import { z } from 'zod';

const envSchema = z.object({
  PORT: z.coerce.number().default(8096),
  HOST: z.string().default('0.0.0.0'),
  DATA_DIR: z.string().default('./data'),
  STATIC_DIR: z.string().optional(),
  PUBLIC_URL: z.string().url().default('http://localhost:8096'),
  NIP98_MAX_SKEW_SECS: z.coerce.number().default(60),
  SESSION_TTL_DAYS: z.coerce.number().default(30),
  // Default sync area: Madeira, Portugal (Funchal-centered radius covering the whole island).
  BTCMAP_CENTER_LAT: z.coerce.number().default(32.7607),
  BTCMAP_CENTER_LON: z.coerce.number().default(-16.9595),
  BTCMAP_RADIUS_KM: z.coerce.number().default(45),
  // How close (in meters) a player must be to a place to claim it or link from it.
  CLAIM_RADIUS_METERS: z.coerce.number().default(40),
});

export type Config = z.infer<typeof envSchema>;

export function loadConfig(env: NodeJS.ProcessEnv = process.env): Config {
  return envSchema.parse(env);
}