export const USAGE = "Usage: codex-app-server-bridge app-server";
export class ConfigurationError extends Error {
    constructor(message) {
        super(message);
        this.name = "ConfigurationError";
    }
}
export function validateInvocation(arguments_) {
    if (arguments_.length !== 1 || arguments_[0] !== "app-server") {
        throw new ConfigurationError(USAGE);
    }
}
export function parseEndpoint(value) {
    if (value === undefined || value.length === 0) {
        throw new ConfigurationError("CODEX_APP_SERVER_URL is required");
    }
    const match = /^ws:\/\/(127\.0\.0\.1|\[::1\]):([0-9]+)\/?$/.exec(value);
    if (match === null) {
        throw new ConfigurationError("CODEX_APP_SERVER_URL must be ws://127.0.0.1:<port> or ws://[::1]:<port>");
    }
    const host = match[1];
    const portText = match[2];
    if (host === undefined || portText === undefined) {
        throw new ConfigurationError("CODEX_APP_SERVER_URL is invalid");
    }
    const port = Number(portText);
    if (!Number.isSafeInteger(port) || port < 1 || port > 65_535) {
        throw new ConfigurationError("CODEX_APP_SERVER_URL must contain a valid explicit port");
    }
    const display = `ws://${host}:${port}`;
    return { url: display, display };
}