule(_appModule.Name);
return(this);
}