package io.github.magwas.coder;
   
   import java.io.IOException;
   import java.nio.file.Files;
   import java.nio.file.Path;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.stereotype.Service;
   
  @Service
  public class SystemInstructionsService {
  	@Autowired
  	private PersonalityService personalityService;
  
  	public String apply(String personalityName) {
  		try {
  			PersonalityData personality = personalityService.apply(personalityName);
  			Path instructionsFile = Path.of(System.getProperty("user.home"), ".coder", personality.instructionsFile());
  			return Files.exists(instructionsFile)
  					? Files.readString(instructionsFile).trim()
  					: "";
  		} catch (IOException e) {
  			return "";
  		} catch (IllegalArgumentException e) {
  			return "";
  		}
  	}
  }