import type { Type } from "@tsed/core";
import { JsonSchema } from "@tsed/schema";
export interface ConfigSourceOptions<Opts = any> {
    /**
     * The name of the configuration provider.
     */
    name?: string;
    /**
     * The priority of the configuration provider. Higher priority providers will override values from lower priority providers.
     * @default 0
     */
    priority?: number;
    /**
     * Whether to enable the configuration provider.
     * @default true
     */
    enabled?: boolean;
    /**
     * The ConfigSource to use for loading configuration values.
     * @param args
     */
    use: Type<ConfigSource<Opts>>;
    /**
     * Options for the configuration provider.
     */
    options: Opts;
    /**
     * The schema to validate the configuration values against.
     */
    validationSchema?: JsonSchema;
    /**
     * Enable FileSystem Watch mode. ConfigSource must implement the `watch()` method.
     */
    watch?: boolean;
    /**
     * Refresh strategy. Ts.ED can refresh ConfigSource during the "$onRequest" or "$onResponse" hook.
     *
     * Note: refresh data during `$onRequest` can degrade performance depending on the ConfigSource type.
     * We recommend to refresh data during the $onResponse hook (action are asynchronous).
     */
    refreshOn?: "request" | "response";
}
export type InitialConfigSourceOptions = Omit<ConfigSourceOptions, "options" | "use">;
export type ConfigSourceWatchCloseCB = () => Promise<void> | void;
export type ConfigSourceOnChangeCB = () => Promise<void>;
/**
 * Interface for a configuration source that can provide configuration values.
 */
export interface ConfigSource<Opts = any> {
    options: Opts;
    $onInit?(): Promise<void> | void;
    $onDestroy?(): Promise<void> | void;
    /**
     * Load configuration from the source.
     */
    getAll(): Promise<Record<string, unknown>> | Record<string, unknown>;
    watch?(onChange?: ConfigSourceOnChangeCB): Promise<ConfigSourceWatchCloseCB> | ConfigSourceWatchCloseCB | void | Promise<void>;
}
export type ConfigurationExtends = (Type<ConfigSource> | ConfigSourceOptions)[];