config.ts

import { minutesToMilliseconds } from 'date-fns';
import { z } from 'zod';

const stringBooleanSchema = z.preprocess((val) => {
  if (val === 'true' || val === true) return true;
  if (val === 'false' || val === false) return false;

  throw new Error("Expected 'true' or 'false', got " + val);
}, z.boolean());

const envSchema = z.object({
  // HTTP Server
  PORT: z.coerce.number().default(3000),
  HOST: z.string().default('localhost'),

  // DB
  POSTGRES_CONNECTION_STRING: z.string(),
  POSTGRES_CA_CERT_FILEPATH: z.string().optional(),
  CACHE_TTL_MS: z.coerce.number().default(minutesToMilliseconds(30)),

  // Notifier bot
  BOT_ENABLED: stringBooleanSchema.default(false),
  BOT_RUN_INTERVAL_MS: z.coerce.number().default(minutesToMilliseconds(2)),
  BOT_LOOKBACK_INTERVAL_MS: z.coerce
    .number()
    .default(minutesToMilliseconds(30)),

  // API Client
  BLUESKY_API_ENDPOINT: z.string().default('https://bsky.social'),
  BLUESKY_CLIENT_LOGIN_IDENTIFIER: z.string(),
  BLUESKY_CLIENT_LOGIN_PASSWORD: z.string(),

  // Indexer
  FEEDGEN_SUBSCRIPTION_ENDPOINT: z.string().default('wss://bsky.social'),
  FEEDGEN_HOSTNAME: z.string().default('example.com'),
  FEEDGEN_PUBLISHER_DID: z.string(),
  SUBSCRIPTION_RECONNECT_DELAY: z.number().default(3000),
  EXPERIMENT_FEED_SOURCE_FILEPATH: z.string().optional(),

  // General
  FILTERED_USERS: z
    .string()
    .transform((value) => value.split(','))
    .pipe(z.string().trim().array())
    .optional(),
});

export function parseEnvironment() {
  return envSchema.parse(process.env);
}

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