import java.util.HashMap;

import java.util.Map;

public class DiagnosticParams {

public static Map<String, String> getDiagnosticParams(Map<String, String> rawParams) {

Map<String, String> diagnosticParams = new HashMap<>();

// Default values with fallback logic

diagnosticParams.put("level", rawParams.getOrDefault("level", "info")); // Default to "info"

diagnosticParams.put("timestampFormat", rawParams.getOrDefault("timestampFormat", "yyyy-MM-dd HH:mm:ss")); // Default timestamp format

diagnosticParams.put("logFile", rawParams.getOrDefault("logFile", "default.log")); //default log file

//Optional parameter

if(rawParams.containsKey("includeStacktrace")){

diagnosticParams.put("includeStacktrace", rawParams.get("includeStacktrace") .toLowerCase()); //case insensitive

}

//Handle potentially missing or invalid parameters gracefully

String severity = rawParams.getOrDefault("severity", "debug");

if ("error".equalsIgnoreCase(severity)) {

//Perform error handling if the severity is error

System.err.println("Error detected. Review logs immediately.");

}

//Example of handling numeric parameters with default

try {

int maxAttempts = Integer.parseInt(rawParams.getOrDefault("maxAttempts", "5"));

if (maxAttempts <= 0) {

System.err.println("Invalid maxAttempts value. Using default of 5.");

maxAttempts = 5;

}

diagnosticParams.put("maxAttempts", String.valueOf(maxAttempts));

} catch (NumberFormatException e) {

System.err.println("Invalid maxAttempts format. Using default of 5.");

diagnosticParams.put("maxAttempts", "5");

}

return diagnosticParams;

}

public static void main(String[] args) {

//Example Usage

Map<String, String> params1 = new HashMap<>();

params1.put("level", "warning");

params1.put("timestampFormat","MM/dd/yyyy");

Map<String, String> params2 = new HashMap<>();

params2.put("logFile", "custom.log");

params2.put("includeStacktrace", "true");

Map<String, String> params3 = new HashMap<>(); //Minimal params

Map<String,String> params4 = new HashMap<>(); //Invalid number format

System.out.println("Params 1: " + getDiagnosticParams(params1));

System.out.println("Params 2: " + getDiagnosticParams(params2));

System.out.println("Params 3: " + getDiagnosticParams(params3));

System.out.println("Params 4: " + getDiagnosticParams(params4));

}

}