import Ajv, { KeywordDefinition, JSONSchemaType } from 'ajv';
import { AnySchema } from 'ajv/dist/core';
import { DotenvConfigOptions } from '@dotenvx/dotenvx';

type EnvSchema = typeof envSchema;

declare namespace envSchema {
  export type { JSONSchemaType };

  export type EnvSchemaData = {
    [key: string]: unknown;
  };

  export type EnvSchemaOpt<T = EnvSchemaData> = {
    schema?: JSONSchemaType<T> | AnySchema;
    data?: [EnvSchemaData, ...EnvSchemaData[]] | EnvSchemaData;
    env?: boolean;
    dotenv?: boolean | DotenvConfigOptions;
    ajv?:
      | Ajv
      | {
          customOptions(ajvInstance: Ajv): Ajv;
        };
  };

  export const keywords: {
    separator: KeywordDefinition;
  };

  export const envSchema: EnvSchema;
  export { envSchema as default };
}

declare function envSchema<T = envSchema.EnvSchemaData>(
  _opts?: envSchema.EnvSchemaOpt<T>,
): T;
export = envSchema;