import type { Format } from './format.ts';

export const LEVEL = Symbol('LEVEL');
export const MESSAGE = Symbol('MESSAGE');
export const SPLAT = Symbol('SPLAT');

export interface TransformableInfo {
  level: LoggerLevel;
  message: unknown;
  [LEVEL]?: LoggerLevel;
  [MESSAGE]?: unknown;
  [SPLAT]?: unknown;
  [key: string | symbol]: unknown;
}

export type TransformFunction = (
  info: TransformableInfo,
  opts?: unknown,
) => TransformableInfo | boolean;
export type FormatWrap = (opts?: object) => Format;

export enum NpmConfigSetLevels {
  error = 0,
  warn = 1,
  info = 2,
  http = 3,
  verbose = 4,
  debug = 5,
  silly = 6,
}

export type LoggerLevel = 'error' | 'warn' | 'info' | 'http' | 'verbose' | 'debug' | 'silly';

export interface LoggerOptions {
  format: Format;
}

export interface LogInfo extends TransformableInfo {
  name?: string;
}