/**
 * Use this provider to authenticate with Facebook. Supports both OAuth2 and OIDC.
 *
 * #### Using OAuth
 *
 * ```ts {5-8}
 * import { FacebookProvider } from "@openauthjs/openauth/provider/facebook"
 *
 * export default issuer({
 *   providers: {
 *     facebook: FacebookProvider({
 *       clientID: "1234567890",
 *       clientSecret: "0987654321"
 *     })
 *   }
 * })
 * ```
 *
 * #### Using OIDC
 *
 * ```ts {5-7}
 * import { FacebookOidcProvider } from "@openauthjs/openauth/provider/facebook"
 *
 * export default issuer({
 *   providers: {
 *     facebook: FacebookOidcProvider({
 *       clientID: "1234567890"
 *     })
 *   }
 * })
 * ```
 *
 * @packageDocumentation
 */

import { MARK_FACEBOOK } from '../ui/mark.js';
import { Oauth2Provider, Oauth2WrappedConfig } from './oauth2.js';
import { OidcProvider, OidcWrappedConfig } from './oidc.js';

export interface FacebookConfig extends Oauth2WrappedConfig {}
export interface FacebookOidcConfig extends OidcWrappedConfig {}

/**
 * Create a Facebook OAuth2 provider.
 *
 * @param config - The config for the provider.
 * @example
 * ```ts
 * FacebookProvider({
 *   clientID: "1234567890",
 *   clientSecret: "0987654321"
 * })
 * ```
 */
export function FacebookProvider(config: FacebookConfig) {
	return Oauth2Provider({
		...config,
		type: 'facebook',
		display: { name: 'Facebook', icon: MARK_FACEBOOK },
		endpoint: {
			authorization: 'https://www.facebook.com/v12.0/dialog/oauth',
			token: 'https://graph.facebook.com/v12.0/oauth/access_token'
		}
	});
}

/**
 * Create a Facebook OIDC provider.
 *
 * This is useful if you just want to verify the user's email address.
 *
 * @param config - The config for the provider.
 * @example
 * ```ts
 * FacebookOidcProvider({
 *   clientID: "1234567890"
 * })
 * ```
 */
export function FacebookOidcProvider(config: FacebookOidcConfig) {
	return OidcProvider({
		...config,
		type: 'facebook',
		display: { name: 'Facebook', icon: MARK_FACEBOOK },
		issuer: 'https://graph.facebook.com'
	});
}