Add file to Resources before building executable

Hello. I want to autogenerate some files before embedding them in build. I wrote a system residing on top of BuildPipeline.BuildPlayer call, but unfortunately, all my files generated before calling this function does not have any effect on actual build.

For example, before calling BuildPipline.BuildPlayer, I populate the text file and add it to Resources folder. However, when I try to read it with Resources.Load<TextAsset> the error is throw that the file doesn't exist.

So, my question is how can I effectively implement PreBuild step in Unity?

 

Oh, I solved the problem just a second ago. The key was to add AssetsDatabase.Refresh() so my generated text file got reimported before I called the actual build function.

 

Also commands to remember AssetDb.SaveAssets() and EditorUtility.SetDirty(obj)