/**
 * 模式配置类型定义
 */
type PatternConfig = readonly [key: string, pattern: string, defaultValue?: string];

/**
 * 根据模式配置推断返回类型
 */
type InferResultType<T extends readonly PatternConfig[]> = {
  [K in T[number] as K extends readonly [infer Key, ...any[]] ? Key : never]: K extends readonly [any, any, infer Default]
    ? Default extends string
      ? string
      : string | undefined
    : string | undefined;
};

/**
 * 分析函数 - 根据 patterns 参数类型确定返回类型
 * @param patterns 模式配置数组
 * @param value 要解析的字符串
 * @returns 解析后的对象，类型根据patterns自动推断
 */
export function analysis<T extends readonly PatternConfig[]>(patterns: T, value?: string): InferResultType<T> {
  const regex = patterns.map(([key, pattern]) => `(?:${key}:(?<${key}>${pattern})[;$]?)?`).join('');
  const groups = (value || '').match(new RegExp(`^${regex}`))?.groups ?? {};

  return patterns.reduce((values, [key, _, defaultValue]) => {
    values[key as keyof InferResultType<T>] = (groups[key] ?? defaultValue) as any;
    return values;
  }, {} as InferResultType<T>);
}