"use strict";

const { z } = require("zod");

const usernameRegex = /^[a-zA-Z0-9_-]{2,40}$/;

const XWebhookPayloadSchema = z.object({
  mentionPostId: z.string().min(1),
  callerUserId: z.string().min(1),
  parentPost: z.record(z.string(), z.unknown()).or(z.object({}).passthrough()),
});

const PolarWebhookPayloadSchema = z.object({
  userId: z.string().min(1),
  credits: z.coerce.number().int().positive(),
  eventId: z.string().min(1),
});

const LoginFormSchema = z.object({
  userId: z.string().regex(usernameRegex, "Username must be 2-40 characters using letters, numbers, _ or -"),
  returnTo: z.string().optional(),
});

const TopUpFormSchema = z.object({
  amount: z.coerce.number().int().positive().max(500),
});

const SimulateMentionFormSchema = z.object({
  title: z.string().trim().min(1).max(200),
  body: z.string().trim().min(1).max(120000),
});

function parseOrThrow(schema, payload, errorMessage) {
  const result = schema.safeParse(payload);
  if (!result.success) {
    const message = errorMessage || result.error.issues[0].message || "validation_failed";
    throw new Error(message);
  }
  return result.data;
}

module.exports = {
  XWebhookPayloadSchema,
  PolarWebhookPayloadSchema,
  LoginFormSchema,
  TopUpFormSchema,
  SimulateMentionFormSchema,
  parseOrThrow,
};