Task IConfigurableComponent.ConfigureAsync(
IEnvironment environment, EnvironmentVariableTarget environmentTarget,
IGit git, GitConfigurationLevel configurationLevel)
{
// NOTE: We currently only update the PATH in Windows installations and leave putting the GCM executable
// on the PATH on other platform to their installers.
if (PlatformUtils.IsWindows())
{
string directoryPath = Path.GetDirectoryName(_appPath);
if (!environment.IsDirectoryOnPath(directoryPath))
{
Context.Trace.WriteLine("Adding application to PATH...");
environment.AddDirectoryToPath(directoryPath, environmentTarget);
}
else
{
Context.Trace.WriteLine("Application is already on the PATH.");
}
}
string helperKey = $"{Constants.GitConfiguration.Credential.SectionName}.{Constants.GitConfiguration.Credential.Helper}";
string gitConfigAppName = GetGitConfigAppName();
IGitConfiguration targetConfig = git.GetConfiguration(configurationLevel);
/*
* We are looking for the following to be considered already set:
*
* [credential]
* ... # any number of helper entries
* helper = # an empty value to reset/clear any previous entries
* helper = {gitConfigAppName} # the expected executable value in the last position & directly following the empty value
*
*/
string[] currentValues = targetConfig.GetRegex(helperKey, Constants.RegexPatterns.Any).ToArray();
if (currentValues.Length < 2 ||
!string.IsNullOrWhiteSpace(currentValues[currentValues.Length - 2]) || // second to last entry is empty
currentValues[currentValues.Length - 1] != gitConfigAppName) // last entry is the expected executable
{
Context.Trace.WriteLine("Updating Git credential helper configuration...");
// Clear any existing entries in the configuration.
targetConfig.UnsetAll(helperKey, Constants.RegexPatterns.Any);
// Add an empty value for `credential.helper`, which has the effect of clearing any helper value
// from any lower-level Git configuration, then add a second value which is the actual executable path.
targetConfig.SetValue(helperKey, string.Empty);
targetConfig.ReplaceAll(helperKey, Constants.RegexPatterns.None, gitConfigAppName);
}
else
{
Context.Trace.WriteLine("Credential helper configuration is already set correctly.");
}
return(Task.CompletedTask);
}