namespace MeetingAssistant;

internal static class RuntimeContentLocator
{
    public static IEnumerable<string> CandidateDocumentationPaths(string fileName)
    {
        foreach (var directory in EnumerateBaseDirectoryAndParents())
        {
            yield return Path.Combine(directory, "docs", fileName);
        }
    }

    public static IEnumerable<string> CandidateDirectoryPaths(params string[] segments)
    {
        foreach (var directory in EnumerateBaseDirectoryAndParents())
        {
            yield return Path.Combine([directory, .. segments]);
        }
    }

    public static IEnumerable<string> CandidateContentPaths(string fileName)
    {
        foreach (var directory in EnumerateBaseDirectoryAndParents())
        {
            yield return Path.Combine(directory, "MeetingAssistant", "Content", fileName);
            yield return Path.Combine(directory, "Content", fileName);
        }
    }

    private static IEnumerable<string> EnumerateBaseDirectoryAndParents(int maxParentDepth = 8)
    {
        var current = new DirectoryInfo(AppContext.BaseDirectory);
        for (var i = 0; i < maxParentDepth && current is not null; i++)
        {
            yield return current.FullName;
            current = current.Parent;
        }
    }
}