import { z } from 'zod'
import DOMPurify from 'isomorphic-dompurify'

const sanitizeString = (str: string) => DOMPurify.sanitize(str).trim()
const urlSchema = z.string().url("Invalid URL").refine((val) => val.startsWith("http://") || val.startsWith("https://"), {
  message: "URL must start with http:// or https://",
})

export const coinSchema = z.object({
  name: z.string()
    .min(1, "Name is required")
    .max(50, "Name too long")
    .regex(/^[\x20-\x7E]+$/, "Name can only contain standard characters")
    .transform(sanitizeString),
  ticker: z.string()
    .min(3, "Ticker must be at least 3 characters")
    .max(10, "Ticker cannot exceed 10 characters")
    .regex(/^[a-zA-Z0-9]+$/, "Ticker can only contain letters and numbers")
    .toUpperCase()
    .transform(sanitizeString),
  description: z.string()
    .max(500, "Description too long")
    .regex(/^[\x20-\x7E\n\r]*$/, "Description can only contain standard characters")
    .optional()
    .transform(val => sanitizeString(val || '')),
  image: urlSchema.optional().or(z.literal('')),
  website: urlSchema.optional().or(z.literal('')),
  twitter: urlSchema.optional().or(z.literal('')),
  telegram: urlSchema.optional().or(z.literal('')),
  initialBuy: z.number().min(0).max(100, "Initial buy cannot exceed 100 SOL").optional().default(0),
  useUserImage: z.boolean().optional(),
  verified: z.boolean().optional().default(false),
  boosted: z.boolean().optional().default(false),
})

export const commentSchema = z.object({
  coinId: z.string().min(1, "Coin ID required"),
  text: z.string()
    .min(1)
    .max(280, "Comment too long")
    .regex(/^[\x20-\x7E\n\r]+$/, "Comment can only contain standard characters")
    .transform(sanitizeString),
})

export type CreateCoinInput = z.infer<typeof coinSchema>
export type CreateCommentInput = z.infer<typeof commentSchema>

export const RESERVED_USERNAMES = [
  'api', 'coin', 'create', 'dashboard', 'login', 'onboarding', 'privacy', 'terms', 'u',
  'admin', 'administrator', 'mod', 'moderator', 'support', 'help', 'system', 'sys',
  'bot', 'pummmp', 'null', 'undefined', 'void', 'root', 'webmaster', '404', '500'
]

export const isReservedUsername = (username: string) => {
    return RESERVED_USERNAMES.includes(username.toLowerCase());
}