package com.nebula.erp.sales.exception;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@ControllerAdvice
public class GlobalExceptionHandler {

    private ResponseEntity<Object> build(HttpStatus status, String message) {
        Map<String, Object> body = new HashMap<>();
        body.put("status", "error");

        Map<String, Object> meta = new HashMap<>();
        meta.put("code", status.value());
        meta.put("details", message);
        meta.put("timestamp", LocalDateTime.now());

        body.put("meta", meta);
        body.put("data", null);
        return ResponseEntity.status(status).body(body);
    }

    @ExceptionHandler(IllegalArgumentException.class)
    public ResponseEntity<Object> handleIllegalArgument(IllegalArgumentException ex) {
        return build(HttpStatus.BAD_REQUEST, ex.getMessage());
    }

    @ExceptionHandler(Exception.class) // fallback
    public ResponseEntity<Object> handleGeneric(Exception ex) {
        return build(HttpStatus.INTERNAL_SERVER_ERROR, "Something went wrong.");
    }
}