import { load } from "@std/dotenv";
import { parse } from "jsr:@std/yaml";
import { log } from "./log.ts";

const dirname = Deno.cwd();
await load({ envPath: `${dirname}/.env`, export: true });

let staticUsers: { [key: string]: string } = {};

try {
  const yamlContent = await Deno.readTextFile(`${dirname}/users.yaml`);
  const parsedContent = parse(yamlContent);
  if (parsedContent !== null && typeof parsedContent === "object") {
    staticUsers = parsedContent as { [key: string]: string };
    log(`Serving content for pubkeys in users.yaml`, "blue");
  }
} catch {
  log(`Could not find or parse a users.yaml config`, "yellow");
}

const config = {
  port: parseInt(Deno.env.get("PORT") || "8000"),
  base_url: Deno.env.get("BASE_URL") || `http://localhost:8000`,
  relay_urls: Deno.env.get("RELAY_URLS")?.split(",") || [],
  staticUsers,
  ldapEnabled: !!Deno.env.get("LDAP_URL"),
  ldap: {
    url: Deno.env.get("LDAP_URL"),
    bindDN: Deno.env.get("LDAP_BIND_DN"),
    password: Deno.env.get("LDAP_PASSWORD"),
    searchDN: Deno.env.get("LDAP_SEARCH_DN"),
  },
};

if (config.relay_urls.length === 0) {
  log(`No relays configured. Please add at least one relay to RELAY_URLS.`);
  Deno.exit(1);
}

if (config.ldapEnabled) {
  if (
    config.ldap.url && config.ldap.bindDN && config.ldap.password &&
    config.ldap.searchDN
  ) {
    log(`Serving content for pubkeys from ${config.ldap.url}`, "blue");
  } else {
    log(`The LDAP config is incomplete`);
    Deno.exit(1);
  }
} else {
  log(`LDAP not enabled`, "blue");
}

if (Object.keys(staticUsers).length === 0 && !config.ldapEnabled) {
  log(`Neither static users nor LDAP configured. Nothing to serve.`);
  Deno.exit(1);
}

export default config;