import type { H3Event } from 'h3';
import type { RuntimeConfig } from '../../../utils/url.js';
/**
 * Gets the correct value of `host` (later renamed to `origin`) configuration parameter for `authjs` InternalRequest.
 * This is actually neither `Host` nor `Origin`, but a base URL (`authjs` naming is misleading) including path.
 *
 * When user specifies `trustHost`, we would use the `event` to compute the base URL by using full request URL minus the `/action` and `/provider` parts.
 *
 * ## WARNING
 * Please ensure that any URL produced by this function has a trusted host!
 *
 * @example
 * ```
 * // configured baseURL = https://your.domain/api/auth
 *
 * // Without `trustHost`
 * // event path = https://example.com/auth/path/signin/github?callbackUrl=foo
 * getHostValueForAuthjs(event, runtimeConfig, false) === 'https://your.domain/api/auth'
 *
 * // With `trustHost`
 * // event path = https://example.com/auth/path/signin/github?callbackUrl=foo
 * getHostValueForAuthjs(event, runtimeConfig, true) === 'https://example.com/api/auth'
 * ```
 *
 * @param event The H3 Event containing the request
 * @param runtimeConfig Nuxt RuntimeConfig
 * @param trustHostUserPreference Whether the host can be trusted. If `true`, base will be inferred from the request, otherwise the configured origin will be used.
 * @returns {string} Value formatted for usage with Authjs
 * @throws {Error} When server origin was incorrectly configured or when URL building failed
 */
export declare function getHostValueForAuthjs(event: H3Event, runtimeConfig: RuntimeConfig, trustHostUserPreference: boolean, isProduction: boolean): string;
/**
 * Get the full base URL including Origin and pathname
 *
 * @param runtimeConfig Nuxt Runtime Config
 * @param includePath Whether function should output just Origin or the full URL
 * @param trustHostUserPreference Whether the host can be trusted. If `true`, base will be inferred from the request, otherwise the configured origin will be used.
 * @param isProduction Whether app is running in production mode. In non-production mode function will try to infer the result from the passed event.
 * @param event The H3 Event for inferring the result (optional)
 * @throws {Error} When the calculated result did not include a valid Origin, e.g. it will throw for the result of `/api/auth`, but will succeed for `https://example.com/api/auth`
 */
export declare function getServerBaseUrl(runtimeConfig: RuntimeConfig, includePath: boolean, trustHostUserPreference: boolean, isProduction: boolean, event?: H3Event): string;