import type { ParsedArgs } from 'minimist';
import { DEFAULT_HTTP_PORT } from './constants.js';
import { parseReplierAddresses } from './parse.js';
import type { ResolveResult } from './types.js';
function parsePort(parsed: ParsedArgs, env: NodeJS.ProcessEnv): number {
const fromArg =
typeof parsed.port === 'string' && parsed.port.trim() !== ''
? Number.parseInt(parsed.port.trim(), 10)
: NaN;
if (Number.isInteger(fromArg) && fromArg > 0 && fromArg < 65536)
return fromArg;
const fromEnv =
typeof env.MCP_PORT === 'string' && env.MCP_PORT.trim() !== ''
? Number.parseInt(env.MCP_PORT.trim(), 10)
: NaN;
if (Number.isInteger(fromEnv) && fromEnv > 0 && fromEnv < 65536)
return fromEnv;
return DEFAULT_HTTP_PORT;
}
/**
* Resolve config from parsed argv and env. No side effects, no exit.
*/
export function resolveConfig(
parsed: ParsedArgs,
env: NodeJS.ProcessEnv = process.env,
): ResolveResult {
const apiKey =
(typeof parsed.key === 'string' ? parsed.key : null) ??
env.RESEND_API_KEY ??
null;
if (!apiKey || !apiKey.trim()) {
return {
ok: false,
error:
'No API key. Set RESEND_API_KEY or use --key=<your-resend-api-key>',
};
}
const senderEmailAddress =
(typeof parsed.sender === 'string' ? parsed.sender : null) ??
(typeof env.SENDER_EMAIL_ADDRESS === 'string'
? env.SENDER_EMAIL_ADDRESS.trim() || undefined
: undefined);
const http = parsed.http === true || parsed['http'] === true;
const transport = http ? 'http' : 'stdio';
const port = parsePort(parsed, env);
return {
ok: true,
config: {
apiKey: apiKey.trim(),
senderEmailAddress: senderEmailAddress ?? '',
replierEmailAddresses: parseReplierAddresses(parsed, env),
transport,
port,
},
};
}
