import { z } from "zod";

export const regexTesterConfigSchema = z.object({
  maxInputLength: z.number().int().positive().max(1048576).default(102400),
  maxMatches: z.number().int().positive().max(1000).default(100),
});

export type RegexTesterToolConfig = z.infer<typeof regexTesterConfigSchema>;

export const DEFAULT_REGEX_TESTER_CONFIG: RegexTesterToolConfig = {
  maxInputLength: 102400,
  maxMatches: 100,
};

export function parseRegexTesterConfig(raw: unknown): RegexTesterToolConfig {
  const parsed = regexTesterConfigSchema.safeParse(raw);
  if (!parsed.success) {
    throw new Error(`Invalid regex-tester config: ${parsed.error.message}`);
  }
  return parsed.data;
}