declare var __dirname;

namespace _sindri
{
	
	/**
	 */
	export type type_input = {
		domains : Array<
			{
				name : string;
				description : (null | string);
				key_field : (
					null
					|
					{
						name : string;
						description ?: (null | string);
					}
				);
				data_fields : Array<
					{
						name : string;
						description : (null | string);
						type : ("boolean" | "integer" | "float" | "string_short" | "string_medium" | "string_long");
						nullable : boolean;
						default : (null | boolean | int | float | string);
					}
				>;
				constraints ?: Array<
					{
						kind : ("unique" | "foreign_key");
						parameters : Record<string, any>;
					}
				>;
			}
		>;
	};
	
	
	/**
	 */
	export type type_output = {
		render : ((input_data : type_input) => Promise<string>);
	};
	
	
	/**
	 */
	export enum enum_realm {
		database = "database",
		backend = "backend",
		frontend = "frontend",
		other = "other",
	}
	
	
	/**
	 */
	var _outputs : Record<enum_realm, Record<string, _sindri.type_output>> = {
		[enum_realm.database]: {},
		[enum_realm.backend]: {},
		[enum_realm.frontend]: {},
		[enum_realm.other]: {},
	};
	
	
	/**
	 */
	export function add_output(
		realm : enum_realm,
		implementation : string,
		output : _sindri.type_output
	) : void
	{
		_outputs[realm][implementation] = output;
	}
	
	
	/**
	 */
	export function get_output(
		realm : enum_realm,
		implementation : string
	) : _sindri.type_output
	{
		return _outputs[realm][implementation];
	}
	
	
	/**
	 */
	export function list_outputs(
	) : Array<{realm : enum_realm; implementation : string;}>
	{
		return (
			Object.entries(_outputs)
			.map(
				([realm, group]) => (
					Object.keys(group)
					.map(
						implementation => ({"realm": (realm as enum_realm), "implementation": implementation})
					)
				)
			)
			.reduce(
				(x, y) => x.concat(y),
				[]
			)
		);
	}
	
	
	/**
	 */
	export function get_template(
		realm : enum_realm,
		implementation : string,
		name : string
	) : Promise<string>
	{
		return lib_plankton.file.read(
			[__dirname, "templates", realm, implementation, name].join("/")
		);
	}
	
}